W.R. Berkley
926 hedge funds and large institutions have $18.5B invested in W.R. Berkley in 2026 Q1 according to their latest regulatory filings, with 98 funds opening new positions, 247 increasing their positions, 421 reducing their positions, and 109 closing their positions.
166% more call options, than puts
Call options by funds: $14.3M | Put options by funds: $5.38M
8% more funds holding in top 10
Funds holding in top 10: 12 → 13 (+1)
0.31% less ownership
Funds ownership: 74.81% → 74.5% (-0.31%)
3% less funds holding
Funds holding: 951 → 926 (-25)
7% less capital invested
Capital invested by funds: $19.9B → $18.5B (-$1.44B)
10% less first-time investments, than exits
New positions opened: 98 | Existing positions closed: 109
41% less repeat investments, than reductions
Existing positions increased: 247 | Existing positions reduced: 421
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
MSI
Mitsui Sumitomo Insurance
Tokyo,
Japan
|
+$568M |
| 2 |
Citadel Advisors
Miami,
Florida
|
+$88.3M |
| 3 |
Jones Financial Companies
Des Peres,
Missouri
|
+$78.5M |
| 4 |
Jane Street
New York
|
+$68.7M |
| 5 |
Morgan Stanley
New York
|
+$42.3M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
-$123M |
| 2 |
Janus Henderson Group
London,
|
-$75.8M |
| 3 |
Kayne Anderson Rudnick Investment Management
Los Angeles,
California
|
-$64.5M |
| 4 |
Principal Financial Group
Des Moines,
Iowa
|
-$54.4M |
| 5 |
DP
Dundas Partners
Edinburgh,
United Kingdom
|
-$53.1M |
WRB Hedge Fund Activity: Q1 2026 in Review
926 of the 8,207 institutional investors tracked by Wall St. Rank reported a position in W.R. Berkley (WRB) for Q1 2026, worth a combined $18.5B — down 7.2% from $19.9B a quarter earlier.
Sellers outnumbered buyers: 109 funds closed out of WRB and 98 opened new positions — a net loss of 11 holders — while 421 trimmed existing stakes and 247 added.
The largest buyer was Mitsui Sumitomo Insurance, adding an estimated $568M. The largest seller was BlackRock, cutting an estimated $123M.
- 926 institutional investors held W.R. Berkley (WRB) as of Q1 2026, down from 951 in Q4 2025.
- Funds reported $18.5B of W.R. Berkley stock for Q1 2026, down 7.2% quarter-over-quarter.
- 98 funds opened new W.R. Berkley positions in Q1 2026 and 109 closed out, a net change of -11 holders.
- The largest W.R. Berkley buyer in Q1 2026 was Mitsui Sumitomo Insurance, an estimated $568M added.
- The largest W.R. Berkley seller in Q1 2026 was BlackRock, an estimated $123M sold.
Based on aggregated 13F filings for Q1 2026.