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Of the 12 tracked institutions holding STRO, 6 have a 3-year clone track record — 6 of them beat the S&P. Average holder's clone alpha: +6.8pt. It's a gauge of who owns the name, not just how many.
Among the 12 tracked institutional investors we monitor, STRO (SUTRO BIOPHARMA INC) is held with a combined value of $63.21M across 2,738,695 shares. The largest holder is RA CAPITAL MANAGEMENT, L.P. with a position worth $17.82M (0.19% of their portfolio). 2 funds opened new positions in the most recent quarter. 4 funds increased their holdings. 5 funds reduced their position.
Total Institutional Value
$63.21M
Total Shares Held
2,738,695
Institutional Holders
12
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | RA CAPITAL MANAGEMENT, L.P. | $17.82M | 0.19% | New |
| 2 | Point72 Asset Management, L.P. | $17.24M | 0.03% | +286.5% |
| 3 | BlackRock, Inc. | $5.80M | 0.00% | +98.1% |
| 4 | MILLENNIUM MANAGEMENT LLC | $5.24M | 0.00% | -49.7% |
| 5 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $4.98M | 0.01% | - |
| 6 | VANGUARD GROUP INC | $4.35M | 0.00% | New |
| 7 | CITADEL ADVISORS LLC | $2.93M | 0.00% | +266.3% |
| 8 | RENAISSANCE TECHNOLOGIES LLC | $2.44M | 0.00% | -20.4% |
| 9 | STATE STREET CORP | $1.30M | 0.00% | +52.1% |
| 10 | Fisher Asset Management, LLC | $879.20K | 0.00% | -0.0% |
As of the latest SEC 13F filings, RA CAPITAL MANAGEMENT, L.P. is the largest institutional holder of STRO with a position worth $17.82M, representing 0.19% of their portfolio. In total, 12 institutional investors hold STRO with a combined value of $63.21M.
In the most recent quarter, 2 funds opened a new position in STRO. Additionally, 4 increased their holdings and 5 reduced their positions.
Institutional investors hold $63.21M worth of STRO stock across 12 positions. The largest institutional holder is RA CAPITAL MANAGEMENT, L.P. with $17.82M 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 STRO, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their STRO 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
$22.88
2026-07-24
YTD
+108.8%
46% of 52-week range
