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Disclosery

OSG OCTAVE SPECIALTY GROUP INC

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COM NEW (common), issuer CIK 874501

175 managers (177 13F filers) reported a position in OSG shares at 2025-03-31, 37,548,351 shares in all. 32 filers opened a position and 37 filers sold out during the quarter.

Managers
175
13F filers
177
New
32
Added
53
Reduced
59
Sold out
37
Shares held by filers
37,548,351

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, Q1 2025

Filers in the available 13F reports with a share position at 2025-03-31, 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.4,894,680$42.8M<0.01%-3,065,83313F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC2,660,882$23.3M<0.01%-555,16613F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP2,556,880$22.4M0.01%-149,27113F-HRTimelineGroup
FMR LLCin group FMR LLC1,535,671$13.4M<0.01%-79,35913F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…1,180,557$10.3M0.02%+425,59213F-HRTimelineGroup
Repertoire Partners LP1,173,874$10.3M66.64%-987,75613F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC1,102,722$9.65M0.01%+723,71213F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,094,946$9.58M<0.01%+48,43613F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP1,032,294$9.03M<0.01%-761,74813F-HRTimelineGroup
Bain Capital Credit, LPin group Bain Capital Life Sciences In…1,108,012$8.73M2.13%013F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY858,040$7.51M<0.01%+360,08513F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC856,261$7.49M<0.01%-73,08413F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC724,094$6.34M0.01%+407,91813F-HR/ATimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\723,250$6.33M<0.01%+48,11713F-HRTimelineGroup
Western Standard LLC699,352$6.12M3.6%+245,82213F-HRTimeline
Wolf Hill Capital Management, LPin group Wolf Hill Capital Management,…693,444$6.07M0.55%-306,55913F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC680,179$5.95M<0.01%-505,52113F-HR/ATimelineGroup
GENDELL JEFFREY Lin group GENDELL JEFFREY L602,286$5.27M0.23%+74,74813F-HRTimelineGroup
Bracebridge Capital, LLC579,234$5.07M3.2%013F-HRTimeline
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC557,680$4.88M0.02%-279,97013F-HRTimeline
Schonfeld Strategic Advisors LLC522,484$4.57M0.03%new13F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC508,686$4.45M<0.01%+299,09413F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC489,746$4.29M<0.01%+59,88513F-HR/ATimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP461,256$4.04M<0.01%-75,23013F-HRTimelineGroup
Prescott Group Capital Management, L.L.…442,364$3.87M0.56%+247,46213F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.411,470$3.6M<0.01%-19,66513F-HRTimelineGroup
HRT FINANCIAL LP401,272$3.51M0.02%+293,71513F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co378,764$3.31M<0.01%-126,36213F-HR/ATimelineGroup
THIRD AVENUE MANAGEMENT LLC366,461$3.21M0.64%+136,04513F-HRTimeline
Caption Management, LLC363,082$3.18M0.15%+90,60513F-HRTimeline
GROUP ONE TRADING LLC341,468$2.99M0.12%+325,35213F-HRTimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC305,127$2.67M0.07%+13,49413F-HRTimeline
Walleye Capital LLCgroup of 2 filers holding297,498$2.6M+145,621Timeline
Nuveen, LLCin group TIAA282,657$2.47M<0.01%13F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL276,829$2.42M0.02%+111,96113F-HRTimeline
NORGES BANK263,100$2.3M<0.01%013F-HR/ATimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC232,383$2.03M<0.01%+111,53513F-HR/ATimelineGroup
UBS Group AGgroup of 2 filers holding231,187$2.02M-52,375Timeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC215,435$1.88M<0.01%-96,84713F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP205,405$1.8M<0.01%-61,53413F-HRTimelineGroup
Harbor Advisors LLC196,382$1.72M0.3%013F-HRTimeline
Empowered Funds, LLC195,127$1.71M0.02%+13,49413F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/183,638$1.61M<0.01%-10,42313F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.180,495$1.58M<0.01%-195,01813F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC171,500$1.5M<0.01%+47,30013F-HRTimeline
Cubist Systematic Strategies, LLC170,643$1.49M0.02%+126,83513F-HRTimeline
Trexquant Investment LP161,096$1.41M0.02%new13F-HRTimeline
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding157,963$1.38M+4,568Timeline
Y-Intercept (Hong Kong) Ltd146,446$1.28M0.09%+107,59613F-HRTimeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …145,901$1.28M<0.01%-21,27113F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp144,073$1.26M<0.01%-152,14613F-HRTimelineGroup
SIMPLEX TRADING, LLC130,671$1.14M0.04%new13F-HRTimeline
Engineers Gate Manager LP129,515$1.13M0.02%+82,68213F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd119,607$1.05M0.05%+91,54713F-HRTimelineGroup
Balyasny Asset Management L.P.in group Balyasny Asset Management118,765$1.04M<0.01%new13F-HRTimelineGroup
OCCUDO QUANTITATIVE STRATEGIES LP114,575$991K0.13%new13F-HRTimeline
Quantbot Technologies LP100,308$878K0.03%+59,87413F-HRTimeline
WOLVERINE TRADING, LLC101,058$874K0.03%+72,30613F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC99,552$871K<0.01%-136,09713F-HRTimelineGroup
IMC-Chicago, LLC94,803$830K0.03%+64,48713F-HRTimeline
ExodusPoint Capital Management, LP93,039$814K0.01%new13F-HRTimeline
VELA Investment Management, LLC92,412$809K0.28%+29,82813F-HRTimeline
Swiss National Bank91,900$804K<0.01%-1,40013F-HRTimeline
DARK FOREST CAPITAL MANAGEMENT LP77,234$676K0.03%new13F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…74,331$650K0.02%new13F-HRTimelineGroup
Nebula Research & Development LLC73,102$640K0.06%+18,92513F-HRTimeline
Public Sector Pension Investment Board72,000$630K<0.01%-118,80413F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN71,321$624K<0.01%-10013F-HRTimelineGroup
RHUMBLINE ADVISERS69,540$608K<0.01%-71,45913F-HR/ATimeline
ROYCE & ASSOCIATES LP66,122$579K0.01%-6,81213F-HRTimeline
CAXTON ASSOCIATES LLP65,647$574K0.02%13F-HRTimeline
Dynamic Technology Lab Private Ltd64,233$562K0.08%new13F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO63,419$555K<0.01%-213,34313F-HRTimelineGroup
ALGERT GLOBAL LLC62,719$549K0.01%-25,75013F-HR/ATimeline
PRICE T ROWE ASSOCIATES INC /MD/48,873$428K<0.01%+2,03813F-HRTimeline
CITIGROUP INCin group CITIGROUP INC48,416$424K<0.01%-22,20213F-HRTimelineGroup
FOX RUN MANAGEMENT, L.L.C.45,171$395K0.06%+18,35413F-HRTimeline
Point72 Asia (Singapore) Pte. Ltd.45,090$395K0.1%+44,96113F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…44,277$387K<0.01%013F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc43,542$381K<0.01%-79,39713F-HRTimelineGroup
OXFORD ASSET MANAGEMENT LLP42,123$369K0.17%+23,80613F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
HAP Trading, LLC41,939$367K0.13%new13F-HRTimeline
Verition Fund Management LLC39,381$345K<0.01%-34,95413F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC37,138$325K<0.01%-6,49113F-HRTimeline
Jain Global LLC36,672$321K0.01%new13F-HRTimeline
SG Americas Securities, LLC36,196$317K<0.01%new13F-HRTimeline
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co34,226$300K<0.01%-43,42913F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.33,100$290K<0.01%+25,80013F-HR/ATimelineGroup
Connor, Clark & Lunn Investment Managem…31,199$273K<0.01%-16,10713F-HRTimeline
ALLIANCEBERNSTEIN L.P.27,840$244K<0.01%-13,40013F-HRTimeline
AXQ CAPITAL, LP27,745$243K0.1%+15,63313F-HRTimeline
Magnetar Financial LLCin group Magnetar Financial LLC27,188$238K<0.01%new13F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…26,977$236K<0.01%+1,17013F-HRTimelineGroup
Freestone Grove Partners LP25,759$225K<0.01%+12,26513F-HRTimeline
Ensign Peak Advisors, Inc24,133$211K<0.01%013F-HRTimeline
KLCM Advisors, Inc.24,000$210K0.02%+10,00013F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…23,542$206K<0.01%-3,29613F-HRTimelineGroup
Quantessence Capital LLC23,500$206K0.05%new13F-HRTimeline
Corebridge Financial, Inc.in group Corebridge Financial, Inc.22,301$195K<0.01%-2,00313F-HRTimelineGroup
Cresset Asset Management, LLC22,193$194K<0.01%-37013F-HRTimeline
Gator Capital Management, LLC21,435$188K0.07%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS21,066$184K<0.01%-39,90213F-HRTimelineGroup
Point72 (DIFC) Ltd20,799$182K0.02%+15,10613F-HRTimeline
EntryPoint Capital, LLC20,235$177K0.08%new13F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson19,792$171K<0.01%013F-HRTimelineGroup
Petrus Trust Company, LTA19,432$170K0.02%new13F-HRTimeline
Mraz, Amerine & Associates, Inc.19,550$169K0.03%+4,65013F-HR/ATimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO18,876$165K<0.01%-9,11813F-HR/ATimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …16,378$143K<0.01%+2713F-HRTimelineGroup
Laurion Capital Management LP16,353$143K0.01%new13F-HRTimeline
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…15,470$135K<0.01%new13F-HRTimelineGroup
State of Wyoming14,758$129K0.02%+12,16613F-HRTimeline
FIRST CITIZENS BANK & TRUST CO14,070$123K<0.01%new13F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM13,609$119K<0.01%-15913F-HRTimeline
SummitTX Capital, L.P.13,069$114K0.01%13F-HRTimeline
Catalyst Funds Management Pty Ltd12,840$112K0.03%new13F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC12,696$111K<0.01%-1,41913F-HR/ATimelineGroup
STATE BOARD OF ADMINISTRATION OF FLORID…12,630$111K<0.01%013F-HRTimeline
Envestnet Portfolio Solutions, Inc.in group ENVESTNET ASSET MANAGEMENT INC12,527$110K<0.01%new13F-HRTimelineGroup
KLP KAPITALFORVALTNING AS12,400$108K<0.01%013F-HRTimeline
Man Group plcin group Man Group plc12,198$107K<0.01%new13F-HRTimelineGroup
FRANKLIN RESOURCES INCin group Franklin Resources11,464$100K<0.01%-1,01313F-HRTimelineGroup
INCEPTIONR LLC11,189$97.9K0.03%new13F-HRTimeline
State of Tennessee, Department of Treas…11,095$97.1K<0.01%013F-HRTimeline
DRW Securities, LLC10,800$94.5K0.01%new13F-HRTimeline
CIBC WORLD MARKETS CORP10,101$88.4K<0.01%new13F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND10,073$88.1K<0.01%013F-HR/ATimeline
Zurcher Kantonalbank (Zurich Cantonalba…9,826$86K<0.01%013F-HRTimeline
Police & Firemen's Retirement System of…9,202$80.5K<0.01%013F-HRTimeline
AlphaQuest LLC6,947$60.8K0.01%new13F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…4,583$40.1K<0.01%013F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…3,348$29.3K<0.01%+66613F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA3,012$27K<0.01%-2,97513F-HR/ATimelineGroup
TEACHERS RETIREMENT SYSTEM OF THE STATE…1,601$14K<0.01%-10,70013F-HRTimeline
AMALGAMATED BANK1,567$14K<0.01%-12,37313F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\1,372$12K<0.01%+68113F-HRTimelineGroup
HARBOR CAPITAL ADVISORS, INC.1,377$12K<0.01%+38613F-HRTimeline
NISA INVESTMENT ADVISORS, LLC970$8.49K<0.01%-3113F-HRTimeline
Brooklyn Investment Group960$8.4K<0.01%+60813F-HRTimeline
Sterling Capital Management LLC785$6.87K<0.01%-60513F-HRTimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…622$5.44K<0.01%+19313F-HRTimelineGroup
Lindbrook Capital, LLC549$4.8K<0.01%-8413F-HRTimeline
GAMMA Investing LLC510$4.46K<0.01%-1,01913F-HR/ATimeline
Wiser Advisor Group LLC500$4.38K0.01%013F-HRTimeline
BARROW HANLEY MEWHINNEY & STRAUSS LLC450$3.94K<0.01%013F-HRTimeline
Capital Analysts, LLCin group Capital Analysts, LLC325$3K<0.01%013F-HRTimelineGroup
SVB WEALTH LLC281$2.46K<0.01%new13F-HRTimeline
Farther Finance Advisors, LLC256$2.11K<0.01%+16713F-HRTimeline
Pinnacle Holdings, LLC186$1.63K<0.01%013F-HRTimeline
Red Tortoise LLC180$1.57K<0.01%013F-HRTimeline
DiNuzzo Private Wealth, Inc.177$1.55K<0.01%013F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK158$1.38K<0.01%013F-HRTimelineGroup
ASSETMARK, INCin group ASSETMARK, INC158$1.38K<0.01%013F-HRTimelineGroup
ROTHSCHILD INVESTMENT LLC147$1.29K<0.01%+513F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…127$1.11K<0.01%-170,40913F-HRTimelineGroup
Smartleaf Asset Management LLC96$830<0.01%-37113F-HRTimeline
MassMutual Private Wealth & Trust, FSB81$709<0.01%-7113F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.58$507<0.01%-53513F-HRTimelineGroup
Parkside Financial Bank & Trust55$482<0.01%new13F-HRTimeline
QUADRANT CAPITAL GROUP LLC46$403<0.01%-10113F-HRTimeline
Stephens Consulting, LLC40$350<0.01%new13F-HRTimeline
FARMERS & MERCHANTS INVESTMENTS INCin group FARMERS & MERCHANTS INVESTMEN…31$271<0.01%013F-HRTimelineGroup
Allworth Financial LP29$225<0.01%+1013F-HRTimeline
Legacy Wealth Managment, LLC/IDin group Legacy Wealth Managment, LLC/…25$219<0.01%013F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCgroup of 2 filers holding16$202-229,954Timeline
Versant Capital Management, Inc19$166<0.01%013F-HRTimeline
Caitong International Asset Management …13$114<0.01%new13F-HRTimeline
True Wealth Design, LLC13$114<0.01%new13F-HRTimeline
IFP Advisors, Inc0$105<0.01%013F-HRTimelineAmount filed as zero, left out of ratios.
SBI Securities Co., Ltd.10$88<0.01%013F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC29$00%-41313F-HRTimelineGroupValue filed as zero, left out of ratios.
Covestor Ltd21$00%-9113F-HRTimelineValue filed as zero, left out of ratios.
HANTZ FINANCIAL SERVICES, INC.12$00%new13F-HRTimelineValue filed as zero, left out of ratios. The filing omitted confidential holdings, a later amendment may add them.
CWM, LLCin group CWM, LLC6$00%-32713F-HRTimelineGroupValue filed as zero, left out of ratios.
CONCOURSE FINANCIAL GROUP SECURITIES, I…0$0013F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.

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