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Disclosery

OSG OCTAVE SPECIALTY GROUP INC

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COM NEW (common), issuer CIK 874501

144 managers (144 13F filers) reported a position in OSG shares at 2025-12-31, 34,704,270 shares in all. 30 filers opened a position and 15 filers sold out during the quarter.

Managers
144
13F filers
144
New
30
Added
25
Reduced
69
Sold out
15
Shares held by filers
34,704,270

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

The latest Form 4 transactions, non-derivative.
OwnerDateSharesPriceFiling
LeBlanc Claudedirector, officer (Chief Executive Officer)2026-10-03-11,638 F$4.6Form 4
LeBlanc Claudedirector, officer (Chief Executive Officer)2026-10-03+11,628 MForm 4
LeBlanc Claudedirector, officer (Chief Executive Officer)2026-10-03-8,421 F$4.6Form 4
LeBlanc Claudedirector, officer (Chief Executive Officer)2026-10-03+15,229 MForm 4
Smith R Sharonofficer (Exec VP & Group COO)2026-10-03-2,539 F$4.6Form 4
Smith R Sharonofficer (Exec VP & Group COO)2026-10-03+2,539 MForm 4
Trick Davidofficer (Exec VP, CFO & Treasurer)2026-10-03-3,047 F$4.6Form 4
Trick Davidofficer (Exec VP, CFO & Treasurer)2026-10-03+3,047 MForm 4

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.4,488,468$34.9M<0.01%-4,86313F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC2,508,395$19.5M<0.01%-46,78613F-HRTimelineGroup
Western Standard LLC2,504,627$19.5M8.99%-136,72413F-HRTimeline
Wolf Hill Capital Management, LPin group Wolf Hill Capital Management,…1,888,973$14.7M1.71%+730,77613F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP1,685,627$13.1M<0.01%-455,42013F-HRTimelineGroup
GENDELL JEFFREY Lin group GENDELL JEFFREY L1,569,472$12.2M0.21%-295,04013F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC1,520,654$11.8M0.01%+671,47213F-HRTimelineGroup
Bain Capital Credit, LPin group Bain Capital Life Sciences In…1,108,012$8.62M2.25%013F-HRTimelineGroup
Caption Management, LLC1,071,094$8.33M0.37%-50,08513F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,024,547$7.97M<0.01%-36,04713F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP943,368$7.34M<0.01%-23,82013F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY938,712$7.3M<0.01%+744,58813F-HR/ATimelineGroup
Prescott Group Capital Management, L.L.…893,517$6.95M0.65%-2,46013F-HRTimeline
Nuveen, LLCin group TIAA810,279$6.3M<0.01%-269,04913F-HRTimelineGroup
THIRD AVENUE MANAGEMENT LLC782,093$6.08M1.11%+178,70213F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC779,975$6.07M<0.01%+255,08513F-HR/ATimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP748,572$5.82M0.01%+293,49813F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC680,441$5.29M<0.01%+10,92813F-HRTimelineGroup
Bracebridge Capital, LLC579,234$4.51M1.64%013F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…526,588$4.1M0.01%+252,27813F-HRTimelineGroup
ESSEX INVESTMENT MANAGEMENT CO LLC410,822$3.2M0.49%new13F-HRTimeline
SG Americas Securities, LLC403,237$3.14M<0.01%+327,82213F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co361,424$2.81M<0.01%-21,14813F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…346,258$2.69M<0.01%+341,34213F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/330,901$2.57M<0.01%+127,69913F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP323,146$2.51M<0.01%-38,87513F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC303,282$2.36M<0.01%-397,61313F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC287,283$2.24M<0.01%+115,74013F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC245,387$1.91M0.04%-74,10613F-HRTimeline
JACOBS LEVY EQUITY MANAGEMENT, INC237,185$1.85M0.01%new13F-HRTimeline
Arrowpoint Investment Partners (Singapo…in group Arrowpoint Investment Partner…203,011$1.58M0.23%013F-HRTimelineGroup
Harbor Advisors LLC196,382$1.53M0.23%013F-HRTimeline
VELA Investment Management, LLC178,752$1.39M0.38%-1,33713F-HR/ATimeline
Schonfeld Strategic Advisors LLC169,824$1.32M0.01%-378,61813F-HRTimeline
Invesco Ltd.in group Invesco Ltd.156,504$1.22M<0.01%-7,57713F-HRTimelineGroup
UBS Group AGin group UBS Group AG153,864$1.2M<0.01%-125,62513F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO152,695$1.19M<0.01%+118,14013F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp138,173$1.07M<0.01%-51413F-HRTimelineGroup
Legato Capital Management LLC132,620$1.03M0.09%new13F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC123,599$962K<0.01%-9,04913F-HRTimelineGroup
HRT FINANCIAL LP111,702$869K<0.01%new13F-HRTimeline
ExodusPoint Capital Management, LP109,765$854K0.01%+95,60613F-HRTimeline
Cruiser Capital Advisors, LLC107,140$834K0.71%-4,66013F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.103,544$806K<0.01%new13F-HRTimelineGroup
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC92,040$713K<0.01%-11,62813F-HR/ATimelineGroup
Walleye Capital LLCin group Walleye Capital LLC88,284$687K<0.01%new13F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS86,734$675K<0.01%-2,41313F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN85,734$667K<0.01%+11,87713F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC85,213$663K0.01%new13F-HRTimelineGroup
Engineers Gate Manager LP81,585$635K0.01%new13F-HRTimeline
Quantinno Capital Management LP78,678$612K<0.01%+38,32513F-HRTimeline
NORGES BANK75,000$584K<0.01%new13F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/70,941$552K<0.01%013F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC70,128$546K<0.01%-12,43413F-HRTimelineGroup
Connor, Clark & Lunn Investment Managem…68,773$535K<0.01%-36,69213F-HRTimeline
Creative Planningin group Creative Planning68,537$533K<0.01%-21,76613F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO66,718$519K<0.01%new13F-HRTimelineGroup
Diametric Capital, LP66,478$517K0.14%+1,85213F-HRTimeline
CAXTON ASSOCIATES LLP65,647$511K0.01%013F-HRTimeline
DLD Asset Management, LP60,421$470K0.05%-18,87913F-HRTimeline
RHUMBLINE ADVISERS57,471$447K<0.01%-9,69913F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC54,340$423K<0.01%-2,28513F-HRTimelineGroup
Calamos Advisors LLCin group Calamos Advisors LLC49,089$382K<0.01%new13F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP45,044$350K<0.01%new13F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.44,126$343K<0.01%-74,59913F-HRTimelineGroup
Y-Intercept (Hong Kong) Ltd43,781$341K0.01%-106,70813F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management42,917$334K<0.01%-38,30413F-HRTimelineGroup
FOX RUN MANAGEMENT, L.L.C.42,354$330K0.05%new13F-HRTimeline
AXQ CAPITAL, LP40,374$314K0.07%new13F-HRTimeline
ALLIANCEBERNSTEIN L.P.37,530$292K<0.01%013F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd31,058$242K0.01%new13F-HRTimelineGroup
PEAK6 LLCin group PEAK6 LLC30,478$237K0.01%new13F-HR/ATimelineGroup
IMC-Chicago, LLC26,303$205K<0.01%-71,11913F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\25,647$200K<0.01%-506,49113F-HRTimelineGroup
OXFORD ASSET MANAGEMENT LLP25,413$198K0.07%new13F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
RENAISSANCE TECHNOLOGIES LLC25,158$196K<0.01%-64,04213F-HRTimeline
Metis Global Partners, LLC25,136$196K<0.01%new13F-HRTimeline
KLCM Advisors, Inc.23,900$186K0.02%-10013F-HRTimeline
CIBC Asset Management Inc23,893$186K<0.01%new13F-HRTimeline
Aquatic Capital Management LLC23,067$179K0.01%+10,47913F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC23,053$179K<0.01%new13F-HRTimelineGroup
Quadrature Capital Ltdin group Quadrature Capital Ltd21,219$165K<0.01%new13F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC21,038$164K<0.01%-1,48213F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…21,033$164K<0.01%-14,45213F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…19,956$155K<0.01%+1,60313F-HRTimelineGroup
Virtu Financial LLCin group Virtu Financial LLC19,235$150K0.01%new13F-HRTimelineGroup
State of Wyoming19,249$150K0.02%+16,66013F-HRTimeline
Quantbot Technologies LP19,241$150K<0.01%new13F-HRTimeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…19,152$149K<0.01%-90013F-HRTimelineGroup
Mraz, Amerine & Associates, Inc.18,950$147K0.02%+70013F-HRTimeline
Verition Fund Management LLC17,500$136K<0.01%-3,03313F-HRTimeline
Quarry LP15,103$118K0.02%-10,89713F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…12,630$98.3K<0.01%013F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …12,594$98K<0.01%-1,193,75613F-HRTimelineGroup
nVerses Capital, LLC12,181$94.8K0.21%new13F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources11,959$93K<0.01%-5,12113F-HRTimelineGroup
Police & Firemen's Retirement System of…11,825$92K<0.01%013F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC11,332$88.2K<0.01%-15813F-HRTimelineGroup
Voleon Capital Management LP11,204$87.2K<0.01%new13F-HRTimeline
Crown Wealth Group, LLC11,162$86.8K0.02%new13F-HRTimeline
Inscription Capital, LLC10,800$84K0.01%new13F-HRTimeline
PRELUDE CAPITAL MANAGEMENT, LLC10,643$82.8K0.01%-7,23513F-HRTimeline
SIMPLEX TRADING, LLC10,611$82.6K<0.01%-10,26713F-HRTimeline
AlphaQuest LLC10,158$79K<0.01%new13F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND10,073$78.4K<0.01%013F-HRTimeline
Kemnay Advisory Services Inc.8,059$62.7K0.01%new13F-HRTimeline
CITIGROUP INCin group CITIGROUP INC7,098$55.2K<0.01%-2,24313F-HRTimelineGroup
CWM, LLCin group CWM, LLC5,598$44K<0.01%-1,36313F-HRTimelineGroup
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.4,420$34.4K<0.01%013F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc3,839$29.9K<0.01%013F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…3,648$28.4K<0.01%013F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…2,539$19.8K<0.01%-43513F-HRTimeline
FMR LLCin group FMR LLC2,517$19.6K<0.01%-1,522,90613F-HRTimelineGroup
Sterling Capital Management LLC2,379$18.5K<0.01%-59913F-HRTimeline
QUADRANT CAPITAL GROUP LLC1,878$14.6K<0.01%-60513F-HRTimeline
Versant Capital Management, Inc1,823$14.2K<0.01%+20413F-HRTimeline
AMALGAMATED BANK1,297$10K<0.01%-27013F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA1,194$10K<0.01%-1,14913F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,277$9.94K<0.01%-1,11013F-HRTimelineGroup
HARBOR CAPITAL ADVISORS, INC.1,131$9K<0.01%-1913F-HRTimeline
MAI Capital Management1,069$8.32K<0.01%+513F-HRTimeline
Torren Management, LLC1,024$7.97K<0.01%13F-HRTimeline
NISA INVESTMENT ADVISORS, LLC970$7.55K<0.01%013F-HRTimeline
Wiser Advisor Group LLC500$3.89K<0.01%013F-HRTimeline
GAMMA Investing LLC431$3.35K<0.01%-19613F-HRTimeline
Capital Analysts, LLCin group Capital Analysts, LLC325$3K<0.01%013F-HR/ATimelineGroup
Optiver Holding B.V.in group Optiver Holding B.V.370$2.88K<0.01%-5413F-HRTimelineGroup
Allworth Financial LP291$2.26K<0.01%-9913F-HRTimeline
Arax Advisory Partners257$2K<0.01%-6,35713F-HRTimeline
SIGNATUREFD, LLC180$1.4K<0.01%-57413F-HRTimeline
DiNuzzo Private Wealth, Inc.177$1.38K<0.01%013F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC148$1.26K<0.01%new13F-HRTimeline
Parallel Advisors, LLC151$1.18K<0.01%-10913F-HRTimeline
Farther Finance Advisors, LLC122$949<0.01%+1713F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…113$878<0.01%-3013F-HRTimelineGroup
Advisors Asset Management, Inc.98$762<0.01%-313F-HR/ATimeline
US BANCORP \DE\in group US BANCORP \DE\81$630<0.01%-67413F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…58$451<0.01%-1413F-HRTimelineGroup
True Wealth Design, LLC45$351<0.01%-613F-HRTimeline
ROTHSCHILD INVESTMENT LLC32$249<0.01%-3013F-HRTimeline
IFP Advisors, Inc31$241<0.01%+1613F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.26$201<0.01%013F-HRTimelineGroup
Legacy Wealth Managment, LLC/IDin group Legacy Wealth Managment, LLC/…25$195<0.01%013F-HRTimelineGroup
SBI Securities Co., Ltd.10$78<0.01%-213F-HRTimeline

Events

  • LeBlanc Claude acquired 6,798 OSG shares on 2026-10-03, Form 4 filed 2026-10-06. 0001628280-26-065277

    Accepted , ingested

  • Smith R Sharon reported transactions in OSG shares with no net change in a Form 4 filed 2026-10-06. 0001628280-26-065275

    Accepted , ingested

  • Trick David reported transactions in OSG shares with no net change in a Form 4 filed 2026-10-06. 0001628280-26-065273

    Accepted , ingested