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Of the 10 tracked institutions holding MRX, 4 have a 3-year clone track record — 4 of them beat the S&P. Average holder's clone alpha: +5.3pt. It's a gauge of who owns the name, not just how many.
Among the 10 tracked institutional investors we monitor, MRX (MAREX GROUP PLC) is held with a combined value of $534.22M across 12,039,093 shares. The largest holder is BlackRock, Inc. with a position worth $195.68M. 6 funds increased their holdings. 4 funds reduced their position.
Total Institutional Value
$534.22M
Total Shares Held
12,039,093
Institutional Holders
10
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $195.68M | 0.00% | +10.7% |
| 2 | FMR LLC | $155.22M | 0.01% | +160.9% |
| 3 | PRICE T ROWE ASSOCIATES INC /MD/ | $84.97M | 0.01% | +23.1% |
| 4 | STATE STREET CORP | $38.94M | 0.00% | +4.0% |
| 5 | WELLINGTON MANAGEMENT GROUP LLP | $29.22M | 0.01% | -13.7% |
| 6 | VANGUARD GROUP INC | $15.34M | 0.00% | -14.6% |
| 7 | CITADEL ADVISORS LLC | $7.73M | 0.01% | +92.6% |
| 8 | RENAISSANCE TECHNOLOGIES LLC | $3.59M | 0.01% | -63.5% |
| 9 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $2.14M | 0.00% | -96.3% |
| 10 | AQR CAPITAL MANAGEMENT LLC | $1.38M | 0.00% | +22.3% |
As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of MRX with a position worth $195.68M, representing 0.00% of their portfolio. In total, 10 institutional investors hold MRX with a combined value of $534.22M.
Institutional investors hold $534.22M worth of MRX stock across 10 positions. The largest institutional holder is BlackRock, Inc. with $195.68M 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 MRX, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their MRX 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
$65.56
2026-07-24
YTD
+72.8%
89% of 52-week range
