Octave Specialty GroupOSG

13F holders, Q3 2024 (September 30)
180holders −2
24new positions
29sold out
6famous investors
$11.16avg. 13F price*

At the end of Q3 2024, 180 institutions reported holding Octave Specialty Group Inc. (OSG) in their 13F filings, down 2 from Q2 2024. 24 opened new positions and 29 sold out. The largest holders were BlackRock, Inc. ($86.4M), Vanguard Group Inc. ($46.2M) and Dimensional Fund Advisors LP ($31.4M). 6 famous investors held it, including Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio).

Company
Octave Specialty Group Inc.
Filed as
AMBAC FINL GROUP INC (Q3 2024)
CUSIP
023139884
Latest filing quarter
Q2 2026

History

Number of 13F holders

050100150200 Q1 2024: 172Q1 2024Q2 2024: 182Q2 2024Q3 2024: 180Q3 2024Q4 2024: 180Q4 2024Q1 2025: 175Q1 2025Q2 2025: 146Q2 2025Q3 2025: 130Q3 2025Q4 2025: 144Q4 2025Q1 2026: 148Q1 2026Q2 2026: 147Q2 2026

Total Exit/New Position Q2 2024 → Q3 2024

InstitutionsTotal Value
New Positions24$22.5M
Exits29$13.3M

All 13F filers, Q2 2024 → Q3 2024: 4,982,318 shares bought and 3,645,240 shares sold, net +1,337,078 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.

Ownership 180 holders

BlackRock, Inc. 0.00% — 7,711,742 $86.4M
Vanguard Group Inc. 0.00% Reduce -15.7% 4,118,423 $46.2M
Dimensional Fund Advisors LP 0.01% Reduce -5.0% 2,804,400 $31.4M
Repertoire Partners LP 31.82% Reduce -0.6% 2,063,745 $23.1M
FMR LLC 0.00% Reduce -2.0% 1,732,186 $19.4M
State Street Corp. 0.00% Add +2.6% 1,653,544 $18.5M
Geode Capital Management, LLC 0.00% Add +2.9% 1,028,956 $11.5M
Bain Capital Credit, LP 2.18% New 1,108,012 $10.6M
American Century Companies Inc. 0.01% Add +12.2% 894,484 $10.0M
Hotchkis & Wiley Capital Management LLC 0.03% Add +19.9% 744,750 $8.3M
Morgan Stanley 0.00% Add +33.0% 742,913 $8.3M
Citadel Advisors 0.01% Add +76.5% 729,231 $8.2M
Goldman Sachs Group Inc. 0.00% Add +47.0% 693,492 $7.8M
Deutsche Bank AG 0.00% Add +0.9% 689,830 $7.7M
Bracebridge Capital, LLC 2.64% No change 579,234 $6.5M
Charles Schwab Investment Management Inc. 0.00% Reduce -7.6% 553,399 $6.2M
Gendell Jeffrey L 0.19% Add +10.1% 527,538 $5.9M
Nuveen Asset Management, LLC 0.00% Add +106.9% 498,208 $5.6M
D. E. Shaw & Co. 0.01% Add +8.5% 475,461 $5.3M
Northern Trust Corp. 0.00% Reduce -1.7% 473,056 $5.3M
Cubist Systematic Strategies, LLC 0.07% New 412,174 $4.6M
Bank of New York Mellon Corp 0.00% Reduce -10.3% 378,778 $4.2M
Barclays PLC 0.00% Add +30.9% 376,102 $4.2M
Susquehanna International Group, LLP 0.01% Reduce -40.9% 373,143 $4.2M
Marshall Wace, LLP 0.01% Add +5.5% 364,574 $4.1M
HSBC Holdings PLC 0.00% Add +11.5% 328,963 $3.7M
Invesco Ltd. 0.00% Reduce -7.0% 316,883 $3.6M
Renaissance Technologies 0.00% Add +146.9% 289,500 $3.2M
Bridgeway Capital Management, LLC 0.07% Reduce -31.7% 282,849 $3.2M
Western Standard LLC 2.90% New 275,963 $3.1M
Millennium Management 0.00% Add +263.4% 275,657 $3.1M
Norges Bank 0.00% Reduce -23.0% 263,100 $2.9M
JPMorgan Chase & Co. 0.00% Add +56.9% 254,072 $2.8M
Russell Investments Group, Ltd. 0.00% Add +34.1% 253,008 $2.8M
Squarepoint Ops LLC 0.01% Add +138.7% 251,649 $2.8M
Arrowstreet Capital, Limited Partnership 0.00% Reduce -59.9% 245,420 $2.8M
Jane Street Group, LLC 0.00% Add +27.4% 237,719 $2.7M
Hillsdale Investment Management Inc. 0.20% Reduce -21.1% 230,200 $2.6M
Principal Financial Group Inc. 0.00% Add +0.2% 223,365 $2.5M
Ameriprise Financial Inc. 0.00% Add +11.0% 217,096 $2.4M
Harbor Advisors LLC 0.37% No change 196,382 $2.2M
Prescott Group Capital Management, L.L.C. 0.32% Add +39.2% 194,902 $2.2M
Empowered Funds, LLC 0.03% Add +5.3% 172,849 $1.9M
Public Sector Pension Investment Board 0.01% Add +0.7% 172,656 $1.9M
Prudential Financial Inc. 0.00% Reduce -51.2% 171,670 $1.9M
Tudor Investment Corporation 0.02% Add +5.8% 166,926 $1.9M
Exchange Traded Concepts, LLC 0.04% Add +55.1% 157,714 $1.8M
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% Reduce -3.1% 156,967 $1.8M
HRT Financial LP 0.01% Add +115.1% 145,525 $1.6M
Rhumbline Advisers 0.00% Add +0.5% 132,504 $1.5M
Legal & General Group Plc 0.00% Add +0.7% 123,596 $1.4M
Wells Fargo & Company 0.00% Add +1.1% 98,523 $1.1M
Two Sigma Investments, LP 0.00% New 93,755 $1.1M
Caption Management, LLC 0.11% Add +1001.4% 92,829 $1.0M
Swiss National Bank 0.00% No change 89,200 $1000K
Verition Fund Management LLC 0.01% Add +79.5% 88,749 $995K
Allianz Asset Management GmbH 0.00% Reduce -0.2% 84,926 $952K
CANADA LIFE ASSURANCE Co 0.00% Add +22.8% 77,655 $872K
Nebula Research & Development LLC 0.10% Reduce -8.4% 75,208 $843K
Bank of America Corp. 0.00% Add +1.6% 72,833 $816K
Gator Capital Management, LLC 0.36% Reduce -40.5% 72,318 $811K
PDT Partners, LLC 0.06% Add +1.7% 63,382 $711K
Citigroup Inc. 0.00% Add +26.2% 57,643 $646K
Fox Run Management, L.L.C. 0.13% Add +192.7% 52,735 $591K
Simplex Trading, LLC 0.02% Reduce -27.3% 52,673 $590K
Quantbot Technologies LP 0.02% Add +48.9% 49,899 $559K
Acadian Asset Management LLC 0.00% New 48,114 $537K
Caxton Associates LP 0.02% Add +89.3% 47,858 $536K
New York State Teachers Retirement System 0.00% Add +0.2% 44,930 $504K
Centiva Capital, LP 0.02% Add +223.5% 44,937 $504K
Jump Financial, LLC 0.01% Reduce -47.1% 43,816 $491K
California State Teachers Retirement System 0.00% Reduce -3.1% 42,626 $478K
Man Group plc 0.00% Reduce -41.9% 42,348 $475K
T. Rowe Price Associates Inc. 0.00% Add +1.1% 39,793 $447K
Thrivent Financial for Lutherans 0.00% Reduce -0.8% 37,255 $418K
HighTower Advisors, LLC 0.00% Add +44.5% 36,593 $415K
Royce & Associates LP 0.00% No change 36,919 $414K
Voya Investment Management LLC 0.00% Reduce -63.1% 36,797 $412K
LPL Financial LLC 0.00% Reduce -4.3% 36,240 $406K
AlphaQuest LLC 0.04% New 35,388 $397K
Paloma Partners Management Co 0.03% New 33,068 $371K
Y-Intercept (Hong Kong) Ltd 0.02% Reduce -52.9% 31,634 $355K
BNP Paribas Financial Markets 0.00% Add +40.5% 31,484 $353K
IMC-Chicago, LLC 0.01% Reduce -45.8% 31,424 $352K
Corient Private Wealth LP 0.00% Add +19.4% 28,214 $316K
Sei Investments Co. 0.00% Add +22.7% 28,047 $314K
Algert Global LLC 0.01% No change 27,653 $310K
State of Alaska, Department of Revenue 0.00% Add +1.9% 27,072 $303K
Royal Bank of Canada 0.00% Add +28.0% 26,834 $301K
Franklin Resources Inc. 0.00% Reduce -51.3% 25,849 $300K
Illinois Municipal Retirement Fund 0.00% Reduce -22.6% 26,202 $294K
Alliancebernstein L.P. 0.00% Reduce -34.3% 26,040 $292K
Corebridge Financial, Inc. 0.00% Reduce -0.7% 25,066 $281K
State of Wyoming 0.04% Add +59.7% 24,839 $278K
Cresset Asset Management, LLC 0.00% Add +5.7% 24,669 $277K
MetLife Investment Management, LLC 0.00% No change 24,569 $275K
Magnetar Financial LLC 0.01% New 24,403 $274K
Ensign Peak Advisors, Inc 0.00% No change 24,133 $271K
Dynamic Technology Lab Private Ltd 0.03% Add +81.1% 24,044 $270K
Walleye Trading LLC 0.01% Reduce -43.4% 24,051 $270K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% Add +4.7% 23,849 $267K
Intech Investment Management LLC 0.00% Add +47.6% 23,708 $266K
Louisiana State Employees Retirement System 0.00% Add +0.4% 22,900 $257K
Janus Henderson Group PLC 0.00% No change 19,792 $222K
UBS Group AG 0.00% Add +74.8% 19,195 $215K
Teacher Retirement System of Texas 0.00% Reduce -0.4% 18,919 $212K
Yousif Capital Management, LLC 0.00% No change 18,240 $204K
Walleye Capital LLC 0.00% New 18,098 $203K
Wexford Capital LP 0.05% New 18,000 $202K
Engineers Gate Manager LP 0.00% New 17,428 $195K
Graham Capital Management, L.P. 0.01% New 17,361 $195K
GTS Securities LLC 0.00% Add +2.1% 17,092 $192K
Comerica Bank 0.00% Reduce -0.3% 16,832 $189K
Manufacturers Life Insurance Company, The 0.00% Reduce -2.8% 16,814 $188K
SG Americas Securities, LLC 0.00% New 16,467 $185K
Mraz, Amerine & Associates, Inc. 0.03% Reduce -6.0% 15,600 $175K
XTX Topco Ltd 0.01% New 15,380 $172K
AQR Capital Management 0.00% Reduce -35.1% 15,252 $171K
KLCM Advisors, Inc. 0.02% No change 14,000 $157K
Creative Planning 0.00% New 13,905 $156K
Amalgamated Bank 0.00% Reduce -0.5% 13,258 $149K
Arizona State Retirement System 0.00% Add +2.9% 13,023 $146K
State Board of Administration of Florida Retirement System 0.00% No change 12,630 $142K
Teachers Retirement System of the State of Kentucky 0.00% No change 12,301 $138K
State of Tennessee, Department of Treasury 0.00% Reduce -5.8% 11,581 $130K
Oregon Public Employees Retirement Fund 0.00% Add +1.8% 11,198 $126K
Bank of Montreal 0.00% Reduce -30.3% 10,339 $116K
Cornerstone Investment Partners, LLC 0.01% Add +3.1% 10,315 $116K
Interval Partners, LP 0.00% Add +0.8% 10,238 $115K
Commonwealth of Pennsylvania Public School Empls Retrmt SYS 0.00% New 10,140 $114K
New York State Common Retirement Fund 0.00% Reduce -44.0% 10,073 $113K
Long Focus Capital Management, LLC 0.01% No change 10,000 $112K
Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% No change 9,826 $110K
Group One Trading LLC 0.00% New 9,764 $109K
nVerses Capital, LLC 0.05% Add +92.0% 9,600 $108K
Tower Research Capital LLC (TRC) 0.00% Add +5.5% 9,596 $108K
Amundi 0.00% Add +18.6% 7,465 $82K
Sterling Capital Management LLC 0.00% — 5,534 $62K
Ameritas Investment Partners, Inc. 0.00% No change 4,583 $51K
Point72 (DIFC) Ltd 0.00% New 4,091 $46K
Catalyst Funds Management Pty Ltd 0.01% Add +650.0% 3,000 $34K
Federated Hermes, Inc. 0.00% Reduce -24.5% 2,503 $28K
PNC Financial Services Group, Inc. 0.00% Reduce -39.7% 1,631 $18K
Point72 Asia (Singapore) Pte. Ltd. 0.00% New 1,426 $16K
Point72 Hong Kong Ltd 0.00% New 1,370 $15K
Quarry LP 0.00% Reduce -47.3% 1,246 $14K
Nisa Investment Advisors, LLC 0.00% Reduce -98.7% 1,005 $11K
Harbor Capital Advisors, Inc. 0.00% New 831 $9K
US Bancorp \de 0.00% Add +16.9% 756 $8K
GAMMA Investing LLC 0.00% Reduce -26.0% 590 $7K
Lindbrook Capital, LLC 0.00% Add +7.5% 590 $7K
Osaic Holdings, Inc. 0.00% Add +13800.0% 556 $6K
Wiser Advisor Group LLC 0.01% No change 500 $6K
Bessemer Group Inc. 0.00% Add +52.4% 442 $5K
Fifth Third Bancorp 0.00% Reduce -5.7% 429 $5K
Huntington National Bank 0.00% Reduce -5.0% 381 $4K
Venturi Wealth Management, LLC 0.00% New 375 $4K
Capital Analysts, LLC 0.00% No change 325 $4K
Smartleaf Asset Management LLC 0.00% Add +57.5% 296 $3K
Pinnacle Holdings, LLC 0.00% Reduce -5.6% 186 $2K
Red Tortoise LLC 0.00% No change 180 $2K
DiNuzzo Private Wealth, Inc. 0.00% No change 177 $2K
Assetmark, Inc. 0.00% Reduce -21.9% 171 $2K
Quadrant Capital Group LLC 0.00% Reduce -93.4% 101 $1K
Rothschild Investment LLC 0.00% Add +48.4% 92 $1K
Covestor Ltd 0.00% New 94 $1K
Capital Advisors, Ltd. LLC 0.00% No change 55 $1K
Cwm, LLC 0.00% Reduce -17.3% 105 $1K
Farther Finance Advisors, LLC 0.00% Add +18.7% 89 $998
Parallel Advisors, LLC 0.00% No change 84 $942
Allspring Global Investments Holdings, LLC 0.00% New 65 $728
MassMutual Private Wealth & Trust, FSB 0.00% No change 58 $650
Barrow Hanley Mewhinney & Strauss LLC 0.00% Reduce -72.7% 41 $460
Farmers & Merchants Investments Inc. 0.00% No change 31 $348
Legacy Investment Solutions, LLC 0.00% — 25 $323
Legacy Wealth Managment, LLC 0.00% — 25 $323
Allworth Financial LP 0.00% Reduce -20.8% 19 $213
Versant Capital Management, Inc 0.00% No change 19 $213
UMB Bank, n.a. 0.00% Reduce -55.9% 15 $168
NewEdge Advisors, LLC 0.00% No change 5 $56

"% of holder's portfolio" is OSG's weight in each manager's 13F, not the share of Octave Specialty Group Inc. the manager owns.