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Super Investors / BERKLEY W R CORP
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BERKLEY W R CORP

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$2.18B
Positions
344
Quarter ended
June 30, 2026
Filed
August 24, 2026

Reported portfolio value by quarter (48 quarters reported)

$2.52B $232M
Q3 14 Q1 17 Q3 19 Q1 22 Q3 24 Q2 26

$232M in Q3 2014 → $2.18B now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
EP Enterprise Prods Partners L 11.5% Unchanged 6,825,000 $251M
ET Energy Transfer L P 7.2% Unchanged 8,250,000 $158M
KM Kinder Morgan Inc Del 4.2% Unchanged 2,837,206 $90.7M
PA Plains All Amern Pipeline L 3.3% Added 19% 3,184,307 $70.9M
On Semiconductor Corp 3.2% Unchanged 731,118 $69.1M
Microsoft Corp Put 2.6% New 149,400 $55.7M
Microsoft Corp 2.6% New 149,400 $55.7M
WM Western Midstream Partners 2.5% Unchanged 1,266,970 $55.4M
Progressive Corp 2.1% Unchanged 207,589 $45.3M
A& Agriculture & Nat Sol Acq Co 1.7% Added 24% 3,265,181 $37.1M
Nvidia Corporation Put 1.1% New 124,800 $25M
Nvidia Corporation 1.1% New 124,800 $25M
RD Roman Dbdr Acquisition Corp 1.1% Added 26% 2,276,587 $24M
TS Taiwan Semiconductor Manufac Put 1.1% New 49,700 $23.7M
TS Taiwan Semiconductor Manufac 1.1% New 49,700 $23.7M
Pfizer Inc 1.1% New 965,537 $23.3M
Global Indemnity Group LLC 1.1% Unchanged 919,661 $23M
IP Inflection Pt Acquisition Co 1.0% Added 25% 2,211,677 $22.8M
Tesla Inc Put 1.0% New 50,000 $21M
Tesla Inc 1.0% New 50,000 $21M
Silverbox Corp Iv 1.0% Added 27% 1,930,127 $20.9M
EV Eqv Ventures Ac Corp. Ii 0.9% Added 1.6% 1,880,883 $19.1M
Launch One Acquisition Corp 0.8% Added 13% 1,675,043 $18.2M
KD Kochav Defense Acqui Co 0.8% Unchanged 1,690,352 $17.5M
Yorkville Acquisition Corp. 0.8% Unchanged 1,645,570 $16.8M
GT Globa Terra Acquisition Cor 0.7% Added 47% 1,561,028 $16.1M
MA M3brigade Acquisition V Corp 0.7% Added 48% 1,429,725 $15.5M
Cantor Equity Partners I Inc 0.7% Added 18% 1,444,647 $15.4M
St Joe Co 0.6% Unchanged 209,542 $13.1M
Gigcapital8 Corp 0.6% Unchanged 1,289,470 $13M
Berto Acquisition Corp 0.6% Trimmed 33% 1,225,999 $12.9M
Armada Acquisition Corp Ii 0.6% Unchanged 1,233,735 $12.9M
CR Crown Resv Acquisition Corp 0.6% Added 170% 1,217,433 $12.3M
Fact Ii Acquisition Corp 0.6% Added 254% 1,153,140 $12.3M
NP New Providence Acquisition C 0.6% Added 83% 1,179,542 $12.2M
Amazon Com Inc Put 0.5% New 50,000 $11.9M
Amazon Com Inc 0.5% New 50,000 $11.9M
KG K&F Growth Acquisition Corp 0.5% Added 4.6% 1,124,156 $11.9M
HC Hennessy Cap Invt Corp Vii 0.5% Added 51% 1,101,473 $11.5M
Quartzsea Acquisition Corp 0.5% Added 170% 1,094,190 $11.5M
Copley Acquisition Corp 0.5% Added 5.5% 1,084,469 $11.3M
IP Inflection Point Acqu Corp V 0.5% Added 8.1% 1,060,952 $11.1M
Jackson Acquisition Co Ii 0.5% Added 116% 927,836 $9.87M
Fg Imperii Acquisition Corp 0.5% Unchanged 992,100 $9.85M
Charlton Aria Acquisition Co 0.4% Unchanged 878,975 $9.49M
Xsolla Spac 1 0.4% Unchanged 920,190 $9.14M
LT Launch Two Acquisition Corp. 0.4% Added 3.8% 847,934 $9.09M
Quantumsphere Acquisition Co 0.4% Added 73% 881,402 $9.01M
Rf Acquisition Corp Ii 0.4% Added 6.3% 814,851 $8.98M
Soulpower Acquisition Corp 0.4% Unchanged 866,764 $8.97M
AE American Exceptionalism Acqu 0.4% Added 78% 747,779 $8.84M
Gigcapital9 Corp 0.4% Unchanged 882,431 $8.78M
Sizzle Acquisition Corp. Ii 0.4% Added 113% 843,448 $8.74M
MA Melar Acquisition Corp. I 0.4% Trimmed 20% 795,916 $8.71M
Siddhi Acquisition Corp 0.4% Added 75% 826,986 $8.6M
Plum Acquisition Corp Iv 0.4% Added 0.2% 805,592 $8.59M
Dynamix Corp 0.4% Trimmed 1.9% 775,489 $8.37M
Digital Asset Acquisition Co 0.4% Added 4.1% 792,787 $8.23M
Cantor Equity Partners V Inc 0.4% Unchanged 792,962 $8.18M
Titan Acquisition Corp 0.4% Added 57% 778,984 $8.11M

Showing top 60 of 344 positions.

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 24, 2026

Company Action Shares changed Value of change % of portfolio
Microsoft Corp New +149,400 +$55.7M 2.6%
Microsoft Corp New +149,400 +$55.7M 2.6%
HA Haymaker Acquisition Corp Iv Exited −2,321,633 −$26.7M
Nvidia Corporation New +124,800 +$25M 1.1%
Nvidia Corporation New +124,800 +$25M 1.1%
TS Taiwan Semiconductor Manufac New +49,700 +$23.7M 1.1%
TS Taiwan Semiconductor Manufac New +49,700 +$23.7M 1.1%
Pfizer Inc New +965,537 +$23.3M 1.1%
CE Cantor Equity Partners Iii I Exited −2,229,948 −$23M
Tesla Inc New +50,000 +$21M 1.0%

Showing the 10 largest of 295 changes.

Q1 2026

quarter ended March 31, 2026 · filed May 15, 2026

Company Action Shares changed Value of change % of portfolio
Nvidia Corporation Exited −443,100 −$82.6M
Nvidia Corporation Exited −443,100 −$82.6M
Microsoft Corp Exited −152,600 −$73.8M
Microsoft Corp Exited −152,600 −$73.8M
Alphabet Inc Exited −219,400 −$68.7M
Alphabet Inc Exited −219,400 −$68.7M
Tesla Inc Exited −133,300 −$59.9M
Tesla Inc Exited −133,300 −$59.9M
Aa Mission Acquisition Corp Exited −3,230,319 −$34.5M
EV Eqv Ventures Acquisition Cor Exited −2,574,165 −$27M

Showing the 10 largest of 297 changes.

Q4 2025

quarter ended December 31, 2025 · filed February 13, 2026

Company Action Shares changed Value of change % of portfolio
Amazon Com Inc Trimmed −308,300 −$71.2M 0.8%
Amazon Com Inc Trimmed −308,300 −$71.2M 0.8%
Alphabet Inc Added +219,300 +$68.6M 3.2%
Alphabet Inc Added +219,300 +$68.6M 3.2%
Nvidia Corporation Added +343,600 +$64.1M 3.9%
Nvidia Corporation Added +343,600 +$64.1M 3.9%
Microsoft Corp Added +102,800 +$49.7M 3.5%
Microsoft Corp Added +102,800 +$49.7M 3.5%
Visteon Corp Exited −400,200 −$48M
BO Bank Ozk Little Rock Ark Exited −703,000 −$35.8M

Showing the 10 largest of 216 changes.

Q3 2025

quarter ended September 30, 2025 · filed November 14, 2025

Company Action Shares changed Value of change % of portfolio
KM Kinder Morgan Inc Del Trimmed −3,787,794 −$107M 4.6%
Salesforce Inc Exited −169,100 −$46.1M
Salesforce Inc Exited −169,100 −$46.1M
Tesla Inc New +99,400 +$44.2M 2.5%
Tesla Inc New +99,400 +$44.2M 2.5%
AA Ares Acquisition Corp Ii Exited −3,513,649 −$39.8M
WM Western Midstream Partners New +887,163 +$34.9M 2.0%
PA Plains All American Pipeline New +1,926,802 +$32.9M 1.9%
American Express Co Exited −99,400 −$31.7M
American Express Co Exited −99,400 −$31.7M

Showing the 10 largest of 213 changes.

Q2 2025

quarter ended June 30, 2025 · filed August 14, 2025

Company Action Shares changed Value of change % of portfolio
Tesla Inc Exited −345,800 −$89.6M
Tesla Inc Exited −345,800 −$89.6M
Nvidia Corporation Trimmed −397,500 −$62.8M 1.6%
Nvidia Corporation Trimmed −397,500 −$62.8M 1.6%
Salesforce Inc New +169,100 +$46.1M 2.4%
Salesforce Inc New +169,100 +$46.1M 2.4%
Microsoft Corp Exited −99,500 −$37.4M
Microsoft Corp Exited −99,500 −$37.4M
Meta Platforms Inc Trimmed −44,600 −$32.9M
Meta Platforms Inc Trimmed −44,600 −$32.9M

Showing the 10 largest of 207 changes.

Q1 2025

quarter ended March 31, 2025 · filed May 15, 2025

Company Action Shares changed Value of change % of portfolio
Tesla Inc New +345,800 +$89.6M 5.2%
Tesla Inc New +345,800 +$89.6M 5.2%
Apple Inc Exited −347,200 −$86.9M
Apple Inc Exited −347,200 −$86.9M
Salesforce Inc Exited −223,800 −$74.8M
Salesforce Inc Exited −223,800 −$74.8M
Alphabet Inc Exited −367,500 −$69.6M
Alphabet Inc Exited −367,500 −$69.6M
Advanced Micro Devices Inc Exited −570,900 −$69M
Advanced Micro Devices Inc Exited −570,900 −$69M

Showing the 10 largest of 169 changes.

Q4 2024

quarter ended December 31, 2024 · filed February 14, 2025

Company Action Shares changed Value of change % of portfolio
Apple Inc New +347,200 +$86.9M 3.5%
Apple Inc New +347,200 +$86.9M 3.5%
Salesforce Inc New +223,800 +$74.8M 3.0%
Salesforce Inc New +223,800 +$74.8M 3.0%
Microsoft Corp New +168,400 +$71M 2.8%
Microsoft Corp New +168,400 +$71M 2.8%
Alphabet Inc New +367,500 +$69.6M 2.8%
Alphabet Inc New +367,500 +$69.6M 2.8%
Meta Platforms Inc New +112,700 +$66M 2.6%
Meta Platforms Inc New +112,700 +$66M 2.6%

Showing the 10 largest of 154 changes.

Q3 2024

quarter ended September 30, 2024 · filed November 14, 2024

Company Action Shares changed Value of change % of portfolio
Apple Inc Exited −546,100 −$115M
Apple Inc Exited −546,100 −$115M
Alphabet Inc Exited −489,700 −$89.2M
Alphabet Inc Exited −489,700 −$89.2M
Microsoft Corp Exited −174,000 −$77.8M
Microsoft Corp Exited −174,000 −$77.8M
Johnson & Johnson New +268,700 +$43.5M 2.5%
Johnson & Johnson New +268,700 +$43.5M 2.5%
Mcdonalds Corp Trimmed −124,900 −$38M 1.7%
Mcdonalds Corp Trimmed −124,900 −$38M 1.7%

Showing the 10 largest of 175 changes.

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