Impax Asset Management 13F-HR Quarterly holdings report by institutional manager

The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE

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COLUMN 1	COLUMN 2	COLUMN 3	COLUMN 4	COLUMN 5			COLUMN 6	COLUMN 7	COLUMN 8
			VALUE	SHRS OR	SH/	PUT/	INVESTMENT	OTHER	VOTING AUTHORITY
NAME OF ISSUER	TITLE OF CLASS	CUSIP	(x$1000)	PRN AMT	PRN	CALL	DISCRETION	MANAGER	SOLE	SHARED	NONE
3M Co.	COM	88579Y101	14,120	80,125	SH		SOLE		80,125	0	0
ARRIS International PLC	SHS	G0551A103	18,929	668,171	SH		SOLE		668,171	0	0
AT&T, Inc.	COM	00206R102	18,914	465,743	SH		DFND	1	465,743	0	0
AT&T, Inc.	CALL	00206R902	634	15,600	SH		SOLE		15,600	0	0
Abbott Laboratories	COM	002824100	399	9,424	SH		SOLE	1	9,424	0	0
Accenture PLC, Class A	SHS CLASS A	G1151C101	492	4,030	SH		SOLE	1	4,030	0	0
Aetna, Inc.	COM	00817Y108	1,624	14,071	SH		SOLE	1	14,071	0	0
Alleghany Corp.	COM	017175100	22,049	41,997	SH		SOLE		41,997	0	0
Alphabet, Inc., Class A	CAP STK CL A	02079K305	26,112	32,475	SH		DFND	1	32,475	0	0
Alphabet, Inc., Class C	CAP STK CL C	02079K107	25,365	32,632	SH		DFND	1	32,632	0	0
Amazon.com, Inc.	COM	023135106	20,571	24,568	SH		SOLE		24,568	0	0
Amdocs, Ltd.	SHS	G02602103	4,465	77,175	SH		SOLE		77,175	0	0
American Electric Power Co., Inc.	COM	025537101	202	3,147	SH		SOLE	1	3,147	0	0
American Tower Corp., REIT	COM	03027X100	37,557	331,393	SH		DFND	1	331,393	0	0
American Water Works Co., Inc.	COM	030420103	2,058	27,496	SH		SOLE	1	27,496	0	0
Antero Resources Corp.	COM	03674X106	16,771	622,300	SH		SOLE		622,300	0	0
Apple, Inc.	COM	037833100	37,664	333,163	SH		SOLE		333,163	0	0
Aramark	COM	03852U106	2,852	75,000	SH		SOLE		75,000	0	0
Bank of America Corp.	COM	060505104	1,024	65,440	SH		SOLE	1	65,440	0	0
Bank of New York Mellon Corp., The	COM	064058100	16,840	422,264	SH		SOLE		422,264	0	0
Becton Dickinson & Co.	COM	075887109	18,303	101,838	SH		DFND	1	101,838	0	0
Beneficial Bancorp, Inc.	COM	08171T102	13,546	920,886	SH		SOLE		920,886	0	0
Berkshire Hathaway, Inc., Class B	CL B NEW	084670702	1,016	7,032	SH		SOLE	1	7,032	0	0
Biogen, Inc.	COM	09062X103	8,429	26,928	SH		DFND	1	26,928	0	0
Bristol-Myers Squibb Co.	COM	110122108	571	10,596	SH		SOLE	1	10,596	0	0
Brookdale Senior Living, Inc.	COM	112463104	19,812	1,135,369	SH		SOLE		1,135,369	0	0
CVS Health Corp.	COM	126650100	620	6,967	SH		SOLE	1	6,967	0	0
Cabela's, Inc.	COM	126804301	24,181	440,220	SH		SOLE		440,220	0	0
Callidus Software, Inc.	COM	13123E500	519	28,263	SH		SOLE		28,263	0	0
Capitol Federal Financial, Inc.	COM	14057j101	26,349	1,872,719	SH		SOLE		1,872,719	0	0
Carter's, Inc.	COM	146229109	12,362	142,570	SH		SOLE		142,570	0	0
Celgene Corp.	COM	151020104	18,847	180,299	SH		SOLE		180,299	0	0
Charles Schwab Corp., The	COM	808513105	17,070	540,706	SH		SOLE		540,706	0	0
Charter Communications, Inc., Class A	CL A	16119P108	363	1,346	SH		SOLE	1	1,346	0	0
Charter Financial Corp.	COM	16122W108	5,178	401,997	SH		SOLE		401,997	0	0
Check Point Software Technologies, Ltd.	ORD	m22465104	2,872	37,000	SH		SOLE		37,000	0	0
Chubb, Ltd.	COM	H1467J104	30,929	246,149	SH		SOLE		246,149	0	0
Cigna Corp.	COM	125509109	214	1,640	SH		SOLE	1	1,640	0	0
Cisco Systems, Inc.	COM	17275R102	12,495	393,925	SH		DFND	1	393,925	0	0
Citigroup, Inc.	COM	172967424	16,094	340,754	SH		SOLE		340,754	0	0
Citizens Financial Group, Inc.	COM	174610105	4,942	200,000	SH		SOLE		200,000	0	0
Citrix Systems, Inc.	COM	177376100	1,704	20,000	SH		SOLE		20,000	0	0
Coca-Cola Co., The	COM	191216100	1,106	26,135	SH		SOLE	1	26,135	0	0
Coca-Cola European Partners PLC	SHS	G25839104	753	18,878	SH		SOLE	1	18,878	0	0
Cognizant Technology Solutions, Class A	CL A	192446102	1,273	26,689	SH		SOLE		26,689	0	0
Colgate-Palmolive Co.	COM	194162103	403	5,432	SH		SOLE	1	5,432	0	0
ConAgra Foods, Inc.	COM	205887102	3,298	70,000	SH		SOLE		70,000	0	0
Concho Resources, Inc.	COM	20605P101	1,374	10,000	SH		SOLE		10,000	0	0
ConocoPhillips	COM	20825C104	353	8,130	SH		DFND	1	8,130	0	0
Crown Castle International Corp., REIT	COM	22822V101	21,291	226,000	SH		SOLE		226,000	0	0
Cummins, Inc.	COM	231021106	222	1,735	SH		SOLE	1	1,735	0	0
Dominion Resources, Inc.	COM	25746U109	286	3,848	SH		SOLE	1	3,848	0	0
Duke Energy Corp.	COM	26441C204	352	4,403	SH		SOLE	1	4,403	0	0
EMCOR Group, Inc.	COM	29084Q100	17,886	300,000	SH		SOLE		300,000	0	0
EOG Resources Inc	COM	26875P101	12,572	130,000	SH		SOLE		130,000	0	0
EQT Corp.	COM	26884L109	3,848	52,991	SH		SOLE		52,991	0	0
Ecolab, Inc.	COM	278865100	12,910	106,067	SH		DFND	1	106,067	0	0
Eli Lilly & Co.	COM	532457108	513	6,395	SH		SOLE	1	6,395	0	0
Equity Residential, REIT	SH BEN INT	29476L107	1,473	22,892	SH		SOLE		22,892	0	0
Estee Lauder Cos, Inc., The, Class A	CL A	518439104	23,297	263,060	SH		DFND	1	263,060	0	0
Eversource Energy	COM	30040W108	16,062	296,451	SH		SOLE		296,451	0	0
ExlService Holdings, Inc.	COM	302081104	10,716	215,000	SH		SOLE		215,000	0	0
Expeditors Intl. of Washington, Inc.	COM	302130109	3,388	65,767	SH		SOLE		65,767	0	0
FBR & Co.	COM	30247C400	3,453	260,832	SH		SOLE		260,832	0	0
Facebook, Inc., Class A	CL A	30303M102	12,162	94,813	SH		DFND	1	94,813	0	0
First Republic Bank	COM	33616C100	9,576	124,186	SH		DFND	1	124,186	0	0
Fiserv, Inc.	COM	337738108	1,989	20,000	SH		SOLE		20,000	0	0
Forest City Realty Trust, Inc., REIT	CL A	345605109	586	25,353	SH		SOLE		25,353	0	0
Frontier Communications Corp.	COM	35906A108	149	35,752	SH		SOLE	1	35,752	0	0
General Mills, Inc.	COM	370334104	19,391	303,549	SH		DFND	1	303,549	0	0
Genpact, Ltd.	SHS	G3922B107	14,548	607,420	SH		SOLE		607,420	0	0
Gentex Corp.	COM	371901109	15,453	880,000	SH		SOLE		880,000	0	0
Genuine Parts Co.	COM	372460105	2,009	20,000	SH		SOLE		20,000	0	0
Gilead Sciences, Inc.	COM	375558103	10,189	128,781	SH		DFND	1	128,781	0	0
Goldman Sachs Group, Inc., The	COM	38141G104	12,526	77,668	SH		SOLE		77,668	0	0
HP, Inc.	COM	40434L105	171	11,029	SH		SOLE	1	11,029	0	0
Hologic, Inc.	COM	436440101	5,169	133,124	SH		DFND	1	133,124	0	0
Home Depot, Inc., The	COM	437076102	1,068	8,300	SH		DFND	1	8,300	0	0
HomeTrust Bancshares, Inc.	COM	437872104	14,533	785,590	SH		SOLE		785,590	0	0
IBM	COM	459200101	928	5,842	SH		SOLE	1	5,842	0	0
ICF International, Inc.	COM	44925C103	10,641	240,100	SH		SOLE		240,100	0	0
ICON PLC	SHS	G4705A100	10,882	140,647	SH		SOLE		140,647	0	0
ION Geophysical Corp.	COM	462044207	343	50,000	SH		SOLE		50,000	0	0
Independent Bank Corp.	COM	453836108	13,665	252,628	SH		SOLE		252,628	0	0
Ingersoll-Rand PLC	SHS	G47791101	18,871	277,763	SH		DFND	1	277,763	0	0
Ingram Micro, Inc., Class A	CL A	457153104	17,284	484,682	SH		SOLE		484,682	0	0
Integra LifeSciences Holdings Corp.	COM	457985208	6,626	80,261	SH		SOLE		80,261	0	0
Investors Bancorp, Inc.	COM	46146L101	24,728	2,058,983	SH		SOLE		2,058,983	0	0
Jamba, Inc.	COM	47023A309	6,326	579,307	SH		SOLE		579,307	0	0
Johnson & Johnson	COM	478160104	36,370	307,882	SH		DFND	1	307,882	0	0
Jones Lang LaSalle, Inc.	COM	48020Q107	2,712	23,835	SH		DFND	1	23,835	0	0
KLX, Inc.	COM	482539103	7,920	225,000	SH		SOLE		225,000	0	0
Kaiser Aluminum Corp.	COM PAR $0.01	483007704	12,137	140,326	SH		SOLE		140,326	0	0
Kearny Financial Corp/MD	COM	48716p108	13,248	973,434	SH		SOLE		973,434	0	0
Kellogg Co.	COM	487836108	1,602	20,681	SH		SOLE	1	20,681	0	0
KeyCorp	COM	493267108	1,764	144,984	SH		SOLE	1	144,984	0	0
Kimberly-Clark Corp.	COM	494368103	301	2,384	SH		SOLE	1	2,384	0	0
Korn/Ferry International	COM	500643200	9,723	463,000	SH		SOLE		463,000	0	0
Legg Mason, Inc.	COM	524901105	18,258	545,347	SH		SOLE		545,347	0	0
Life Storage, Inc., REIT	COM	53223X107	9,428	106,000	SH		SOLE		106,000	0	0
Ligand Pharmaceuticals, Inc.	COM	53220K504	12,865	126,049	SH		SOLE		126,049	0	0
Lincoln Electric Holdings, Inc.	COM	533900106	11,373	181,627	SH		SOLE		181,627	0	0
MRC Global, Inc.	COM	55345K103	15,609	950,000	SH		SOLE		950,000	0	0
Macy's, Inc.	COM	55616P104	1,286	34,700	SH		SOLE	1	34,700	0	0
Masco Corp.	COM	574599106	2,434	70,931	SH		SOLE		70,931	0	0
MasterCard, Inc., Class A	CL A	57636Q104	641	6,303	SH		SOLE	1	6,303	0	0
McKesson Corp.	COM	58155q103	244	1,462	SH		SOLE	1	1,462	0	0
Medtronic PLC	SHS	G5960L103	772	8,932	SH		SOLE	1	8,932	0	0
Merck & Co., Inc.	COM	58933Y105	22,210	355,870	SH		SOLE		355,870	0	0
Meridian Bancorp, Inc.	COM	58958U103	15,220	977,542	SH		SOLE		977,542	0	0
MetLife, Inc.	COM	59156R108	264	5,947	SH		SOLE	1	5,947	0	0
Metaldyne Performance Group, Inc.	COM	59116R107	8,500	536,295	SH		SOLE		536,295	0	0
Michael Kors Holdings, Ltd.	SHS	G60754101	540	11,550	SH		SOLE	1	11,550	0	0
Microsoft Corp.	COM	594918104	39,716	689,508	SH		DFND	1	689,508	0	0
Mohawk Industries, Inc.	COM	608190104	6,010	30,000	SH		SOLE		30,000	0	0
Molson Coors Brewing Co.	CL B	60871r209	12,078	110,000	SH		SOLE		110,000	0	0
Mondelez International, Inc., Class A	CL A	609207105	437	9,959	SH		SOLE	1	9,959	0	0
NIKE, Inc., Class B	CL B	654106103	7,323	139,081	SH		DFND	1	139,081	0	0
NN, Inc.	COM	629337106	6,570	360,000	SH		SOLE		360,000	0	0
Natus Medical, Inc.	COM	639050103	16,895	430,000	SH		SOLE		430,000	0	0
Netflix, Inc.	COM	64110L106	276	2,801	SH		SOLE	1	2,801	0	0
Newell Brands, Inc.	COM	651229106	3,875	73,591	SH		SOLE		73,591	0	0
Newmont Mining Corp.	COM	651639106	725	18,446	SH		DFND	1	18,446	0	0
ONE Gas, Inc.	COM	68235P108	10,326	166,977	SH		SOLE		166,977	0	0
Occidental Petroleum Corp.	COM	674599105	25,167	345,127	SH		SOLE		345,127	0	0
Oshkosh Corp.	COM	688239201	13,379	238,907	SH		SOLE		238,907	0	0
PNC Financial Services Group, Inc.	COM	693475105	288	3,200	SH		SOLE	1	3,200	0	0
PepsiCo, Inc.	COM	713448108	25,507	234,507	SH		DFND	1	234,507	0	0
Performance Food Group Co.	COM	71377A103	11,667	470,426	SH		SOLE		470,426	0	0
Phillips 66	COM	718546104	248	3,077	SH		SOLE	1	3,077	0	0
Physicians Realty Trust, REIT	COM	71943U104	10,514	488,117	SH		SOLE		488,117	0	0
Pioneer Natural Resources Co.	COM	723787107	23,048	124,145	SH		SOLE		124,145	0	0
Planet Fitness, Inc., Class A	CL A	72703H101	5,991	298,530	SH		SOLE		298,530	0	0
Procter & Gamble Co., The	COM	742718109	22,917	255,342	SH		DFND	1	255,342	0	0
Progress Software Corp.	COM	743312100	9,706	356,838	SH		SOLE		356,838	0	0
Prologis, Inc., REIT	COM	74340W103	3,105	58,000	SH		SOLE		58,000	0	0
Prudential Financial, Inc.	COM	744320102	232	2,840	SH		SOLE	1	2,840	0	0
QUALCOMM, Inc.	COM	747525103	26,715	390,000	SH		SOLE		390,000	0	0
Realogy Holdings Corp.	COM	75605Y106	447	17,276	SH		SOLE	1	17,276	0	0
RenaissanceRe Holdings, Ltd.	COM	G7496G103	26,993	224,644	SH		SOLE		224,644	0	0
Robert Half International, Inc.	COM	770323103	1,704	45,000	SH		SOLE		45,000	0	0
Ross Stores, Inc.	COM	778296103	10,288	160,000	SH		SOLE		160,000	0	0
Ryman Hospitality Properties, Inc., REIT	COM	78377t107	6,986	145,048	SH		SOLE		145,048	0	0
Sally Beauty Holdings, Inc.	COM	79546E104	18,073	703,780	SH		SOLE		703,780	0	0
Schlumberger, Ltd.	COM	806857108	9,437	120,000	SH		SOLE		120,000	0	0
Spire, Inc.	COM	84857L101	4,900	76,878	SH		SOLE		76,878	0	0
Stanley Black & Decker, Inc.	COM	854502101	21,346	173,575	SH		SOLE		173,575	0	0
Syntel, Inc.	COM	87162H103	18,175	433,668	SH		SOLE		433,668	0	0
TEGNA, Inc.	COM	87901j105	284	13,000	SH		SOLE	1	13,000	0	0
TJX Cos., Inc., The	COM	872540109	321	4,287	SH		SOLE	1	4,287	0	0
Tailored Brands, Inc.	COM	87403a107	8,546	544,330	SH		SOLE		544,330	0	0
Terreno Realty Corp., REIT	COM	88146M101	4,127	150,000	SH		SOLE		150,000	0	0
Texas Instruments, Inc.	COM	882508104	447	6,375	SH		SOLE	1	6,375	0	0
TheStreet, Inc.	COM	88368Q103	1,619	1,471,653	SH		SOLE		1,471,653	0	0
Thermo Fisher Scientific, Inc.	COM	883556102	21,473	135,000	SH		SOLE		135,000	0	0
Thermon Group Holdings, Inc.	COM	88362t103	11,222	568,206	SH		SOLE		568,206	0	0
Time Warner, Inc.	COM	887317303	18,061	226,863	SH		SOLE		226,863	0	0
Travelers Cos., Inc., The	COM	89417E109	217	1,896	SH		SOLE	1	1,896	0	0
US Bancorp	COM	902973304	11,212	261,419	SH		DFND	1	261,419	0	0
US Foods Holding Corp.	COM	912008109	16,374	693,537	SH		SOLE		693,537	0	0
Ulta Salon Cosmetics & Fragrance, Inc.	COM	90384S303	671	2,820	SH		SOLE	1	2,820	0	0
United Parcel Service, Inc., Class B	CL B	911312106	15,266	139,596	SH		DFND	1	139,596	0	0
Unitil Corp.	COM	913259107	14,257	365,000	SH		SOLE		365,000	0	0
Verint Systems, Inc.	COM	92343X100	14,062	373,689	SH		SOLE		373,689	0	0
Verizon Communications, Inc.	COM	92343V104	1,344	25,863	SH		SOLE	1	25,863	0	0
Visa, Inc., Class A	COM CL A	92826C839	16,744	202,469	SH		DFND	1	202,469	0	0
WCI Communities, Inc.	COM PAR $0.01	92923C807	18,976	800,000	SH		SOLE		800,000	0	0
WESCO International, Inc.	COM	95082P105	7,530	122,452	SH		SOLE		122,452	0	0
Walt Disney Co., The	COM DISNEY	254687106	929	10,004	SH		DFND	1	10,004	0	0
Waste Management, Inc.	COM	94106L109	19,426	304,681	SH		SOLE		304,681	0	0
Wells Fargo & Co.	COM	949746101	1,678	37,904	SH		SOLE	1	37,904	0	0
Westell Technologies, Inc., Class A	CL A	957541105	802	1,565,681	SH		SOLE		1,565,681	0	0
Weyerhaeuser Co., REIT	COM	962166104	4,735	148,239	SH		DFND	1	148,239	0	0
White Mountains Insurance Group, Ltd.	COM	G9618E107	20,165	24,295	SH		SOLE		24,295	0	0
Whole Foods Market, Inc.	COM	966837106	5,728	202,058	SH		DFND	1	202,058	0	0
Willis Towers Watson PLC	SHS	G96629103	2,102	15,835	SH		DFND	1	15,835	0	0
Xerox Corp.	COM	984121103	1,731	170,830	SH		SOLE	1	170,830	0	0
Yahoo!, Inc.	COM	984332106	2,119	49,174	SH		SOLE	1	49,174	0	0
Zoetis, Inc.	CL A	98978V103	26,042	500,706	SH		SOLE		500,706	0	0
SPDR S&P 500 ETF Trust	TR UNIT	78462f103	446	2,061	SH		SOLE	1	2,061	0	0
Vanguard FTSE Developed Market	FTSE DEV MKT ETF	921943858	1,277	34,128	SH		DFND	1	34,128	0	0
Royal Bank of Scotland Group PLC	DEBT 7.500%12/3	780099CJ4	1,242	1,350,000	PRN		SOLE		1,350,000	0	0