TRANSMEDICS GROUP INC (TMDX) Institutional Ownership Changes & 13F Activity
TRANSMEDICS GROUP INC (TMDX). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Citadel Advisors Llc, Invesco Ltd., Two Sigma Investments, Lp, Goldman Sachs Group Inc, and Price T Rowe Associates Inc.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Anchor Investment Management, Llc | Buy | +75 | — | 75 | $4.98K | Q2 2026 | Sep 15, 2026 |
| Manufacturers Life Insurance Company, The | Buy | +1,925 | +12.6% | 17,159 | $1.14M | Q2 2026 | Sep 09, 2026 |
| M&T Bank Corp | Sell | -2,929 | -100.0% | 0 | $0.00 | Q2 2026 | Sep 04, 2026 |
| Parkside Financial Bank & Trust | Sell | -57 | -60.6% | 37 | $2.46K | Q2 2026 | Sep 04, 2026 |
| Citadel Advisors Llc | Buy | +497,223 | +807.2% | 558,824 | $37.12M | Q2 2026 | Sep 02, 2026 |
| Corient Private Wealth Llc | Buy | +10,644 | +123.2% | 19,285 | $1.28M | Q2 2026 | Aug 27, 2026 |
| Optimize Financial Inc | Sell | -11 | -0.3% | 3,408 | $226.36K | Q2 2026 | Aug 27, 2026 |
| California State Teachers Retirement System | Buy | +2,010 | +5.3% | 39,850 | $2.65M | Q2 2026 | Aug 24, 2026 |
| Fulcrum Asset Management Llp | Buy | +150 | — | 150 | $10.09K | Q2 2026 | Aug 18, 2026 |
| Empowered Funds, Llc | Buy | +48,154 | — | 48,154 | $3.20M | Q2 2026 | Aug 17, 2026 |
| Capstone Investment Advisors, Llc | Buy | +9,652 | — | 9,652 | $641.09K | Q2 2026 | Aug 17, 2026 |
| Invesco Ltd. | Buy | +394,979 | — | 394,979 | $26.23M | Q2 2026 | Aug 14, 2026 |
| Two Sigma Investments, Lp | Sell | -316,195 | -97.2% | 8,945 | $594.13K | Q2 2026 | Aug 14, 2026 |
| Goldman Sachs Group Inc | Sell | -306,511 | -35.4% | 559,771 | $37.18M | Q2 2026 | Aug 14, 2026 |
| Price T Rowe Associates Inc | Sell | -300,655 | -86.7% | 46,028 | $3.06M | Q2 2026 | Aug 14, 2026 |
| Braidwell Lp | Buy | +280,324 | +85.1% | 609,715 | $40.50M | Q2 2026 | Aug 14, 2026 |
| Point72 Asset Management, L.P. | Buy | +192,594 | — | 192,594 | $12.79M | Q2 2026 | Aug 14, 2026 |
| Frontier Capital Management Co Llc | Sell | -170,309 | -53.1% | 150,162 | $9.97M | Q2 2026 | Aug 14, 2026 |
| Davidson Kempner Capital Management Lp | Buy | +166,900 | — | 166,900 | $11.09M | Q2 2026 | Aug 14, 2026 |
| Man Group Plc | Sell | -147,082 | -92.8% | 11,327 | $752.34K | Q2 2026 | Aug 14, 2026 |
| Hrt Financial Lp | Buy | +132,004 | +398.8% | 165,106 | $10.97M | Q2 2026 | Aug 14, 2026 |
| Susquehanna International Group, Llp | Buy | +121,523 | +90.8% | 255,398 | $16.96M | Q2 2026 | Aug 14, 2026 |
| Exoduspoint Capital Management, Lp | Sell | -106,792 | -92.6% | 8,553 | $568.09K | Q2 2026 | Aug 14, 2026 |
| Ameriprise Financial Inc | Buy | +79,948 | — | 79,948 | $5.31M | Q2 2026 | Aug 14, 2026 |
| Dz Bank Ag Deutsche Zentral Genossenschafts Bank, Frankfurt Am Main | Buy | +75,090 | — | 75,090 | $4.99M | Q2 2026 | Aug 14, 2026 |
| Portolan Capital Management, Llc | Buy | +71,666 | +670.5% | 82,354 | $5.47M | Q2 2026 | Aug 14, 2026 |
| Millennium Management Llc | Sell | -57,768 | -18.9% | 248,312 | $16.49M | Q2 2026 | Aug 14, 2026 |
| Hood River Capital Management Llc | Buy | +51,363 | +7.3% | 751,133 | $49.89M | Q2 2026 | Aug 14, 2026 |
| Osaic Holdings, Inc. | Buy | +47,048 | +673.3% | 54,036 | $3.59M | Q2 2026 | Aug 14, 2026 |
| Barclays Plc | Buy | +47,037 | +24.7% | 237,615 | $15.78M | Q2 2026 | Aug 14, 2026 |
Frequently asked questions about TMDX activity
Which institutional owners are buying TMDX?
Institutional owners buying TMDX include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in TMDX activity?
"Buy" means an investor increased their reported position in TMDX compared to the prior reporting period. This reflects growing exposure to TRANSMEDICS GROUP INC (TMDX) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in TMDX increasing?
Institutional interest in TMDX can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
Related TMDX Institutional Insights
- TMDX Overview
- TMDX 13F Institutional Holders
- TMDX Top Institutional Shareholders
- Healthcare Sector Institutional Ownership
- Healthcare Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Healthcare Stocks By Institutional Investors
- Most Sold Healthcare Stocks By Institutional Investors
- TMDX Insider Trading & SEC Form 4 Activity
- TMDX Articles
- Top Institutional Investor Stock Rankings