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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OMB Number:		3235-0006
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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
8I ENTERPRISES ACQUISITION C	SHS	G2956M104	2,564	256,439	SH		SOLE		256,439	0	0
ACAMAR PARTNERS ACQSITION CO	CL A	004285102	3,426	347,865	SH		SOLE		347,865	0	0
ACT II GLOBAL ACQUISITION CO	CL A SHS	G0080J104	1,067	108,076	SH		SOLE		108,076	0	0
ALBERTON ACQUISITION CORP	*W EXP 04/26/202	G35006124	6	198,484	SH		SOLE		198,484	0	0
ALBERTON ACQUISITION CORP	ORD SHS	G35006108	7,454	709,878	SH		SOLE		709,878	0	0
ALBERTON ACQUISITION CORP	RIGHT 10/04/2020	G35006132	22	118,055	SH		SOLE		118,055	0	0
ALLEGRO MERGER CORP	*W EXP 01/06/202	01749N111	6	113,799	SH		SOLE		113,799	0	0
ALLEGRO MERGER CORP	COM	01749N103	6,415	620,989	SH		SOLE		620,989	0	0
ALPHABET INC	CAP STK CL A	02079K305	1,394	1,200	SH		SOLE		1,200	0	0
AMCI ACQUISITION CORP	*W EXP 05/20/202	00165R119	2	9,939	SH		SOLE		9,939	0	0
AMCI ACQUISITION CORP	CLASS A	00165R101	9,701	954,850	SH		SOLE		954,850	0	0
ANDINA ACQUISITION CORP III	RIGHT 07/31/2020	G04415132	14	98,774	SH		SOLE		98,774	0	0
ANDINA ACQUISITION CORP III	SHS	G04415108	6,717	666,937	SH		SOLE		666,937	0	0
CF FIN ACQUISITION CORP	COM CL A	12528N107	14,030	1,363,451	SH		SOLE		1,363,451	0	0
CHP MERGER CORP	UNIT 11/22/2024	12558Y205	390	39,400	SH		SOLE		39,400	0	0
CHURCHILL CAP CORP II	CL A	17143G106	2,532	254,485	SH		SOLE		254,485	0	0
CHURCHILL CAP CORP II	UNIT 99/99/9999	17143G205	1,003	99,282	SH		SOLE		99,282	0	0
COLLIER CREEK HOLDINGS	COM CL A	G22707106	11,800	1,153,379	SH		SOLE		1,153,379	0	0
CONYERS PK II ACQUISITION CO	COM CL A	212896104	836	84,481	SH		SOLE		84,481	0	0
CRESCENT ACQUISITION CORP	COM CL A	22564L105	11,683	1,186,122	SH		SOLE		1,186,122	0	0
DFP HEALTHCARE ACQUISITNS CO	UNIT 03/31/2025	23343Q209	245	24,848	SH		SOLE		24,848	0	0
DIAMONDPEAK HLDGS COR	COM CL A	25280H100	8,151	783,723	SH		SOLE		783,723	0	0
DMY TECHNOLOGY GROUP INC	UNIT 99/99/9999	233253202	244	24,846	SH		SOLE		24,846	0	0
EAST STONE ACQUISITION CORP	UNIT 12/31/2026	G2911D124	1,705	173,932	SH		SOLE		173,932	0	0
FAR PT ACQUISITION CORP	COM CL A	30734W109	19,100	1,887,397	SH		SOLE		1,887,397	0	0
FINTECH ACQUISITION CORP III	COM CL A	31811A101	7,465	745,792	SH		SOLE		745,792	0	0
FORTY SEVEN INC	COM	34983P104	3,216	33,700	SH		SOLE		33,700	0	0
FORTY SEVEN INC	COM	34983P104	3,216	33,700	SH	Put	SOLE		33,700	0	0
FORUM MERGER II CORP	CL A	34986F103	17,800	1,729,869	SH		SOLE		1,729,869	0	0
FOX CORP	CL B COM	35137L204	562	24,562	SH		SOLE		24,562	0	0
GALILEO ACQUISITION CORP	SHS	G3770A102	953	98,500	SH		SOLE		98,500	0	0
GIGCAPITAL2 INC	COM	375036100	10,506	1,055,881	SH		SOLE		1,055,881	0	0
GORDON POINTE ACQUISITION CO	COM CLASS A	382788107	5,528	544,597	SH		SOLE		544,597	0	0
GORES HLDGS IV INC	UNIT 02/01/2023	382865202	247	24,560	SH		SOLE		24,560	0	0
GORES METROPOULOS INC	COM CL A	382872109	8,329	819,796	SH		SOLE		819,796	0	0
GRAF INDL CORP	COM	384278107	9,650	948,857	SH		SOLE		948,857	0	0
GX ACQUISITION CORP	COM CL A	36251A107	12,212	1,246,026	SH		SOLE		1,246,026	0	0
HAYMAKER ACQUISITION CORP II	COM CL A	42087L101	1,943	198,438	SH		SOLE		198,438	0	0
HEALTHCARE MERGER CORP	*W EXP 12/17/202	42227L110	20	21,670	SH		SOLE		21,670	0	0
HEALTHCARE MERGER CORP	COM CL A	42227L102	478	49,250	SH		SOLE		49,250	0	0
HENNESSY CAP ACQUSTION CORP	CL A COM	42589C104	13,524	1,337,675	SH		SOLE		1,337,675	0	0
HL ACQUISITIONS CORP	SHS	G4603R106	3,202	307,807	SH		SOLE		307,807	0	0
INTERPRIVATE ACQUISITION COR	*W EXP 10/24/202	46064A111	8	37,271	SH		SOLE		37,271	0	0
INTERPRIVATE ACQUISITION COR	COM	46064A103	2,597	273,322	SH		SOLE		273,322	0	0
KBL MERGER CORP IV	*W EXP 01/15/202	48242A112	8	143,476	SH		SOLE		143,476	0	0
LANDCADIA HLDGS II INC	CL A	51476X105	2,927	298,722	SH		SOLE		298,722	0	0
LEGACY ACQUISITION CORP	COM CL A	524643103	14,667	1,414,401	SH		SOLE		1,414,401	0	0
LEISURE ACQUISITION CORP	COM	52539T107	12,046	1,150,547	SH		SOLE		1,150,547	0	0
LEO HOLDINGS CORP	COM CL A	G5463L105	7,299	708,668	SH		SOLE		708,668	0	0
LF CAP ACQUISITION CORP	CL A	50200K108	7,514	725,959	SH		SOLE		725,959	0	0
LGL SYS ACQUISITION CORP	UNIT 10/24/2024	50201G205	2,339	232,265	SH		SOLE		232,265	0	0
LIBERTY GLOBAL PLC	SHS CL A	G5480U104	282	17,091	SH		SOLE		17,091	0	0
LIBERTY LATIN AMERICA LTD	COM CL C	G9001E128	652	63,509	SH		SOLE		63,509	0	0
LIFESCI ACQUISITION CORP	UNIT 03/31/2025	53228P208	447	44,726	SH		SOLE		44,726	0	0
LIV CAP ACQUISITION CORP	*W EXP 12/13/202	G5510C116	21	98,300	SH		SOLE		98,300	0	0
LIV CAP ACQUISITION CORP	CL A	G5510C108	936	98,300	SH		SOLE		98,300	0	0
LOEWS CORP	COM	540424108	500	14,354	SH		SOLE		14,354	0	0
MEGALITH FINL ACQUISITION CO	*W EXP 08/26/202	58518F117	34	153,761	SH		SOLE		153,761	0	0
MEGALITH FINL ACQUISITION CO	CL A COM	58518F109	8,468	822,922	SH		SOLE		822,922	0	0
MONOCLE ACQUISITION CORP	COM	609754106	9,772	972,303	SH		SOLE		972,303	0	0
MUDRICK CAP ACQUISITION CORP	COM CLASS A	624745105	4,535	438,230	SH		SOLE		438,230	0	0
MUTUALFIRST FINL INC	COM	62845B104	1,131	40,102	SH		SOLE		40,102	0	0
NEBULA ACQUISITION CORP	COM CLASS A	629076100	8,687	855,818	SH		SOLE		855,818	0	0
NETFIN ACQUISITION CORP	SHS CL A	G6455A107	12,060	1,225,605	SH		SOLE		1,225,605	0	0
NEW PROVIDENCE ACQUISITION	COM CL A	64822P106	6,637	679,355	SH		SOLE		679,355	0	0
NEWBORN ACQUISITION CORP	UNIT 99/99/9999	G6463T130	721	74,235	SH		SOLE		74,235	0	0
OAKTREE ACQUISITION CORP	*W EXP 99/99/999	G67145113	15	14,872	SH		SOLE		14,872	0	0
OAKTREE ACQUISITION CORP	SHS CL A	G67145105	745	74,361	SH		SOLE		74,361	0	0
OPES ACQUISITION CORP	*W EXP 03/13/202	68373P118	4	88,329	SH		SOLE		88,329	0	0
OPES ACQUISITION CORP	COM	68373P100	6,198	593,107	SH		SOLE		593,107	0	0
ORISUN ACQUISITION CORP	COM	68632T109	800	78,419	SH		SOLE		78,419	0	0
PIVOTAL INVT CORP II	*W EXP 06/01/202	72582K118	10	33,050	SH		SOLE		33,050	0	0
PIVOTAL INVT CORP II	COM CL A	72582K100	6,548	660,775	SH		SOLE		660,775	0	0
POPE RES DEL LTD PARTNERSHIP	DEPOSITRY RCPT	732857107	629	7,485	SH		SOLE		7,485	0	0
PROFICIENT ALPHA ACQUSTN COR	*W EXP 04/30/202	74317H113	5	99,220	SH		SOLE		99,220	0	0
PROFICIENT ALPHA ACQUSTN COR	COM	74317H105	6,132	608,291	SH		SOLE		608,291	0	0
PROFICIENT ALPHA ACQUSTN COR	RIGHT 04/30/2026	74317H121	20	99,220	SH		SOLE		99,220	0	0
PROPTECH ACQUISITION CORP	COM CL A	74349F101	1,433	147,750	SH		SOLE		147,750	0	0
PURE ACQUISITION CORP	*W EXP 04/17/202	74621Q114	241	243,144	SH		SOLE		243,144	0	0
PURE ACQUISITION CORP	CL A	74621Q106	20,778	1,999,844	SH		SOLE		1,999,844	0	0
RA PHARMACEUTICALS INC	COM	74933V108	3,025	63,000	SH	Put	SOLE		63,000	0	0
REPLAY ACQUISITION CORP	COM	G75130107	7,320	745,424	SH		SOLE		745,424	0	0
RMG ACQUISITION CORP	*W EXP 02/21/202	749641114	28	45,241	SH		SOLE		45,241	0	0
RMG ACQUISITION CORP	CL A	749641106	9,392	946,357	SH		SOLE		946,357	0	0
ROYAL DUTCH SHELL PLC	SPON ADR B	780259107	648	19,846	SH		SOLE		19,846	0	0
SC HEALTH CORP	COM CL A	G78516203	8,242	820,084	SH		SOLE		820,084	0	0
SCHULTZE SPL PURP ACQUSTN CO	COM	80821R109	7,644	755,380	SH		SOLE		755,380	0	0
SOFTWARE ACQUISITION GROUP I	COM CL A	83406B101	1,449	147,750	SH		SOLE		147,750	0	0
SPARTAN ENERGY ACQUISITION C	CL A COM STK	846784106	27,109	2,678,709	SH		SOLE		2,678,709	0	0
TENZING ACQUISITION CORP	ORD SHS	G8708A116	4,316	410,615	SH		SOLE		410,615	0	0
THUNDER BRDG ACQUISTION II L	CL A SHS	G8857S116	968	98,300	SH		SOLE		98,300	0	0
TORTOISE ACQUISITION CORP	*W EXP 03/04/202	89154L118	35	124,237	SH		SOLE		124,237	0	0
TORTOISE ACQUISITION CORP	CL A	89154L100	10,055	1,022,925	SH		SOLE		1,022,925	0	0
TOTTENHAM ACQUISITION I LTD	SHS	G8959N106	2,764	263,236	SH		SOLE		263,236	0	0
TRIDENT ACQUISITIONS CORP	COM	89615T106	6,782	626,761	SH		SOLE		626,761	0	0
TRINE ACQUISITION CORP	COM CL A	89628U108	12,083	1,215,622	SH		SOLE		1,215,622	0	0
UNION ACQUISITION CORP II	SHS	G9402Q100	1,927	197,000	SH		SOLE		197,000	0	0
UNITED TECHNOLOGIES CORP	COM	913017109	1,800	19,087	SH		SOLE		19,087	0	0
VECTOIQ ACQUISITION CORP	COM	92243N103	261	24,575	SH		SOLE		24,575	0	0
WEALTHBRIDGE ACQUISITION LTD	SHS	G4887W110	3,504	342,274	SH		SOLE		342,274	0	0
YUNHONG INTL	UNIT 99/99/9999	G98882114	1,416	149,073	SH		SOLE		149,073	0	0
WR BERKLEY CORP	COM	084423102	203,731	3,905,141	SH		SOLE		203,731	0	0
HARTFORD FINANCIAL SERVICES GROUP	CON	416515104	27,743	787,258	SH		SOLE		27,743	0	0
KRAFT HEINZ	COM	500754106	30,925	1,250,000	SH		SOLE		30,925	0	0
VISTA OUTDOOR INC	COM	928377100	17,611	2,001,286	SH		SOLE		17,611	0	0
EXXON MOBIL CORP	COM	30231G102	11,719	308,650	SH		SOLE		11,719	0	0
HEALTHEQUITY INC	COM	42226A107	1,356	26,794	SH		SOLE		1,356	0	0
NUTRIEN LTD	COM	67077M108	14,834	437,080	SH		SOLE		14,834	0	0
VERIZON COMMUNICATIONS INC	COM	92343V104	8,471	157,666	SH		SOLE		8,471	0	0
VISTEON CORP	COM	92839U206	12,802	266,827	SH		SOLE		12,802	0	0