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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 2021

Institutional positions in Octave Specialty Group Inc as of Mar 31, 2021. 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
140
No complete 13F data for Q4 2020
Shares held
36.5M
No complete 13F data for Q4 2020
Total value
$611.7M
No complete 13F data for Q4 2020

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 2021: 140 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 2021: $611.7M
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 2021

Shares, value and share of portfolio for each institution holding Octave Specialty Group Inc.

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.

Institutions holding OSG in Q1 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Parallel Advisors, LLC16$00.00%––
International Assets Investment Management, LLC25$00.00%––
Meeder Asset Management Inc52$1.00K0.00%––
Lee Financial Co36$1.00K0.00%––
Mitsubishi UFJ Trust & Banking Corp45$1.00K0.00%––
TCI Wealth Advisors, Inc.58$1.00K0.00%––
Graves-Light Private Wealth Management, Inc.35$1.00K0.00%––
Lindbrook Capital, LLC47$1.00K0.00%––
Eaton Vance Management196$3.00K0.00%––
Versant Capital Management, Inc199$3.00K0.00%––
US Bancorp292$5.00K0.00%––
Signaturefd, LLC312$5.00K0.00%––
Advisor Group Holdings, Inc.316$5.00K0.00%––
Macquarie Group Ltd514$9.00K0.00%––
The PNC Financial Services Group, Inc.759$12.0K0.00%––
Captrust Financial Advisors687$12.0K0.00%––
Steward Partners Investment Advisory, LLC863$14.4K0.00%––
Wealthcare Advisory Partners LLC1,200$20.0K0.00%––
Geneos Wealth Management Inc.1,429$24.0K0.00%––
Royal Bank of Canada1,914$32.0K0.00%––
Cutler Group LP2,609$43.0K0.00%––
BDO Wealth Advisors, LLC2,661$45.0K0.01%––
Tower Research Capital LLC (TRC)3,329$56.0K0.00%––
Ameritas Investment Partners, Inc.3,798$64.0K0.00%––
Public Employees Retirement System of Ohio3,994$67.0K0.00%––
Nisa Investment Advisors, LLC4,950$83.0K0.00%––
Mutual of America Capital Management LLC6,124$103.0K0.00%––
Zurcher Kantonalbank (Zurich Cantonalbank)6,830$114.0K0.00%––
SG Americas Securities, LLC7,454$125.0K0.00%––
Pinz Capital Management, LP7,500$126.0K0.03%––
Chilton Capital Management LLC10,000$167.0K0.01%––
Dynamic Technology Lab Private Ltd10,183$170.0K0.02%––
regents capital Ltd10,300$172.0K0.17%––
Teachers Retirement System of the State of Kentucky10,700$179.0K0.00%––
Bank of Montreal11,387$197.0K0.00%––
Gendell Jeffrey L11,967$200.0K0.02%––
MetLife Investment Management12,453$208.5K0.00%––
Metropolitan Life Insurance Co12,477$208.9K0.00%––
HighTower Advisors, LLC13,280$222.0K0.00%––
Arizona State Retirement System13,335$223.0K0.00%––
ProShare Advisors LLC13,470$225.0K0.00%––
Wellington Management Group LLP13,774$231.0K0.00%––
Wolverine Trading, LLC13,817$234.0K0.00%––
New York State Teachers Retirement System14,430$242.0K0.00%––
Simplex Trading, LLC14,517$243.0K0.01%––
Two Sigma Investments, LP14,960$250.0K0.00%––
HRT Financial LP15,297$256.0K0.00%––
Engineers Gate Manager LP15,575$261.0K0.01%––
Alpine Global Management, LLC15,799$264.0K0.03%––
Community Capital Management, Inc.16,000$268.0K0.30%––
State of Tennessee, Treasury Department16,343$274.0K0.00%––
Maven Securities LTD16,961$286.0K0.03%––
Oregon Public Employees Retirement Fund18,882$316.0K0.00%––
State Board of Administration of Florida Retirement System18,933$317.0K0.00%––
Louisiana State Employees Retirement System20,800$348.0K0.01%––
Voya Investment Management LLC20,829$349.0K0.00%––
Mraz, Amerine & Associates, Inc.21,100$353.0K0.10%––
Redwood Investment Management, LLC21,225$355.0K0.07%––
Walleye Trading LLC21,314$357.0K0.01%––
SEI Investments Co22,850$383.0K0.00%––
BNP Paribas Arbitrage, SA23,996$401.7K0.00%––
ExodusPoint Capital Management, LP24,392$408.0K0.01%––
Private Advisor Group, LLC24,898$417.0K0.00%––
Manufacturers Life Insurance Company, The25,297$423.0K0.00%––
HSBC Holdings PLC25,700$432.0K0.00%––
Kamunting Street Capital Management, L.P.27,500$460.0K0.26%––
Raymond James Financial Services Advisors, Inc.27,615$462.0K0.00%––
Boothbay Fund Management, LLC27,689$464.0K0.02%––
American International Group, Inc.30,236$506.0K0.00%––
State of Alaska, Department of Revenue31,032$519.0K0.01%––
Texas Permanent School Fund34,254$573.0K0.01%––
Raffles Associates LP34,993$586.0K0.60%––
Commonwealth of Pennsylvania Public School Empls Retrmt Sys35,360$592.0K0.01%––
Alliancebernstein L.P.35,730$598.0K0.00%––
Thrivent Financial for Lutherans37,664$630.0K0.00%––
Susquehanna International Group, LLP38,760$649.0K0.00%––
New York State Common Retirement Fund39,800$666.0K0.00%––
Great West Life Assurance Co39,955$669.0K0.00%––
Jane Street Group, LLC40,945$686.0K0.00%––
Susquehanna Fundamental Investments, LLC41,664$697.0K0.01%––
UBS Asset Management Americas Inc43,600$729.9K0.00%––
Comerica Bank46,330$794.0K0.00%––
Cubist Systematic Strategies, LLC48,755$816.0K0.01%––
Price T Rowe Associates Inc49,308$825.0K0.00%––
Prudential Financial Inc51,240$858.0K0.00%––
Royce & Associates LP53,000$887.0K0.01%––
Tudor Investment Corp Et Al54,628$914.0K0.02%––
Two Sigma Advisers, LP55,300$926.0K0.00%––
Ensign Peak Advisors, Inc57,500$963.0K0.00%––
Arrowstreet Capital, Limited Partnership61,363$1.03M0.00%––
Clear Harbor Asset Management, LLC67,900$1.14M0.15%––
California State Teachers Retirement System68,260$1.14M0.00%––
Verition Fund Management LLC72,048$1.21M0.02%––
Parametric Portfolio Associates LLC74,593$1.25M0.00%––
Caption Management, LLC76,800$1.29M0.17%––
UBS Group AG89,990$1.51M0.00%––
California Public Employees Retirement System92,600$1.55M0.00%––
Citadel Advisors LLC92,629$1.55M0.00%––
Millennium Management LLC103,494$1.73M0.00%––
Swiss National Bank103,800$1.74M0.00%––