W. R. Berkley (WRB) 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
AGRIUM INC	COM	008916108	21,013	196,000	SH		SOLE	BIC-EQUITY	196,000	0	0
ALERE INC	COM	01449J105	4,223	100,100	SH	Call	SOLE		100,100	0	0
ANDINA ACQUISITION CORP II	SHS	G0441P104	1,471	144,765	SH		SOLE		144,765	0	0
ASTORIA FINL CORP	COM	046265104	771	35,846	SH		SOLE		35,846	0	0
AVISTA HEALTHCARE PUB ACQ CO	CL A	G0726L125	6,517	651,732	SH		SOLE		651,732	0	0
AXAR ACQUISITION CORP	COM	05455L102	1,015	100,504	SH		SOLE		100,504	0	0
BANKRATE INC DEL	COM	06647F102	300	21,532	SH		SOLE		21,532	0	0
BISON CAP ACQUISITION CORP	ORD SHS	G1142P104	478	48,448	SH		SOLE		48,448	0	0
BOULEVARD ACQUISITION	CL A	10157Q102	16,602	1,660,232	SH		SOLE		1,660,232	0	0
CAPITOL INVT CORP IV	UNIT 99/99/9999	G18920119	2,452	242,245	SH		SOLE		242,245	0	0
CENTURYLINK INC	COM	156700106	2,631	139,200	SH	Put	SOLE		139,200	0	0
COBALT INTERNATIONAL ENERGY INC	COM	19075F304	26	18,360	SH		SOLE	BIC-EQUITY	18,360	0	0
CONSTELLATION ALPHA CAP CORP	*W EXP 03/23/202	G2379F116	28	121,123	SH		SOLE		121,123	0	0
CONSTELLATION ALPHA CAP CORP	SHS	G2379F108	3,528	363,337	SH		SOLE		363,337	0	0
DOUBLE EAGLE ACQUISITION COR	COM	G28195124	19,366	1,917,377	SH		SOLE		1,917,377	0	0
DRAPER OAKWOOD TECHNOLOGY	UNIT 09/30/2024	26146L202	495	48,448	SH		SOLE		48,448	0	0
EASTERLY ACQUISITION CORP	COM	27616L102	483	48,345	SH		SOLE		48,345	0	0
ELECTRUM SPL ACQUISITION COR	SHS	G3105C104	11,595	1,131,190	SH		SOLE		1,131,190	0	0
FEDERAL STR ACQUISITION CORP	*W EXP 07/24/202	31421V115	64	64,981	SH		SOLE		64,981	0	0
FEDERAL STR ACQUISITION CORP	CL A	31421V107	6,388	654,061	SH		SOLE		654,061	0	0
FINTECH ACQUISITION CORP II	COM	31810G109	5,697	581,340	SH		SOLE		581,340	0	0
FORUM MERGER CORP	COM CL A	34985B103	2,635	271,320	SH		SOLE		271,320	0	0
GLOBAL PARTNER ACQUISITION C	COM	37954X105	975	97,240	SH		SOLE		97,240	0	0
GORES HLDGS II INC	COM CL A	382867109	5,168	518,361	SH		SOLE		518,361	0	0
GP INVTS ACQUISITION COR	SHS	G40357124	8,827	929,175	SH		SOLE		929,175	0	0
GTY TECHNOLOGY HOLDINGS INC	CL A	G4182A102	1,704	169,376	SH		SOLE		169,376	0	0
HEALTHEQUITY INC	COM	42226A107	371,570	7,346,178	SH		SOLE	BKLYCAPALT	7,346,178	0	0
HENNESSY CAP ACQUSTON CORP I	COM	42588L105	8,837	896,259	SH		SOLE		896,259	0	0
HUNTER MARITIME ACQUISITION	*W EXP 99/99/999	Y37828129	53	89,858	SH		SOLE		89,858	0	0
HUNTER MARITIME ACQUISITION	CL A	Y37828111	1,754	179,716	SH		SOLE		179,716	0	0
I AM CAP ACQUISITION CO	UNIT 08/15/2022	45074Q207	993	96,898	SH		SOLE		96,898	0	0
INDUSTREA ACQUISITION CORP	CL A	45579J104	5,049	518,284	SH		SOLE		518,284	0	0
KAYNE ANDERSON ACQUISITION	COM CL A	48661U102	11,018	1,130,067	SH		SOLE		1,130,067	0	0
KBL MERGER CORP IV	*W EXP 01/15/202	48242A112	25	145,346	SH		SOLE		145,346	0	0
KBL MERGER CORP IV	COM	48242A104	2,354	242,244	SH		SOLE		242,244	0	0
KBL MERGER CORP IV	RIGHT 03/22/2019	48242A120	68	233,750	SH		SOLE		233,750	0	0
KITE PHARMA INC	COM	49803L109	4,046	22,500	SH		SOLE		22,500	0	0
KITE PHARMA INC	COM	49803L109	8,109	45,100	SH	Put	SOLE		45,100	0	0
LANDAUER INC	COM	51476K103	1,600	23,770	SH		SOLE		23,770	0	0
LANDCADIA HLDGS INC	CL A	51476W107	2,876	287,070	SH		SOLE		287,070	0	0
LEVEL 3 COMMUNICATIONS INC	COM NEW	52729N308	13,624	255,666	SH		SOLE		255,666	0	0
LIBERTY GLOBAL PLC	SHS CL C	G5480U120	2,218	67,828	SH		SOLE		67,828	0	0
LOEWS CORP	COM	540424108	2,949	61,624	SH		SOLE		61,624	0	0
M I ACQUISITIONS INC	COM	55304A104	1,473	144,450	SH		SOLE		144,450	0	0
M III ACQUISITION CORP	COM	55378T104	5,840	595,873	SH		SOLE		595,873	0	0
MATLIN & PARTNERS ACQUISITION	CL A	57682V106	9,793	999,331	SH		SOLE		999,331	0	0
MODERN MEDIA ACQUISITION	COM	60765P103	9,646	988,277	SH		SOLE		988,277	0	0
NATIONAL ENERGY SERVICES REU	SHS	G6375R107	4,194	436,005	SH		SOLE		436,005	0	0
OSPREY ENERGY ACQUISITION CO	CL A COM	688397108	4,225	436,040	SH		SOLE		436,040	0	0
PAREXEL INTL CORP	COM	699462107	42,375	480,982	SH		SOLE		480,982	0	0
PENSARE ACQUISITION CORP	COM	70957E105	9,354	967,360	SH		SOLE		967,360	0	0
SANDY SPRING BANCORP INC	COM	800363103	1,575	38,000	SH	Put	SOLE		38,000	0	0
SANDY SPRING BANCORP INC	COM	800363103	401	9,700	SH	Call	SOLE		9,700	0	0
SILVER RUN ACQUISITION	COM CL A	82812A103	2,728	268,018	SH		SOLE		268,018	0	0
SOCIAL CAP HEDOSOPHIA HLDGS	UNIT 99/99/9999	G8250R111	2,683	254,355	SH		SOLE		254,355	0	0
STARWOOD PPTY TR INC	NOTE 3.750%10/1	85571BAC9	4,515	4,506,000	PRN		SOLE		4,506,000	0	0
STELLAR ACQUISITION III INC	*W EXP 03/22/202	Y8172W115	36	96,204	SH		SOLE		96,204	0	0
STELLAR ACQUISITION III INC	COM	Y8172W107	979	96,300	SH		SOLE		96,300	0	0
TPG PACE ENERGY HLDGS CORP	CL A	872656103	940	96,897	SH		SOLE		96,897	0	0
TPG PACE HLDGS CORP	CL A	G89827128	1,492	153,772	SH		SOLE		153,772	0	0
TWENTY FIRST CENTY FOX INC	CL B	90130A200	3,301	128,004	SH		SOLE		128,004	0	0
UNILEVER PLC	SPON ADR NEW	904767704	2,803	48,355	SH		SOLE		48,355	0	0
VANTAGE ENERGY ACQUISITION	COM CL A	92211L105	5,700	582,873	SH		SOLE		582,873	0	0
VWR CORP	COM	91843L103	3,215	97,093	SH		SOLE		97,093	0	0
WESTERN REFNG LOGISTICS LP	COM UNIT REP LTP	95931Q205	2,592	100,447	SH		SOLE		100,447	0	0
WR BERKLEY CORP	COM	084423102	5,454	81,726	SH		SOLE	BKLYALT	81,726	0	0