TMDX TransMedics Group, Inc.
TransMedics Group, Inc. (TMDX) 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. | New | +192.6K | — | $12.8M | 0.0% | 63 |
| Braidwell Growth Healthcare | Increased | +280.3K | +85.1% | $18.6M | 1.6% | 59 |
| MARSHALL WACE, LLP Long/Short | Sold Out | -15.6K | -100.0% | $1.0M | 0.0% | 58 |
| D. E. Shaw & Co., Inc. Quant | Sold Out | -2.5K | -100.0% | $164.8K | 0.0% | 58 |
| Holocene Advisors, LP | New | +33.8K | — | $2.2M | 0.0% | 58 |
| Gotham Asset Management, LLC Quant Value | Sold Out | -37.8K | -100.0% | $2.5M | 0.0% | 56 |
| CITADEL ADVISORS LLC Quant | Increased | +497.2K | +807.2% | $33.0M | 0.0% | 56 |
| Tudor Investment Corporation Macro | Sold Out | -40.2K | -100.0% | $2.7M | 0.0% | 56 |
| Squarepoint Ops LLC Quant | Sold Out | -7.3K | -100.0% | $483.1K | 0.0% | 54 |
| TWO SIGMA INVESTMENTS, LP Quant | Reduced | -316.2K | -97.2% | $21.0M | 0.0% | 54 |
Most significant buyers
By move score, not size.
- Point72 Asset Management, L.P.
- Braidwell
- Holocene Advisors, LP
- CITADEL ADVISORS LLC
- Schonfeld Strategic Advisors
Most significant sellers
By move score, not size.
- MARSHALL WACE, LLP
- D. E. Shaw & Co., Inc.
- Gotham Asset Management, LLC
- Tudor Investment Corporation
- Squarepoint Ops LLC
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Point72 Asset Management, L.P. | 1 | 192.6K | 0 | +192.6K | — | 0.0% | New | 63 |
| Braidwell | 2 | 609.7K | 329.4K | +280.3K | +85.1% | 1.6% | Increased | 59 |
| MARSHALL WACE, LLP | 2 | 0 | 15.6K | -15.6K | -100.0% | 0.0% | Sold Out | 58 |
| D. E. Shaw & Co., Inc. | 1 | 0 | 2.5K | -2.5K | -100.0% | 0.0% | Sold Out | 58 |
| Holocene Advisors, LP | 2 | 33.8K | 0 | +33.8K | — | 0.0% | New | 58 |
| Gotham Asset Management, LLC | 2 | 0 | 37.8K | -37.8K | -100.0% | 0.0% | Sold Out | 56 |
| CITADEL ADVISORS LLC | 1 | 558.8K | 61.6K | +497.2K | +807.2% | 0.0% | Increased | 56 |
| Tudor Investment Corporation | 2 | 0 | 40.2K | -40.2K | -100.0% | 0.0% | Sold Out | 56 |
| Squarepoint Ops LLC | 2 | 0 | 7.3K | -7.3K | -100.0% | 0.0% | Sold Out | 54 |
| TWO SIGMA INVESTMENTS, LP | 2 | 8.9K | 325.1K | -316.2K | -97.2% | 0.0% | Reduced | 54 |
| Schonfeld Strategic Advisors | 3 | 22.5K | 0 | +22.5K | — | 0.0% | New | 53 |
| Capstone Investment Advisors | 3 | 9.7K | 0 | +9.7K | — | 0.0% | New | 53 |
| Jain Global | 3 | 8.1K | 0 | +8.1K | — | 0.0% | New | 52 |
| Brevan Howard Capital Management | 3 | 28.8K | 0 | +28.8K | — | 0.0% | New | 51 |
| Engineers Gate | 4 | 0 | 52.6K | -52.6K | -100.0% | 0.0% | Sold Out | 50 |
| Graham Capital Management | 3 | 0 | 2.8K | -2.8K | -100.0% | 0.0% | Sold Out | 49 |
| Portolan Capital Management | 3 | 82.4K | 10.7K | +71.7K | +670.5% | 0.2% | Increased | 49 |
| ExodusPoint Capital Management | 3 | 8.6K | 115.3K | -106.8K | -92.6% | 0.0% | Reduced | 47 |
| AQR Capital Management | 3 | 27.9K | 7.8K | +20.2K | +259.3% | 0.0% | Increased | 47 |
| Man Group | 3 | 11.3K | 158.4K | -147.1K | -92.8% | 0.0% | Reduced | 46 |
| Walleye Capital | 3 | 264 | 2.2K | -1.9K | -88.1% | 0.0% | Reduced | 42 |
| MILLENNIUM MANAGEMENT LLC | 2 | 248.3K | 306.1K | -57.8K | -18.9% | 0.0% | Reduced | 33 |
| Davidson Kempner Capital Management | 2 | 166.9K | 146.4K | +20.5K | +14.0% | 0.3% | Increased | 33 |
| Winton Group | 4 | 18.2K | 11.9K | +6.3K | +52.4% | 0.0% | Increased | 31 |
| Centiva Capital | 4 | 3.8K | 5.7K | -1.9K | -33.3% | 0.0% | Reduced | 26 |
| Trexquant Investment | 3 | 94.0K | 106.3K | -12.3K | -11.6% | 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.