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Octave Specialty Group Inc

OSG
Exchange
NYSE
Industry
Surety Insurance
SEC CIK
0000874501

No open-market purchases or sales by Octave Specialty Group Inc insiders were filed in the last 90 days; 147 institutions reported holding it in 13F filings for Q2 2026, worth $187.6M in total; no superinvestor holds it.

13F holders, Q1 2024

Institutional positions in Octave Specialty Group Inc as of Mar 31, 2024. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
172
−2 vs. Q4 2023
Shares held
37.9M
−294.2K (−0.8%) vs. Q4 2023
Total value
$591.5M
−$36.9M (−5.9%) vs. Q4 2023
New holders
17
46 more added
Sold out
19
70 more reduced

Compare with Q4 2023: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting OSG on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2024: 172 institutions
Q1 2021: 140 institutionsQ2 2021: 126 institutionsQ3 2021: 133 institutionsQ4 2021: 135 institutionsQ1 2022: 150 institutionsQ2 2022: 141 institutionsQ3 2022: 154 institutionsQ4 2022: 167 institutionsQ1 2023: 160 institutionsQ2 2023: 160 institutionsQ3 2023: 167 institutionsQ4 2023: 174 institutionsQ1 2024: 172 institutionsQ2 2024: 182 institutionsQ3 2024: 180 institutionsQ4 2024: 181 institutionsQ1 2025: 176 institutionsQ2 2025: 147 institutionsQ3 2025: 130 institutionsQ4 2025: 144 institutionsQ1 2026: 148 institutionsQ2 2026: 147 institutions
Value heldQ1 2024: $591.5M
Q1 2021: $611.7MQ2 2021: $565.0MQ3 2021: $516.2MQ4 2021: $598.9MQ1 2022: $392.1MQ2 2022: $386.6MQ3 2022: $400.7MQ4 2022: $600.4MQ1 2023: $596.2MQ2 2023: $529.6MQ3 2023: $438.7MQ4 2023: $628.4MQ1 2024: $591.5MQ2 2024: $495.9MQ3 2024: $449.6MQ4 2024: $522.4MQ1 2025: $327.5MQ2 2025: $262.5MQ3 2025: $303.6MQ4 2025: $270.0MQ1 2026: $151.4MQ2 2026: $187.6M
Institutions holding OSG and their total value by quarter
QuarterHoldersValue
Q2 2026147$187.6M
Q1 2026148$151.4M
Q4 2025144$270.0M
Q3 2025130$303.6M
Q2 2025147$262.5M
Q1 2025176$327.5M
Q4 2024181$522.4M
Q3 2024180$449.6M
Q2 2024182$495.9M
Q1 2024172$591.5M
Q4 2023174$628.4M
Q3 2023167$438.7M
Q2 2023160$529.6M
Q1 2023160$596.2M
Q4 2022167$600.4M
Q3 2022154$400.7M
Q2 2022141$386.6M
Q1 2022150$392.1M
Q4 2021135$598.9M
Q3 2021133$516.2M
Q2 2021126$565.0M
Q1 2021140$611.7M

Institutions, Q1 2024

Shares, value and share of portfolio for each institution holding Octave Specialty Group Inc; share changes are against Q4 2023.

Institutions holding OSG in Q1 2024
InstitutionSharesValue% of portfolioChange in sharesAction
Cresset Asset Management, LLC22,523$352.0K0.00%−14−0.1%Reduced
Louisiana State Employees Retirement System22,400$350.1K0.01%−200−0.9%Reduced
MetLife Investment Management22,132$345.9K0.00%−2,434−9.9%Reduced
Squarepoint Ops LLC21,276$332.5K0.00%−12,139−36.3%Reduced
Mraz, Amerine & Associates, Inc.21,100$329.8K0.06%−1,500−6.6%Reduced
Yousif Capital Management, LLC20,507$320.5K0.00%−8,913−30.3%Reduced
Janus Henderson Group PLC20,020$312.8K0.00%+10.0%Added
Centiva Capital, LP20,000$312.6K0.02%+20,000New
Interval Partners, LP19,292$301.5K0.01%−470−2.4%Reduced
Y-Intercept (Hong Kong) Ltd19,189$299.9K0.02%+19,189New
Comerica Bank18,768$293.3K0.00%−1,890−9.1%Reduced
Mirae Asset Global Investments Co., Ltd.18,835$280.1K0.00%−1,002−5.1%Reduced
Manufacturers Life Insurance Company, The16,861$263.5K0.00%+676+4.2%Added
Natixis Advisors, L.P.16,696$261.0K0.00%+16,696New
Walleye Capital LLC16,071$251.2K0.00%−77,543−82.8%Reduced
State Board of Administration of Florida Retirement System16,040$248.3K0.00%+3,410+27.0%Added
Maryland State Retirement & Pension System16,687$235.8K0.00%00.0%Unchanged
Amalgamated Bank14,706$230.0K0.00%−2,369−13.9%Reduced
KLCM Advisors, Inc.14,000$218.8K0.03%00.0%Unchanged
Pathstone Holdings, LLC13,399$209.4K0.00%+101+0.8%Added
Arizona State Retirement System12,421$194.1K0.00%−243−1.9%Reduced
Axq Capital, LP12,374$193.4K0.05%+12,374New
Teachers Retirement System of the State of Kentucky12,301$192.0K0.00%00.0%Unchanged
Oregon Public Employees Retirement Fund12,098$189.1K0.00%−1,100−8.3%Reduced
Envestnet Asset Management Inc11,431$178.7K0.00%−7,166−38.5%Reduced
State of Wyoming11,310$176.8K0.03%−801−6.6%Reduced
Everence Capital Management Inc10,910$171.0K0.01%00.0%Unchanged
Cornerstone Investment Partners, LLC10,807$168.9K0.01%00.0%Unchanged
Allspring Global Investments Holdings, LLC10,542$164.8K0.00%+5,145+95.3%Added
Long Focus Capital Management, LLC10,000$156.3K0.02%00.0%Unchanged
Federated Hermes, Inc.8,378$130.9K0.00%−67,756−89.0%Reduced
Zurcher Kantonalbank (Zurich Cantonalbank)8,189$128.0K0.00%00.0%Unchanged
Caption Management, LLC7,700$120.4K0.01%−117,510−93.9%Reduced
Amundi8,021$112.4K0.00%+2,015+33.5%Added
Royal Bank of Canada5,221$82.0K0.00%−11,228−68.3%Reduced
Ameritas Investment Partners, Inc.4,583$71.6K0.00%00.0%Unchanged
Tower Research Capital LLC (TRC)3,172$49.6K0.00%−7,637−70.7%Reduced
The PNC Financial Services Group, Inc.2,594$40.5K0.00%−19−0.7%Reduced
Metropolitan Life Insurance Co2,437$38.1K0.00%00.0%Unchanged
Advisor Group Holdings, Inc.2,306$36.0K0.00%−4,962−68.3%Reduced
Lazard Asset Management LLC1,434$22.0K0.00%+63+4.6%Added
Public Employees Retirement System of Ohio1,166$18.2K0.00%−4−0.3%Reduced
nVerses Capital, LLC800$12.5K0.03%+800New
Covestor Ltd778$12.0K0.01%−778−50.0%Reduced
US Bancorp624$9.75K0.00%−356−36.3%Reduced
Lindbrook Capital, LLC549$8.58K0.00%00.0%Unchanged
Wiser Advisor Group LLC500$7.82K0.01%00.0%Unchanged
Fifth Third Bancorp429$6.71K0.00%00.0%Unchanged
Huntington National Bank381$5.96K0.00%00.0%Unchanged
GAMMA Investing LLC339$5.30K0.00%+18+5.6%Added
Fortitude Family Office, LLC329$5.14K0.00%00.0%Unchanged
Bessemer Group Inc290$5.00K0.00%−3−1.0%Reduced
Capital Analysts, LLC325$5.00K0.00%00.0%Unchanged
Catalyst Funds Management Pty Ltd300$4.69K0.00%+300New
Quarry LP254$3.97K0.00%−99−28.0%Reduced
Pinnacle Holdings, LLC197$3.08K0.00%+197New
Quadrant Capital Group LLC193$3.02K0.00%−129−40.1%Reduced
Red Tortoise LLC180$2.81K0.00%00.0%Unchanged
DiNuzzo Private Wealth, Inc.177$2.77K0.00%00.0%Unchanged
Barrow Hanley Mewhinney & Strauss LLC150$2.34K0.00%00.0%Unchanged
Parallel Advisors, LLC84$1.31K0.00%00.0%Unchanged
Capital Advisors, Ltd. LLC55$1.00K0.00%00.0%Unchanged
Massmutual Trust Co FSB58$9070.00%00.0%Unchanged
Rothschild Investment LLC32$5000.00%00.0%Unchanged
Farmers & Merchants Investments Inc31$4850.00%00.0%Unchanged
Umb Bank N A30$4690.00%+30New
Cornerstone Planning Group LLC30$4410.00%+30New
Allworth Financial LP24$3760.00%00.0%Unchanged
Versant Capital Management, Inc19$2970.00%00.0%Unchanged
Parkside Financial Bank & Trust13$2040.00%00.0%Unchanged
Nelson, Van Denburg & Campbell Wealth Management Group, LLC8$1250.00%+8New
Farther Finance Advisors, LLC1$150.00%−1−50.0%Reduced
Man Group plc0$00.00%−52,817−100.0%Sold out
Teacher Retirement System of Texas0$00.00%−35,844−100.0%Sold out
Healthcare of Ontario Pension Plan Trust Fund0$00.00%−33,600−100.0%Sold out
Belvedere Trading LLC0$00.00%−21,266−100.0%Sold out
Graham Capital Management, L.P.0$00.00%−19,584−100.0%Sold out
HRT Financial LP0$00.00%−15,859−100.0%Sold out
Gsa Capital Partners LLP0$00.00%−15,183−100.0%Sold out
Balyasny Asset Management LLC0$00.00%−14,857−100.0%Sold out
Deerfield Management Company, L.P. (Series C)0$00.00%−12,673−100.0%Sold out
Schonfeld Strategic Advisors LLC0$00.00%−10,100−100.0%Sold out
Victory Capital Management Inc0$00.00%−10,000−100.0%Sold out
Gladius Capital Management LP0$00.00%−2,638−100.0%Sold out
Aquatic Capital Management LLC0$00.00%−2,100−100.0%Sold out
KBC Group NV0$00.00%−1,666−100.0%Sold out
Financial Management Professionals, Inc.0$00.00%−1,007−100.0%Sold out
AJOVista, LLC0$00.00%−626−100.0%Sold out
Robeco Institutional Asset Management B.V.0$00.00%−526−100.0%Sold out
West Tower Group, LLC0$00.00%−479−100.0%Sold out
Lee Financial Co0$00.00%−36−100.0%Sold out