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Of the 9 tracked institutions holding OSG, 4 have a 3-year clone track record — 4 of them beat the S&P. Average holder's clone alpha: +5.7pt. It's a gauge of who owns the name, not just how many.
Among the 9 tracked institutional investors we monitor, OSG (OCTAVE SPECIALTY GROUP INC) is held with a combined value of $59.36M across 8,893,829 shares. The largest holder is BlackRock, Inc. with a position worth $28.53M. 4 funds increased their holdings. 5 funds reduced their position.
Total Institutional Value
$59.36M
Total Shares Held
8,893,829
Institutional Holders
9
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $28.53M | 0.00% | +16.7% |
| 2 | VANGUARD GROUP INC | $19.52M | 0.00% | -1.8% |
| 3 | STATE STREET CORP | $5.61M | 0.00% | -4.5% |
| 4 | CITADEL ADVISORS LLC | $2.64M | 0.00% | -2.1% |
| 5 | AQR CAPITAL MANAGEMENT LLC | $1.43M | 0.00% | +361.4% |
| 6 | RENAISSANCE TECHNOLOGIES LLC | $731.33K | 0.00% | -48.5% |
| 7 | PRICE T ROWE ASSOCIATES INC /MD/ | $728.00K | 0.00% | +14.4% |
| 8 | MILLENNIUM MANAGEMENT LLC | $122.37K | 0.00% | -85.5% |
| 9 | FMR LLC | $50.89K | 0.00% | +720.5% |
SEC Schedule 13D (activist) and 13G (passive) filings for OSG. Filed when an investor acquires 5%+ ownership.
As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of OSG with a position worth $28.53M, representing 0.00% of their portfolio. In total, 9 institutional investors hold OSG with a combined value of $59.36M.
Institutional investors hold $59.36M worth of OSG stock across 9 positions. The largest institutional holder is BlackRock, Inc. with $28.53M 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 OSG, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their OSG 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
$4.59
2026-08-18
YTD
-38.6%
11% of 52-week range
