WRB W. R. Berkley Corporation
W. R. Berkley Corporation (WRB) Hedge Fund Activity
This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.
Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.
Most significant moves
Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.
| Fund | Action | Shares changed | Change | Est. value | Portfolio wt. | Score |
|---|---|---|---|---|---|---|
| Bridgewater Associates Quant Macro | New | +13.5K | — | $952.1K | 0.0% | 61 |
| TWO SIGMA INVESTMENTS, LP Quant | Increased | +1.74M | +637.5% | $122.7M | 0.1% | 59 |
| Qube Research & Technologies Ltd Quant | Sold Out | -154.0K | -100.0% | $10.9M | 0.0% | 59 |
| Ilex Capital Partners Long/Short | New | +101.8K | — | $7.2M | 0.1% | 57 |
| Weiss Asset Management Event Quant | Sold Out | -14.9K | -100.0% | $1.0M | 0.0% | 56 |
| MILLENNIUM MANAGEMENT LLC | Increased | +477.0K | +103.9% | $33.6M | 0.1% | 55 |
| Capital Fund Management Quant Macro | New | +64.2K | — | $4.5M | 0.0% | 55 |
| Quadrature Capital Quant | Sold Out | -15.0K | -100.0% | $1.1M | 0.0% | 55 |
| Squarepoint Ops LLC Quant | Increased | +697.6K | +1300.5% | $49.2M | 0.1% | 53 |
| AQR Capital Management Long/Short Quant | Increased | +1.83M | +99.1% | $129.2M | 0.1% | 53 |
Most significant buyers
By move score, not size.
- Bridgewater Associates
- TWO SIGMA INVESTMENTS, LP
- Ilex Capital Partners
- MILLENNIUM MANAGEMENT LLC
- Capital Fund Management
Most significant sellers
By move score, not size.
- Qube Research & Technologies Ltd
- Weiss Asset Management
- Quadrature Capital
- Walleye Capital
- Voleon Capital Management
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Bridgewater Associates | 1 | 13.5K | 0 | +13.5K | — | 0.0% | New | 61 |
| TWO SIGMA INVESTMENTS, LP | 2 | 2.0M | 273.0K | +1.74M | +637.5% | 0.1% | Increased | 59 |
| Qube Research & Technologies Ltd | 2 | 0 | 154.0K | -154.0K | -100.0% | 0.0% | Sold Out | 59 |
| Ilex Capital Partners | 2 | 101.8K | 0 | +101.8K | — | 0.1% | New | 57 |
| Weiss Asset Management | 2 | 0 | 14.9K | -14.9K | -100.0% | 0.0% | Sold Out | 56 |
| MILLENNIUM MANAGEMENT LLC | 2 | 936.2K | 459.2K | +477.0K | +103.9% | 0.1% | Increased | 55 |
| Capital Fund Management | 3 | 64.2K | 0 | +64.2K | — | 0.0% | New | 55 |
| Quadrature Capital | 3 | 0 | 15.0K | -15.0K | -100.0% | 0.0% | Sold Out | 55 |
| Squarepoint Ops LLC | 2 | 751.3K | 53.6K | +697.6K | +1300.5% | 0.1% | Increased | 53 |
| AQR Capital Management | 3 | 3.7M | 1.8M | +1.83M | +99.1% | 0.1% | Increased | 53 |
| MARSHALL WACE, LLP | 2 | 136.3K | 31.6K | +104.7K | +330.9% | 0.0% | Increased | 52 |
| Walleye Capital | 3 | 0 | 625 | -625 | -100.0% | 0.0% | Sold Out | 51 |
| Voleon Capital Management | 3 | 0 | 9.5K | -9.5K | -100.0% | 0.0% | Sold Out | 51 |
| Edgestream Partners | 4 | 12.7K | 0 | +12.7K | — | 0.0% | New | 49 |
| Brevan Howard Capital Management | 3 | 49.0K | 10.5K | +38.5K | +367.5% | 0.1% | Increased | 46 |
| Schonfeld Strategic Advisors | 3 | 9.3K | 68.6K | -59.4K | -86.5% | 0.0% | Reduced | 44 |
| Engineers Gate | 4 | 11.8K | 4.5K | +7.3K | +164.3% | 0.0% | Increased | 42 |
| D. E. Shaw & Co., Inc. | 1 | 290.4K | 200.8K | +89.6K | +44.6% | 0.0% | Increased | 40 |
| Balyasny Asset Management L.P. | 2 | 6.7K | 13.6K | -6.9K | -51.0% | 0.0% | Reduced | 39 |
| Trexquant Investment | 3 | 56.6K | 169.3K | -112.7K | -66.6% | 0.0% | Reduced | 39 |
| Man Group | 3 | 23.7K | 63.7K | -40.0K | -62.8% | 0.0% | Reduced | 39 |
| Chilton Investment Company | 2 | 1.3M | 1.4M | -48.9K | -3.5% | 2.4% | Reduced | 38 |
| Quantbot Technologies | 4 | 44.1K | 172.5K | -128.3K | -74.4% | 0.1% | Reduced | 37 |
| Y-Intercept | 4 | 55.7K | 33.0K | +22.7K | +68.9% | 0.1% | Increased | 37 |
| Tudor Investment Corporation | 2 | 571.2K | 426.3K | +144.9K | +34.0% | 0.2% | Increased | 36 |
| Gotham Asset Management, LLC | 2 | 206.7K | 167.1K | +39.6K | +23.7% | 0.0% | Increased | 31 |
| CITADEL ADVISORS LLC | 1 | 1.5M | 1.4M | +81.8K | +5.9% | 0.1% | Increased | 31 |
| Woodline Partners LP | 2 | 12.3K | 9.6K | +2.6K | +27.2% | 0.0% | Increased | 30 |
| Prana Capital Management | 3 | 155.9K | 139.0K | +16.9K | +12.2% | 0.3% | Increased | 29 |
| ExodusPoint Capital Management | 3 | 74.4K | 60.8K | +13.5K | +22.2% | 0.0% | Increased | 27 |
| WORLDQUANT MILLENNIUM ADVISORS LLC | 2 | 35.3K | 35.9K | -679 | -1.9% | 0.0% | Reduced | 25 |
| CenterBook Partners | 4 | 5.7K | 5.7K | -66 | -1.2% | 0.0% | Reduced | 18 |
Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeHedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.