AVTR Avantor, Inc.
Avantor, Inc. (AVTR) 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 |
|---|---|---|---|---|---|---|
| Tudor Investment Corporation Macro | Sold Out | -2.34M | -100.0% | $23.2M | 0.0% | 58 |
| Maverick Capital Long/Short Growth | Sold Out | -100.8K | -100.0% | $998.1K | 0.0% | 57 |
| Bridgewater Associates Quant Macro | Increased | +173.0K | +134.9% | $1.7M | 0.0% | 57 |
| Qube Research & Technologies Ltd Quant | Sold Out | -608.3K | -100.0% | $6.0M | 0.0% | 57 |
| MARSHALL WACE, LLP Long/Short | Increased | +9.69M | +281.9% | $96.0M | 0.2% | 57 |
| Weiss Asset Management Event Quant | Sold Out | -527.9K | -100.0% | $5.2M | 0.0% | 57 |
| Woodline Partners LP Long/Short | Sold Out | -755.7K | -100.0% | $7.5M | 0.0% | 56 |
| Readystate Asset Management Long/Short | Sold Out | -788.3K | -100.0% | $7.8M | 0.0% | 55 |
| Armistice Capital Long/Short Healthcare | New | +170.0K | — | $1.7M | 0.0% | 55 |
| Moore Capital Management Macro | Sold Out | -115.2K | -100.0% | $1.1M | 0.0% | 54 |
Most significant buyers
By move score, not size.
- Bridgewater Associates
- MARSHALL WACE, LLP
- Armistice Capital
- CastleKnight Management
- AQR Capital Management
Most significant sellers
By move score, not size.
- Tudor Investment Corporation
- Maverick Capital
- Qube Research & Technologies Ltd
- Weiss Asset Management
- Woodline Partners LP
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Tudor Investment Corporation | 2 | 0 | 2.3M | -2.34M | -100.0% | 0.0% | Sold Out | 58 |
| Maverick Capital | 2 | 0 | 100.8K | -100.8K | -100.0% | 0.0% | Sold Out | 57 |
| Bridgewater Associates | 1 | 301.2K | 128.2K | +173.0K | +134.9% | 0.0% | Increased | 57 |
| Qube Research & Technologies Ltd | 2 | 0 | 608.3K | -608.3K | -100.0% | 0.0% | Sold Out | 57 |
| MARSHALL WACE, LLP | 2 | 13.1M | 3.4M | +9.69M | +281.9% | 0.2% | Increased | 57 |
| Weiss Asset Management | 2 | 0 | 527.9K | -527.9K | -100.0% | 0.0% | Sold Out | 57 |
| Woodline Partners LP | 2 | 0 | 755.7K | -755.7K | -100.0% | 0.0% | Sold Out | 56 |
| Readystate Asset Management | 3 | 0 | 788.3K | -788.3K | -100.0% | 0.0% | Sold Out | 55 |
| Armistice Capital | 3 | 170.0K | 0 | +170.0K | — | 0.0% | New | 55 |
| Moore Capital Management | 3 | 0 | 115.2K | -115.2K | -100.0% | 0.0% | Sold Out | 54 |
| CastleKnight Management | 3 | 751.7K | 0 | +751.7K | — | 0.3% | New | 53 |
| Caxton Associates | 3 | 0 | 10.1K | -10.1K | -100.0% | 0.0% | Sold Out | 53 |
| Brevan Howard Capital Management | 3 | 0 | 418.4K | -418.4K | -100.0% | 0.0% | Sold Out | 52 |
| Walleye Capital | 3 | 0 | 14.8K | -14.8K | -100.0% | 0.0% | Sold Out | 51 |
| AQR Capital Management | 3 | 11.6M | 4.9M | +6.76M | +138.9% | 0.0% | Increased | 51 |
| Lighthouse Investment Partners | 3 | 0 | 19.5K | -19.5K | -100.0% | 0.0% | Sold Out | 51 |
| Squarepoint Ops LLC | 2 | 1.0M | 194.2K | +812.2K | +418.1% | 0.0% | Increased | 51 |
| Gotham Asset Management, LLC | 2 | 2.5M | 1.3M | +1.19M | +89.5% | 0.1% | Increased | 50 |
| Boothbay Fund Management | 4 | 0 | 28.9K | -28.9K | -100.0% | 0.0% | Sold Out | 49 |
| Magnetar Capital | 2 | 21.0K | 224.1K | -203.1K | -90.6% | 0.0% | Reduced | 48 |
| MILLENNIUM MANAGEMENT LLC | 2 | 753.6K | 2.4M | -1.68M | -69.1% | 0.0% | Reduced | 48 |
| WORLDQUANT MILLENNIUM ADVISORS LLC | 2 | 101.8K | 365.2K | -263.4K | -72.1% | 0.0% | Reduced | 45 |
| Engineers Gate | 4 | 54.6K | 11.8K | +42.8K | +362.5% | 0.0% | Increased | 42 |
| Quantbot Technologies | 4 | 19.8K | 6.0K | +13.8K | +231.1% | 0.0% | Increased | 39 |
| Winton Group | 4 | 10.3K | 68.2K | -57.9K | -84.9% | 0.0% | Reduced | 39 |
| Man Group | 3 | 990.5K | 611.1K | +379.4K | +62.1% | 0.0% | Increased | 38 |
| ADAR1 Capital Management | 3 | 130.0K | 80.0K | +50.0K | +62.5% | 0.1% | Increased | 38 |
| D. E. Shaw & Co., Inc. | 1 | 9.6M | 13.1M | -3.54M | -27.0% | 0.1% | Reduced | 38 |
| CITADEL ADVISORS LLC | 1 | 399.1K | 569.5K | -170.4K | -29.9% | 0.0% | Reduced | 36 |
| ExodusPoint Capital Management | 3 | 249.1K | 356.0K | -106.9K | -30.0% | 0.0% | Reduced | 31 |
| Edgestream Partners | 4 | 299.9K | 418.1K | -118.2K | -28.3% | 0.1% | Reduced | 27 |
| Aristeia Capital | 2 | 51.5K | 54.6K | -3.1K | -5.6% | 0.0% | Reduced | 24 |
| Quadrature Capital | 3 | 73.5K | 76.8K | -3.3K | -4.3% | 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.