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Octave Specialty Group (OSG) Institutional Ownership

Octave Specialty Group logo
$4.75 +0.06 (+1.34%)
Closing price 10/13/2026 03:59 PM Eastern
Extended Trading
$4.78 +0.03 (+0.55%)
As of 10/13/2026 07:32 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Octave Specialty Group (NYSE:OSG)

Current
Institutional Ownership
Percentage
80.92%
Number of
Institutional Buyers
(last 12 months)
87
Total
Institutional Inflows
(last 12 months)
$195.12M
Number of
Institutional Sellers
(last 12 months)
21
Total
Institutional Outflows
(last 12 months)
$18.29M
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OSG Institutional Buying and Selling by Quarter

Octave Specialty Group Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/9/2026IPG Investment Advisors LLC303,930$1.90M0.3%-6.7%0.675%
9/9/2026Engineers Gate Manager LP25,500$159K0.0%-74.6%0.057%
8/27/2026Corient Private Wealth LP12,270$77K0.0%N/A0.027%
8/21/2026AXQ Capital LP10,652$66K0.0%-31.0%0.024%
8/21/2026Lone Peak Global Investors LLC107,676$672K0.1%N/A0.239%
8/18/2026Public Employees Retirement System of Ohio61,305$383K0.0%N/A0.136%
8/6/2026Bank of New York Mellon Corp134,966$842K0.0%N/A0.300%
7/2/2026 Versant Capital Management Inc8,360$52K0.0%N/A0.019%
6/16/2026Empowered Funds LLC114,004$530K0.0%-28.9%0.253%
6/3/2026Parallel Advisors LLC6,473$30K0.0%+4,186.8%0.014%
5/19/2026Bank of America Corp DE256,110$1.19M0.0%-22.6%0.569%
5/18/2026Empowered Funds LLC114,004$530K0.0%-28.9%0.253%
5/16/2026Quantinno Capital Management LP48,700$226K0.0%-38.1%0.108%
5/16/2026Lazard Asset Management LLC29,220$136K0.0%N/A0.065%
5/15/2026RIHO Partners LLC546,569$2.54M1.6%N/A1.214%
5/14/2026Renaissance Technologies LLC227,726$1.06M0.0%+805.2%0.506%
5/14/2026Public Employees Retirement System of Ohio68,805$320K0.0%N/A0.153%
5/14/2026Sei Investments Co.156,078$726K0.0%+133.9%0.347%
5/14/2026Walleye Capital LLC67,134$312K0.0%-47.7%0.149%
5/14/2026State of Wyoming28,784$134K0.0%+49.5%0.064%
5/7/2026Commonwealth Financial Services LLC29,008$135K0.0%N/A0.064%
5/7/2026Dimensional Fund Advisors LP1,310,132$6.09M0.0%-22.3%2.911%
5/7/2026Parallel Advisors LLC6,473$30K0.0%+4,186.8%0.014%
5/6/2026Aire Advisors LLC13,446$63K0.0%N/A0.030%
5/5/2026Bank of New York Mellon Corp130,471$607K0.0%-5.6%0.290%
4/30/2026Hsbc Holdings PLC102,430$476K0.0%+11.3%0.228%
4/25/2026Able Wealth Management LLC15,246$71K0.0%N/A0.034%
4/17/2026Anchyra Partners LLC16,328$76K0.0%N/A0.036%
4/16/2026SG Americas Securities LLC18,817$87K0.0%N/A0.042%
4/16/2026Quotient Wealth Partners LLC16,896$79K0.0%N/A0.038%
3/20/2026Hsbc Holdings PLC92,040$713K0.0%N/A0.205%
3/12/2026PEAK6 LLC30,478$237K0.0%N/A0.068%
2/23/2026Virtu Financial LLC19,235$150K0.0%N/A0.044%
2/19/2026Invesco Ltd.156,504$1.22M0.0%N/A0.357%
2/18/2026Empowered Funds LLC160,387$1.25M0.0%N/A0.366%
2/18/2026XTX Topco Ltd31,058$242K0.0%N/A0.071%
2/18/2026nVerses Capital LLC12,181$95K0.2%N/A0.028%
2/18/2026Quadrature Capital Ltd21,219$165K0.0%N/A0.048%
2/18/2026Oxford Asset Management LLP25,413$198K0.1%N/A0.058%
2/18/2026Millennium Management LLC303,282$2.36M0.0%N/A0.692%
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2/18/2026Engineers Gate Manager LP81,585$635K0.0%N/A0.186%
2/18/2026Balyasny Asset Management L.P.42,917$334K0.0%N/A0.098%
2/18/2026Bridgeway Capital Management LLC245,387$1.91M0.0%N/A0.560%
2/17/2026Schonfeld Strategic Advisors LLC169,824$1.32M0.0%N/A0.388%
2/17/2026AQR Capital Management LLC70,128$546K0.0%N/A0.160%
2/17/2026Jump Financial LLC85,213$663K0.0%N/A0.195%
2/17/2026Price T Rowe Associates Inc. MD70,941$552K0.0%N/A0.162%
2/17/2026Russell Investments Group Ltd.346,258$2.69M0.0%N/A0.790%
2/17/2026Kemnay Advisory Services Inc.8,059$63K0.0%N/A0.018%
2/17/2026ExodusPoint Capital Management LP109,765$854K0.0%N/A0.251%
2/16/2026Wolf Hill Capital Management LP1,888,973$14.70M1.6%N/A4.312%
2/16/2026Verition Fund Management LLC17,500$136K0.0%N/A0.040%
2/16/2026PEAK6 LLC30,478$237K0.0%N/A0.070%
2/16/2026Barclays PLC680,441$5.29M0.0%N/A1.553%
2/13/2026The Manufacturers Life Insurance Company 12,594$98K0.0%N/A0.029%
2/13/2026DLD Asset Management LP60,421$470K0.0%N/A0.138%
2/13/2026Gendell Jeffrey L1,569,472$12.21M0.2%N/A3.582%
2/13/2026Quarry LP15,103$118K0.0%N/A0.034%
2/13/2026Jacobs Levy Equity Management Inc.237,185$1.85M0.0%N/A0.541%
2/13/2026Essex Investment Management Co. LLC410,822$3.20M0.5%N/A0.938%
2/13/2026Charles Schwab Investment Management Inc.361,424$2.81M0.0%N/A0.825%
2/13/2026Police & Firemen s Retirement System of New Jersey11,825$92K0.0%N/A0.027%
2/13/2026State Street Corp943,368$7.34M0.0%N/A2.153%
2/13/2026Wells Fargo & Company MN85,734$667K0.0%N/A0.196%
2/12/2026Third Avenue Management LLC782,093$6.09M1.1%N/A1.785%
2/12/2026MetLife Investment Management LLC19,956$155K0.0%N/A0.046%
2/12/2026State Board of Administration of Florida Retirement System12,630$98K0.0%N/A0.029%
2/12/2026Renaissance Technologies LLC25,158$196K0.0%N/A0.057%
2/12/2026Dimensional Fund Advisors LP1,685,627$13.11M0.0%N/A3.848%
2/12/2026Federated Hermes Inc.4,420$34K0.0%N/A0.010%
2/12/2026Cruiser Capital Advisors LLC107,140$834K0.7%N/A0.245%
2/12/2026New York State Common Retirement Fund10,073$78K0.0%N/A0.023%
2/12/2026Nuveen LLC810,279$6.30M0.0%N/A1.850%
2/11/2026Empowered Funds LLC160,387$1.25M0.0%N/A0.366%
2/11/2026Metis Global Partners LLC25,136$196K0.0%N/A0.057%
2/11/2026Deutsche Bank AG25,647$200K0.0%N/A0.059%
2/11/2026Fox Run Management L.L.C.42,354$330K0.1%N/A0.097%
2/11/2026Cerity Partners LLC11,332$88K0.0%N/A0.026%
2/11/2026Franklin Resources Inc.11,959$93K0.0%N/A0.027%
2/11/2026Arrowpoint Investment Partners Singapore Pte. Ltd.203,011$1.58M0.2%N/A0.463%
2/11/2026State of Wyoming19,249$150K0.0%N/A0.044%
2/10/2026CIBC Asset Management Inc23,893$186K0.0%N/A0.055%
2/10/2026Goldman Sachs Group Inc.779,975$6.07M0.0%N/A1.780%
2/10/2026AXQ Capital LP40,374$314K0.1%N/A0.092%
2/10/2026Norges Bank75,000$584K0.0%N/A0.171%
2/10/2026Intech Investment Management LLC21,038$164K0.0%N/A0.048%
2/9/2026Geode Capital Management LLC1,024,547$7.97M0.0%N/A2.339%
2/6/2026Legato Capital Management LLC132,620$1.03M0.1%N/A0.303%
2/6/2026Mraz Amerine & Associates Inc.18,950$147K0.0%N/A0.043%
2/6/2026Prescott Group Capital Management L.L.C.893,517$6.95M0.6%N/A2.040%
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2/4/2026KLCM Advisors Inc.23,900$186K0.0%N/A0.055%
2/3/2026Western Standard LLC2,504,627$19.49M9.0%N/A5.717%
2/2/2026VELA Investment Management LLC178,752$1.39M0.3%N/A0.408%
1/30/2026Harbor Advisors LLC196,382$1.53M0.2%N/A0.448%
1/29/2026Inscription Capital LLC10,800$84K0.0%N/A0.025%
1/29/2026Calamos Advisors LLC49,089$382K0.0%N/A0.112%
1/28/2026Crown Wealth Group LLC11,162$87K0.0%N/A0.025%
1/26/2026CWM LLC5,598$44K0.0%N/A0.013%
1/9/2026SG Americas Securities LLC403,237$3.64M0.0%+434.7%0.920%
1/1/2026JPMorgan Chase & Co.34,555$288K0.0%+10.6%0.079%


OSG Institutional Ownership - Frequently Asked Questions

During the previous two years, 167 institutional investors and hedge funds held shares of Octave Specialty Group. The most heavily invested institutionals were Vanguard Group Inc. ($21.31M), Western Standard LLC ($19.49M), FMR LLC ($19.42M), Continental General Insurance Co. ($17.25M), Wolf Hill Capital Management LP ($14.70M), Gendell Jeffrey L ($12.21M), and Nuveen Asset Management LLC ($10.43M).Learn more on Octave Specialty Group's institutional investors.

80.92% of Octave Specialty Group's stock is owned by institutional investors. Learn more on OSG's institutional investor holdings.

Of the 149 institutional investors that purchased Octave Specialty Group's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Western Standard LLC ($5.60M), Wolf Hill Capital Management LP ($3.35M), Gendell Jeffrey L ($2.17M), Continental General Insurance Co. ($2.07M), Dimensional Fund Advisors LP ($1.69M), Prescott Group Capital Management L.L.C. ($1.59M), and Third Avenue Management LLC ($1.16M).

Institutional investors have bought a total of 25,006,277 shares in the last 24 months. This purchase volume represents approximately $195.12M in transactions.

Of the 21 institutional investors that sold Octave Specialty Group's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Dimensional Fund Advisors LP ($630.19K), Squarepoint Ops LLC ($424.15K), Tudor Investment Corp ET AL ($361.09K), Millennium Management LLC ($295.15K), Y Intercept Hong Kong Ltd ($200.21K), Empowered Funds LLC ($92.77K), and UBS Group AG ($80.78K).

Institutional investors have sold a total of 2,469,864 shares in the last 24 months. This volume of shares sold represents approximately $18.29M in transactions.


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Institutional ownership data for NYSE:OSG is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/9/2026. New 13F filings are added each quarter as they're published.
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