BERKLEY W R CORP

CIK

11544

Location

Greenwich, CT

Portfolio Value

Mid $1,434,338,512

Diversification

Diversified

Filing Date

Global Rank

#1,430 / 7,976 ▼ 120

Top Industry

Oil & Gas Midstream 32.2%

3Y Alpha vs SPY

-7.1%

Period ended 9 months ago

Filed Nov 14, 2025 · 7mo

23 quarters · since Mar 2020

Clone Performance

Jun 2023–Jun 2026 · vs SPY

Hypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.

Cloned portfolio

+46.9%

SPY

+76.3%

Annualised alpha

-7.1%

Max drawdown

−21.0%

Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.

Portfolio Concentration

121 positions · as of Sep 30, 2025 · Δ vs Jun 30, 2025

Top Position

13.1%

+0.6 pts

Top 5

45.1%

+2.3 pts

Top 10

59.6%

+1.1 pts

HHI

526

Diversified+39

Portfolio Trend

23 quarters · across all stocks

Sector Breakdown

As of Sep 30, 2025

Sector	% Portfolio	Value	Positions
Financial Services	33.7%	$483,010,400	100
Energy	32.6%	$467,533,916	6
Consumer Cyclical	21.1%	$302,329,314	3
Technology	8.7%	$124,768,668	3
Basic Materials	1.8%	$25,660,966	1
Real Estate	0.7%	$10,368,138	1
Communication Services	0.5%	$6,978,040	2
Unclassified	0.5%	$6,581,452	3
Industrials	0.4%	$6,125,836	1
Consumer Defensive	0.1%	$981,782	1

Last Quarter's Activity

Export CSV

Sep 30, 2025 vs Jun 30, 2025

Added To

Positions the filer increased

25 positions

Ticker	Company	Δ Shares	Shares	Value
HYAC	Haymaker Acquisition Corp. 4	+1,498,590	1,680,012	$19,051,336
ET	Energy Transfer LP	+915,506	7,250,000	$124,410,000
EPD	Enterprise Products Partners L.P.	+910,206	6,000,000	$187,620,000
LPAA	Launch One Acquisition Corp.	+596,408	912,609	$9,582,394
MBAV	M3-Brigade Acquisition V Corp.	+328,492	449,128	$4,738,300
MACI	Melar Acquisition Corp. I/Cayman	+322,372	645,820	$6,781,110
IPEX	Inflection Point Acquisition Corp. V	+322,092	757,946	$7,761,367
CHAR	Charlton Aria Acquisition Corp	+299,099	735,326	$7,617,977
DYNC	Dynamix Corp	+268,610	341,800	$3,558,138
AMZN	Amazon Com Inc	+268,400	755,800	$165,951,006
PGAC	PANTAGES CAPITAL ACQUISITION Corp	+198,830	532,089	$5,459,233
RFAI	RF Acquisition Corp II	+183,030	937,845	$10,072,455
PELI	Pelican Acquisition Corp	+165,054	517,961	$5,210,687
QSEA	Quartzsea Acquisition Corp	+139,365	288,603	$2,923,548
OACC	Oaktree Acquisition Corp. III Life Sciences	+124,315	223,645	$2,350,508
ASPC	ASPAC III Acquisition Corp.	+99,579	615,149	$6,360,640
FVN	Future Vision II Acquisition Corp.	+89,510	227,373	$2,378,321
FTW	PRESIDIO PRODUCTION Co	+53,716	718,183	$7,454,739
LEGT	Legato Merger Corp. III	+50,069	199,033	$2,137,614
XRPN	Armada Acquisition Corp. II	+49,770	340,390	$3,551,629
HSPT	Horizon Space Acquisition II Corp.	+47,957	722,303	$7,483,059
AFJK	Aimei Health Technology Co., Ltd.	+25,294	450,655	$5,101,414
RIBB	Ribbon Acquisition Corp.	+24,927	462,604	$4,737,064
COLA	Columbus Acquisition Corp/Cayman Islands	+24,874	404,653	$4,139,600
VACH	Voyager Acquisition Corp./Cayman Islands	+18,571	1,232,963	$12,941,179
No positions match the current search.

Trimmed

Positions the filer reduced

10 positions

Ticker	Company	Δ Shares	Shares	Value
KMI	Kinder Morgan, Inc.	−3,787,794	2,837,206	$80,321,301
KVAC	Keen Vision Acquisition Corp.	−332,153	714,015	$8,218,312
FSHP	Flag Ship Acquisition Corp	−257,893	400,938	$4,269,989
NVDA	Nvidia Corp	−198,600	199,000	$37,129,420
GOOGL	Alphabet Inc.	−181,400	200	$48,620
BKHA	Black Hawk Acquisition Corp	−153,912	308,584	$3,429,911
TVA	Texas Ventures Acquisition III Corp	−148,833	291,709	$3,124,203
WLAC	Willow Lane Acquisition Corp.	−123,329	69,417	$803,848
RTAC	Renatus Tactical Acquisition Corp I	−27,924	170,508	$1,860,242
GTEN	Gores Holdings X, Inc. / CI	−3,530	492,370	$5,027,097
No positions match the current search.

New Positions

Positions the filer opened this quarter

25 positions

Ticker	Company	Shares	Value
TSLA	Tesla, Inc.	198,800	$88,410,336
MSFT	Microsoft Corp	99,600	$51,587,820
WES	Western Midstream Partners, LP	887,163	$34,856,634
PAA	Plains All American Pipeline LP	1,926,802	$32,871,242
EVAC	EQV Ventures Acquisition Corp. II	1,771,842	$17,629,827
KCHV	Kochav Defense Acquisition Corp.	1,457,013	$14,613,840
BACC	Blue Acquisition Corp/Cayman	542,059	$5,417,879
CCII	Cohen Circle Acquisition Corp. II	520,912	$5,287,256
OYSE	Oyster Enterprises II Acquisition Corp	475,872	$4,769,189
NMP	NMP Acquisition Corp.	445,304	$4,421,868
SPEG	Silver Pegasus Acquisition Corp.	415,865	$4,146,174
KOYN	CSLM Digital Asset Acquisition Corp III, Ltd	396,106	$3,931,352
AEXA	American Exceptionalism Acquisition Corp. A	348,145	$3,805,224
FGMC	FG Merger II Corp.	316,028	$3,157,435
WTG	Wintergreen Acquisition Corp.	296,504	$2,982,830
HCMA	Hcm III Acquisition Corp.	265,299	$2,680,846
JENA	JENA ACQUISITION Corp II	247,850	$2,515,677
LWAC	LightWave Acquisition Corp.	223,178	$2,220,621
BCAR	D. Boral ARC Acquisition I Corp.	223,168	$2,216,058
AXIN	Axiom Intelligence Acquisition Corp 1	198,300	$1,975,068
EGHA	EGH Acquisition Corp.	148,800	$1,489,488
INAC	Indigo Acquisition Corp.	148,815	$1,483,685
FIGX	FIGX Capital Acquisition Corp.	114,092	$1,139,779
SOCA	Solarius Capital Acquisition Corp.	99,230	$988,330
ENHA	Enhanced Group Inc.	99,190	$981,782
No positions match the current search.

Sold Out

Positions the filer fully exited

18 positions

Ticker	Company	Shares	Value
CRM	Salesforce, Inc.	338,200	$92,223,758
AXP	American Express Co	198,800	$63,413,224
CSCO	Cisco Systems, Inc.	596,600	$41,392,108
AAPL	Apple Inc.	198,800	$40,787,796
RRC	Range Resources Corp	696,000	$28,306,320
MDT	Medtronic plc	281,000	$24,494,770
NKE	NIKE, Inc.	263,400	$18,711,936
INTC	Intel Corp	759,958	$17,023,059
PEG	Public Service Enterprise Group Inc	198,800	$16,734,984
NXPI	NXP Semiconductors N.V.	55,000	$12,016,950
SPKL	Spark I Acquisition Corp	983,347	$10,718,482
BDX	Becton Dickinson & Co	63,600	$8,612,502
XEL	Xcel Energy Inc	123,600	$8,417,160
VICI	Vici Properties Inc.	208,800	$6,806,880
STT	State Street Corp	51,400	$5,465,876
UCFI	CN Healthy Food Tech Group Corp.	398,551	$4,115,039
BBY	Best Buy Co Inc	37,000	$2,483,810
META	Meta Platforms, Inc.	600	$442,854
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

121 positions · $1,434,338,512 total · as of Sep 30, 2025

All sectors Basic Materials Communication Services Consumer Cyclical Consumer Defensive Energy Financial Services Industrials Real Estate Technology

Showing 1–50 of 121 positions by value · page 1 of 3

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
GOOGL	Alphabet Inc. Communication Services	Reduced	200	-181,400	$48,620	−99.8%	0.00%
PCSC	Perceptive Capital Solutions Corp Financial Services	Held	15,913	0	$168,677	−0.2%	0.01%
CCIX	Churchill Capital Corp IX/Cayman Financial Services	Added	39,976	+12,631	$418,948	+45.6%	0.03%
NOEM	CO2 Energy Transition Corp. Financial Services	Added	59,823	+184	$610,194	+1.6%	0.04%
ONCH	1RT Acquisition Corp. Financial Services	NEW	74,416	NEW	$777,647	NEW	0.05%
WLAC	Willow Lane Acquisition Corp. Financial Services	Reduced	69,417	-123,329	$803,848	−59.2%	0.06%
MCGA	Yorkville Acquisition Corp. Financial Services	NEW	80,183	NEW	$854,750	NEW	0.06%
ENHA	Enhanced Group Inc. Consumer Defensive	NEW	99,190	NEW	$981,782	NEW	0.07%
SOCA	Solarius Capital Acquisition Corp. Financial Services	NEW	99,230	NEW	$988,330	NEW	0.07%
TACO	Berto Acquisition Corp. Financial Services	Held	99,220	0	$1,031,888	−0.2%	0.07%
NTWO	Newbury Street II Acquisition Corp Financial Services	Held	100,000	0	$1,036,000	+0.7%	0.07%
FIGX	FIGX Capital Acquisition Corp. Financial Services	NEW	114,092	NEW	$1,139,779	NEW	0.08%
LOKV	Live Oak Acquisition Corp. V Financial Services	Held	124,250	0	$1,267,350	−4.7%	0.09%
CAEP	Cantor Equity Partners III, Inc. Financial Services	Held	124,275	0	$1,282,518	−2.2%	0.09%
INAC	Indigo Acquisition Corp. Financial Services	NEW	148,815	NEW	$1,483,685	NEW	0.10%
EGHA	EGH Acquisition Corp. Financial Services	NEW	148,800	NEW	$1,489,488	NEW	0.10%
GSHR	Gesher Acquisition Corp. II Financial Services	Held	163,796	0	$1,662,529	0.0%	0.12%
LCCC	Lakeshore Acquisition III Corp. Financial Services	Held	175,560	0	$1,769,644	+0.6%	0.12%
NHIC	NewHold Investment Corp. III	Held	173,950	0	$1,770,811	+0.1%	0.12%
CEPO	Cantor Equity Partners I, Inc. Financial Services	Added	170,994	+7,096	$1,788,597	−8.3%	0.12%
TDAC	Translational Development Acquisition Corp. Financial Services	Held	173,530	0	$1,796,035	+0.8%	0.13%
RTAC	Renatus Tactical Acquisition Corp I Financial Services	Reduced	170,508	-27,924	$1,860,242	−20.6%	0.13%
AXIN	Axiom Intelligence Acquisition Corp 1 Financial Services	NEW	198,300	NEW	$1,975,068	NEW	0.14%
FERA	Fifth Era Acquisition Corp I Financial Services	Held	198,800	0	$2,021,796	+0.2%	0.14%
CHPG	ChampionsGate Acquisition Corp Financial Services	Held	209,151	0	$2,106,150	+0.7%	0.15%
LEGT	Legato Merger Corp. III Financial Services	Added	199,033	+50,069	$2,137,614	+34.4%	0.15%
TAVI	Tavia Acquisition Corp. Financial Services	Held	211,118	0	$2,182,960	+0.9%	0.15%
BCAR	D. Boral ARC Acquisition I Corp. Financial Services	NEW	223,168	NEW	$2,216,058	NEW	0.15%
LWAC	LightWave Acquisition Corp. Financial Services	NEW	223,178	NEW	$2,220,621	NEW	0.15%
MLAC	Mountain Lake Acquisition Corp.	Held	218,060	0	$2,246,018	+0.4%	0.16%
SDHI	Siddhi Acquisition Corp (Cayman Islands) Financial Services	Held	224,124	0	$2,274,858	+0.4%	0.16%
ATII	Archimedes Tech SPAC Partners II Co. Financial Services	Held	228,206	0	$2,329,983	−0.2%	0.16%
OACC	Oaktree Acquisition Corp. III Life Sciences Financial Services	Added	223,645	+124,315	$2,350,508	+126.4%	0.16%
ALF	Centurion Acquisition Corp. Financial Services	Held	223,961	0	$2,362,788	+0.3%	0.16%
FVN	Future Vision II Acquisition Corp. Financial Services	Added	227,373	+89,510	$2,378,321	+65.6%	0.17%
TBMC	Trailblazer Merger Corp I Financial Services	Held	205,817	0	$2,404,271	−0.2%	0.17%
RDAC	Rising Dragon Acquisition Corp. Financial Services	Added	234,708	+5,002	$2,443,310	+3.3%	0.17%
SOUL	Soulpower Acquisition Corp. Financial Services	Held	247,850	0	$2,501,054	+0.5%	0.17%
JENA	JENA ACQUISITION Corp II Financial Services	NEW	247,850	NEW	$2,515,677	NEW	0.18%
FACT	FACT II Acquisition Corp.	Held	248,510	0	$2,564,623	+0.3%	0.18%
CEPT	Cantor Equity Partners II, Inc. Financial Services	Held	247,603	0	$2,602,307	−4.7%	0.18%
GRAF	Graf Global Corp. Financial Services	Held	248,226	0	$2,616,302	+0.8%	0.18%
HCMA	Hcm III Acquisition Corp. Financial Services	NEW	265,299	NEW	$2,680,846	NEW	0.19%
DRDB	Roman DBDR Acquisition Corp. II Financial Services	Held	267,634	0	$2,761,715	+0.1%	0.19%
QSEA	Quartzsea Acquisition Corp Financial Services	Added	288,603	+139,365	$2,923,548	+95.0%	0.20%
WTG	Wintergreen Acquisition Corp. Financial Services	NEW	296,504	NEW	$2,982,830	NEW	0.21%
RDAG	Republic Digital Acquisition Co Financial Services	Held	297,570	0	$3,038,189	−0.5%	0.21%
RAC	Rithm Acquisition Corp. Financial Services	Held	298,200	0	$3,056,550	+0.6%	0.21%
TVA	Texas Ventures Acquisition III Corp Financial Services	Reduced	291,709	-148,833	$3,124,203	−29.7%	0.22%
FGMC	FG Merger II Corp. Financial Services	NEW	316,028	NEW	$3,157,435	NEW	0.22%