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Of the 12 tracked institutions holding TMDX, 6 have a 3-year clone track record — 5 of them beat the S&P. Average holder's clone alpha: +4.0pt. It's a gauge of who owns the name, not just how many.
Among the 12 tracked institutional investors we monitor, TMDX (TRANSMEDICS GROUP INC) is held with a combined value of $1.76B across 16,884,062 shares. The largest holder is BlackRock, Inc. with a position worth $526.21M. 5 funds increased their holdings. 7 funds reduced their position.
Total Institutional Value
$1.76B
Total Shares Held
16,884,062
Institutional Holders
12
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $526.21M | 0.01% | -1.9% |
| 2 | FMR LLC | $506.62M | 0.03% | +0.4% |
| 3 | VANGUARD GROUP INC | $438.58M | 0.01% | -0.0% |
| 4 | STATE STREET CORP | $131.17M | 0.00% | +3.5% |
| 5 | WELLINGTON MANAGEMENT GROUP LLP | $48.36M | 0.01% | +12.3% |
| 6 | PRICE T ROWE ASSOCIATES INC /MD/ | $34.46M | 0.00% | -39.2% |
| 7 | MILLENNIUM MANAGEMENT LLC | $31.00M | 0.01% | +60.0% |
| 8 | BAILLIE GIFFORD & CO | $30.34M | 0.03% | -3.6% |
| 9 | CITADEL ADVISORS LLC | $6.12M | 0.00% | -57.0% |
| 10 | Gotham Asset Management, LLC | $3.76M | 0.01% | -7.5% |
As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of TMDX with a position worth $526.21M, representing 0.01% of their portfolio. In total, 12 institutional investors hold TMDX with a combined value of $1.76B.
Institutional investors hold $1.76B worth of TMDX stock across 12 positions. The largest institutional holder is BlackRock, Inc. with $526.21M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For TMDX, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their TMDX positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Last Close
$72.26
2026-07-24
YTD
-41.1%
12% of 52-week range
