AMG Affiliated Managers Group Inc.
Affiliated Managers Group Inc. (AMG) 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 | -44.3K | -100.0% | $15.0M | 0.0% | 63 |
| Bridgewater Associates Quant Macro | Sold Out | -6.5K | -100.0% | $2.2M | 0.0% | 63 |
| MILLENNIUM MANAGEMENT LLC | Increased | +869.7K | +16202.5% | $294.3M | 0.2% | 62 |
| Prana Capital Management Long/Short | Sold Out | -61.5K | -100.0% | $20.8M | 0.0% | 60 |
| Woodline Partners LP Long/Short | Sold Out | -145.9K | -100.0% | $49.4M | 0.0% | 59 |
| Alyeska Investment Group, L.P. | New | +3.4K | — | $1.1M | 0.0% | 58 |
| Capital Fund Management Quant Macro | New | +30.8K | — | $10.4M | 0.1% | 57 |
| Magnetar Capital Event Quant | Sold Out | -4.1K | -100.0% | $1.4M | 0.0% | 57 |
| Chilton Investment Company Long/Short Value | New | +2.0K | — | $687.0K | 0.0% | 54 |
| MARSHALL WACE, LLP Long/Short | Increased | +21.0K | +874.9% | $7.1M | 0.0% | 52 |
Most significant buyers
By move score, not size.
- MILLENNIUM MANAGEMENT LLC
- Alyeska Investment Group, L.P.
- Capital Fund Management
- Chilton Investment Company
- MARSHALL WACE, LLP
Most significant sellers
By move score, not size.
- Point72 Asset Management, L.P.
- Bridgewater Associates
- Prana Capital Management
- Woodline Partners LP
- Magnetar Capital
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Point72 Asset Management, L.P. | 1 | 0 | 44.3K | -44.3K | -100.0% | 0.0% | Sold Out | 63 |
| Bridgewater Associates | 1 | 0 | 6.5K | -6.5K | -100.0% | 0.0% | Sold Out | 63 |
| MILLENNIUM MANAGEMENT LLC | 2 | 875.1K | 5.4K | +869.7K | +16202.5% | 0.2% | Increased | 62 |
| Prana Capital Management | 3 | 0 | 61.5K | -61.5K | -100.0% | 0.0% | Sold Out | 60 |
| Woodline Partners LP | 2 | 0 | 145.9K | -145.9K | -100.0% | 0.0% | Sold Out | 59 |
| Alyeska Investment Group, L.P. | 2 | 3.4K | 0 | +3.4K | — | 0.0% | New | 58 |
| Capital Fund Management | 3 | 30.8K | 0 | +30.8K | — | 0.1% | New | 57 |
| Magnetar Capital | 2 | 0 | 4.1K | -4.1K | -100.0% | 0.0% | Sold Out | 57 |
| Chilton Investment Company | 2 | 2.0K | 0 | +2.0K | — | 0.0% | New | 54 |
| MARSHALL WACE, LLP | 2 | 23.4K | 2.4K | +21.0K | +874.9% | 0.0% | Increased | 52 |
| Jain Global | 3 | 1.4K | 0 | +1.4K | — | 0.0% | New | 52 |
| Aquatic Capital Management | 4 | 0 | 13.7K | -13.7K | -100.0% | 0.0% | Sold Out | 51 |
| Squarepoint Ops LLC | 2 | 17.6K | 5.1K | +12.5K | +245.0% | 0.0% | Increased | 51 |
| Basswood Capital Management | 3 | 34.5K | 12.3K | +22.2K | +180.4% | 0.5% | Increased | 50 |
| Qube Research & Technologies Ltd | 2 | 268.7K | 154.2K | +114.5K | +74.2% | 0.1% | Increased | 47 |
| Engineers Gate | 4 | 51.9K | 19.8K | +32.0K | +161.4% | 0.2% | Increased | 47 |
| Man Group | 3 | 24.0K | 90.5K | -66.5K | -73.4% | 0.0% | Reduced | 43 |
| Y-Intercept | 4 | 1.8K | 25.9K | -24.1K | -93.0% | 0.0% | Reduced | 43 |
| Walleye Capital | 3 | 238 | 2.7K | -2.4K | -91.1% | 0.0% | Reduced | 43 |
| Voloridge Investment Management | 2 | 54.1K | 130.8K | -76.8K | -58.7% | 0.1% | Reduced | 42 |
| Schonfeld Strategic Advisors | 3 | 26.7K | 66.3K | -39.5K | -59.7% | 0.1% | Reduced | 40 |
| Boothbay Fund Management | 4 | 1.1K | 5.1K | -3.9K | -77.6% | 0.0% | Reduced | 39 |
| Quadrature Capital | 3 | 3.3K | 7.4K | -4.1K | -55.8% | 0.0% | Reduced | 38 |
| CITADEL ADVISORS LLC | 1 | 198.5K | 247.2K | -48.7K | -19.7% | 0.0% | Reduced | 36 |
| Edgestream Partners | 4 | 2.3K | 5.4K | -3.1K | -57.1% | 0.0% | Reduced | 34 |
| RENAISSANCE TECHNOLOGIES LLC | 1 | 117.4K | 109.8K | +7.7K | +7.0% | 0.1% | Increased | 31 |
| D. E. Shaw & Co., Inc. | 1 | 42.8K | 39.3K | +3.6K | +9.1% | 0.0% | Increased | 31 |
| Brevan Howard Capital Management | 3 | 8.0K | 12.7K | -4.8K | -37.4% | 0.1% | Reduced | 30 |
| TWO SIGMA INVESTMENTS, LP | 2 | 5.6K | 5.1K | +475 | +9.3% | 0.0% | Increased | 28 |
| Quantbot Technologies | 4 | 2.5K | 3.8K | -1.3K | -34.5% | 0.0% | Reduced | 23 |
| Tudor Investment Corporation | 2 | 11.7K | 11.9K | -217 | -1.8% | 0.0% | Reduced | 23 |
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.