Nuveen Municipal Credit Opportunities Fund (NMCO) NPORT-P Nuveen Municipal Credit Opportunities Fund (Jul 2022 report)

1

Nuveen

Municipal

Credit

Opportunities

Fund

Portfolio

of

Investments

July

31,

2022

(Unaudited)

NMCO

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

LONG-TERM

INVESTMENTS

-

165.3% 

(100.0%

of

Total

Investments)

X

1,132,041,724

MUNICIPAL

BONDS

-

156.8%

(94.9%

of

Total

Investments)

X

1,132,041,724

Alabama

-

5.9%

(3.6%

of

Total

Investments)

$

395

Hoover

Industrial

Development

Board,

Alabama,

Environmental

Improvement

Revenue

Bonds,

United

States

Steel

Corporation

Proejcet,

Green

Series

2020,

6.375%,

11/01/50,

(AMT),

(Mandatory

Put

11/01/30)

No

Opt.

Call

B-

$

455,522

38,450

Hoover

Industrial

Development

Board,

Alabama,

Environmental

Improvement

Revenue

Bonds,

United

States

Steel

Corporation

Proejcet,

Series

2019,

5.750%,

10/01/49,

(AMT)

10/29

at

100.00

B

41,138,809

Tuscaloosa

County

Industrial

Development

Authority,

Alabama,

Gulf

Opportunity

Zone

Bonds,

Hunt

Refining

Project,

Refunding

Series

2019A:

427

4.500%,

5/01/32,

144A

5/29

at

100.00

N/R

399,910

500

5.250%,

5/01/44,

144A

5/29

at

100.00

N/R

475,090

39,772

Total

Alabama

42,469,331

Arizona

-

4.0%

(2.4%

of

Total

Investments)

4,000

Arizona

Industrial

Development

Authority,

Arizona,

Education

Facility

Revenue

Bonds,

Leman

Academy

of

Excellence

East

Tucson

&

Central

Tucson

Projects,

Series

2019A,

5.000%,

7/01/49,

144A

7/24

at

101.00

N/R

3,970,560

Arizona

Industrial

Development

Authority,

Arizona,

Education

Revenue

Bonds,

Academies

of

Math

&

Science

Projects,

Series

2019:

1,860

5.000%,

7/01/49,

144A

7/29

at

100.00

BB

1,854,457

1,500

5.000%,

7/01/54,

144A

7/29

at

100.00

BB

1,483,410

340

Arizona

Industrial

Development

Authority,

Arizona,

Education

Revenue

Bonds,

Pinecrest

Academy-Cadence

Campus

Project,

Series

2020A,

4.000%,

7/15/40,

144A

7/28

at

100.00

BB+

308,193

1,000

Maricopa

County

Industrial

Development

Authority,

Arizona,

Education

Revenue

Bonds,

Gateway

Academy

Project,

Series

2019A,

5.750%,

1/01/50,

144A

1/30

at

100.00

N/R

904,520

Maricopa

County

Industrial

Development

Authority,

Arizona,

Education

Revenue

Bonds,

Legacy

Traditional

Schools

Projects,

Taxable

Series

2019B:

2,000

5.000%,

7/01/39,

144A

7/29

at

100.00

BB+

2,062,360

5,355

5.000%,

7/01/49,

144A

7/29

at

100.00

BB+

5,448,605

1,525

5.000%,

7/01/54,

144A

7/29

at

100.00

BB+

1,542,690

315

Maricopa

County

Industrial

Development

Authority,

Arizona,

Educational

Facilities

Revenue

Bonds,

Ottawa

University

Projects,

Series

2020,

5.500%,

10/01/51,

144A

10/27

at

103.00

N/R

332,555

600

Phoenix

Industrial

Development

Authority,

Arizona,

Education

Facility

Revenue

Bonds,

Basis

Schools,

Inc.

Projects,

Series

2016A,

5.000%,

7/01/35,

144A

7/25

at

100.00

BB

607,428

280

Phoenix

Industrial

Development

Authority,

Arizona,

Education

Facility

Revenue

Bonds,

Northwest

Christian

School

Project,

Series

2020A,

5.000%,

9/01/55,

144A

9/30

at

100.00

Ba2

257,169

2,700

Phoenix

Industrial

Development

Authority,

Arizona,

Lease

Revenue

Bonds,

Guam

Facilities

Foundation,

Inc.

Project,

Series

2014,

5.375%,

2/01/41

2/24

at

100.00

B+

2,710,773

500

Pima

County

Industrial

Development

Authority,

Arizona,

Education

Facility

Revenue

Bonds,

American

Leadership

Academy

Project,

Series

2019,

5.000%,

6/15/52,

144A

6/25

at

100.00

N/R

501,290

Nuveen

Municipal

Credit

Opportunities

Fund

(continued)

Portfolio

of

Investments

July

31,

2022

(Unaudited)

2

NMCO

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Arizona

(continued)

$

1,000

Pima

County

Industrial

Development

Authority,

Arizona,

Education

Facility

Revenue

Bonds,

Edkey

Charter

Schools

Project,

Series

2019,

5.875%,

7/01/51,

144A

7/26

at

103.00

N/R

$

1,042,060

50

Pima

County

Industrial

Development

Authority,

Arizona,

Education

Facility

Revenue

Bonds,

Imagine

East

Mesa

Charter

Schools

Project,

Series

2019,

5.000%,

7/01/49,

144A

7/26

at

100.00

N/R

48,416

380

Pima

County

Industrial

Development

Authority,

Arizona,

Education

Facility

Revenue

Bonds,

Synergy

Public

Charter

School

Project,

Series

2020,

5.250%,

6/15/50,

144A

6/28

at

100.00

N/R

338,797

1,000

Sierra

Vista

Industrial

Development

Authority,

Arizona,

Economic

Development

Revenue

Bonds,

Convertible

Capital

Appreciation

Revenue

Bonds,

Series

2021A,

5.375%,

10/01/56

10/29

at

103.00

N/R

687,920

Tempe

Industrial

Development

Authority,

Arizona,

Revenue

Bonds,

Mirabella

at

ASU

Project,

Series

2017A:

2,205

6.000%,

10/01/37,

144A

10/27

at

100.00

N/R

2,204,780

2,350

6.125%,

10/01/52,

144A

10/27

at

100.00

N/R

2,313,222

28,960

Total

Arizona

28,619,205

Arkansas

-

1.9%

(1.2%

of

Total

Investments)

14,050

Arkansas

Development

Finance

Authority,

Industrial

Development

Revenue

Bonds,

Big

River

Steel

Project,

Series

2019,

4.500%,

9/01/49,

(AMT),

144A

9/26

at

103.00

Ba3

13,726,569

California

-

9.0%

(5.5%

of

Total

Investments)

3,000

California

Community

Housing

Agency,

California,

Essential

Housing

Revenue

Bonds,

K

Street

Flats,

Series

2021A-2,

4.000%,

8/01/50,

144A

8/32

at

100.00

N/R

2,328,960

4,500

California

Community

Housing

Agency,

California,

Essential

Housing

Revenue

Bonds,

Serenity

at

Larkspur

Apartments,

Series

2020A,

5.000%,

2/01/50,

144A

2/30

at

100.00

N/R

4,357,440

1,500

California

Community

Housing

Agency,

California,

Essential

Housing

Revenue

Bonds,

Stoneridge

Apartments,

Series

2021A,

4.000%,

2/01/56,

144A

2/31

at

100.00

N/R

1,257,555

1,555

California

County

Tobacco

Securitization

Agency,

Tobacco

Settlement

Asset-Backed

Bonds,

Los

Angeles

County

Securitization

Corporation,

Series

2020B-2,

0.010%,

6/01/55

6/30

at

26.72

N/R

289,401

1,530

California

Enterprise

Development

Authority,

Charter

School

Revenue

Bonds,

Norton

Science

and

Language

Academy

Project,

Series

2020,

6.250%,

7/01/58,

144A

7/27

at

102.00

N/R

1,444,641

4,000

California

Municipal

Finance

Authority,

Revenue

Bonds,

Simpson

University,

Series

2020A,

6.000%,

10/01/50,

144A

10/27

at

103.00

N/R

4,284,480

2,000

California

Municipal

Finance

Authority,

Special

Facility

Revenue

Bonds,

United

Airlines,

Inc.

Los

Angeles

International

Airport

Project,

Series

2019,

4.000%,

7/15/29,

(AMT)

No

Opt.

Call

B+

2,003,580

1,385

California

Public

Finance

Authority,

Charter

School

Lease

Revenue

Bonds,

California

Crosspoint

Academy

Project,

Series

2020A,

5.125%,

7/01/55,

144A

7/28

at

100.00

N/R

1,261,458

320

California

Public

Finance

Authority,

Senior

Living

Revenue

Bonds,

Enso

Village,

Refunding

Green

Series

2021A,

5.000%,

11/15/51,

144A

11/29

at

102.00

N/R

314,656

California

School

Finance

Authority,

California,

Charter

School

Revenue

Bonds,

Encore

Education

Obligated

Group,

Series

2016A:

4,020

5.000%,

6/01/42,

144A

6/26

at

100.00

N/R

3,329,444

4,380

5.000%,

6/01/52,

144A

6/26

at

100.00

N/R

3,405,363

1,260

California

School

Finance

Authority,

California,

Charter

School

Revenue

Bonds,

Encore

Education,

Series

2022,

8.000%,

7/01/30,

144A

8/22

at

100.00

N/R

1,260,227

3

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

California

(continued)

California

School

Finance

Authority,

Charter

School

Revenue

Bonds,

Arts

in

Action

Charter

Schools

-

Obligated

Group,

Series

2020A:

$

1,410

5.000%,

6/01/50,

144A

6/27

at

100.00

N/R

$

1,420,124

700

5.000%,

6/01/59,

144A

6/27

at

100.00

N/R

702,331

1,000

California

School

Finance

Authority,

Charter

School

Revenue

Bonds,

Scholarship

Prep

Public

Schools

Obligated

Group,

Series

2020A,

5.000%,

6/01/60,

144A

6/28

at

100.00

N/R

812,100

2,065

California

Statewide

Communities

Development

Authority,

California,

Revenue

Bonds,

Loma

Linda

University

Medical

Center,

Series

2014A,

5.500%,

12/01/54

12/24

at

100.00

BB

2,111,070

California

Statewide

Communities

Development

Authority,

California,

Revenue

Bonds,

Loma

Linda

University

Medical

Center,

Series

2016A:

1,480

5.000%,

12/01/41,

144A

6/26

at

100.00

BB

1,494,045

10,090

5.250%,

12/01/56,

144A

6/26

at

100.00

BB

10,201,394

1,095

California

Statewide

Communities

Development

Authority,

California,

Revenue

Bonds,

Loma

Linda

University

Medical

Center,

Series

2018A,

5.500%,

12/01/58,

144A

6/28

at

100.00

BB

1,123,525

California

Statewide

Community

Development

Authority,

Revenue

Bonds,

Daughters

of

Charity

Health

System,

Series

2005A:

110

5.750%,

7/01/24

(4),(5)

9/22

at

100.00

N/R

110,251

2

5.750%,

7/01/30

(4),(5)

9/22

at

100.00

N/R

1,395

53

5.750%,

7/01/35

2035

2035

(4),(5)

9/22

at

100.00

N/R

52,858

87

California

Statewide

Community

Development

Authority,

Revenue

Bonds,

Daughters

of

Charity

Health

System,

Series

2005G,

5.500%,

7/01/22

(4),(5)

No

Opt.

Call

N/R

86,526

39

California

Statewide

Community

Development

Authority,

Revenue

Bonds,

Daughters

of

Charity

Health

System,

Series

2005H,

5.750%,

7/01/25

(4),(5)

9/22

at

100.00

N/R

39,425

25,000

California

Statewide

Financing

Authority,

Tobacco

Settlement

Asset-

Backed

Bonds,

Pooled

Tobacco

Securitization

Program,

Series

2006A,

0.000%,

6/01/46

8/22

at

23.12

N/R

5,768,500

2,500

CSCDA

Community

Improvement

Authority,

California,

Essential

Housing

Revenue

Bonds,

Vineyard

Gardens

Apartments,

Senior

Lien

Series

2021A,

3.250%,

10/01/58,

144A

4/32

at

100.00

N/R

1,858,425

2,000

CSCDA

Community

Improvement

Authority,

California,

Essential

Housing

Revenue

Bonds,

Wood

Creek

Apartments,

Mezzanine

Lien

Series

2021A-2,

4.000%,

12/01/58

6/32

at

100.00

N/R

1,669,300

5,000

Foothill/Eastern

Transportation

Corridor

Agency,

California,

Toll

Road

Revenue

Bonds,

Refunding

Senior

Lien

Series

2021A,

4.000%,

1/15/46,

(UB)

(6)

1/31

at

100.00

A-

4,999,200

55,565

Golden

State

Tobacco

Securitization

Corporation,

California,

Tobacco

Settlement

Asset-Backed

Bonds,

Capital

Appreciation

Series

2021B-2,

0.000%,

6/01/66

12/31

at

27.75

N/R

7,098,428

137,646

Total

California

65,086,102

Colorado

-

10.9%

(6.6%

of

Total

Investments)

3,000

Aurora

Highlands

Community

Authority

Board,

Adams

County,

Colorado,

Special

Tax

Revenue

Bonds,

Refunding

&

Improvement

Series

2021A,

5.750%,

12/01/51

12/28

at

103.00

N/R

2,888,550

2,000

Bradley

Heights

Metropolitan

District

2,

Colorado

Springs,

El

Paso

County,

Colorado,

General

Obligation

Limited

Tax

Bonds,

Series

2021A-3,

4.750%,

12/01/51

9/26

at

103.00

N/R

1,616,060

Nuveen

Municipal

Credit

Opportunities

Fund

(continued)

Portfolio

of

Investments

July

31,

2022

(Unaudited)

4

NMCO

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Colorado

(continued)

$

1,000

Broadway

Station

Metropolitan

District

3,

Denver

City

and

County,

Colorado,

General

Obligation

Limited

Tax

Bonds,

Convertible

to

Unlimited

Series

2019A,

5.000%,

12/01/49

6/24

at

103.00

N/R

$

975,480

1,000

Broadway

Station

Metropolitan

District

3,

Denver

City

and

County,

Colorado,

General

Obligation

Limited

Tax

Bonds,

Subordinate

Convertible

to

Senior

Capital

Appreciation

Series

2019B,

7.500%,

12/01/49

6/24

at

79.97

N/R

642,440

500

Colorado

Educational

and

Cultural

Facilities

Authority,

Charter

School

Revenue

Bonds

World

Compass

Academy

Project,

Series

2017,

5.375%,

10/01/37

10/27

at

100.00

N/R

468,650

3,145

Colorado

Educational

and

Cultural

Facilities

Authority,

Charter

School

Revenue

Bonds,

Belle

Creek

Charter

School,

Series

2022A,

5.250%,

3/15/52,

144A

3/32

at

100.00

N/R

3,158,932

Colorado

Educational

and

Cultural

Facilities

Authority,

Charter

School

Revenue

Bonds,

Loveland

Classical

Schools

Project,

Series

2016:

525

3.750%,

7/01/26,

144A

No

Opt.

Call

BB

510,447

500

5.000%,

7/01/36,

144A

7/26

at

100.00

BB

502,265

10,170

Colorado

Educational

and

Cultural

Facilities

Authority,

Revenue

Bonds,

Rocky

Mountain

Classical

Academy

Project,

Refunding

Series

2019,

5.000%,

10/01/59,

144A

10/27

at

100.00

Ba1

10,101,251

12,485

Colorado

Health

Facilities

Authority,

Colorado,

Revenue

Bonds,

CommonSpirit

Health,

Series

2019A-2,

3.250%,

8/01/49

8/29

at

100.00

BBB+

9,784,120

1,000

Copper

Ridge

Metropolitan

District,

Colorado

Springs,

Colorado,

Tax

Increment

and

Sales

Tax

Supported

Revenue

Bonds,

Series

2019,

5.000%,

12/01/39

12/24

at

103.00

N/R

982,210

2,000

Crossroads

Metropolitan

District

1,

El

Paso

County,

Colorado,

Limited

Tax

General

Obligation

and

Special

Revenue

Bonds,

Series

2022,

6.500%,

12/01/51

12/29

at

103.00

N/R

2,015,460

14,000

Hess

Ranch

Metropolitan

District

6,

Parker,

Colorado,

Limited

Tax

General

Obligation

Bonds,

Convertible

Capital

Appreciation

Series

2020A-2,

0.000%,

12/01/49

(7)

3/25

at

93.28

N/R

10,664,920

5,500

Hess

Ranch

Metropolitan

District

6,

Parker,

Colorado,

Limited

Tax

General

Obligation

Bonds,

Series

2020A-1,

5.000%,

12/01/49

3/25

at

103.00

N/R

5,435,430

1,075

Indy

Oak

Tod

Metropolitan

District,

Lakewood,

Jefferson

County,

Colorado,

Limited

Tax  General

Obligation

Bonds,

Convertible

to

Unlimited

Tax

Series

2020A,

5.500%,

12/01/50,

144A

6/25

at

103.00

N/R

1,079,483

500

Iron

Mountain

Metropolitan

District

2,

Windsor,

Weld

County,

Colorado,

Limited

Tax

General

Obligation

Bonds,

Refunding

&

Improvement

Series

2019A,

5.000%,

12/01/49

12/24

at

103.00

N/R

475,955

1,000

Lanterns

Metropolitan

District

2,

Castle

Rock,

Douglas

County,

Colorado,

Limited

Tax

General

Obligation

Bonds,

Series

2021A-3,

4.500%,

12/01/50

9/26

at

103.00

N/R

801,790

500

Mountain

Shadows

Metropolitan

District,

Colorado,

General

Obligation

Limited

Tax

Bonds,

Refunding

Series

2016,

4.000%,

12/01/26

12/25

at

100.00

N/R

498,400

1,000

North

Range

Metropolitan

District

3,

Adams

County,

Colorado,

Limited

Tax

General

Obligation

Bonds,

Series

2020A-3,

5.250%,

12/01/50

12/25

at

103.00

N/R

991,180

515

North

Vista

Highlands

Metropolitan

District

3,

Pueblo

County,

Colorado,

Limited

Tax

General

Obligation

Bonds,

Series

2020,

5.125%,

12/01/49

3/25

at

103.00

N/R

510,097

Painted

Prairie

Public

Improvement

Authority,

Aurora,

Colorado,

Special

Revenue

Bonds,

Series

2019:

5,000

5.000%,

12/01/39

12/24

at

103.00

N/R

5,068,550

5,000

5.000%,

12/01/49

12/24

at

103.00

N/R

5,007,250

5

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Colorado

(continued)

$

1,000

Palisade

Metropolitan

District

2,

Broomfield

County,

Colorado,

General

Obligation

Limited

Tax

Bonds,

Subordinate

Series

2019,

7.250%,

12/15/49

12/24

at

103.00

N/R

$

951,640

705

Penrith

Park

Metropolitan

District,

Adams

County,

Colorado,

General

Obligation

Limited

Tax

Bonds,

Series

2019A,

5.000%,

12/01/49

12/24

at

103.00

N/R

691,746

4,445

Pioneer

Community

Authority

Board

(Weld

County,

Colorado),

Special

Revenue

Bonds,

Series

2022,

6.500%,

12/01/34

6/29

at

103.00

N/R

4,356,056

1,200

Sky

Ranch

Community

Authority

Board,

Arapahoe

County,

Colorado,

Limited

Tax

Supported

District

1

Revenue

Bonds,

Senior

Series

2019A,

5.000%,

12/01/49

12/24

at

102.00

N/R

1,223,292

880

Sky

Ranch

Community

Authority

Board,

Arapahoe

County,

Colorado,

Limited

Tax

Supported

District

1

Revenue

Bonds,

Subordinate

Series

2019B,

7.625%,

12/15/49

12/24

at

102.00

N/R

935,968

500

STC

Metropolitan

District

2,

Superior,

Boulder

County,

Colorado,

Limited

Tax

General

Obligation

and

Special

Revenue

Bonds,

Refunding

&

improvement

Series

2019A,

5.000%,

12/01/49

12/24

at

103.00

N/R

500,290

760

Talon

Pointe

Metropolitan

District,

Adams

County,

Colorado,

Limited

Tax

General

Obligation

Bonds,

Convertible

to

Unlimited

Tax

Refunding

&

Improvement

Series

2019A,

5.250%,

12/01/51

12/25

at

103.00

N/R

675,982

Thompson

Crossing

Metropolitan

District

4,

Johnstown,

Larimer

County,

Colorado,

General

Obligation

Bonds,

Limited

Tax

Convertible

to

Unlimited

Tax,

Refunding

&

Improvement

Series

2019:

1,400

5.000%,

12/01/39

9/24

at

103.00

N/R

1,418,732

2,125

5.000%,

12/01/49

9/24

at

103.00

N/R

2,118,561

1,000

Ward

TOD

Metropolitan

District

1,

Wheat

Ridge,

Jefferson

County,

Colorado,

Limited

Tax

General

Obligation

Bonds,

Convertible

to

Unlimited

Tax

Series

2019A,

5.000%,

12/01/49

12/24

at

103.00

N/R

978,050

1,000

Willow

Bend

Metropolitan

District,

City

of

Thornton,

Adams

County,

Colorado,

Limited

Tax

General

Obligation

Bonds,

Convertible

to

Unlimited

Tax

Series

2019A,

5.000%,

12/01/49

9/24

at

103.00

N/R

978,050

86,430

Total

Colorado

79,007,287

District

of

Columbia

-

3.0%

(1.8%

of

Total

Investments)

87,000

District

of

Columbia

Tobacco

Settlement

Corporation,

Tobacco

Settlement

Asset-Backed

Bonds,

Series

2006A,

0.000%,

6/15/46

8/22

at

23.12

N/R

20,023,050

2,000

District

of

Columbia,

Revenue

Bonds,

Saint

Paul

on

Fouth

Street,

Inc.,

Series

2019A,

5.250%,

5/15/55,

144A

5/30

at

100.00

N/R

1,599,160

89,000

Total

District

of

Columbia

21,622,210

Florida

-

20.0%

(12.1%

of

Total

Investments)

Academical

Village

Community

Development

District,

Davie,

Florida,

Special

Assessment

Revenue

Bonds,

Series

2020:

2,000

3.625%,

5/01/40

5/30

at

100.00

N/R

1,750,640

1,000

4.000%,

5/01/51

5/30

at

100.00

N/R

883,900

Cape

Coral

Health

Facilities

Authority,

Florida,

Senior

Housing

Revenue

Bonds,

Gulf

Care

Inc.

Project,

Series

2015:

4,370

5.875%,

7/01/40,

144A

7/25

at

100.00

N/R

4,376,074

2,500

6.000%,

7/01/45,

144A

7/25

at

100.00

N/R

2,503,800

Capital

Trust

Agency,

Florida,

Educational

Facilities

Lease

Revenue

Bonds,

Franklin

Academy

Projects,

Series

2020:

140

5.000%,

12/15/35,

144A

7/26

at

100.00

N/R

141,646

100

5.000%,

12/15/50,

144A

7/26

at

100.00

N/R

99,244

Nuveen

Municipal

Credit

Opportunities

Fund

(continued)

Portfolio

of

Investments

July

31,

2022

(Unaudited)

6

NMCO

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Florida

(continued)

$

100

Capital

Trust

Agency,

Florida,

Educational

Facilities

Revenue

Bonds,

Imagine

School

at

Land

O'Lakes

Project,

Series

2020A,

5.000%,

12/15/49,

144A

12/30

at

100.00

Ba1

$

100,061

1,950

Capital

Trust

Agency,

Florida,

Educational

Facilities

Revenue

Bonds,

Pineapple

Cove

Classical

Academy,

Series

2019A,

5.125%,

7/01/39,

144A

1/29

at

100.00

N/R

1,977,027

725

Capital

Trust

Agency,

Florida,

Revenue

Bonds,

Provision

CARES

Proton

Therapy

Center,

Orlando

Project,

Series

2018,

7.500%,

6/01/48,

144A

(4)

6/28

at

100.00

N/R

152,246

1,000

Capital

Trust

Agency,

Florida,

Revenue

Bonds,

Tuscan

Gardens

Senior

Living

Community

Project,

Series

2015A,

7.000%,

4/01/49

(4)

8/22

at

103.00

N/R

620,000

Capital

Trust

Agency,

Florida,

Senior

Living

Facilities

Revenue

Bonds,

Elim

Senior

Housing,

Inc.

Project,

Series

2017:

1,490

5.625%,

8/01/37,

144A

8/24

at

103.00

N/R

1,231,619

3,735

5.875%,

8/01/52,

144A

8/24

at

103.00

N/R

2,864,409

170

Cypress

Preserve

Community

Development

District,

Pasco

County,

Florida,

Special

Assessment

Bonds,

Assessment

Area

2,

Series

2019,

4.125%,

11/01/50

11/29

at

100.00

N/R

153,962

Epperson

North

Community

Development

District,

Florida,

Capital

Improvement

Revenue

Bonds,

Assessment

Area

1,

Series

2018A-1:

1,000

5.500%,

11/01/39,

144A

11/29

at

100.00

N/R

1,038,620

1,000

5.750%,

11/01/49,

144A

11/29

at

100.00

N/R

1,039,570

Florida

Development

Finance

Corporation,

Educational

Facilities

Revenue

Bonds,

Miami

Arts

Charter

School

Projects,

Series

2014:

165

5.000%,

6/15/24,

144A

No

Opt.

Call

N/R

161,569

2,500

5.875%,

6/15/34,

144A

6/24

at

100.00

N/R

2,305,800

5,795

6.000%,

6/15/44,

144A

6/24

at

100.00

N/R

5,097,630

Florida

Development

Finance

Corporation,

Educational

Facilities

Revenue

Bonds,

Pepin

Academies

of

Pasco

County

Inc.,

Series

2020A:

2,435

5.000%,

1/01/40,

144A

1/27

at

100.00

N/R

2,445,397

500

5.000%,

1/01/50,

144A

1/27

at

100.00

N/R

492,635

1,575

Florida

Development

Finance

Corporation,

Educational

Facilities

Revenue

Bonds,

Southwest

Charter

Foundation

Inc

Projects,

Series

2017A,

6.000%,

6/15/37,

144A

6/27

at

100.00

N/R

1,578,150

28,365

Florida

Development

Finance

Corporation,

Florida,

Surface

Transportation

Facility

Revenue

Bonds,

Brightline

Passenger

Rail

Project,

Green

Series

2019B,

7.375%,

1/01/49,

(AMT),

144A

1/24

at

107.00

N/R

28,402,442

Florida

Development

Finance

Corporation,

Florida,

Surface

Transportation

Facility

Revenue

Bonds,

Virgin

Trains

USA

Passenger

Rail

Project,

Series

2019A:

7,535

6.250%,

1/01/49,

(AMT),

(Mandatory

Put

1/01/24),

144A

8/22

at

102.00

N/R

7,479,392

3,200

6.375%,

1/01/49,

(AMT),

(Mandatory

Put

1/01/26),

144A

8/22

at

103.00

N/R

3,137,088

40,225

6.500%,

1/01/49,

(AMT),

(Mandatory

Put

1/01/29),

144A

8/22

at

103.00

N/R

38,835,226

3,585

Florida

Development

Finance

Corporation,

Revenue

Bonds,

Brightline

Passenger

Rail

Expansion

Project,

Series

2021A-1,

6.750%,

12/01/56,

(AMT),

(Mandatory

Put

8/15/23),

144A

8/22

at

102.50

N/R

3,562,415

3,000

Florida

Development

Finance

Corporation,

Senior

Living

Revenue

Bonds,

Glenridge

on

Palmer

Ranch

Project,

Refunding

Series

2021,

5.000%,

6/01/51

6/28

at

103.00

N/R

2,712,480

7

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Florida

(continued)

Greater

Orlando

Aviation

Authority,

Florida,

Special

Purpose

Airport

Facilities

Revenue

Bonds,

JetBlue

Airways

Corporation,

Series

2013:

$

2,500

5.000%,

11/15/26,

(AMT)

5/23

at

100.00

N/R

$

2,533,500

1,740

5.000%,

11/15/36,

(AMT)

5/23

at

100.00

N/R

1,753,746

1,180

Lee

County

Industrial

Development

Authority,

Florida,

Charter

School

Revenue

Bonds,

Lee

County

Community

Charter

Schools,

Series

2007A,

5.250%,

6/15/27

8/22

at

100.00

BB-

1,180,909

Lee

County

Industrial

Development

Authority,

Florida,

Healthcare

Facilities

Revenue

Bonds,

Preserve

Project,

Series

2017A:

1,000

5.375%,

12/01/32,

144A

12/22

at

105.00

N/R

880,450

1,100

5.625%,

12/01/37,

144A

12/22

at

105.00

N/R

936,969

1,300

5.750%,

12/01/52,

144A

12/22

at

105.00

N/R

1,018,849

690

LT

Ranch

Community

Development

District,

Sarasota

County,

Florida,

Capital

Improvement

Revenue

Bonds,

Series

2019,

4.000%,

5/01/40

5/30

at

100.00

N/R

645,799

Miami

Health

Facilities

Authority,

Florida,

Health

Facilities

Revenue

Bonds,

Miami

Jewish

Health

System

Inc.

Project,

Series

2017:

1,260

5.000%,

7/01/26

No

Opt.

Call

BB+

1,240,193

1,000

5.000%,

7/01/27

No

Opt.

Call

BB+

979,390

1,410

Miami

World

Center

Community

Development

District,

Miami-Dade

County,

Florida,

Special

Assessment

Bonds,

Series

2017,

5.125%,

11/01/39

11/27

at

100.00

N/R

1,457,884

4,935

North

Springs

Improvement

District,

Browaard

County,

Florida,

Special

Assessment

Bonds,

Area

C,

Series

2017,

5.000%,

5/01/38

5/28

at

100.00

N/R

5,023,731

500

Osceola

County,

Florida,

Transportation

Revenue

Bonds,

Osceola

Parkway,

Refunding

&

Improvement

Capital

Appreciation

Series

2019A-2,

0.000%,

10/01/54

10/29

at

40.38

BBB+

104,810

100

Parker

Road

Community

Development

District,

Florida,

Capital

Improvement

Revenue

Bonds,

Refudning

Series

2020,

3.875%,

5/01/40

5/30

at

100.00

N/R

90,768

125

Portico

Community

Development

District,

Lee

County,

Florida,

Special  Assessment,

Refunding

Improvement

Series

2020-1,

3.500%,

5/01/37

5/30

at

100.00

N/R

110,415

Seminole

County

Industrial

Development

Authority,

Florida,

Retirement

Facility

Revenue

Bonds,

Legacy

Pointe

At

UCF

Project,

Series

2019A:

3,970

5.500%,

11/15/49

11/26

at

103.00

N/R

3,679,634

2,440

5.750%,

11/15/54

11/26

at

103.00

N/R

2,319,855

2,405

Three

Rivers

Community

Development

District,

Florida,

Special

Assessment

Revenue

Bonds,

Series

2019A-1,

4.750%,

5/01/50

5/29

at

100.00

N/R

2,402,379

75

Three

Rivers

Community

Development

District,

Florida,

Special

Assessment

Revenue

Bonds,

Series

2019A-2,

4.750%,

5/01/29

No

Opt.

Call

N/R

75,727

1,700

Twin

Creeks

North

Community

Development

District,

Florida,

Special

Assessment

Bonds,

Master

Infrastructure

Improvements,

Series

2016A-

1,

6.375%,

11/01/47

11/31

at

100.00

N/R

1,788,876

500

West

Villages

Improvement

District,

Florida,

Special

Assessment

Revenue

Bonds,

Unit

of

Development

1,

Series

2017,

4.000%,

5/01/27

No

Opt.

Call

N/R

502,250

900

Westside

Community

Development

District,

Florida,

Special

Assessment

Revenue

Bonds,

Refunding

Series

2019,

4.125%,

5/01/38,

144A

5/29

at

100.00

N/R

866,502

150,990

Total

Florida

144,735,678

Nuveen

Municipal

Credit

Opportunities

Fund

(continued)

Portfolio

of

Investments

July

31,

2022

(Unaudited)

8

NMCO

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Georgia

-

2.3%

(1.4%

of

Total

Investments)

Atlanta

Development

Authority,

Georgia,

Senior

Health

Care

Facilities

Revenue

Bonds,

Georgia

Proton

Treatment

Center

Project,

Current

Interest

Series

2017A-1:

$

1,250

6.500%,

1/01/29

(4)

1/28

at

100.00

N/R

$

662,500

7,030

6.750%,

1/01/35

(4)

1/28

at

100.00

N/R

3,725,900

18,430

7.000%,

1/01/40

(4)

1/28

at

100.00

N/R

9,767,900

1,500

Geo.

L.

Smith

II

Georgia

World

Congress

Center

Authority,

Georgia,

Convention

Center

Hotel

Revenue

Bonds,  First

Tier

Series

2021A,

4.000%,

1/01/54

1/31

at

100.00

BBB-

1,358,550

441

Georgia

Local

Governments,

Certificates

of

Participation,

Georgia

Municipal

Association,

Series

1998A,

4.750%,

6/01/28

-

NPFG

Insured

No

Opt.

Call

Baa2

477,898

850

White

County

Development

Authority,

Georgia,

Revenue

Bonds

Truett

McConnell

University,

Series

2019,

5.125%,

10/01/39

10/26

at

103.00

N/R

811,903

29,501

Total

Georgia

16,804,651

Guam

-

0.6%

(0.3%

of

Total

Investments)

3,860

Guam

Government,

General

Obligation

Bonds,

Series

2019,

5.000%,

11/15/31,

(AMT)

5/29

at

100.00

Ba1

4,116,381

Hawaii

-

0.1%

(0.1%

of

Total

Investments)

1,150

Hawaii

Department

of

Budget

and

Finance,

Special

Purpose

Revenue

Bonds,

Chaminade

University

of

Honolulu,

Series

2015A,

5.000%,

1/01/45,

144A

1/25

at

100.00

BB+

1,105,000

Illinois

-

15.0%

(9.1%

of

Total

Investments)

2,800

Chicago,

Illinois,

General

Obligation

Bonds,

Refunding

Series

2016C,

5.000%,

1/01/38

1/26

at

100.00

BBB+

2,900,772

5,000

Chicago,

Illinois,

General

Obligation

Bonds,

Series

2019A,

5.500%,

1/01/49

1/29

at

100.00

BBB+

5,356,150

3,965

Chicago,

Illinois,

General

Obligation

Bonds,

VAribale

Rate

Demand

Series

2007F,

5.500%,

1/01/42

1/25

at

100.00

BBB+

4,117,930

335

Evergreen

Park,

Cook

County,

Illinois,

Sales

Tax

Revenue

Bonds,

Evergreen

Plaza

Development

Project,

Senior

Lien

Series

2019A,

4.375%,

12/01/36,

144A

12/29

at

100.00

N/R

298,555

10,850

Illinois

Finance

Authority,

Revenue

Bonds,

Admiral

at

the

Lake

Project,

Refunding

Series

2017,

5.250%,

5/15/54

5/24

at

103.00

N/R

8,789,694

5,000

Illinois

Finance

Authority,

Student

Housing

Revenue

Bonds,

CHF-

Collegiate

Housing

Foundation

-

Cook

LLC

Northeastern

Illinois

University

Project,

Series

2015A,

5.000%,

7/01/47

7/25

at

100.00

B-

3,956,400

9,945

Illinois

State,

General

Obligation

Bonds,

June

Series

2022A,

5.500%,

3/01/47,

(UB)

(6)

3/32

at

100.00

N/R

11,164,158

4,840

Illinois

State,

General

Obligation

Bonds,

May

Series

2018A,

5.000%,

5/01/32

5/28

at

100.00

BBB

5,229,039

890

Illinois

State,

General

Obligation

Bonds,

May

Series

2020,

5.500%,

5/01/39

5/30

at

100.00

BBB

993,204

4,600

Illinois

State,

General

Obligation

Bonds,

November

Series

2017D,

5.000%,

11/01/28

11/27

at

100.00

BBB

5,035,436

10,000

Illinois

State,

General

Obligation

Bonds,

November

Series

2017D,

5.000%,

11/01/28,

(UB)

(6)

11/27

at

100.00

BBB

10,946,600

Illinois

State,

General

Obligation

Bonds,

November

Series

2019C:

15,000

4.000%,

11/01/43

11/29

at

100.00

BBB

14,209,050

4,000

4.000%,

11/01/44

11/29

at

100.00

BBB

3,767,200

9

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Illinois

(continued)

$

7,935

Metropolitan

Pier

and

Exposition

Authority,

Illinois,

McCormick

Place

Expansion

Project

Bonds,

Refunding

Series

2020A,

5.000%,

6/15/50

12/29

at

100.00

BBB+

$

8,247,877

Metropolitan

Pier

and

Exposition

Authority,

Illinois,

McCormick

Place

Expansion

Project

Bonds,

Series

2012B:

3,135

0.010%,

12/15/50

No

Opt.

Call

BBB+

788,891

2,500

0.000%,

12/15/51

No

Opt.

Call

BBB+

597,175

Metropolitan

Pier

and

Exposition

Authority,

Illinois,

McCormick

Place

Expansion

Project

Bonds,

Series

2017A:

22,000

0.000%,

12/15/56

-

BAM

Insured

No

Opt.

Call

AA

4,642,660

22,500

0.010%,

12/15/56

-

AGM

Insured

No

Opt.

Call

AA

4,748,175

4,565

5.000%,

6/15/57

12/27

at

100.00

BBB+

4,714,276

10,000

Metropolitan

Pier

and

Exposition

Authority,

Illinois,

McCormick

Place

Expansion

Project

Bonds,

Series

2017B,

0.000%,

12/15/56

-

AGM

Insured

No

Opt.

Call

AA

2,110,300

2,500

Metropolitan

Pier

and

Exposition

Authority,

Illinois,

McCormick

Place

Expansion

Project

Bonds,

Series

2020B,

5.000%,

6/15/42

12/30

at

100.00

BBB+

2,633,975

500

Morton

Grove,

Illinois,

Tax

Increment

Revenue

Bonds,

Sawmill

Station

Redevelopment

Project,

Senior

Lien

Series

2019,

5.000%,

1/01/39

1/26

at

100.00

N/R

480,485

Sales

Tax

Securitization

Corporation,

Illinois,

Sales

Tax

Securitzation

Bonds,

Second

Lien

Series

2020A:

150

4.000%,

1/01/38

1/30

at

100.00

AA-

150,744

120

4.000%,

1/01/39

1/30

at

100.00

AA-

120,332

1,000

Yorkville

United

City

Business

District,

Illinois,

Storm

Water

and

Water

Improvement

Project

Revenue

Bonds,

Series

2007,

4.800%,

1/01/26

(4)

8/22

at

100.00

N/R

410,000

897

Yorkville

United

City,

Kendall

County,

Illinois,

Sales

Tax

Revenue

Bonds,

Kendall

Marketplace

Project,

Series

2007,

6.000%,

1/01/26

(4)

7/22

at

100.00

N/R

896,615

850

Yorkville,

Illinois,

Special

Tax

Bonds,

Special

Service

Area

2006-113

Cannoball

&

Beecher,

Series

2007,

5.750%,

3/01/28

8/22

at

100.00

N/R

850,298

155,877

Total

Illinois

108,155,991

Indiana

-

0.9%

(0.5%

of

Total

Investments)

140

Anderson,

Indiana,

Multifamily

Housing

Revenue

Bonds,

Sweet

Galilee

at

the

Wigwam

Project,

Series

2020A,

5.375%,

1/01/40,

144A

1/27

at

102.00

N/R

124,919

3,105

Indiana

Finance

Authority,

Educational

Facilities

Revenue

Bonds,

Earlham

College,

Refunding

Series

2013,

5.000%,

10/01/32

10/23

at

100.00

N/R

3,175,018

500

Indiana

Finance

Authority,

Environmental

Improvement

Revenue

Bonds,

United

States

Steel

Corporation

Project,

Series

2020,

6.750%,

5/01/39,

(AMT)

11/30

at

100.00

B-

584,635

2,325

Valparaiso,

Indiana,

Exempt

Facilities

Revenue

Bonds,

Pratt

Paper

LLC

Project,

Series

2013,

7.000%,

1/01/44,

(AMT)

1/24

at

100.00

N/R

2,430,950

6,070

Total

Indiana

6,315,522

Iowa

-

1.2%

(0.7%

of

Total

Investments)

8,540

Iowa

Finance

Authority,

Iowa,

Midwestern

Disaster

Area

Revenue

Bonds,

Alcoa

Inc.

Project,

Series

2012,

4.750%,

8/01/42

8/22

at

100.00

BBB-

8,539,829

Kansas

-

1.1%

(0.6%

of

Total

Investments)

1,365

Wyandotte

County-Kansas

City

Unified

Government,

Kansas,

Sales

Tax

Special

Obligation

Bonds,

Vacation

Village

Project

Area

1

and

2A,

Series

2015,

5.750%,

9/01/32

9/25

at

100.00

N/R

1,275,701

6,475

Wyandotte

County-Kansas

City

Unified

Government,

Kansas,

Sales

Tax

Special

Obligation

Bonds,

Village

East

Project

Areas

2B

3

and

5,

Series

2022,

5.750%,

3/01/41,

144A

3/29

at

103.00

N/R

6,423,524

7,840

Total

Kansas

7,699,225

Nuveen

Municipal

Credit

Opportunities

Fund

(continued)

Portfolio

of

Investments

July

31,

2022

(Unaudited)

10

NMCO

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Louisiana

-

1.7%

(1.1%

of

Total

Investments)

$

7,005

Louisiana

Local

Government

Environmental

Facilities

and

Community

Development

Authority,

Louisiana,

Revenue

Bonds,

Jefferson

Parish

GOMESA

Project,

Series

2019,

4.000%,

11/01/44,

144A

11/29

at

100.00

N/R

$

5,936,738

260

Louisiana

Publc

Facilities

Authority,

Lousiana,

Revenue

Bonds,

Lake

Charles

College

Prep

Project,

Series

2019A,

5.000%,

6/01/58,

144A

6/27

at

100.00

N/R

224,567

Louisiana

Public

Facilities

Authority,

Louisiana,

Revenue

Bonds,

Tulane

University,

Refunding

Series

2020A:

1,765

4.000%,

4/01/50

4/30

at

100.00

N/R

1,695,459

235

4.000%,

4/01/50,

(Pre-refunded

4/01/30)

4/30

at

100.00

N/R

(8)

260,838

200

Saint

James

Parish,

Louisiana,

Revenue

Bonds,

NuStar

Logistics,

L.P.

Project,

Series

2008,

6.100%,

6/01/38,

(Mandatory

Put

6/01/30),

144A

No

Opt.

Call

BB-

225,690

1,235

Saint

James

Parish,

Louisiana,

Revenue

Bonds,

NuStar

Logistics,

L.P.

Project,

Series

2010,

6.350%,

7/01/40,

144A

6/30

at

100.00

BB-

1,396,464

800

Saint

James

Parish,

Louisiana,

Revenue

Bonds,

NuStar

Logistics,

L.P.

Project,

Series

2010A,

6.350%,

10/01/40,

144A

6/30

at

100.00

BB-

904,592

695

Saint

James

Parish,

Louisiana,

Revenue

Bonds,

NuStar

Logistics,

L.P.

Project,

Series

2010B,

6.100%,

12/01/40,

(Mandatory

Put

6/01/30),

144A

No

Opt.

Call

BB-

784,273

1,085

Saint

James

Parish,

Louisiana,

Revenue

Bonds,

NuStar

Logistics,

L.P.

Project,

Series

2011,

5.850%,

8/01/41,

(Mandatory

Put

6/01/25),

144A

No

Opt.

Call

BB-

1,143,785

13,280

Total

Louisiana

12,572,406

Maryland

-

0.4%

(0.3%

of

Total

Investments)

Baltimore,

Maryland,

Convention

Center

Hotel

Revenue

Bonds,

Refunding

Series

2017:

1,480

5.000%,

9/01/24

No

Opt.

Call

CCC

1,492,817

1,000

5.000%,

9/01/39

9/27

at

100.00

CCC

983,490

680

5.000%,

9/01/46

9/27

at

100.00

CCC

653,208

3,160

Total

Maryland

3,129,515

Massachusetts

-

1.9%

(1.2%

of

Total

Investments)

1,620

Lowell,

Massachusetts,

Collegiate

Charter

School

Revenue

Bonds,

Series

2019,

5.000%,

6/15/54

6/26

at

100.00

N/R

1,620,454

Massachusetts

Development

Finance

Agency

Revenue

Bonds,

Lawrence

General

Hospital

Issue,

Series

2017:

1,000

5.000%,

7/01/37

7/27

at

100.00

B-

899,550

3,900

5.000%,

7/01/42

7/27

at

100.00

B-

3,336,879

9,500

5.000%,

7/01/47

7/27

at

100.00

B-

7,937,440

16,020

Total

Massachusetts

13,794,323

Michigan

-

0.5%

(0.3%

of

Total

Investments)

40

Advanced

Technology

Academy,

Michigan,

Public

School

Academy

Revenue

Bonds,

Refunding

Series

2019,

5.000%,

11/01/44

11/27

at

102.00

BB

39,468

74,130

Michigan

Tobacco

Settlement

Finance

Authority,

Tobacco

Settlement

Asset-Backed

Revenue

Bonds,

Capital

Appreciation

Turbo

Term

Series

2008C,

0.010%,

6/01/58

6/33

at

11.41

N/R

3,392,189

74,170

Total

Michigan

3,431,657

Minnesota

-

0.9%

(0.6%

of

Total

Investments)

500

Bethel,

Minnesota

Charter

School

Lease

Revenue

Bonds,

Partnership

Academy

Project,

Series

2018A,

5.000%,

7/01/53

7/26

at

102.00

N/R

452,725

1,300

Brooklyn

Park,

Minnesota,

Charter

School

Lease

Revenue

Bonds,

Athlos

Leadership

Academy

Project,

Series

2015A,

5.750%,

7/01/46

7/25

at

100.00

N/R

1,311,349

2,440

Columbia

Heights,

Minnesota,

Charter

School

Lease

Revenue

Bonds,

Prodeo

Academy

Project,

Series

2019A,

5.000%,

7/01/54

7/27

at

102.00

N/R

2,221,620

11

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Minnesota

(continued)

$

130

Minneapolis,

Minnesota,

Charter

School

Lease

Revenue

Bonds,

Friendship

Academy

of

the

Arts

Project,

Series

2019A,

5.250%,

12/01/52,

144A

12/27

at

100.00

N/R

$

122,663

30

Minneapolis,

Minnesota,

Charter

School

Lease

Revenue

Bonds,

Northeast

College

Prep

Project,

Series

2020A,

5.000%,

7/01/40

7/30

at

100.00

N/R

28,898

2,040

Saint

Cloud,

Minnesota,

Charter

School

Lease

Revenue

Bonds,

Athlos

Academy,

Series

2022A,

5.875%,

6/01/57,

144A

6/30

at

102.00

N/R

2,002,709

1,000

Scanlon,

Minnesota,

Health

Care

Facilities

Revenue

Bonds,

Duluth

Health

Services

Project,

Refunding

Series

2020,

3.950%,

3/01/50

3/25

at

101.00

N/R

788,390

7,440

Total

Minnesota

6,928,354

Missouri

-

0.2%

(0.1%

of

Total

Investments)

315

Boone

County,

Missouri,

Hospital

Revenue

Bonds,

Boone

Hospital

Center,

Refunding

Series

2016,

4.000%,

8/01/38

8/26

at

100.00

BBB-

310,899

1,500

Land

Clearance

for

Redevelopment

Authority

of

Kansas

City,

Missouri,

Project

Revenue

Bonds,

Convention

Center

Hotel

Project

-

TIF

Financing,

Series

2018B,

5.000%,

2/01/50,

144A

2/28

at

100.00

N/R

1,253,265

1,815

Total

Missouri

1,564,164

Nevada

-

2.5%

(1.5%

of

Total

Investments)

9,385

Director

of

Nevada

State

Department

of

Business

&

Industry,

Environmental

Improvement

Revenue

Bonds,

Fulcrum

Sierra

BioFuels

LLC

Project,

Green

Series

2018,

6.950%,

2/15/38,

(AMT),

144A

8/28

at

100.00

N/R

8,907,303

2,000

Director

of

Nevada

State

Department

of

Business

&

Industry,

Environmental

Improvement

Revenue

Bonds,

Fulcrum

Sierra

BioFuels

LLC

Project,

Green

Series

2020,

6.750%,

2/15/38,

144A

2/31

at

100.00

N/R

1,841,300

Director

of

Nevada

State

Department

of

Business

&

Industry,

Environmental

Improvement

Revenue

Bonds,

Fulcrum

Sierra

BioFuels

LLC

Project,

Series

2017:

1,964

5.875%,

12/15/27,

(AMT),

144A

No

Opt.

Call

N/R

2,059,771

340

6.250%,

12/15/37,

(AMT),

144A

12/27

at

100.00

N/R

325,101

2,750

Director

of

Nevada

State

Department

of

Business

&

Industry,

Environmental

Improvement

Revenue

Bonds,

Fulcrum

Sierra

Holdings

LLC,

Green

Series

2019,

5.750%,

2/15/38,

(AMT),

144A

8/29

at

100.00

N/R

2,305,985

18,000

Reno,

Nevada,

Subordinate

Lien

Sales

Tax

Revenue

Refunding

Capital

Appreciation

Bonds,

ReTrac-Reno

Transporation

Rail

Access

Corridor

Project,

Series

2018C,

0.010%,

7/01/58,

144A

7/38

at

31.26

N/R

2,459,520

34,439

Total

Nevada

17,898,980

New

Hampshire

-

0.1%

(0.0%

of

Total

Investments)

470

National

Finance

Authority,

New

Hampshire,

Resource

Recovery

Revenue

Bonds,

Covanta

Project,

Refunding

Series

2018C,

4.875%,

11/01/42,

(AMT),

144A

7/23

at

100.00

B1

470,625

New

Jersey

-

4.0%

(2.4%

of

Total

Investments)

4,000

New

Jersey

Economic

Development

Authority

Revenue

Bonds,

Black

Horse

EHT

Urban

Renewal

LLC

Project,

Series

2019A,

5.000%,

10/01/39,

144A

10/27

at

102.00

N/R

3,504,600

1,500

New

Jersey

Economic

Development

Authority,

Fixed

Rate

Revenue

Bonds,

Lions

Gate

Project,

Series

2014,

5.000%,

1/01/34

1/24

at

100.00

N/R

1,499,925

5,475

New

Jersey

Economic

Development

Authority,

Revenue

Bonds,

White

Horse

HMT

Urban

Renewal

LLC

Project,

Series

2020,

5.000%,

1/01/40,

144A

1/28

at

102.00

N/R

4,605,789

7,500

New

Jersey

Economic

Development

Authority,

Special

Facilities

Revenue

Bonds,

Continental

Airlines

Inc.,

Refunding

Series

2012,

5.750%,

9/15/27,

(AMT)

9/22

at

100.00

Ba3

7,519,875

Nuveen

Municipal

Credit

Opportunities

Fund

(continued)

Portfolio

of

Investments

July

31,

2022

(Unaudited)

12

NMCO

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

New

Jersey

(continued)

$

2,500

New

Jersey

Economic

Development

Authority,

Special

Facilities

Revenue

Bonds,

Continental

Airlines

Inc.,

Series

1999,

5.250%,

9/15/29,

(AMT)

8/22

at

101.00

Ba3

$

2,528,175

15,000

New

Jersey

Transportation

Trust

Fund

Authority,

Transportation

System

Bonds,

Series

2009A,

0.000%,

12/15/39,

(UB)

(6)

No

Opt.

Call

Baa1

7,230,000

South

Jersey

Port

Corporation,

New

Jersey,

Marine

Terminal

Revenue

Bonds,

Subordinate

Series

2017B:

1,260

5.000%,

1/01/37,

(AMT)

1/28

at

100.00

Baa1

1,317,242

500

5.000%,

1/01/42,

(AMT)

1/28

at

100.00

Baa1

517,445

37,735

Total

New

Jersey

28,723,051

New

Mexico

-

1.2%

(0.7%

of

Total

Investments)

9,500

New

Mexico

Hospital

Equipment

Loan

Council,

Hospital

Revenue

Bonds,

Presbyterian

Healthcare

Services,

Series

2019A,

3.000%,

8/01/48

8/29

at

100.00

AA

7,893,170

825

Winrock

Town

Center

Tax

Increment

Development

District

1,

Albuquerque,

New

Mexico,

Gross

Receipts

Tax

Increment

Bonds,

Subordinate

Lien

Series

2020,

8.000%,

5/01/40,

144A

11/23

at

103.00

N/R

776,713

10,325

Total

New

Mexico

8,669,883

New

York

-

11.8%

(7.1%

of

Total

Investments)

950

Build

New

York

City

Resource

Corporation,

New

York,

Revenue

Bonds,

Metropolitan

College

of

New

York,

Series

2014,

5.250%,

11/01/34

11/24

at

100.00

BB

967,024

2,910

Build

NYC

Resource

Corporation,

New

York,

Revenue

Bonds,

Family

Life

Academy

Charter

School,

Series

2020A-1,

5.500%,

6/01/55,

144A

12/30

at

100.00

N/R

2,412,012

1,590

Build

NYC

Resource

Corporation,

New

York,

Revenue

Bonds,

Family

Life

Academy

Charter

School,

Series

2020C-1,

5.000%,

6/01/55,

144A

12/30

at

100.00

N/R

1,350,912

450

Dormitory

Authority

of

the

State

of

New

York,

Revenue

Bonds,

Montefiore

Obligated

Group,

Series

2018A,

4.000%,

8/01/38

8/28

at

100.00

BBB-

428,891

36,150

Erie

County

Tobacco

Asset

Securitization

Corporation,

New

York,

Tobacco

Settlement

Asset-Backed

Bonds,

Series

2006A,

0.000%,

6/01/60,

144A

8/22

at

5.88

N/R

2,111,883

650

Hempstead

Town

Local

Development

Corporation,

New

York,

Education

Revenue

Bonds,

The

Academy

Charter

School

Project,

Series

2020A,

5.730%,

2/01/50

2/30

at

100.00

N/R

668,720

1,570

Metropolitan

Transportation

Authority,

New

York,

Transportation

Revenue

Bonds,

Green

Climate

Bond

Certified

Series

2020C-1,

5.250%,

11/15/55

5/30

at

100.00

A3

1,670,904

5,000

Metropolitan

Transportation

Authority,

New

York,

Transportation

Revenue

Bonds,

Series

2014A-1,

5.250%,

11/15/39,

(UB)

(6)

11/23

at

100.00

A3

5,117,600

5,900

New

York

City,

New

York,

General

Obligation

Bonds,

Fiscal

2021

Series

C,

4.000%,

8/01/39,

(UB)

(6)

8/30

at

100.00

AA

5,982,187

14,750

New

York

Liberty

Development

Corporation,

New

York,

Liberty

Revenue

Bonds,

3

World

Trade

Center

Project,

Class

1

Series

2014,

5.000%,

11/15/44,

144A

11/24

at

100.00

N/R

14,851,627

New

York

Liberty

Development

Corporation,

New

York,

Liberty

Revenue

Bonds,

3

World

Trade

Center

Project,

Class

2

Series

2014:

3,235

5.150%,

11/15/34,

144A

11/24

at

100.00

N/R

3,298,988

6,960

5.375%,

11/15/40,

144A

11/24

at

100.00

N/R

7,105,534

New

York

Transportation

Development

Corporation,

New

York,

Special

Facility

Revenue

Bonds,

American

Airlines,

Inc.

John

F

Kennedy

International

Airport

Project,

Refunding

Series

2016:

6,690

5.000%,

8/01/26,

(AMT)

8/22

at

100.00

B

6,740,643

3,000

5.000%,

8/01/31,

(AMT)

8/22

at

100.00

B

3,022,710

13

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

New

York

(continued)

$

875

New

York

Transportation

Development

Corporation,

New

York,

Special

Facility

Revenue

Bonds,

American

Airlines,

Inc.

John

F

Kennedy

International

Airport

Project,

Series

2020,

5.375%,

8/01/36,

(AMT)

8/30

at

100.00

B

$

957,127

New

York

Transportation

Development

Corporation,

Special

Facility

Revenue

Bonds,

Delta

Air

Lines,

Inc.

-

LaGuardia

Airport

Terminals

C&D

Redevelopment

Project,

Series

2020:

2,450

5.000%,

10/01/40,

(AMT)

10/30

at

100.00

Baa3

2,552,949

2,775

4.375%,

10/01/45,

(AMT)

10/30

at

100.00

Baa3

2,729,185

10,000

Suffolk

Tobacco

Asset

Securitization

Corporation,

New

York,

Tobacco

Settlement

Asset-Backed

Bonds,

Series

2021B-2,

0.000%,

6/01/66

6/31

at

27.72

N/R

1,288,500

Syracuse

Industrial

Development

Authority,

New

York,

PILOT

Revenue

Bonds,

Carousel

Center

Project,

Refunding

Series

2016A:

2,950

5.000%,

1/01/32,

(AMT)

1/26

at

100.00

Caa1

2,451,302

3,000

5.000%,

1/01/33,

(AMT)

1/26

at

100.00

Caa1

2,441,790

2,500

5.000%,

1/01/35,

(AMT)

1/26

at

100.00

Caa1

1,978,725

2,775

5.000%,

1/01/36,

(AMT)

1/26

at

100.00

Caa1

2,161,170

12,700

TSASC

Inc.,

New

York,

Tobacco

Asset-Backed

Bonds,

Series

2006,

5.000%,

6/01/48

6/27

at

100.00

N/R

12,709,906

129,830

Total

New

York

85,000,289

Ohio

-

12.5%

(7.6%

of

Total

Investments)

89,235

Buckeye

Tobacco

Settlement

Financing

Authority,

Ohio,

Tobacco

Settlement

Asset-Backed

Revenue

Bonds,

Refunding

Senior

Lien

Capital

Appreciation

Series

2020B-3

Class

2,

0.000%,

6/01/57

6/30

at

22.36

N/R

12,988,154

Buckeye

Tobacco

Settlement

Financing

Authority,

Ohio,

Tobacco

Settlement

Asset-Backed

Revenue

Bonds,

Refunding

Senior

Lien

Series

2020A-2

Class

1:

195

3.000%,

6/01/48

6/30

at

100.00

BBB+

156,995

3,000

4.000%,

6/01/48

6/30

at

100.00

BBB+

2,896,620

24,405

Buckeye

Tobacco

Settlement

Financing

Authority,

Ohio,

Tobacco

Settlement

Asset-Backed

Revenue

Bonds,

Refunding

Senior

Lien

Series

2020B-2

Class

2,

5.000%,

6/01/55

6/30

at

100.00

N/R

24,404,756

410

Butler

County

Port

Authority,

Ohio,

Public

Infrastructure

Revenue

Bonds,

Liberty

Center

Project,

Liberty

Community

Authority,

Series

2014C,

5.000%,

12/01/24,

(Pre-refunded

12/01/22)

12/22

at

100.00

N/R

(8)

414,531

7,610

Cleveland,

Ohio,

Airport

Special

Revenue

Bonds,

Continental

Airlines

Inc.

Project,

Series

1998,

5.375%,

9/15/27,

(AMT)

8/22

at

100.00

Ba3

7,620,502

Evans

Farm

New

Communty

Authority,

Ohio,

Community

Development

Charge

Revenue

Bonds,

Evans

Farm

Mixed-

Use

Project,

Series

2020:

2,170

3.750%,

12/01/38

6/29

at

100.00

N/R

1,882,909

140

4.000%,

12/01/46

6/29

at

100.00

N/R

118,220

5,000

Franklin

County

Convention

Facilities

Authority,

Ohio,

Hotel

Project

Revenue

Bonds,

Greater

Columbus

Convention

Center

Hotel

Expansion

Project,

Series

2019,

5.000%,

12/01/51

12/29

at

100.00

BBB-

5,121,350

930

Hilliard

Hickory

Chase

Community

Authority,

Ohio,

Infustructure

Improvement

Revenue

Bonds,

Hickory

Chase

Project,

Senior

Series

2019A,

5.000%,

12/01/40,

144A

12/29

at

100.00

N/R

895,767

5,020

Ohio

Air

Quality

Development

Authority,

Ohio,

Air

Quality

Development

Revenue

Bonds,

FirstEnergy

Generation

Corporation

Project,

Series

2009A,

5.700%,

8/01/22

No

Opt.

Call

N/R

6,275

Nuveen

Municipal

Credit

Opportunities

Fund

(continued)

Portfolio

of

Investments

July

31,

2022

(Unaudited)

14

NMCO

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Ohio

(continued)

$

14,950

Ohio

Air

Quality

Development

Authority,

Ohio,

Exempt

Facilities

Revenue

Bonds,

AMG

Vanadium

Project,

Series

2019,

5.000%,

7/01/49,

(AMT),

144A

7/29

at

100.00

B-

$

14,796,464

2,085

Ohio

Air

Quality

Development

Authority,

Ohio,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Generation

Corporation

Project,

Refunding

Series

2009B,

3.100%,

3/01/23

No

Opt.

Call

N/R

2,606

4,140

Ohio

Air

Quality

Development

Authority,

Ohio,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Generation

Project,

Refunding

Series

2006A,

3.750%,

12/01/23

(4)

No

Opt.

Call

N/R

5,175

16,350

Ohio

Air

Quality

Development

Authority,

Ohio,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Nuclear

Generation

Project,

Refunding

Series

2009A,

4.750%,

6/01/33,

(Mandatory

Put

6/01/22)

No

Opt.

Call

N/R

16,417,689

2,470

Ohio

Water

Development

Authority,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Generating

Corporation

Project,

Refunding

Series

2006A,

3.000%,

5/15/49

(4)

No

Opt.

Call

N/R

3,087

2,000

Ohio

Water

Development

Authority,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Nuclear

Generating

Corporation

Project,

Refunding

Series

2010C,

4.000%,

6/01/33

No

Opt.

Call

N/R

2,500

2,510

Ohio

Water

Development

Authority,

Pollution

Control

Revenue

Refunding

Bonds,

FirstEnergy

Nuclear

Generating

Corporation

Project,

Series

2006B,

4.000%,

12/01/33

(4)

No

Opt.

Call

N/R

3,137

1,000

Port

of

Greater

Cincinnati

Development

Authority,

Ohio,

Special

Obligation

Tax

Increment

Financing

Revenue

Bonds,

Cooperative

Township

Public

Parking

Project,

Gallery

at

Kenwood,

Senior

Lien

Series

2019A,

5.000%,

11/01/51

11/30

at

100.00

N/R

840,510

1,000

Southern

Ohio

Port

Authority,

Ohio,

Facility

Revenue

Bonds,

Purecycle

Project,

Series

2020A,

7.000%,

12/01/42,

(AMT),

144A

12/27

at

103.00

N/R

901,130

1,000

Southern

Ohio

Port

Authority,

Ohio,

Facility

Revenue

Bonds,

Purecycle

Project,

Series

2020B,

10.000%,

12/01/27,

(AMT),

144A

12/26

at

105.00

N/R

1,012,440

185,620

Total

Ohio

90,490,817

Oklahoma

-

1.0%

(0.6%

of

Total

Investments)

2,475

Tulsa

Municipal

Airport

Trust,

Oklahoma,

Revenue

Bonds,

American

Airlines

Inc.,

Refunding

Series

2000B,

5.500%,

6/01/35,

(AMT)

6/23

at

100.00

N/R

2,514,006

860

Tulsa

Municipal

Airport

Trust,

Oklahoma,

Revenue

Bonds,

American

Airlines

Inc.,

Refunding

Series

2001B,

5.500%,

12/01/35,

(AMT)

6/23

at

100.00

N/R

873,553

3,475

Tulsa

Municipal

Airport

Trust,

Oklahoma,

Revenue

Bonds,

American

Airlines

Inc.,

Refunding

Series

2015,

5.000%,

6/01/35,

(AMT),

(Mandatory

Put

6/01/25)

6/25

at

100.00

B-

3,612,506

6,810

Total

Oklahoma

7,000,065

Oregon

-

0.1%

(0.1%

of

Total

Investments)

100

Oregon

Facilities

Authority,

Revenue

Bonds,

Metro

East

Web

Academy

Project,

Series

2019A,

5.000%,

6/15/49,

144A

6/27

at

102.00

N/R

93,283

1,000

Yamhill

County

Hospital

Authority,

Oregon,

Revenue

Bonds,

Friendsview

Retirement

Community,

Refunding

Series

2021A,

5.000%,

11/15/56

11/28

at

103.00

N/R

878,720

1,100

Total

Oregon

972,003

Pennsylvania

-

6.8%

(4.1%

of

Total

Investments)

1,125

Allegheny

Country

Industrial

Development

Authority,

Pennsylvania,

Environmental

Improvement

Revenue

Bonds,

United

States

Steel

Corporation

Project,

Series

2012,

5.750%,

8/01/42,

(AMT)

8/22

at

100.00

B

1,125,337

15

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Pennsylvania

(continued)

Allegheny

County

Industrial

Development

Authority,

Pennsylvania,

Environmental

Improvement

Revenue

Bonds,

United

States

Steel

Corp.,

Refunding

Series

2019:

$

5,970

4.875%,

11/01/24

No

Opt.

Call

B

$

6,105,340

6,995

5.125%,

5/01/30

No

Opt.

Call

B

7,428,620

345

Allentown

Neighborhood

Improvement

Zone

Development

Authority,

Pennsylvania,

Tax

Revenue

Bonds,

615

Waterfront

Project,

Senior

Series

2021,

6.000%,

5/01/42,

144A

5/31

at

100.00

N/R

373,311

Beaver

County

Industrial

Development

Authority,

Pennsylvania,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Generation

Project,

Refunding

Series

2006A:

3,300

4.375%,

1/01/35,

(Mandatory

Put

7/01/22)

No

Opt.

Call

N/R

3,318,348

560

3.500%,

4/01/41

(4)

No

Opt.

Call

N/R

700

1,440

Beaver

County

Industrial

Development

Authority,

Pennsylvania,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Nuclear

Generation

Project,

Refunding

Series

2005A,

4.000%,

1/01/35

(4)

No

Opt.

Call

N/R

1,800

1,025

Beaver

County

Industrial

Development

Authority,

Pennsylvania,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Nuclear

Generation

Project,

Refunding

Series

2008A,

2.700%,

4/01/35

(4)

No

Opt.

Call

N/R

1,281

5,355

Beaver

County

Industrial

Development

Authority,

Pennsylvania,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Nuclear

Generation

Project,

Series

2006B,

3.500%,

12/01/35

(4)

No

Opt.

Call

N/R

6,694

1,555

Beaver

County

Industrial

Development

Authority,

Pennsylvania,

Pollution

Control

Revenue

Refunding

Bonds,

FirstEnergy

Generation

Project,

Series

2008B,

3.750%,

10/01/47

4/31

at

100.00

N/R

1,297,165

2,565

Berks

County

Municipal

Authority,

Pennsylvania,

Revenue

Bonds,  Alvernia

University

Project,

Series

2020,

5.000%,

10/01/49

10/29

at

100.00

BB+

2,501,542

3,100

Berks

County

Municipal

Authority,

Pennsylvania,

Revenue

Bonds,

Reading

Hospital

&

Medical

Center

Project,

Series

2012A,

5.000%,

11/01/44

8/22

at

100.00

BB-

2,402,717

1,000

Chester

County

Health

and

Education

Facilities

Authority,

Pennsylvania,

Revenue

Bonds,

Simpson

Senior

Services

Project,

Series

2015A,

5.000%,

12/01/30

12/25

at

100.00

N/R

1,010,000

Chester

County

Industrial

Development

Authority,

Pennsylvania,

Revenue

Bonds,

Collegium

Chater

School

Project,

Series

2017A:

1,870

5.125%,

10/15/37

4/27

at

100.00

BB

1,922,902

3,250

5.250%,

10/15/47

4/27

at

100.00

BB

3,312,043

Cumberland

County

Municipal

Authority,

Pennsylvania,

Revenue

Bonds,

Asbury

Pennsylvania

Obligated

Group,  Refunding

Series

2019:

2,160

5.000%,

1/01/39

1/25

at

104.00

N/R

2,196,612

1,240

5.000%,

1/01/45

1/25

at

104.00

N/R

1,250,094

3,555

Dauphin

County

General

Authority,

Pennsylvania,

Revenue

Bonds,

Harrisburg

University

of

Science

&

Technology

Project,

Series

2020,

6.250%,

10/15/53,

144A

10/28

at

100.00

BB

3,850,172

1,720

Pennsylvania

Economic

Development

Financing

Authority,

Exempt

Facilities

Revenue

Bonds,

KDC

Agribusiness

Fairless

Hills

LLC

Project,

Series

2020A-1,

10.000%,

12/01/40,

144A

6/30

at

100.00

N/R

1,639,452

1,720

Pennsylvania

Economic

Development

Financing

Authority,

Exempt

Facilities

Revenue

Bonds,

KDC

Agribusiness

Fairless

Hills

LLC

Project,

Series

2020A-2,

10.000%,

12/01/40,

(AMT),

144A

6/30

at

100.00

N/R

1,639,452

1,270

Pennsylvania

Economic

Development

Financing

Authority,

Exempt

Facilities

Revenue

Bonds,

KDC

Agribusiness

Fairless

Hills

LLC

Project,

Series

2021A,

10.000%,

12/01/31

No

Opt.

Call

N/R

1,167,841

Nuveen

Municipal

Credit

Opportunities

Fund

(continued)

Portfolio

of

Investments

July

31,

2022

(Unaudited)

16

NMCO

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Pennsylvania

(continued)

$

7,950

Pennsylvania

Economic

Development

Financing

Authority,

Exempt

Facilities

Revenue

Refunding

Bonds,

PPL

Energy

Supply,

LLC

Project,

Series

2009A,

6.400%,

12/01/38

(4)

9/25

at

100.00

Caa1

$

4,929,000

1,025

Pennsylvania

Higher

Educational

Facilities

Authority,

Revenue

Bonds,

University

of

the

Sciences

in

Philadelphia,

Series

2015A,

5.000%,

11/01/27

11/25

at

100.00

Baa1

1,097,878

545

Philadelphia

Authority

for

Industrial

Development,

Pennsylvania,

Revenue

Bonds,

Mariana

Bracetti

Academy

Project,

Series

2020A,

5.375%,

6/15/50,

144A

12/27

at

100.00

N/R

516,377

60,640

Total

Pennsylvania

49,094,678

Puerto

Rico

-

15.5%

(9.4%

of

Total

Investments)

Puerto

Rico

Electric

Power

Authority,

Power

Revenue

Bonds,

Refunding

Series

2012A:

2,070

3.957%,

7/01/29

(4)

8/22

at

100.00

N/R

1,697,400

3,170

3.957%,

7/01/42

(4)

8/22

at

100.00

D

2,599,400

1,000

3.961%,

7/01/42

(4)

8/22

at

100.00

D

820,000

Puerto

Rico

Electric

Power

Authority,

Power

Revenue

Bonds,

Series

2007TT:

130

3.957%,

7/01/21

(4)

No

Opt.

Call

N/R

106,275

3,750

3.957%,

7/01/26

(4)

8/22

at

100.00

N/R

3,075,000

310

3.957%,

7/01/32

(4)

8/22

at

100.00

D

254,200

1,860

3.957%,

7/01/37

(4)

8/22

at

100.00

D

1,525,200

1,750

Puerto

Rico

Electric

Power

Authority,

Power

Revenue

Bonds,

Series

2007VV,

5.250%,

7/01/32

-

NPFG

Insured

No

Opt.

Call

Baa2

1,787,083

Puerto

Rico

Electric

Power

Authority,

Power

Revenue

Bonds,

Series

2010AAA:

1,124

3.978%,

7/01/28

(4)

8/22

at

100.00

Ca

921,680

468

3.978%,

7/01/29

(4)

8/22

at

100.00

N/R

383,760

346

3.978%,

7/01/31

(4)

8/22

at

100.00

Ca

283,720

Puerto

Rico

Electric

Power

Authority,

Power

Revenue

Bonds,

Series

2010CCC:

2,995

3.957%,

7/01/28

(4)

8/22

at

100.00

Ca

2,455,900

500

3.978%,

7/01/28

(4)

8/22

at

100.00

Ca

410,000

Puerto

Rico

Electric

Power

Authority,

Power

Revenue

Bonds,

Series

2010XX:

100

3.978%,

7/01/27

(4)

8/22

at

100.00

D

82,000

4,000

3.978%,

7/01/35

(4)

8/22

at

100.00

D

3,280,000

400

Puerto

Rico

Electric

Power

Authority,

Power

Revenue

Bonds,

Series

2010ZZ,

3.978%,

7/01/24

(4)

8/22

at

100.00

Ca

328,000

Puerto

Rico

Electric

Power

Authority,

Power

Revenue

Bonds,

Series

2013A:

5,000

4.123%,

7/01/33

(4)

7/23

at

100.00

Ca

4,275,000

10,000

4.102%,

7/01/36

(4)

7/23

at

100.00

D

8,525,000

1,000

Puerto

Rico

Electric

Power

Authority,

Power

Revenue

Bonds,

Series

2016A-4-RSA-1,

4.371%,

7/01/19

(4)

No

Opt.

Call

N/R

877,500

Puerto

Rico

Electric

Power

Authority,

Power

Revenue

Bonds,

Series

WW:

190

3.988%,

7/01/23

(4)

No

Opt.

Call

N/R

156,038

373

3.988%,

7/01/23

(4)

8/22

at

100.00

Ca

306,326

25

3.978%,

7/01/33

(4)

8/22

at

100.00

Ca

20,500

2,525

Puerto

Rico

Highway

and

Transportation

Authority,

Highway

Revenue

Bonds,

Series

2005L,

5.250%,

7/01/35

-

NPFG

Insured

No

Opt.

Call

Baa2

2,564,920

3,000

Puerto

Rico

Highway

and

Transportation

Authority,

Highway

Revenue

Bonds,

Series

2007N,

5.250%,

7/01/36

-

AGC

Insured

No

Opt.

Call

AA

3,065,700

17

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Puerto

Rico

(continued)

Puerto

Rico

Sales

Tax

Financing

Corporation,

Sales

Tax

Revenue

Bonds,

Restructured

2018A-1:

$

45,702

0.000%,

7/01/46

7/28

at

41.38

N/R

$

13,321,233

0

(9)

0.000%,

7/01/51

7/28

at

30.01

N/R

73

1,750

5.000%,

7/01/58

7/28

at

100.00

N/R

1,769,626

3,000

Puerto

Rico

Sales

Tax

Financing

Corporation,

Sales

Tax

Revenue

Bonds,

Taxable

Restructured

Cofina

Project

Series

2019A-2,

4.329%,

7/01/40

7/28

at

100.00

N/R

2,977,530

Puerto

Rico,

General

Obligation

Bonds,

Restructured

Series

2022A-1:

1,186

5.250%,

7/01/23

No

Opt.

Call

N/R

1,209,945

2,365

5.375%,

7/01/25

No

Opt.

Call

N/R

2,478,956

2,344

5.625%,

7/01/27

No

Opt.

Call

N/R

2,542,545

4,740

5.750%,

7/01/31

No

Opt.

Call

N/R

5,329,672

18,533

0.010%,

7/01/33

7/31

at

89.94

N/R

11,044,943

2,124

4.000%,

7/01/33

7/31

at

103.00

N/R

2,038,179

1,909

4.000%,

7/01/35

7/31

at

103.00

N/R

1,807,197

5,638

4.000%,

7/01/37

7/31

at

103.00

N/R

5,281,751

10,182

4.000%,

7/01/41

7/31

at

103.00

N/R

9,379,570

4,912

4.000%,

7/01/46

7/31

at

103.00

N/R

4,440,416

14,717

Puerto

Rico,

General

Obligation

Bonds,

Vintage

CW

NT

Claims

Taxable

Series

2022,

0.000%,

11/01/43

No

Opt.

Call

N/R

7,873,409

500

University

of

Puerto

Rico,

University

System

Revenue

Bonds,

Series

2006Q,

5.000%,

6/01/24

8/22

at

100.00

CC

496,335

165,688

Total

Puerto

Rico

111,791,982

South

Carolina

-

0.1%

(0.1%

of

Total

Investments)

430

Berkeley

County,

South

Carolina,

Special

Assessment

Revenue

Bonds,

Nexton

Improvement

District,

Series

2019,

4.375%,

11/01/49

11/29

at

100.00

N/R

430,636

400

South

Carolina

Jobs-Economic

Development

Authority,

Economic

Development

Revenue

Bonds,

Hilton

Head

Christian

Academy,

Series

2020,

5.000%,

1/01/55,

144A

1/30

at

100.00

N/R

357,720

830

Total

South

Carolina

788,356

Tennessee

-

1.1%

(0.6%

of

Total

Investments)

1,000

Bristol

Industrial

Development

Board,

Tennessee,

State

Sales

Tax

Revenue

Bonds,

Pinnacle

Project,

Capital

Appreciation

Series

2016B,

0.010%,

12/01/31,

144A

No

Opt.

Call

N/R

624,030

5,000

Bristol

Industrial

Development

Board,

Tennessee,

State

Sales

Tax

Revenue

Bonds,

Pinnacle

Project,

Series

2016A,

5.125%,

12/01/42,

144A

12/26

at

100.00

N/R

5,012,100

2,000

Knox

County

Health,

Educational,

and

Housing

Facilities

Board,

Tennessee,

Revenue

Bonds,

Provision

Center

for

Proton

Therapy

Project,

Series

2014,

5.250%,

5/01/25,

144A

(4)

11/24

at

100.00

N/R

940,000

1,000

Memphis/Shelby

County

Economic

Development

Growth

Engine

Industrial

Development

Board,

Tennessee,

Tax

Increment

Revenue

Bonds,

Graceland

Project,

Senior

Series

2017A,

5.625%,

1/01/46

7/27

at

100.00

N/R

777,380

1,500

The

Health

and

Educational

Facilities

Board

of

the

City

of

Franklin,

Tennessee,

Revenue

Bonds,

Provision

Cares

Proton

Therapy

Center,

Nashville

Project,

Series

2017A,

6.500%,

6/01/27,

144A

(4)

No

Opt.

Call

N/R

405,000

10,500

Total

Tennessee

7,758,510

Texas

-

3.2%

(1.9%

of

Total

Investments)

Austin

Convention

Enterprises

Inc.,

Texas,

Convention

Center

Hotel

Revenue

Bonds,

Refunding

First

Tier

Series

2017A:

500

5.000%,

1/01/31

1/27

at

100.00

BB+

526,405

500

5.000%,

1/01/32

1/27

at

100.00

BB+

525,515

Nuveen

Municipal

Credit

Opportunities

Fund

(continued)

Portfolio

of

Investments

July

31,

2022

(Unaudited)

18

NMCO

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Texas

(continued)

Austin

Convention

Enterprises

Inc.,

Texas,

Convention

Center

Hotel

Revenue

Bonds,

Refunding

Second

Tier

Series

2017B:

$

540

5.000%,

1/01/25

No

Opt.

Call

B

$

551,632

475

5.000%,

1/01/29

1/27

at

100.00

B

485,559

850

5.000%,

1/01/34

1/27

at

100.00

B

854,369

4,665

Houston,

Texas,

Airport

System

Special

Facilities

Revenue

Bonds,

Continental

Airlines

Inc.

-

Terminal

Improvement

Project,

Refunding

Series

2011,

6.500%,

7/15/30,

(AMT)

8/22

at

100.00

Ba3

4,689,305

650

Houston,

Texas,

Airport

System

Special

Facilities

Revenue

Bonds,

United

Airlines,

Inc.

Terminal

E

Project,

Refunding

Series

2014,

5.000%,

7/01/29,

(AMT)

7/24

at

100.00

Ba3

662,831

250

Leander,

Texas,

Special

Assessment

Revenue

Bonds,

Deerbrooke

Public

Improvement

District

Southern

Improvement

Area

Project,

Series

2017,

4.750%,

9/01/37,

144A

9/26

at

100.00

N/R

240,097

200

Manor,

Texas,

Special

Assessment

Revenue

Bonds,

Lagos

Public

Improvement

District

Major

Improvement

Area

Project,

Series

2020,

4.625%,

9/15/49,

144A

9/30

at

100.00

N/R

191,496

520

New

Hope

Cultural

Education

Facilities

Finance

Corporation,

Texas,

Education

Revenue

Bonds,

Beta

Academy,

Series

2019A,

5.000%,

8/15/49,

144A

8/24

at

100.00

N/R

521,082

70

New

Hope

Cultural

Education

Facilities

Finance

Corporation,

Texas,

Retirement

Facility

Revenue

Bonds,

Buckingham

Senior

Living

Community,

Inc.

Project,

Series

2021A-1,

7.500%,

11/15/37

No

Opt.

Call

N/R

61,522

445

New

Hope

Cultural

Education

Facilities

Finance

Corporation,

Texas,

Retirement

Facility

Revenue

Bonds,

Buckingham

Senior

Living

Community,

Inc.

Project,

Series

2021A-2,

7.500%,

11/15/36

No

Opt.

Call

N/R

403,410

3,930

New

Hope

Cultural

Education

Facilities

Finance

Corporation,

Texas,

Retirement

Facility

Revenue

Bonds,

Buckingham

Senior

Living

Community,

Inc.

Project,

Series

2021B,

5.625%,

11/15/61

11/26

at

105.00

N/R

2,249,689

6,850

New

Hope

Cultural

Education

Facilities

Finance

Corporation,

Texas,

Senior

Living

Revenue

Bonds,

Sanctuary

LTC

LLC

Project,

Series

2021A-1,

5.500%,

1/01/57

1/28

at

103.00

N/R

6,297,685

625

New

Hope

Cultural

Education

Facilities

Finance

Corporation,

Texas,

Student

Housing

Revenue

Bonds,

CHF-Collegiate

Housing

Corpus

Christi

II,

L.L.C.-Texas

A&M

University-Corpus

Christi

Project,

Series

2016A,

5.000%,

4/01/48,

(Pre-refunded

4/01/26)

4/26

at

100.00

N/R

(8)

692,812

400

New

Hope

Cultural

Education

Facilities

Finance

Corporation,

Texas,

Student

Housing

Revenue

Bonds,

CHF-Collegiate

Housing

Galveston-

Texas

A&M

University

at

Galveston

Project,

Series

2014A,

5.000%,

4/01/29,

(Pre-refunded

4/01/24)

4/24

at

100.00

N/R

(8)

420,888

110

North

Richland

Hills,

Texas,

Special

Assessment

Revenue

Bonds,

City

Point

Public

Improvement

District

Zone

B

Project,

Series

2019,

5.375%,

9/01/50,

144A

9/30

at

100.00

N/R

109,206

145

Royse

CIty,

Rockwall

County,

Texas,

Special

Assessment

Revenue

Bonds,

Waterscape

Public

improvement

District

Improvement

Area

2

Project,

Series

2019,

4.750%,

9/15/49,

144A

9/27

at

100.00

N/R

145,441

Tarrant

County

Cultural

Education

Facilities

Finance

Corporaton,

Texas,

Retirement

Facility

Revenue

Bonds,

C.C.

Young

Memorial

Home

Project,

Series

2016A:

1,000

0.000%,

2/15/41

(4)

2/27

at

100.00

N/R

650,000

4,575

0.000%,

2/15/48

(4)

2/27

at

100.00

N/R

2,973,750

27,300

Total

Texas

23,252,694

19

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Utah

-

0.3%

(0.2%

of

Total

Investments)

$

2,000

Military

Installation

Development

Authority,

Tax

Allocation

Revenue

Bonds,

Series

2021A-2,

4.000%,

6/01/52

9/26

at

103.00

N/R

$

1,552,820

1,000

Utah

Charter

School

Finance

Authority,

Charter

School

Revenue

Bonds,

Leadership

Learning

Academy

Project,

Series

2019A,

5.000%,

6/15/50,

144A

6/27

at

102.00

N/R

969,240

3,000

Total

Utah

2,522,060

Virgin

Islands

-

3.0%

(1.8%

of

Total

Investments)

1,585

Matching

Fund

Special

Purpose

Securitization

Corporation,

Virgin

Islands,

Revenue

Bonds,

Series

2022A,

5.000%,

10/01/39

10/32

at

100.00

N/R

1,679,545

710

Virgin

Islands

Public

Finance

Authority,

Gross

Receipts

Taxes

Loan

Note,

Refunding

Series

2012A,

5.000%,

10/01/32

10/22

at

100.00

N/R

691,072

16,000

Virgin

Islands

Public

Finance

Authority,

Gross

Receipts

Taxes

Loan

Note,

Refunding

Series

2014C,

5.000%,

10/01/30,

144A

10/24

at

100.00

N/R

15,707,840

435

Virgin

Islands

Public

Finance

Authority,

Gross

Receipts

Taxes

Loan

Note,

Working

Capital

Series

2014A,

5.000%,

10/01/24,

144A

No

Opt.

Call

N/R

435,335

2,000

Virgin

Islands

Water

and

Power

Authority,

Electric

System

Revenue

Bonds,

Bond

Anticipation

Notes,

Senior

Series

2021A,

6.750%,

7/01/26,

144A

No

Opt.

Call

N/R

1,958,720

1,400

West

Indian

Company

Limited,

Virgin

Island,

Port

Facilities

Revenue

Bonds,

WICO

Financing,

Series

2022A,

6.375%,

4/01/52,

144A

10/29

at

104.00

N/R

1,400,336

22,130

Total

Virgin

Islands

21,872,848

Virginia

-

1.2%

(0.7%

of

Total

Investments)

Roanoke

Economic

Development

Authority,

Virginia

Residential

Care

Facility

Revenue

Bonds,

Richfield

Living,

Series

2020:

5,870

5.000%,

9/01/50

(4)

9/27

at

103.00

N/R

4,305,528

4,840

5.125%,

9/01/55

(4)

9/27

at

103.00

N/R

3,541,476

538

Virginia

Small

Business

Finance

Authority,

Educational

Facilities

Revenue

Bonds,

Provident

Resource

Group

-

Rixey

Student

Housing

Project,

Series

2019B,

6.525%,

7/01/52,

144A

(cash

6.525%,

PIK

7.500%)

No

Opt.

Call

N/R

534,974

11,248

Total

Virginia

8,381,978

Washington

-

0.3%

(0.2%

of

Total

Investments)

1,125

Port

of

Seattle

Industrial

Development

Corporation,

Washington,

Special

Facilities

Revenue

Refunding

Bonds,

Delta

Air

Lines,

Inc.

Project,

Series

2012,

5.000%,

4/01/30,

(AMT)

4/23

at

100.00

BB+

1,134,889

1,000

Washington

State

Housing

Finance

Commission,

Nonprofit

Housing

Revenue

Bonds,

Rockwood

Retirement

Communities

Project,

Series

2020A,

5.000%,

1/01/51,

144A

1/26

at

103.00

N/R

851,130

2,125

Total

Washington

1,986,019

West

Virginia

-

0.7%

(0.4%

of

Total

Investments)

Monongalia

County

Commission,

West

Virginia,

Special

District

Excise

Tax

Revenue

Bonds,

University

Town

Centre

Economic

Opportunity

Development

District,

Refunding

&

Improvement

Series

2017A:

3,000

5.500%,

6/01/37,

144A

6/27

at

100.00

N/R

3,112,920

625

5.750%,

6/01/43,

144A

6/27

at

100.00

N/R

649,731

1,000

West

Virginia

Economic

Development

Authority,

Solid

Waste

Disposal

Facilities

Revenue

Bonds,

Arch

Resources

Project,

Series

2021,

4.125%,

7/01/45,

(AMT),

(Mandatory

Put

7/01/25)

1/25

at

100.00

B

1,003,270

4,625

Total

West

Virginia

4,765,921

Nuveen

Municipal

Credit

Opportunities

Fund

(continued)

Portfolio

of

Investments

July

31,

2022

(Unaudited)

20

NMCO

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Wisconsin

-

9.9%

(6.0%

of

Total

Investments)

Public

Finance

Authority

of

Wisconsin,

Charter

School

Revenue

Bonds,

21st

Century

Public

Academy

Project,

Series

2020A:

$

750

5.000%,

6/01/40,

144A

6/28

at

102.00

N/R

$

715,042

1,340

5.000%,

6/01/49,

144A

6/28

at

102.00

N/R

1,215,166

365

Public

Finance

Authority

of

Wisconsin,

Charter

School

Revenue

Bonds,

Corvian

Community

School

Bonds,

North

Carolina,

Series

2019A,

5.000%,

6/15/49,

144A

6/26

at

100.00

N/R

348,878

Public

Finance

Authority

of

Wisconsin,

Charter

School

Revenue

Bonds,

North

Carolina

Charter

Educational

Foundation

Project,

Series

2016A:

3,000

5.000%,

6/15/36,

144A

6/26

at

100.00

N/R

2,691,300

4,240

5.000%,

6/15/46,

144A

6/26

at

100.00

N/R

3,527,383

3,315

Public

Finance

Authority

of

Wisconsin,

Charter

School

Revenue

Bonds,

Uwharrie

Charter

Academy,

North

Carolina,

Series

2022A,

5.000%,

6/15/52,

144A

6/32

at

100.00

N/R

3,264,214

2,000

Public

Finance

Authority

of

Wisconsin,

Educational

Facilities

Revenue

Bonds,

Lake

Erie

College,

Series

2019A,

5.875%,

10/01/54,

144A

10/29

at

100.00

N/R

1,775,920

Public

Finance

Authority

of

Wisconsin,

Limited

Obligation

Grant

Revenue

Bonds,

American

Dream

@

Meadowlands

Project,

Series

2017A:

13,695

3.125%,

8/01/27,

144A

(4)

No

Opt.

Call

N/R

12,632,131

2,375

6.750%,

8/01/31,

144A

(4)

No

Opt.

Call

N/R

2,003,336

Public

Finance

Authority

of

Wisconsin,

Limited

Obligation

PILOT

Revenue

Bonds,

American

Dream

@

Meadowlands

Project,

Series

2017:

555

6.500%,

12/01/37,

144A

12/27

at

100.00

N/R

513,403

15,915

7.000%,

12/01/50,

144A

12/27

at

100.00

N/R

15,003,548

215

Public

Finance

Authority

of

Wisconsin,

Retirement

Facility

Revenue

Bonds,

Shalom

Park

Development

Project,

Series

2019,

0.000%,

12/31/24,

144A

No

Opt.

Call

N/R

156,991

1,000

Public

Finance

Authority

of

Wisconsin,

Revenue

Bonds,

Alabama

Proton

Therapy

Center,

Senior

Series

2017B,

8.500%,

10/01/47,

144A

(4)

10/27

at

100.00

N/R

652,500

Public

Finance

Authority

of

Wisconsin,

Revenue

Bonds,

Prime

Healthcare

Foundation,

Inc.,

Series

2017A:

225

5.000%,

12/01/27

No

Opt.

Call

BBB-

236,853

1,765

5.200%,

12/01/37

12/27

at

100.00

BBB-

1,885,850

2,000

Public

Finance

Authority

of

Wisconsin,

Revenue

Bonds,

Procure

Proton

Therapy

Center,

Senior

Series

2018A,

7.000%,

7/01/48,

144A

7/28

at

100.00

N/R

1,714,860

635

Public

Finance

Authority

of

Wisconsin,

Revenue

Bonds,

Roseman

University

of

Health

Sciences,

Series

2020,

5.000%,

4/01/50,

144A

4/30

at

100.00

BB

649,561

8,930

Public

Finance

Authority

of

Wisconsin,

Revenue

Bonds,

Sky

Harbour

LLC

Obligated

Group

Aviation

Facilities

Project,

Series

2021,

4.250%,

7/01/54,

(AMT)

7/31

at

100.00

N/R

6,898,157

Public

Finance

Authority

of

Wisconsin,

Senior

Revenue

Bonds,

Maryland

Proton

Treatment

Center,

Series

2018A-1:

5,885

6.125%,

1/01/33,

144A

1/28

at

100.00

N/R

3,619,275

250

6.250%,

1/01/38,

144A

1/28

at

100.00

N/R

153,750

8,735

6.375%,

1/01/48,

144A

1/28

at

100.00

N/R

5,372,025

Wisconsin

Center

District,

Dedicated

Tax

Revenue

Bonds,

Supported

by

State

Moral

Obligation

Junior

Series

2020D:

6,225

0.000%,

12/15/45

-

AGM

Insured

12/30

at

56.77

AA

2,371,787

4,500

0.000%,

12/15/60

-

AGM

Insured

12/30

at

29.95

AA

850,905

21

Part

F

of

Form

N-PORT

was

prepared

in

accordance

with

U.S.

generally

accepted

accounting

principles

(“U.S.

GAAP”)

and

in

conformity

with

the

applicable

rules

and

regulations

of

the

U.S.

Securities

and

Exchange

Commission

(“SEC”)

related

to

interim

filings.

Part

F

of

Form

N-PORT

does

not

include

all

information

and

footnotes

required

by

U.S.

GAAP

for

complete

financial

statements.

Certain

footnote

disclosures

normally

included

in

financial

statements

prepared

in

accordance

with

U.S.

GAAP

have

been

condensed

or

omitted

from

this

report

pursuant

to

the

rules

of

the

SEC.

For

a

full

set

of

the

Fund’s

notes

to

financial

statements,

please

refer

to

the

Fund’s

most

recently

filed

annual

or

semi-annual

report.

Fair

Value

Measurements

The

Fund’s

investments

in

securities

are

recorded

at

their

estimated

fair

value

utilizing

valuation

methods

approved

by

the

Board

of

Directors/

Trustees.

Fair

value

is

defined

as

the

price

that

would

be

received

upon

selling

an

investment

or

transferring

a

liability

in

an

orderly

transaction

to

an

independent

buyer

in

the

principal

or

most

advantageous

market

for

the

investment.

U.S.

GAAP

establishes

the

three-tier

hierarchy

which

is

used

to

maximize

the

use

of

observable

market

data

and

minimize

the

use

of

unobservable

inputs

and

to

establish

classification

of

fair

value

measurements

for

disclosure

purposes.

Observable

inputs

reflect

the

assumptions

market

participants

would

use

in

pricing

the

asset

or

liability.

Observable

inputs

are

based

on

market

data

obtained

from

sources

independent

of

the

reporting

entity.

Unobservable

inputs

reflect

management’s

assumptions

about

the

assumptions

market

participants

would

use

in

pricing

the

asset

or

liability.

Unobservable

inputs

are

based

on

the

best

information

available

in

the

circumstances.

The

following

is

a

summary

of

the

three-tiered

hierarchy

of

valuation

input

levels.

Level

1

–

Inputs

are

unadjusted

and

prices

are

determined

using

quoted

prices

in

active

markets

for

identical

securities.

Level

2

–

Prices

are

determined

using

other

significant

observable

inputs

(including

quoted

prices

for

similar

securities,

interest

rates,

credit

spreads,

etc.).

Level

3

–

Prices

are

determined

using

significant

unobservable

inputs

(including

management’s

assumptions

in

determining

the

fair

value

of

investments).

The

following

table

summarizes

the

market

value

of

the

Fund's

investments

as

of

the

end

of

the

reporting

period,

based

on

the

inputs

used

to

value

them:

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Wisconsin

(continued)

$

3,000

Wisconsin

Health

and

Educational

Facilities

Authority,

Wisconsin,

Revenue

Bonds,

Saint

Camillus

Health

System

Inc,

Series

2019A,

5.000%,

11/01/54

11/26

at

103.00

N/R

$

2,924,730

90,915

Total

Wisconsin

71,177,565

$

1,680,901

Total

Municipal

Bonds

(cost

$1,181,990,380)

1,132,041,724

Shares

Description

(1)

Value

X

59,192,886

COMMON

STOCKS

-

8.2%

(5.0%

of

Total

Investments)

X

59,192,886

Independent

Power

and

Renewable

Electricity

Producers

-

8.2%

(5.0%

of

Total

Investments)

859,113

Energy

Harbor

Corp

(10),(11),(12)

$

59,192,886

Total

Common

Stocks

(cost

$24,407,228)

59,192,886

Shares

Description

(1)

Value

1,764,320

EXCHANGE-TRADED

FUNDS

-

0.3%

(0.1%

of

Total

Investments)

X

1,764,320

32,000

VanEck

High

Yield

Muni

Exchange

Traded

Fund

$

1,764,320

Total

Exchange-Traded

Funds

(cost

$2,058,659)

1,764,320

Total

Long-Term

Investments

(cost

$1,208,456,267)

1,192,998,930

Floating

Rate

Obligations

-

(4.6)%

(

33,436,000

)

MuniFund

Preferred

Shares,

net

of

deferred

offering

costs

-

(62.2)%(13)

(

448,990,553

)

Other

Assets

Less

Liabilities

-  1.5%

11,269,791

Net

Assets

Applicable

to

Common

Shares

-

100%

$

721,842,168

Level

1

Level

2

Level

3

Total

Long-Term

Investments:

Municipal

Bonds

$

–

$

1,131,751,268

$

290,456

$

1,132,041,724

Common

Stocks

–

59,192,886

–

59,192,886

Exchange-Traded

Funds

1,764,320

–

–

1,764,320

Total

$

1,764,320

$

1,190,944,154

$

290,456

$

1,192,998,930

Nuveen

Municipal

Credit

Opportunities

Fund

(continued)

Portfolio

of

Investments

July

31,

2022

(Unaudited)

22

NMCO

(1)

All

percentages

shown

in

the

Portfolio

of

Investments

are

based

on

net

assets

applicable

to

common

shares

unless

otherwise

noted.

(2)

Optional

Call

Provisions:

Dates

(month

and

year)

and

prices

of

the

earliest

optional

call

or

redemption.

There

may

be

other

call

provisions

at

varying

prices

at

later

dates.

Certain

mortgage-backed

securities

may

be

subject

to

periodic

principal

paydowns.

(3)

For

financial

reporting

purposes,

the

ratings

disclosed

are

the

highest

of

Standard

&

Poor’s

Group

(“Standard

&

Poor’s”),

Moody’s

Investors

Service,

Inc.

(“Moody’s”)

or

Fitch,

Inc.

(“Fitch”)

rating.

This

treatment

of

split-rated

securities

may

differ

from

that

used

for

other

purposes,

such

as

for

Fund

investment

policies.

Ratings

below

BBB

by

Standard

&

Poor’s,

Baa

by

Moody’s

or

BBB

by

Fitch

are

considered

to

be

below

investment

grade.

Holdings

designated

N/R

are

not

rated

by

any

of

these

national

rating

agencies.

(4)

Defaulted

security.

A

security

whose

issuer

has

failed

to

fully

pay

principal

and/or

interest

when

due,

or

is

under

the

protection

of

bankruptcy.

(5)

Investment

valued

at

fair

value

using

methods

determined

in

good

faith

by,

or

at

the

discretion

of,

the

Board.

For

fair

value

measurement

disclosure

purposes,

investment

classified

as

Level

3.

(6)

Investment,

or

portion

of

investment,

has

been

pledged

to

collateralize

the

net

payment

obligations

for

investments

in

inverse

floating

rate

transactions.

(7)

Step-up

coupon

bond,

a

bond

with

a

coupon

that

increases

("steps

up"),

usually

at

regular

intervals,

while

the

bond

is

outstanding.

The

rate

shown

is

the

coupon

as

of

the

end

of

the

reporting

period.

(8)

Backed

by

an

escrow

or

trust

containing

sufficient

U.S.

Government

or

U.S.

Government

agency

securities,

which

ensure

the

timely

payment

of

principal

and

interest.

(9)

Principal

Amount

(000)

rounds

to

less

than

$1,000.

(10)

For

fair

value

measurement

disclosure

purposes,

investment

classified

as

Level

2.

(11)

Common

Stock

received

as

part

of

the

bankruptcy

settlements

during

February

2020

for

Beaver

County

Industrial

Development

Authority,

Pennsylvania,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Nuclear

Generation

Project,

Refunding

Series

2005A,

4.000%,

1/01/35,

Beaver

County

Industrial

Development

Authority,

Pennsylvania,

Pollution

Control

Revenue

Refunding

Bonds,

FirstEnergy

Nuclear

Generation

Project,

Series

2006A,

3.500%,

4/01/41,

Beaver

County

Industrial

Development

Authority,

Pennsylvania,

Pollution

Control

Revenue

Refunding

Bonds,

FirstEnergy

Nuclear

Generation

Project,

Series

2006B,

3.500%,

12/01/35,

Beaver

County

Industrial

Development

Authority,

Pennsylvania,

Pollution

Control

Revenue

Refunding

Bonds,

FirstEnergy

Nuclear

Generation

Project,

Series

2008A,

2.700%,

4/01/35,

Ohio

Air

Quality

Development

Authority,

Ohio,

Air

Quality

Development

Revenue

Bonds,

FirstEnergy

Generation

Corporation

Project,

Series

2009A,

5.700%,

8/01/20,

Ohio

Air

Quality

Development

Authority,

Ohio,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Generation

Corporation

Project,

Refunding

Series

2009B,

3.100%,

3/01/23,

Ohio

Air

Quality

Development

Authority,

Ohio,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Generation

Project,

Refunding

Series

2006A,

3.750%,

12/01/23,

Ohio

Water

Development

Authority,

Pollution

Control

Revenue

Refunding

Bonds,

FirstEnergy

Nuclear

Generating

Corporation

Project,

Series

2006A,

3.000%,

5/15/20,

Ohio

Water

Development

Authority,

Pollution

Control

Revenue

Refunding

Bonds,

FirstEnergy

Nuclear

Generating

Corporation

Project,

Series

2006B,

4.000%,

12/01/33,

Ohio

Water

Development

Authority,

Pollution

Control

Revenue

Refunding

Bonds,

FirstEnergy

Nuclear

Generating

Corporation

Project,

Series

2010C,

4.000%,

6/01/33.

(12)

Non-income

producing;

issuer

has

not

declared

an

ex-dividend

date

within

the

past

twelve

months.

(13)

MuniFund

Preferred

Shares,

net

of

deferred

offering

costs

as

a

percentage

of

Total

Investments

is

37.6%.

144A

Investment

is

exempt

from

registration

under

Rule

144A

of

the

Securities

Act

of

1933,

as

amended.

These

investments

may

only

be

resold

in

transactions

exempt

from

registration,

which

are

normally

those

transactions

with

qualified

institutional

buyers.

AMT

Alternative

Minimum

Tax

PIK

Payment-in-kind

(“PIK”)

security.  Depending

on

the

terms

of

the

security,

income

may

be

received

in

the

form

of

cash,

securities,

or

a

combination

of

both.  The

PIK

rate

shown,

where

applicable,

represents

the

annualized

rate

of

the

last

PIK

payment

made

by

the

issuer

as

of

the

end

of

the

reporting

period.

UB

Underlying

bond

of

an

inverse

floating

rate

trust

reflected

as

a

financing

transaction.