Berkley W R Corp holds a focused book of 345 reported positions worth $1.9B as of Q1 2026 (disclosed May 15, 2026, a ~45-day 13F lag). This quarter FG Imperii Acquisition-CL A first appears in 13F filings (one of 77 new listings in the book), a listing rather than a purchase; they opened Digital Asset Acquisiti-CL A and trimmed Voyager Acquisition Corp. Their largest long position is Enterprise Products Partners at 14% of the reported non-option book.
Top-heavy: focused book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
98% mapped to company sectors
+2 sectors below the cut, under 0.5% together
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices (an exit at the prior quarter-end), no cost basis
Other tracked managers holding the same core names as Berkley W R Corp
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| Crossingbridge Advisors, LLC | 33 / 80 | $210.2M |
| Longfellow Investment Management Co LLC | 15 / 80 | $161.3M |
| RiverPark Advisors, LLC | 15 / 80 | $70.2M |
| Meteora Capital, LLC | 40 / 80 | $274.1M |
| Gritstone Asset Management LLC | 11 / 80 | $17.6M |
| Harraden Circle Investments, LLC | 11 / 80 | $123.1M |
| Wealthspring Capital LLC | 15 / 80 | $70.0M |
| Radcliffe Capital Management, L.P. | 46 / 80 | $204.6M |
Ranked by the share of each fund's own book sitting in the names it shares with Berkley W R Corp: only funds sharing at least a tenth of the book qualify. Index giants, bank custody books and market makers are excluded. They hold everything, so their overlap says nothing.
Bars show each position's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Enterprise Prods Partners L COM | $258.3M | 6.83M | 13.9% | —Held | |
| 2 | Energy Transfer L P COM UT LTD PTN | $159.2M | 8.25M | 8.6% | —Held | |
| 3 | Kinder Morgan Inc Del COM | $95.1M | 2.84M | 5.1% | —Held | |
| 4 | Plains All Amern Pipeline L UNIT LTD PARTN | $59.9M | 2.68M | 3.2% | —Held | |
| 5 | Western Midstream Partners L COM UNIT LP INT | $52.2M | 1.27M | 2.8% | ▲+43% Added · +380K sh | |
| 6 | On Semiconductor Corp COM | $45.3M | 731.1K | 2.4% | —Held | |
| 7 | Progressive Corp COM | $41.2M | 207.6K | 2.2% | ▲+93% Added · +100K sh | |
| 8 | Agriculture & Nat Sol Acq Co SHS CL A | $29.7M | 2.63M | 1.6% | ▲+4.0% Added · +101K sh | |
| 9 | Haymaker Acquisition Corp IV CLASS A | $26.7M | 2.32M | 1.4% | ▲+18% Added · +357K sh | |
| 10 | Global Indemnity Group LLC COM CL A | $25.0M | 919.7K | 1.3% | —Held | |
| 11 | Cantor Equity Partners III I SHS CL A | $23.0M | 2.23M | 1.2% | ▲+112% Added · +1.2M sh | |
| 12 | Mountain Lake Acquisition Co SHS CL A | $19.8M | 1.88M | 1.1% | ▲+418% Added · +1.5M sh | |
| 13 | Churchill Capital Corp IX CL A SHS | $19.3M | 1.81M | 1.0% | ▲+93% Added · +874K sh | |
| 14 | Roman DBDR Acquisition Corp ORD SHS CL A | $18.9M | 1.80M | 1.0% | ▲+573% Added · +1.5M sh | |
| 15 | Berto Acquisition Corp ORD SHS | $18.7M | 1.82M | 1.0% | ▲+78% Added · +798K sh | |
| 16 | Eqv Ventures Ac Corp. II ORD SHS CL A | $18.7M | 1.85M | 1.0% | —Held | |
| 17 | Gigcapital7 Corp ORD SHS CL A | $18.5M | 1.74M | 1.0% | ▲+310% Added · +1.3M sh | |
| 18 | Inflection PT Acquisition Co CL A ORD SHS | $18.1M | 1.77M | 1.0% | ▲+49% Added · +585K sh | |
| 19 | Kochav Defense Acqui Co SHS CL A | $17.3M | 1.69M | 0.9% | ▲+0.2% Added · +4K sh | |
| 20 | Yorkville Acquisition Corp. SHS CL A | $16.6M | 1.65M | 0.9% | ▲+329% Added · +1.3M sh | |
| 21 | Silverbox Corp IV SHS CL A | $16.2M | 1.51M | 0.9% | ▲+25% Added · +303K sh | |
| 22 | Legato Merger Corp III ORD SHS | $16.1M | 1.47M | 0.9% | ▲+360% Added · +1.1M sh | |
| 23 | Launch One Acquisition Corp SHS CLASS A | $15.9M | 1.49M | 0.9% | ▲+4.5% Added · +64K sh | |
| 24 | Voyager Acquisition Corp CL A | $13.9M | 1.30M | 0.7% | ▼−28% Reduced · −497K sh | |
| 25 | ST Joe Co COM | $13.2M | 209.5K | 0.7% | —Held | |
| 26 | Gigcapital8 Corp ORD CL A | $12.9M | 1.29M | 0.7% | —Held | |
| 27 | Cantor Equity Partners I Inc SHS CL A | $12.8M | 1.22M | 0.7% | ▲+26% Added · +252K sh | |
| 28 | Armada Acquisition Corp II COM CL A | $12.7M | 1.23M | 0.7% | ▲+124% Added · +682K sh | |
| 29 | Centurion Acquisition Corp SHS CL A | $12.5M | 1.16M | 0.7% | ▲+376% Added · +914K sh | |
| 30 | K&F Growth Acquisition Corp SHS CL A | $11.2M | 1.07M | 0.6% | ▲+10% Added · +99K sh | |
| 31 | Globa Terra Acquisition Cor CL A ORD SHS | $10.9M | 1.06M | 0.6% | ▲+20% Added · +175K sh | |
| 32 | Melar Acquisition Corp. I SHS CL A | $10.8M | 999.0K | 0.6% | ▲+15% Added · +130K sh | |
| 33 | Copley Acquisition Corp ORD SHS CL A | $10.6M | 1.03M | 0.6% | ▲+11% Added · +99K sh | |
| 34 | M3brigade Acquisition V Corp CL A | $10.3M | 963.7K | 0.6% | ▼−3.3% Reduced · −33K sh | |
| 35 | Inflection Point Acqu Corp V ORD SHS CL A | $10.2M | 981.1K | 0.5% | ▲+29% Added · +223K sh | |
| 36 | Lionheart Holdings SHS CL A | $9.9M | 917.0K | 0.5% | ▲+45% Added · +285K sh | |
| 37 | FG Imperii Acquisition Corp ORD SHS CL A | $9.8M | 992.1K | 0.5% | →Listed Newly reportable | |
| 38 | Sim Acquisition Corp. I SHS CL A | $9.8M | 912.3K | 0.5% | ▲+75% Added · +391K sh | |
| 39 | Charlton Aria Acquisition Co ORD SHS CL A | $9.3M | 879.0K | 0.5% | ▲+19% Added · +143K sh | |
| 40 | GP-Act III Acquisition Corp CL A | $9.2M | 846.8K | 0.5% | ▲+171% Added · +535K sh | |
| 41 | Pantages Capital Acquisition ORD SHS CL A | $9.2M | 874.4K | 0.5% | ▲+50% Added · +293K sh | |
| 42 | Xsolla Spac 1 USD CL A ORD SHS | $9.0M | 920.2K | 0.5% | →Listed Newly reportable | |
| 43 | Soulpower Acquisition Corp USD CL A ORD SHS | $8.9M | 866.8K | 0.5% | ▲+150% Added · +519K sh | |
| 44 | Gigcapital9 Corp CL A | $8.7M | 882.4K | 0.5% | →Listed Newly reportable | |
| 45 | Launch Two Acquisition Corp. ORD SHS CL A | $8.7M | 816.7K | 0.5% | ▲+33% Added · +205K sh | |
| 46 | Plum Acquisition Corp IV SHS CL A | $8.5M | 804.2K | 0.5% | ▲+4.6% Added · +35K sh | |
| 47 | RF Acquisition Corp II SHS | $8.4M | 766.4K | 0.4% | ▲+157% Added · +469K sh | |
| 48 | Dynamix Corp SHS CL A | $8.3M | 790.5K | 0.4% | ▲+66% Added · +314K sh | |
| 49 | Cantor Equity Partners V Inc SHS CL A S | $8.0M | 793.0K | 0.4% | —Held | |
| 50 | Verizon Communications Inc COM | $7.9M | 157.7K | 0.4% | —Held |
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/11544/holdings"
Use Arkolith to show BERKLEY W R CORP's latest holdings, largest changes, and filing provenance.
As-of date vs the date the SEC received each filing
Reported 13F total per quarter. Raw filing totals can include option notional.
| Quarter | As of | Filed | Lag | Positions | Value | Form |
|---|---|---|---|---|---|---|
| Q1 2026 | Mar 31, 2026 | May 15, 2026 | 45d | 345 | $1.9B | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 13, 2026 | 44d | 285 | $2.1B | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 14, 2025 | 45d | 235 | $1.7B | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Aug 14, 2025 | 45d | 227 | $1.9B | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 15, 2025 | 45d | 158 | $1.7B | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 14, 2025 | 45d | 154 | $2.5B | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Nov 14, 2024 | 45d | 153 | $1.8B | 13F-HR |
| Q2 2024 | Jun 30, 2024 | Aug 14, 2024 | 45d | 153 | $2.4B | 13F-HR |
| Q1 2024 | Mar 31, 2024 | May 15, 2024 | 45d | 155 | $1.8B | 13F-HR |
| Q4 2023 | Dec 31, 2023 | Feb 14, 2024 | 45d | 195 | $1.4B | 13F-HR |
| Q3 2023 | Sep 30, 2023 | Nov 14, 2023 | 45d | 213 | $1.5B | 13F-HR |
| Q2 2023 | Jun 30, 2023 | Aug 14, 2023 | 45d | 220 | $1.7B | 13F-HR |
| Q1 2023 | Mar 31, 2023 | May 15, 2023 | 45d | 236 | $1.6B | 13F-HR |
| Q4 2022 | Dec 31, 2022 | Feb 14, 2023 | 45d | 338 | $1.9B | 13F-HR |
| Q3 2022 | Sep 30, 2022 | Nov 14, 2022 | 45d | 512 | $2.1B | 13F-HR |
| Q2 2022 | Jun 30, 2022 | Aug 15, 2022 | 46d | 553 | $2.0B | 13F-HR |
| Q1 2022 | Mar 31, 2022 | May 16, 2022 | 46d | 573 | $2.0B | 13F-HR |
| Q4 2021 | Dec 31, 2021 | Feb 14, 2022 | 45d | 572 | $1.8B | 13F-HR |
| Q3 2021 | Sep 30, 2021 | Feb 14, 2022 | 137d | 445 | $1.5B | 13F-HR/A |
| Q2 2021 | Jun 30, 2021 | Aug 16, 2021 | 47d | 380 | $1.0B | 13F-HR |
| Q1 2021 | Mar 31, 2021 | May 17, 2021 | 47d | 336 | $867.6M | 13F-HR |
| Q4 2020 | Dec 31, 2020 | Feb 16, 2021 | 47d | 171 | $602.8M | 13F-HR |
| Q3 2020 | Sep 30, 2020 | Nov 16, 2020 | 47d | 134 | $679.8M | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. Book totals and portfolio weights cover reported non-option positions, which can include notes and warrants. Disclosed put/call options are listed separately and excluded from those totals. Price-derived performance is withheld until the price-source policy and freshness gate are green.