MAIR Madison Air Solutions Corporation
Madison Air Solutions Corporation (MAIR) 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 |
|---|---|---|---|---|---|---|
| Durable Capital Partners Growth | New | +10.20M | — | $397.7M | 3.9% | 84 |
| Forest Avenue Capital Management Long/Short | New | +4.06M | — | $158.4M | 6.7% | 83 |
| Zimmer Partners Long/Short | New | +4.15M | — | $161.9M | 3.8% | 77 |
| XN Growth Tech | New | +2.63M | — | $102.6M | 2.7% | 75 |
| Merewether Investment Management Event | New | +1.94M | — | $75.8M | 1.4% | 66 |
| CITADEL ADVISORS LLC Quant | New | +6.45M | — | $251.5M | 0.2% | 65 |
| D1 Capital Partners L.P. | New | +1.25M | — | $48.8M | 0.1% | 61 |
| Alyeska Investment Group, L.P. | New | +1.73M | — | $67.4M | 0.2% | 59 |
| Ghisallo Capital Management Long/Short | New | +800.0K | — | $31.2M | 0.8% | 59 |
| D. E. Shaw & Co., Inc. Quant | New | +261.6K | — | $10.2M | 0.0% | 58 |
Most significant buyers
By move score, not size.
- Durable Capital Partners
- Forest Avenue Capital Management
- Zimmer Partners
- XN
- Merewether Investment Management
Most significant sellers
By move score, not size.
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Durable Capital Partners | 1 | 10.2M | 0 | +10.20M | — | 3.9% | New | 84 |
| Forest Avenue Capital Management | 2 | 4.1M | 0 | +4.06M | — | 6.7% | New | 83 |
| Zimmer Partners | 2 | 4.2M | 0 | +4.15M | — | 3.8% | New | 77 |
| XN | 1 | 2.6M | 0 | +2.63M | — | 2.7% | New | 75 |
| Merewether Investment Management | 2 | 1.9M | 0 | +1.94M | — | 1.4% | New | 66 |
| CITADEL ADVISORS LLC | 1 | 6.4M | 0 | +6.45M | — | 0.2% | New | 65 |
| D1 Capital Partners L.P. | 1 | 1.3M | 0 | +1.25M | — | 0.1% | New | 61 |
| Alyeska Investment Group, L.P. | 2 | 1.7M | 0 | +1.73M | — | 0.2% | New | 59 |
| Ghisallo Capital Management | 2 | 800.0K | 0 | +800.0K | — | 0.8% | New | 59 |
| D. E. Shaw & Co., Inc. | 1 | 261.6K | 0 | +261.6K | — | 0.0% | New | 58 |
| Balyasny Asset Management L.P. | 2 | 791.0K | 0 | +791.0K | — | 0.1% | New | 57 |
| Point72 Asset Management, L.P. | 1 | 149.9K | 0 | +149.9K | — | 0.0% | New | 57 |
| MILLENNIUM MANAGEMENT LLC | 2 | 580.5K | 0 | +580.5K | — | 0.0% | New | 57 |
| TWO SIGMA INVESTMENTS, LP | 2 | 318.5K | 0 | +318.5K | — | 0.0% | New | 57 |
| ExodusPoint Capital Management | 3 | 1.3M | 0 | +1.33M | — | 0.5% | New | 57 |
| Davidson Kempner Capital Management | 2 | 200.0K | 0 | +200.0K | — | 0.2% | New | 55 |
| Readystate Asset Management | 3 | 411.0K | 0 | +411.0K | — | 1.1% | New | 55 |
| Hudson Bay Capital Management | 3 | 401.7K | 0 | +401.7K | — | 0.1% | New | 54 |
| Holocene Advisors, LP | 2 | 37.6K | 0 | +37.6K | — | 0.0% | New | 54 |
| LMR Partners | 3 | 307.4K | 0 | +307.4K | — | 0.1% | New | 53 |
| Jain Global | 3 | 430.6K | 0 | +430.6K | — | 0.2% | New | 53 |
| Squarepoint Ops LLC | 2 | 80.0K | 0 | +80.0K | — | 0.0% | New | 53 |
| Weiss Asset Management | 2 | 170.0K | 0 | +170.0K | — | 0.1% | New | 53 |
| Schonfeld Strategic Advisors | 3 | 1.0M | 0 | +1.00M | — | 0.3% | New | 52 |
| Woodline Partners LP | 2 | 100.0K | 0 | +100.0K | — | 0.0% | New | 52 |
| Tudor Investment Corporation | 2 | 185.1K | 0 | +185.1K | — | 0.0% | New | 52 |
| Walleye Capital | 3 | 231.0K | 0 | +231.0K | — | 0.1% | New | 49 |
| Centiva Capital | 4 | 75.0K | 0 | +75.0K | — | 0.1% | New | 47 |
| Engineers Gate | 4 | 38.5K | 0 | +38.5K | — | 0.0% | New | 46 |
| Brevan Howard Capital Management | 3 | 13.7K | 0 | +13.7K | — | 0.0% | New | 45 |
| Quantbot Technologies | 4 | 56 | 0 | +56 | — | 0.0% | New | 41 |
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.