BERKLEY W R CORP

Greenwich, CT · CIK 11544 · 13F filing filed 2026-08-14

No investment adviser registration (Form ADV) found for this filer. It may be a parent company whose subsidiaries are the registered advisers, a bank or insurer, or a manager based outside the US.

Legal entityW. R. BERKLEY CORPORATION (US)

$2.0bn reported value +9.5% vs Q1 2026

339positions

42.1%in top 10

85 new 59 added 55 reduced 91 sold out vs Q1 2026

Options: 0 call positions (— notional), 5 put positions ($137.4m notional) – listed below, not included above.

Holdings, Q2 2026

The small lines show how much was held over the last 4 quarters (adjusted for stock splits).

#	Security	Ticker	Shares	Value	% of portfolio	Change	Shares change
1	ENTERPRISE PRODS PARTNERS L COM EPD	EPD	6,825,000	$250.9m12.31%	12.31%	Unchanged
2	ENERGY TRANSFER L P COM UT LTD PTN ET	ET	8,250,000	$157.7m7.74%	7.74%	Unchanged
3	KINDER MORGAN INC DEL COM KMI	KMI	2,837,206	$90.7m4.45%	4.45%	Unchanged
4	PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN PAA	PAA	3,184,307	$70.9m3.48%	3.48%	Added +500.0k	+500,000 18.6%
5	ON SEMICONDUCTOR CORP COM ON	ON	731,118	$69.1m3.39%	3.39%	Unchanged
6	MICROSOFT CORP COM MSFT	MSFT	149,400	$55.7m2.73%	2.73%	New
7	WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT WES	WES	1,266,970	$55.4m2.72%	2.72%	Unchanged
8	PROGRESSIVE CORP COM PGR	PGR	207,589	$45.3m2.22%	2.22%	Unchanged
9	AGRICULTURE & NAT SOL ACQ CO SHS CL A SHS CL A		3,265,181	$37.1m1.82%	1.82%	Added +638.6k	+638,649 24.3%
10	NVIDIA CORPORATION COM NVDA	NVDA	124,800	$25.0m1.23%	1.23%	New
11	ROMAN DBDR ACQUISITION CORP ORD SHS CL A DRDB	DRDB	2,276,587	$24.0m1.18%	1.18%	Added +475.8k	+475,757 26.4%
12	TAIWAN SEMICONDUCTOR MFG LTD SPONSORED ADS TSM	TSM	49,700	$23.7m1.16%	1.16%	New
13	PFIZER INC COM PFE	PFE	965,537	$23.3m1.14%	1.14%	New
14	GLOBAL INDEMNITY GROUP LLC COM CL A GBLI	GBLI	919,661	$23.0m1.13%	1.13%	Unchanged
15	INFLECTION PT ACQUISITION CO CL A ORD SHS CL A ORD SHS		2,211,677	$22.8m1.12%	1.12%	Added +442.1k	+442,054 25.0%
16	TESLA INC COM TSLA	TSLA	50,000	$21.0m1.03%	1.03%	New
17	SILVERBOX CORP IV SHS CL A SBXDF	SBXDF	1,930,127	$20.9m1.02%	1.02%	Added +415.6k	+415,554 27.4%
18	EQV VENTURES AC CORP. II ORD SHS CL A EVAC	EVAC	1,880,883	$19.1m0.94%	0.94%	Added +29.4k	+29,408 1.6%
19	LAUNCH ONE ACQUISITION CORP SHS CLASS A LPAA	LPAA	1,675,043	$18.2m0.89%	0.89%	Added +187.9k	+187,918 12.6%
20	KOCHAV DEFENSE ACQUI CO SHS CL A KCHV	KCHV	1,690,352	$17.5m0.86%	0.86%	Unchanged
21	YORKVILLE ACQUISITION CORP. SHS CL A MCGA	MCGA	1,645,570	$16.8m0.82%	0.82%	Unchanged
22	GLOBA TERRA ACQUISITION COR CL A ORD SHS GTERA	GTERA	1,561,028	$16.1m0.79%	0.79%	Added +498.8k	+498,843 47.0%
23	M3BRIGADE ACQUISITION V CORP CL A VLOS	VLOS	1,429,725	$15.5m0.76%	0.76%	Added +466.1k	+466,050 48.4%
24	CANTOR EQUITY PARTNERS I INC SHS CL A CEPO	CEPO	1,444,647	$15.4m0.75%	0.75%	Added +222.2k	+222,210 18.2%
25	ST JOE CO COM JOE	JOE	209,542	$13.1m0.64%	0.64%	Unchanged
26	GIGCAPITAL8 CORP ORD CL A GIW	GIW	1,289,470	$13.0m0.64%	0.64%	Unchanged
27	BERTO ACQUISITION CORP ORD SHS TACO	TACO	1,225,999	$12.9m0.63%	0.63%	Reduced -596.6k	-596,599 -32.7%
28	ARMADA ACQUISITION CORP II COM CL A COM CL A		1,233,735	$12.9m0.63%	0.63%	Unchanged
29	CROWN RESV ACQUISITION CORP ORD SHS CL A CRAC	CRAC	1,217,433	$12.3m0.60%	0.60%	Added +765.7k	+765,710 169.5%
30	FACT II ACQUISITION CORP ORD SHS CL A FACT	FACT	1,153,140	$12.3m0.60%	0.60%	Added +827.7k	+827,695 254.3%
31	NEW PROVIDENCE ACQUISITION C USD CL A ORD SHS NPAC	NPAC	1,179,542	$12.2m0.60%	0.60%	Added +534.1k	+534,113 82.8%
32	AMAZON COM INC COM AMZN	AMZN	50,000	$11.9m0.58%	0.58%	New
33	K&F GROWTH ACQUISITION CORP SHS CL A KFII	KFII	1,124,156	$11.9m0.58%	0.58%	Added +49.3k	+49,301 4.6%
34	HENNESSY CAP INVT CORP VII ORD SHS CL A ONEN	ONEN	1,101,473	$11.5m0.56%	0.56%	Added +372.8k	+372,814 51.2%
35	QUARTZSEA ACQUISITION CORP ORD SHS QSEA	QSEA	1,094,190	$11.5m0.56%	0.56%	Added +688.6k	+688,641 169.8%
36	COPLEY ACQUISITION CORP ORD SHS CL A COPL	COPL	1,084,469	$11.3m0.55%	0.55%	Added +56.8k	+56,845 5.5%
37	MAYWOOD ACQUISITION CORP ORD SHS CL A ORD SHS CL A		1,060,952	$11.1m0.55%	0.55%	Added +79.9k	+79,856 8.1%
38	JACKSON ACQUISITION CO II COM SHS CL A JACS	JACS	927,836	$9.9m0.48%	0.48%	Added +497.5k	+497,474 115.6%
39	FG IMPERII ACQUISITION CORP ORD SHS CL A FGII	FGII	992,100	$9.9m0.48%	0.48%	Unchanged
40	CHARLTON ARIA ACQUISITION CO ORD SHS CL A CHAR	CHAR	878,975	$9.5m0.47%	0.47%	Unchanged
41	XSOLLA SPAC 1 USD CL A ORD SHS XSLL	XSLL	920,190	$9.1m0.45%	0.45%	Unchanged
42	LAUNCH TWO ACQUISITION CORP. ORD SHS CL A LPBB	LPBB	847,934	$9.1m0.45%	0.45%	Added +31.2k	+31,217 3.8%
43	QUANTUMSPHERE ACQUISITION CO ORD SHS QUMS	QUMS	881,402	$9.0m0.44%	0.44%	Added +372.9k	+372,862 73.3%
44	RF ACQUISITION CORP II SHS RFAI	RFAI	814,851	$9.0m0.44%	0.44%	Added +48.4k	+48,426 6.3%
45	SOULPOWER ACQUISITION CORP USD CL A ORD SHS SOUL	SOUL	866,764	$9.0m0.44%	0.44%	Unchanged
46	AMERICAN EXCEPTIONALISM ACQU ORD CL A AEXA	AEXA	747,779	$8.8m0.43%	0.43%	Added +326.6k	+326,620 77.5%
47	GIGCAPITAL9 CORP CL A GIX	GIX	882,431	$8.8m0.43%	0.43%	Unchanged
48	SIZZLE ACQUISITION CORP. II USD CL A ORD SHS SZZL	SZZL	843,448	$8.7m0.43%	0.43%	Added +446.7k	+446,680 112.6%
49	MELAR ACQUISITION CORP. I SHS CL A MACI	MACI	795,916	$8.7m0.43%	0.43%	Reduced -203.0k	-203,047 -20.3%
50	SIDDHI ACQUISITION CORP CL A SHS SDHI	SDHI	826,986	$8.6m0.42%	0.42%	Added +353.4k	+353,368 74.6%
51	PLUM ACQUISITION CORP IV SHS CL A PLMK	PLMK	805,592	$8.6m0.42%	0.42%	Added +1.4k	+1,400 0.2%
52	DYNAMIX CORP SHS CL A DYNC	DYNC	775,489	$8.4m0.41%	0.41%	Reduced -15.0k	-15,014 -1.9%
53	DIGITAL ASSET ACQUISITION CO SHS CL A DAAQ	DAAQ	792,787	$8.2m0.40%	0.40%	Added +31.5k	+31,456 4.1%
54	CANTOR EQUITY PARTNERS V INC SHS CL A S CEPV	CEPV	792,962	$8.2m0.40%	0.40%	Unchanged
55	TITAN ACQUISITION CORP CL A TACH	TACH	778,984	$8.1m0.40%	0.40%	Added +282.6k	+282,584 56.9%
56	PRAETORIAN ACQUISITION CORP ORD SHS CL A PTOR	PTOR	795,690	$7.9m0.39%	0.39%	Unchanged
57	SPACSPHERE ACQUISITION CORP CL A SHS SSAC	SSAC	768,983	$7.7m0.38%	0.38%	Added +195.6k	+195,633 34.1%
58	BLUE WTR ACQUISITION CORP. I ORD SHS CL A BLUW	BLUW	731,506	$7.5m0.37%	0.37%	Unchanged
59	ANDRETTI ACQUISITION CORP II ORD SHS CL A POLE	POLE	683,233	$7.3m0.36%	0.36%	Added +220.7k	+220,738 47.7%
60	PROCAP ACQUISITION CORP SHS CL A PCAP	PCAP	700,182	$7.2m0.35%	0.35%	Added +272.4k	+272,445 63.7%
61	LAKESHORE ACQUISITION III CO USD ORD SHS LCCC	LCCC	687,425	$7.2m0.35%	0.35%	Added +376.6k	+376,629 121.2%
62	DUNE ACQUISITION CORP II SHS CL A CCAQ	CCAQ	683,778	$7.1m0.35%	0.35%	Added +34.8k	+34,818 5.4%
63	VERIZON COMMUNICATIONS INC COM VZ	VZ	157,666	$6.7m0.33%	0.33%	Unchanged
64	CHENGHE ACQUISITION III CO ORD SHS CL A CHEC	CHEC	643,849	$6.5m0.32%	0.32%	Added +73.2k	+73,239 12.8%
65	LAFAYETTE DIGITAL ACQUISITIO ORD CLASS A ZKP	ZKP	646,456	$6.5m0.32%	0.32%	Unchanged
66	TAVIA ACQUISITION CORP SHS TAVI	TAVI	548,331	$6.0m0.30%	0.30%	Added +331.5k	+331,470 152.8%
67	K2 CAP ACQUISITION CORP ORD SHS CL A KTWO	KTWO	596,880	$5.9m0.29%	0.29%	Unchanged
68	XFLH CAP CORP ORD SHS XFLH	XFLH	571,683	$5.7m0.28%	0.28%	Unchanged
69	OCEAN CAP ACQUISITION CORP UNIT 99/99/9999 OCAC.U	OCAC.U	556,013	$5.7m0.28%	0.28%	New
70	ALDEL FINL II INC CL A ALDF	ALDF	523,423	$5.6m0.27%	0.27%	Added +48.7k	+48,713 10.3%
71	BREEZE ACQUISITION CORP II ORD SHS BREZ	BREZ	557,070	$5.5m0.27%	0.27%	New
72	CAYSON ACQUISITION CORP SHS CAPN	CAPN	497,282	$5.5m0.27%	0.27%	Unchanged
73	BOLD EAGLE ACQUISITION CORP CL A BEAG	BEAG	508,724	$5.4m0.27%	0.27%	Unchanged
74	COHEN CIRCLE ACQUISIT CORP I SHS CL A CCII	CCII	525,621	$5.4m0.27%	0.27%	Unchanged
75	GP-ACT III ACQUISITION CORP CL A GPAT	GPAT	497,064	$5.4m0.27%	0.27%	Reduced -349.8k	-349,759 -41.3%
76	SUMA ACQUISITION CORP USD CL A ORD SHS SUMA	SUMA	546,810	$5.4m0.26%	0.26%	New
77	FUTURE MONEY ACQUISITION COR ORD SHS FMAC	FMAC	540,732	$5.4m0.26%	0.26%	New
78	THAYER VENTURES ACQ CORP II CL A TVAI	TVAI	518,020	$5.4m0.26%	0.26%	Added +54.6k	+54,629 11.8%
79	RANGE CAP ACQUISITION CORP ORD SHS RANG	RANG	497,293	$5.3m0.26%	0.26%	Reduced -79.8k	-79,788 -13.8%
80	GENERAL PURP ACQUISITION COR USD CL A ORD SHS GPAC	GPAC	518,564	$5.2m0.25%	0.25%	Unchanged
81	GORES HLDGS X INC SHS CL A GTEN	GTEN	492,370	$5.1m0.25%	0.25%	Unchanged
82	FLAG SHIP ACQUISITION CORP ORD SHS FSHP	FSHP	449,489	$5.0m0.24%	0.24%	Added +15.1k	+15,069 3.5%
83	QUANTUM LEAP ACQUISITION COR CL A ORD SHS QLEP	QLEP	496,600	$4.9m0.24%	0.24%	New
84	CLEARTHINK 1 ACQUISITION COR ORD SHS CL A CTAA	CTAA	497,000	$4.9m0.24%	0.24%	New
85	OYSTER ENTERPRISES II ACQUIS ORD SHS CL A OYSE	OYSE	475,872	$4.9m0.24%	0.24%	Unchanged
86	NMP ACQUISITION CORP CL A NMP	NMP	470,664	$4.8m0.24%	0.24%	Added +25.4k	+25,360 5.7%
87	WINTERGREEN ACQUISITION CORP SHS WTG	WTG	460,136	$4.8m0.23%	0.23%	Added +33.0k	+33,025 7.7%
88	OCEANHAWK ACQUISITION CORP CL A ORD SHS OHAC	OHAC	472,530	$4.7m0.23%	0.23%	New
89	TGE VALUE CREATIVE SOLUTIONS USD CL A ORD SHS BEBE	BEBE	447,006	$4.5m0.22%	0.22%	Unchanged
90	MOUNTAIN LAKE ACQUISIT CORP USD CL A ORD SHS MLAA	MLAA	447,794	$4.4m0.22%	0.22%	Unchanged
91	ALDABRA 4 LQDTY OPP VEH INC CL A ORD SHS ALOV	ALOV	446,445	$4.4m0.22%	0.22%	Unchanged
92	SHREYA ACQUISITION GROUP ORD CL A SAGU	SAGU	447,352	$4.4m0.22%	0.22%	New
93	UY SCUTI ACQUISITION CORP. ORD SHS UYSC	UYSC	407,586	$4.4m0.21%	0.21%	Unchanged
94	OXLEY BRIDGE ACQ LTD USD CL A ORD SHS OBA	OBA	424,660	$4.3m0.21%	0.21%	Unchanged
95	SILVER PEGASUS ACQUISITION C SHS CL A SPEG	SPEG	415,865	$4.3m0.21%	0.21%	Unchanged
96	RENATUS TACTICAL ACQUIS SHS CL A RTAC	RTAC	403,883	$4.2m0.21%	0.21%	Unchanged
97	EGH ACQUISITION CORP. SHS CL A EGHA	EGHA	409,369	$4.2m0.21%	0.21%	Added +302.3k	+302,332 282.5%
98	CAMBRIDGE ACQUISITION CORP USD CL A ORD SHS CAQ	CAQ	424,998	$4.2m0.21%	0.21%	Unchanged
99	UNITED ACQUISITION CORP I ORD SHS CL A UAC	UAC	422,792	$4.2m0.21%	0.21%	Unchanged
100	ARTIUS II ACQUISITION INC SHS CL A SHS CL A		396,960	$4.2m0.20%	0.20%	Unchanged

Sold out since Q1 2026

Security	Ticker	Shares held before	Value then
HAYMAKER ACQUISITION CORP IV 2680812D	2680812D	2,321,633	$26.7m2.3m shares
CANTOR EQUITY PARTNERS III I CAEP	CAEP	2,229,948	$23.0m2.2m shares
MOUNTAIN LAKE ACQUISITION CO		1,877,833	$19.8m1.9m shares
GIGCAPITAL7 CORP HDRN	HDRN	1,735,682	$18.5m1.7m shares
LEGATO MERGER CORP III		1,466,215	$16.1m1.5m shares
VOYAGER ACQUISITION CORP		1,303,583	$13.9m1.3m shares
CENTURION ACQUISITION CORP ALF	ALF	1,157,544	$12.5m1.2m shares
SIM ACQUISITION CORP. I SIMA	SIMA	912,286	$9.8m912.3k shares
VINE HILL CAP INVT CORP.		661,663	$7.1m661.7k shares
LIVE OAK ACQUISITION CORP V TMS	TMS	647,661	$6.7m647.7k shares
SUMA ACQUISITION CORP SUMAU	SUMAU	546,810	$5.5m546.8k shares
FUTURE MONEY ACQUISITION COR FMACU	FMACU	540,732	$5.4m540.7k shares
CLEARTHINK 1 ACQUISITION COR CTAAU	CTAAU	497,000	$5.0m497.0k shares
BLUE ACQUISITION CORP. BACC	BACC	441,650	$4.5m441.6k shares
BEST SPAC I ACQUISITION CORP BSAA	BSAA	437,808	$4.5m437.8k shares
CARTESIAN GROWTH CORP III FAC	FAC	393,552	$4.0m393.6k shares
FUTURE VISION II ACQUISITION FVN	FVN	371,104	$4.0m371.1k shares
PROEM ACQUISITION CORP I PAACU	PAACU	397,720	$4.0m397.7k shares
TRG LATIN AMER ACQUIS CORP TRGSU	TRGSU	397,600	$4.0m397.6k shares
ILLUMINATION ACQUISITIO CORP ILLUU	ILLUU	323,050	$3.2m323.1k shares
A PARADISE ACQUISITION CORP ENHA	ENHA	306,725	$3.1m306.7k shares
KENSINGTON CAP ACQUIST CORP KCAC.U	KCAC.U	298,232	$3.0m298.2k shares
PONO CAP FOUR INC PONOU	PONOU	298,260	$3.0m298.3k shares
APEX TECH ACQUISITION INC TRAD.U	TRAD.U	248,500	$2.5m248.5k shares
GALAXYEDGE ACQUISITION CORP GLED.U	GLED.U	248,525	$2.5m248.5k shares

Options (notional value)

Underlying	Ticker	Type	Shares controlled	Notional	Change
MICROSOFT CORP MSFT · Put	MSFT	Put	149,400	$55.7m149.4k shares	New
NVIDIA CORPORATION NVDA · Put	NVDA	Put	124,800	$25.0m124.8k shares	New
TAIWAN SEMICONDUCTOR MFG LTD TSM · Put	TSM	Put	49,700	$23.7m49.7k shares	New
TESLA INC TSLA · Put	TSLA	Put	50,000	$21.0m50.0k shares	New
AMAZON COM INC AMZN · Put	AMZN	Put	50,000	$11.9m50.0k shares	New

Stakes above 5%

Companies where this manager has reported owning more than 5% of a class of shares, on Schedule 13D (may seek influence) or 13G (passive): its latest filing for each, from 19 Dec 2024 on. The largest 25 of 34.

Company	Ticker	Stake	Change	Schedule	Last filed
ROMAN DBDR ACQUISITION CORP DRDB · 13G · filed 2026-08-05	DRDB	9.9%≈ $24.0m	+2.1 pts	13G	2026-08-05
AGRICULTURE & NAT SOL ACQ CO 13G · filed 2026-08-05		9.9%≈ $37.3m	+1.9 pts	13G	2026-08-05
CHARLTON ARIA ACQUISITION CO CHAR · 13G · filed 2026-05-07	CHAR	9.9%≈ $9.5m	+1.6 pts	13G	2026-05-07
SILVERBOX CORP IV SBXDF · 13G · filed 2026-08-06	SBXDF	9.4%≈ $20.8m	+2.0 pts	13G	2026-08-06
CAYSON ACQUISITION CORP CAPN · 13G · filed 2026-05-07	CAPN	9.4%≈ $6.0m	-1.0 pts	13G	2026-05-07
RF ACQUISITION CORP II RFAI · 13G · filed 2026-05-08	RFAI	9.2%≈ $3.9m	+5.6 pts	13G	2026-05-08
YORKVILLE ACQUISITION CORP. MCGA · 13G · filed 2026-05-08	MCGA	9.2%≈ $16.8m	new	13G	2026-05-08
OAK WOODS ACQUISITION CORP OAKU · 13G · filed 2026-02-11	OAKU	9.2%		13G	2026-02-11
MAYWOOD ACQUISITION CORP 13G · filed 2026-05-08		9.0%≈ $10.3m	+0.5 pts	13G	2026-05-08
QUARTZSEA ACQUISITION CORP QSEA · 13G · filed 2026-08-06	QSEA	8.9%≈ $9.5m	new	13G	2026-08-06
GLOBA TERRA ACQUISITION COR GTERA · 13G · filed 2026-08-06	GTERA	8.7%≈ $16.1m	+2.8 pts	13G	2026-08-06
MELAR ACQUISITION CORP. I MACI · 13G · filed 2026-08-06	MACI	8.3%≈ $8.7m	+2.9 pts	13G	2026-08-06
PANTAGES CAPITAL ACQUISITION PGAC · 13G · filed 2026-08-06	PGAC	8.3%≈ $2.6m	-1.6 pts	13G	2026-08-06
RIBBON ACQUISITION CORP RIBB · 13G · filed 2026-05-08	RIBB	7.9%≈ $3.2m		13G	2026-05-08
UY SCUTI ACQUISITION CORP. UYSC · 13G · filed 2026-08-06	UYSC	7.8%≈ $4.4m	+2.5 pts	13G	2026-08-06
YHN ACQUISITION I LTD YHNA · 13G · filed 2026-02-11	YHNA	7.8%≈ $3.7m	-0.9 pts	13G	2026-02-11
LAKESHORE ACQUISITION III CO LCCC · 13G · filed 2026-08-06	LCCC	7.7%≈ $3.4m	new	13G	2026-08-06
QUANTUMSPHERE ACQUISITION CO QUMS · 13G · filed 2026-08-06	QUMS	7.7%≈ $9.0m	new	13G	2026-08-06
KEEN VISION ACQUISITION CORP KVACF · 13G · filed 2025-11-10	KVACF	7.7%≈ $4.8m	-2.0 pts	13G	2025-11-10
RANGE CAP ACQUISITION CORP RANG · 13G · filed 2026-08-06	RANG	7.4%≈ $5.3m	new	13G	2026-08-06
BLACK HAWK ACQUISITION CORP BKHA · 13G · filed 2025-11-10	BKHA	7.4%≈ $3.7m	+2.2 pts	13G	2025-11-10
EQV VENTURES ACQUISITION COR FTW · 13G · filed 2026-02-10	FTW	7.2%	new	13G	2026-02-10
CANTOR EQUITY PARTNERS I INC CEPO · 13G · filed 2026-08-05	CEPO	7.0%≈ $12.8m	+1.0 pts	13G	2026-08-05
CROWN RESV ACQUISITION CORP CRAC · 13G · filed 2026-08-05	CRAC	6.7%≈ $12.3m	new	13G	2026-08-05
KOCHAV DEFENSE ACQUI CO KCHV · 13G · filed 2026-05-08	KCHV	6.5%≈ $17.5m	no change	13G	2026-05-08