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
ANDEAVOR	COM	03349M105	17,204	114,777	SH		SOLE		114,777	0	0
AV HOMES INC	COM	00234P102	7,091	329,801	SH		SOLE		329,801	0	0
ALLEGRO MERGER CORP	*W EXP 01/06/202	01749N111	48	137,320	SH		SOLE		137,320	0	0
ALLEGRO MERGER CORP	COM	01749N103	3,529	370,269	SH		SOLE		370,269	0	0
ALTA MESA RES INC	CL A	02133L109	1,614	386,153	SH		SOLE		386,153	0	0
AVISTA HEALTHCARE PUB ACQ CO	CL A	G0726L125	11,226	1,108,178	SH		SOLE		1,108,178	0	0
BIG ROCK PARTNERS ACQUISI CO	COM	089482103	2,030	202,748	SH		SOLE		202,748	0	0
BISON CAP ACQUISITION CORP	ORD SHS	G1142P104	1,486	145,573	SH		SOLE		145,573	0	0
BLACK RIDGE ACQUISITION CORP	COM	09216T107	7,379	756,015	SH		SOLE		756,015	0	0
CAPITOL INVT CORP IV	CL A ORD	G18920101	6,245	630,824	SH		SOLE		630,824	0	0
CNA FINL CORP	COM	126117100	997	21,844	SH		SOLE		21,844	0	0
CONSTELLATION ALPHA CAP CORP	SHS	G2379F108	4,310	425,910	SH		SOLE		425,910	0	0
DISCOVERY INC	COM SER C	25470F302	3,742	126,492	SH		SOLE		126,492	0	0
DRAPER OAKWOOD TECHNOLOGY	COM CL A	26146L103	2,715	267,525	SH		SOLE		267,525	0	0
EASTERLY ACQUISITION CORP	COM	27616L102	9,518	910,859	SH		SOLE		910,859	0	0
ENERGY TRANSFER PARTNERS LP	UNIT LTD PRT INT	29278N103	2,047	91,974	SH		SOLE		91,974	0	0
FAR PT ACQUISITION CORP	COM CL A	30734W109	1,411	146,520	SH		SOLE		146,520	0	0
FEDERAL STR ACQUISITION CORP	CL A	31421V107	9,644	953,934	SH		SOLE		953,934	0	0
FGL HLDGS	*W EXP 11/30/202	G3402M110	1,401	711,228	SH		SOLE		711,228	0	0
FOREST CITY RLTY TR INC	COM CL A	345605109	7,057	281,259	SH		SOLE		281,259	0	0
FORUM MERGER II CORP	CL A	34986F103	3,080	322,530	SH		SOLE		322,530	0	0
GIGCAPITAL INC	COM	37518N106	8,681	874,198	SH		SOLE		874,198	0	0
GORDON POINTE ACQUISITION CO	COM CLASS A	382788107	3,690	372,746	SH		SOLE		372,746	0	0
GORES HOLDINGS III INC	UNIT 09/07/2024	38286G208	1,013	99,241	SH		SOLE		99,241	0	0
GRAMERCY PPTY TR	COM NEW	385002308	3,915	142,679	SH		SOLE		142,679	0	0
GREEN BANCORP INC	COM	39260X100	594	26,859	SH		SOLE		26,859	0	0
GS ACQUISITION HLDGS CORP	*W EXP 06/12/202	36255F110	52	30,476	SH		SOLE		30,476	0	0
GS ACQUISITION HLDGS CORP	COM CL A	36255F102	952	97,680	SH		SOLE		97,680	0	0
GTY TECHNOLOGY HOLDINGS INC	CL A	G4182A102	7,280	717,917	SH		SOLE		717,917	0	0
HAYMAKER ACQUISITION CORP	COM CLASS A	420870107	4,262	436,726	SH		SOLE		436,726	0	0
HENNESSY CAP ACQUSTON CORP I	COM	42588L105	15,287	1,500,202	SH		SOLE		1,500,202	0	0
HUNTER MARITIME ACQUISITION	*W EXP 11/17/202	Y37828129	16	70,285	SH		SOLE		70,285	0	0
HUNTER MARITIME ACQUISITION	CL A	Y37828111	1,790	179,716	SH		SOLE		179,716	0	0
I AM CAP ACQUISITION CO	COM	45074Q108	2,561	252,330	SH		SOLE		252,330	0	0
INDUSTREA ACQUISITION CORP	CL A	45579J104	7,527	737,961	SH		SOLE		737,961	0	0
INVUITY INC	COM NEW	46187J205	1,612	217,852	SH		SOLE		217,852	0	0
K2M GROUP HLDGS INC	COM	48273J107	4,248	155,219	SH		SOLE		155,219	0	0
KAYNE ANDERSON ACQUISITION	COM CL A	48661U102	3,138	308,902	SH		SOLE		308,902	0	0
KBL MERGER CORP IV	*W EXP 01/15/202	48242A112	30	144,468	SH		SOLE		144,468	0	0
KBL MERGER CORP IV	COM	48242A104	6,215	615,384	SH		SOLE		615,384	0	0
KLX INC	COM	482539103	11,279	179,662	SH		SOLE		179,662	0	0
LANDCADIA HLDGS INC	CL A	51476W107	2,439	224,956	SH		SOLE		224,956	0	0
LEGACY ACQUISITION CORP	COM CL A	524643103	5,654	582,300	SH		SOLE		582,300	0	0
LEISURE ACQUISITION CORP	COM	52539T107	3,785	388,200	SH		SOLE		388,200	0	0
LF CAP ACQUISITION CORP	CL A	50200K108	2,801	293,040	SH		SOLE		293,040	0	0
LIBERTY GLOBAL PLC	SHS CL A	G5480U104	1,459	50,415	SH		SOLE		50,415	0	0
MATLIN & PARTNERS ACQUISITIO	CL A	57682V106	12,893	1,288,033	SH		SOLE		1,288,033	0	0
MEGALITH FINL ACQUISITION CO	*W EXP 08/26/202	58518F117	93	155,564	SH		SOLE		155,564	0	0
MEGALITH FINL ACQUISITION CO	CL A COM	58518F109	5,397	567,517	SH		SOLE		567,517	0	0
MODERN MEDIA ACQUISITION	COM	60765P103	10,738	1,063,137	SH		SOLE		1,063,137	0	0
MTECH ACQUISITION CORP	COM CLASS A	55378W107	501	49,140	SH		SOLE		49,140	0	0
MUDRICK CAP ACQUISITION CORP	COM CLASS A	624745105	3,775	389,991	SH		SOLE		389,991	0	0
ONE MADISON CORP	COM CL A	G6772P100	3,074	316,258	SH		SOLE		316,258	0	0
OPES ACQUISITION CORP	*W EXP 03/13/202	68373P118	59	146,250	SH		SOLE		146,250	0	0
OPES ACQUISITION CORP	COM	68373P100	1,441	146,250	SH		SOLE		146,250	0	0
PENN NATL GAMING INC	COM	707569109	392	11,896	SH		SOLE		11,896	0	0
PENSARE ACQUISITION CORP	COM	70957E105	18,302	1,837,578	SH		SOLE		1,837,578	0	0
PINNACLE FOODS INC DEL	COM	72348P104	15,187	234,333	SH		SOLE		234,333	0	0
PLATINUM EAGLE ACQUISITIN CO	*W EXP 01/17/202	G7126L118	66	48,655	SH		SOLE		48,655	0	0
PLATINUM EAGLE ACQUISITIN CO	SHS CL A	G7126L100	1,443	145,965	SH		SOLE		145,965	0	0
PURE ACQUISITION CORP	CL A	74621Q106	3,342	344,405	SH		SOLE		344,405	0	0
REGALWOOD GLOBAL ENERGY LTD	COM CL A	G74760102	8,447	865,470	SH		SOLE		865,470	0	0
SOCIAL CAP HEDOSOPHIA HLDGS	CL A	G8250R103	23,738	2,395,323	SH		SOLE		2,395,323	0	0
SONIC CORP	COM	835451105	340	7,847	SH		SOLE		7,847	0	0
SPARTAN ENERGY ACQUISITON CO	UNIT 99/99/9999	846784114	496	48,839	SH		SOLE		48,839	0	0
STELLAR ACQUISITION III INC	*W EXP 03/22/202	Y8172W115	12	86,574	SH		SOLE		86,574	0	0
STELLAR ACQUISITION III INC	COM	Y8172W107	1,011	96,300	SH		SOLE		96,300	0	0
SYNTEL INC	COM	87162H103	5,515	134,579	SH		SOLE		134,579	0	0
THUNDER BRIDGE ACQUISITION L	*W EXP 01/01/202	G8857R126	7	14,531	SH		SOLE		14,531	0	0
THUNDER BRIDGE ACQUISITION L	SHS CLASS A	G8857R100	2,861	294,602	SH		SOLE		294,602	0	0
TKK SYMPHONY ACQUISITION COR	ORD SHS	G88950103	3,742	393,844	SH		SOLE		393,844	0	0
TPG PACE HLDGS CORP	CL A	G89827128	5,993	595,145	SH		SOLE		595,145	0	0
TRINITY MERGER CORP	*W EXP 05/11/202	89653L114	44	88,201	SH		SOLE		88,201	0	0
TRINITY MERGER CORP	COM CL A	89653L106	8,402	854,699	SH		SOLE		854,699	0	0
TWELVE SEAS INVESTMENT COMPA	SHS	G9145A107	1,870	195,360	SH		SOLE		195,360	0	0
U S G CORP	COM NEW	903293405	4,230	97,678	SH		SOLE		97,678	0	0
UNION ACQUISITION CORP	SHS	G9366W101	2,377	243,750	SH		SOLE		243,750	0	0
VANTAGE ENERGY ACQUISITION	COM CL A	92211L105	9,553	960,051	SH		SOLE		960,051	0	0
VECTOIQ ACQUISITION CORP	COM	92243N103	7,538	787,672	SH		SOLE		787,672	0	0
XERIUM TECHNOLOGIES INC	COM NEW	98416J118	1,335	99,200	SH	Put	SOLE		99,200	0	0
EXXON MOBIL CORP	COM	30231G102	26,241	308,650	SH		SOLE		308,650	0	0
HEALTHEQUITY INC	COM	42226A107	45,479	481,717	SH		SOLE		481,717	0	0
NUTRIEN LTD	COM	67077M108	25,220	437,080	SH		SOLE		437,080	0	0
VERIZON COMMUNICATIONS INC	COM	92343V104	16,837	315,365	SH		SOLE		315,365	0	0
VISTA OUTDOOR INC	COM	928377100	26,858	1,501,276	SH		SOLE		1,501,276	0	0