MBI MBIA Inc.
MBIA Inc. (MBI) 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 |
|---|---|---|---|---|---|---|
| Point72 Asset Management, L.P. | Sold Out | -21.5K | -100.0% | $140.4K | 0.0% | 59 |
| MILLENNIUM MANAGEMENT LLC | Sold Out | -11.8K | -100.0% | $76.7K | 0.0% | 57 |
| MARSHALL WACE, LLP Long/Short | New | +24.1K | — | $157.1K | 0.0% | 56 |
| Quadrature Capital Quant | Sold Out | -30.9K | -100.0% | $201.2K | 0.0% | 52 |
| Walleye Capital Long/Short Quant | Sold Out | -91.8K | -100.0% | $598.5K | 0.0% | 51 |
| J. Goldman & Co. Long/Short | Sold Out | -12.5K | -100.0% | $81.5K | 0.0% | 50 |
| Centiva Capital Long/Short Quant | Sold Out | -23.8K | -100.0% | $154.9K | 0.0% | 48 |
| TWO SIGMA INVESTMENTS, LP Quant | Increased | +14.8K | +87.7% | $96.5K | 0.0% | 48 |
| CITADEL ADVISORS LLC Quant | Reduced | -135.0K | -76.7% | $879.9K | 0.0% | 46 |
| D. E. Shaw & Co., Inc. Quant | Reduced | -31.5K | -73.8% | $205.1K | 0.0% | 45 |
Most significant buyers
By move score, not size.
- MARSHALL WACE, LLP
- TWO SIGMA INVESTMENTS, LP
- Trexquant Investment
- AQR Capital Management
- ExodusPoint Capital Management
Most significant sellers
By move score, not size.
- Point72 Asset Management, L.P.
- MILLENNIUM MANAGEMENT LLC
- Quadrature Capital
- Walleye Capital
- J. Goldman & Co.
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Point72 Asset Management, L.P. | 1 | 0 | 21.5K | -21.5K | -100.0% | 0.0% | Sold Out | 59 |
| MILLENNIUM MANAGEMENT LLC | 2 | 0 | 11.8K | -11.8K | -100.0% | 0.0% | Sold Out | 57 |
| MARSHALL WACE, LLP | 2 | 24.1K | 0 | +24.1K | — | 0.0% | New | 56 |
| Quadrature Capital | 3 | 0 | 30.9K | -30.9K | -100.0% | 0.0% | Sold Out | 52 |
| Walleye Capital | 3 | 0 | 91.8K | -91.8K | -100.0% | 0.0% | Sold Out | 51 |
| J. Goldman & Co. | 3 | 0 | 12.5K | -12.5K | -100.0% | 0.0% | Sold Out | 50 |
| Centiva Capital | 4 | 0 | 23.8K | -23.8K | -100.0% | 0.0% | Sold Out | 48 |
| TWO SIGMA INVESTMENTS, LP | 2 | 31.7K | 16.9K | +14.8K | +87.7% | 0.0% | Increased | 48 |
| CITADEL ADVISORS LLC | 1 | 41.0K | 175.9K | -135.0K | -76.7% | 0.0% | Reduced | 46 |
| D. E. Shaw & Co., Inc. | 1 | 11.2K | 42.6K | -31.5K | -73.8% | 0.0% | Reduced | 45 |
| Trexquant Investment | 3 | 66.5K | 25.1K | +41.4K | +165.0% | 0.0% | Increased | 45 |
| AQR Capital Management | 3 | 141.0K | 25.7K | +115.3K | +448.0% | 0.0% | Increased | 45 |
| Squarepoint Ops LLC | 2 | 101.9K | 177.7K | -75.8K | -42.7% | 0.0% | Reduced | 34 |
| RENAISSANCE TECHNOLOGIES LLC | 1 | 310.9K | 409.9K | -99.0K | -24.2% | 0.0% | Reduced | 33 |
| ExodusPoint Capital Management | 3 | 46.0K | 33.4K | +12.6K | +37.9% | 0.0% | Increased | 31 |
| Engineers Gate | 4 | 24.9K | 42.9K | -18.0K | -42.0% | 0.0% | Reduced | 27 |
| Tudor Investment Corporation | 2 | 298.4K | 349.0K | -50.6K | -14.5% | 0.0% | Reduced | 26 |
| Brevan Howard Capital Management | 3 | 12.6K | 15.5K | -2.9K | -18.7% | 0.0% | Reduced | 23 |
| Whitebox Advisors | 2 | 304.5K | 304.5K | 0 | +0.0% | 0.1% | Unchanged | 21 |
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.