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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, Q4 2022

Institutional positions in Octave Specialty Group Inc as of Dec 31, 2022. 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
167
+16 vs. Q3 2022
Shares held
34.5M
+3.14M (+10.0%) vs. Q3 2022
Total value
$600.4M
+$200.8M (+50.2%) vs. Q3 2022
New holders
41
56 more added
Sold out
25
41 more reduced

3 institutions that held it in Q3 2022 haven't filed for Q4 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2022: 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 holdersQ4 2022: 167 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 heldQ4 2022: $600.4M
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, Q4 2022

Shares, value and share of portfolio for each institution holding Octave Specialty Group Inc; share changes are against Q3 2022.

Institutions holding OSG in Q4 2022
InstitutionSharesValue% of portfolioChange in sharesAction
BlackRock Inc.6,663,545$116.2M0.00%+172,100+2.7%Added
Vanguard Group Inc4,987,974$87.0M0.00%+235,544+5.0%Added
Repertoire Partners LP2,000,000$34.9M21.78%+892,034+80.5%Added
FMR LLC1,990,160$34.7M0.00%00.0%Unchanged
State Street Corp1,667,496$29.1M0.00%+48,508+3.0%Added
Dimensional Fund Advisors LP1,522,469$26.6M0.01%+41,660+2.8%Added
Boussard & Gavaudan Investment Management LLP1,144,140$19.4M2.14%+191,183+20.1%Added
Geode Capital Management, LLC810,842$14.1M0.00%+12,564+1.6%Added
Bracebridge Capital, LLC799,234$13.9M5.29%00.0%Unchanged
Charles Schwab Investment Management Inc678,133$11.8M0.00%−4,068−0.6%Reduced
Goldman Sachs Group Inc512,535$8.94M0.00%−180,022−26.0%Reduced
Northern Trust Corp499,171$8.71M0.00%+8,889+1.8%Added
Invesco Ltd.478,653$8.35M0.00%+223,877+87.9%Added
Bank of New York Mellon Corp475,286$8.29M0.00%+70,041+17.3%Added
Nuveen Asset Management, LLC470,397$8.20M0.00%+158,458+50.8%Added
Millennium Management LLC458,086$7.99M0.01%+434,005+1,802.3%Added
AQR Capital Management LLC398,106$6.94M0.02%+398,106New
UBS Group AG387,770$6.76M0.00%+376,179+3,245.4%Added
Morgan Stanley342,037$5.97M0.00%+8,490+2.5%Added
Norges Bank323,400$5.64M0.00%+323,400New
Citadel Advisors LLC317,288$5.53M0.01%+151,576+91.5%Added
Deutsche Bank AG303,075$5.29M0.00%+135,396+80.7%Added
D. E. Shaw & Co., Inc.290,581$5.07M0.01%+113,400+64.0%Added
Healthcare of Ontario Pension Plan Trust Fund284,525$4.96M0.03%+183,200+180.8%Added
Principal Financial Group Inc274,762$4.79M0.00%−2,284−0.8%Reduced
Hillsdale Investment Management Inc.257,100$4.48M0.38%+257,100New
Harbor Advisors LLC251,382$4.38M1.09%00.0%Unchanged
HSBC Holdings PLC248,032$4.21M0.01%+8,411+3.5%Added
Two Seas Capital LP240,526$4.19M3.98%−85,000−26.1%Reduced
Bridgeway Capital Management, LLC225,000$3.92M0.10%+225,000New
Allianz Asset Management GmbH221,884$3.87M0.01%+221,884New
Gator Capital Management, LLC184,417$3.22M2.36%−191,848−51.0%Reduced
Wells Fargo & Company179,608$3.13M0.00%+1,345+0.8%Added
Ameriprise Financial Inc175,688$3.06M0.00%−4,317−2.4%Reduced
Algert Global LLC161,834$2.82M0.16%+35,680+28.3%Added
Rhumbline Advisers140,978$2.46M0.00%+1,771+1.3%Added
Russell Investments Group, Ltd.127,666$2.23M0.00%+23,100+22.1%Added
American Century Companies Inc119,564$2.09M0.00%+93,521+359.1%Added
JPMorgan Chase & Co115,459$2.01M0.00%−227,559−66.3%Reduced
Los Angeles Capital Management LLC112,500$1.96M0.01%+112,500New
Cubist Systematic Strategies, LLC110,918$1.93M0.02%−5,418−4.7%Reduced
Tudor Investment Corp Et Al110,791$1.93M0.05%+45,913+70.8%Added
Legal & General Group Plc109,975$1.92M0.00%+2,139+2.0%Added
Swiss National Bank108,500$1.89M0.00%+1,700+1.6%Added
Gendell Jeffrey L100,000$1.74M0.15%+100,000New
Winton Group Ltd95,429$1.66M0.11%+73,234+330.0%Added
Caxton Associates LP92,522$1.61M0.12%+26,208+39.5%Added
Thrivent Financial for Lutherans89,376$1.56M0.00%+42,897+92.3%Added
Brandywine Global Investment Management, LLC85,614$1.49M0.01%+35,495+70.8%Added
Public Sector Pension Investment Board82,418$1.44M0.01%00.0%Unchanged
Bank of America Corp82,056$1.43M0.00%−4,848−5.6%Reduced
Bluefin Capital Management, LLC78,509$1.37M0.24%+21,439+37.6%Added
Prudential Financial Inc72,392$1.26M0.00%+27,320+60.6%Added
HRT Financial LP70,137$1.22M0.02%+70,137New
Salzhauer Michael66,821$1.17M0.70%+553+0.8%Added
Marshall Wace, LLP66,029$1.15M0.00%+66,029New
Gsa Capital Partners LLP65,425$1.14M0.14%+38,413+142.2%Added
LPL Financial LLC64,641$1.13M0.00%−15,392−19.2%Reduced
Exchange Traded Concepts, LLC63,735$1.11M0.03%+2,124+3.4%Added
Credit Suisse AG62,840$1.10M0.00%+3,260+5.5%Added
Verition Fund Management LLC61,421$1.07M0.02%−78,789−56.2%Reduced
Arrowstreet Capital, Limited Partnership59,868$1.04M0.00%+59,868New
Graham Capital Management, L.P.58,939$1.03M0.04%−23,907−28.9%Reduced
California State Teachers Retirement System56,733$989.4K0.00%+505+0.9%Added
Clear Harbor Asset Management, LLC56,500$985.4K0.12%−7,900−12.3%Reduced
Interval Partners, LP54,773$955.2K0.08%−83,769−60.5%Reduced
Trexquant Investment LP51,327$895.1K0.03%+27,071+111.6%Added
Janney Montgomery Scott LLC49,996$872.0K0.00%+49,996New
Barclays PLC48,827$851.5K0.00%−540,746−91.7%Reduced
SG Americas Securities, LLC48,196$841.0K0.01%+48,196New
Commonwealth of Pennsylvania Public School Empls Retrmt Sys48,129$839.0K0.01%+7,162+17.5%Added
New York State Teachers Retirement System47,430$827.0K0.00%−200−0.4%Reduced
Great West Life Assurance Co45,693$797.0K0.00%−5,488−10.7%Reduced
Penserra Capital Management LLC45,105$786.0K0.02%+45,105New
Parallax Volatility Advisers, L.P.44,029$767.9K0.02%−42,632−49.2%Reduced
Voloridge Investment Management, LLC43,918$765.9K0.00%+43,918New
BNP Paribas Arbitrage, SA43,577$760.0K0.00%−96,739−68.9%Reduced
Alliancebernstein L.P.40,947$714.1K0.00%−359−0.9%Reduced
Redwood Investment Management, LLC40,000$698.0K0.09%00.0%Unchanged
Price T Rowe Associates Inc38,159$665.0K0.00%−5,736−13.1%Reduced
New York State Common Retirement Fund32,564$567.9K0.00%+164+0.5%Added
Citigroup Inc32,065$559.2K0.00%+10,755+50.5%Added
State of Alaska, Department of Revenue31,314$546.0K0.01%+185+0.6%Added
ExodusPoint Capital Management, LP30,931$539.0K0.01%+30,931New
Truist Financial Corp30,700$535.4K0.00%+30,700New
Texas Permanent School Fund30,086$525.0K0.01%−2,093−6.5%Reduced
Yousif Capital Management, LLC28,468$496.5K0.01%−8,280−22.5%Reduced
Mraz, Amerine & Associates, Inc.28,030$488.8K0.12%−2,500−8.2%Reduced
Jump Financial, LLC26,600$463.9K0.02%+26,600New
Franklin Resources Inc25,970$452.9K0.00%+25,970New
Comerica Bank26,527$448.0K0.00%−7,970−23.1%Reduced
Wellington Management Group LLP24,839$433.2K0.00%+24,839New
Versor Investments LP24,700$430.8K0.04%+24,700New
MetLife Investment Management24,566$428.4K0.00%00.0%Unchanged
Engineers Gate Manager LP24,367$425.0K0.03%+24,367New
Quadrature Capital Ltd24,218$422.5K0.01%+24,218New
American International Group, Inc.24,111$420.5K0.00%−190−0.8%Reduced
Voya Investment Management LLC23,713$413.6K0.00%+5,737+31.9%Added
Quantbot Technologies LP21,433$373.8K0.03%+21,433New
Louisiana State Employees Retirement System21,400$373.0K0.01%−100−0.5%Reduced