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OSG — OCTAVE SPECIALTY GROUP INC

Reported value held$140.59M
Funds holding (latest)44
SectorFinancials
Funds holding (Q2 2026)28
Institutional value$62.98M · 10.21M sh
New / Add / Cut / Exit1 / 17 / 8 / 1
Top-5 / Top-10 concentration73.4% / 90.4%
Institutional holdings change Accumulating +8.5% (+796.95K sh)
Institutional value change Up +45.5%

As of Q2 2026, 28 SEC-registered investment managers reported holding OSG (OCTAVE SPECIALTY GROUP INC) in their latest 13F filings, with a combined reported value of $62.98M across 10.21M shares. That is +8.5% by share count (+796.95K shares) versus the previous quarter, while reported value moved +45.5%. Ownership is concentrated: the five largest holders account for 73.4% of reported value and the top ten for 90.4%.

Compared with the prior quarter, 1 opened new positions, 17 added to existing stakes, 8 trimmed, 1 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.

OSG is classified in the Financials sector.

All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.

FundQuarterSharesValuePortfolio WeightChange
BlackRock Inc history Q2 2026 4.57M $28.53M 0.00% Add
Fidelity International (FIL) history Q2 2024 2.88M $24.43M 0.02% New
Vanguard Group history Q4 2025 2.51M $19.52M 0.00% Reduce
Davidson Kempner Capital Management history Q4 2021 984.38K $15.80M 0.31% Hold
Paulson & Co history Q4 2022 2.81M $8.12M 0.78% Reduce
Geode Capital Management history Q2 2026 1.11M $6.91M 0.00% Add
Marshall Wace history Q2 2026 601.80K $3.76M 0.00% Reduce
Morgan Stanley history Q2 2026 569.56K $3.55M 0.00% Add
Goldman Sachs Group history Q2 2026 560.76K $3.50M 0.00% Add
Citadel Advisors history Q2 2026 530.48K $3.31M 0.00% Reduce
Principal Global Investors history Q4 2024 229.95K $2.91M 0.00% Add
Charles Schwab Investment Management history Q2 2026 377.87K $2.36M 0.00% Add
Northern Trust Corp history Q2 2026 352.68K $2.20M 0.00% Add
CPP Investments history Q1 2022 184.00K $1.91M 0.00% Reduce
AQR Capital Management history Q2 2026 229.89K $1.43M 0.00% Add
Prudential Financial history Q2 2026 226.01K $1.41M 0.00% Add
Arrowstreet Capital history Q1 2025 145.90K $1.28M 0.00% Reduce
UBS Group AG history Q2 2026 147.20K $918.51K 0.00% Reduce
BNY Mellon history Q2 2026 134.97K $842.18K 0.00% Add
Bank of America Corp history Q2 2026 131.36K $819.69K 0.00% Reduce

View all 44 fund holders →

New Positions (Q2 2026)

Fully Exited (vs previous quarter)

Fund Position History — shares by quarter (top 20 funds)

FundQ3 2021Q4 2021Q1 2022Q2 2022Q3 2022Q4 2022Q1 2023Q2 2023Q3 2023Q4 2023Q1 2024Q2 2024Q3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026
BlackRock Inc — — — — — — — — — — — — 7.71M 7.96M 4.89M 4.59M 4.49M 4.49M 3.92M 4.57M
Geode Capital Management 1.44M 1.45M 1.34M 1.37M 1.38M 1.39M 1.42M 2.05M 2.15M 2.21M 2.24M 2.24M 1.03M 1.05M 1.09M 1.12M 1.06M 1.02M 1.02M 1.11M
Marshall Wace — 31.07K — — 32.12K 179.78K 196.36K 28.43K — — 69.50K 844.37K 364.57K 266.94K 205.41K 648.15K 455.07K 748.57K 1.07M 601.80K
Morgan Stanley 1.55M 1.26M 1.13M 439.41K 341.01K 348.03K 1.03M 876.31K 696.15K 744.66K 654.88K 687.78K 742.91K 497.95K 858.04K 457.63K 194.12K 938.71K 235.25K 569.56K
Goldman Sachs Group 2.14M 2.17M 1.62M 1.58M 892.71K 611.81K 759.82K 492.58K 742.74K 699.39K 650.22K 1.36M 693.49K 1.19M 680.18K 479.38K 524.89K 779.98K 346.29K 560.76K
Citadel Advisors 482.20K 666.71K 667.57K 483.65K 787.64K 625.54K 760.45K 378.32K 459.11K 925.12K 483.39K 779.88K 1.30M 745.91K 1.46M 1.37M 1.29M 1.70M 540.61K 530.48K
Charles Schwab Investment Management 629.98K 662.60K 684.66K 729.14K 703.66K 699.59K 702.61K 787.66K 816.45K 825.94K 828.15K 747.83K 553.40K 505.13K 378.76K 387.96K 382.57K 361.42K 295.34K 377.87K
Northern Trust Corp 629.98K 665.92K 645.34K 631.03K 620.36K 620.88K 611.19K 1.01M 1.04M 1.06M 1.01M 979.54K 473.06K 536.49K 461.26K 388.92K 362.02K 323.15K 322.35K 352.68K
AQR Capital Management — — 25.02K 10.61K — 398.11K 583.44K 689.37K 529.35K 401.14K 295.38K 74.39K 15.25K 17.84K — 51.30K 82.56K 70.13K 49.83K 229.89K
Prudential Financial 49.08K 48.37K 47.77K 45.52K 45.07K 72.39K 76.42K 256.80K 310.40K 830.86K 702.76K 351.87K 171.67K 47.67K — — 56.62K 54.34K 70.11K 226.01K
UBS Group AG 10.95K 18.50K 566.99K 9.00K 11.59K 387.77K 839.27K 40.92K 50.50K 274.51K 93.37K 29.35K 19.20K 89.53K 141.93K 360.26K 279.49K 153.86K 264.28K 147.20K
BNY Mellon 643.65K 474.61K 466.00K 426.74K 431.45K 542.19K 515.37K 682.44K 688.40K 754.62K 680.13K 675.47K 378.78K 296.22K 144.07K 141.94K 138.69K 138.17K 130.47K 134.97K
Bank of America Corp 144.38K 141.98K 133.81K 105.65K 86.95K 82.20K 194.85K 136.08K 158.16K 186.10K 268.14K 1.42M 72.83K 194.06K 183.64K 166.26K 203.20K 330.90K 256.11K 131.36K
Invesco Ltd 317.92K 301.89K 226.86K 265.44K 254.78K 478.65K 665.34K 1.05M 1.28M 1.40M 1.45M 593.84K 316.88K 375.51K 180.50K 170.44K 164.08K 156.50K 151.04K 127.87K
Renaissance Technologies 609.44K 469.09K 776.68K 554.55K 513.18K 484.42K 836.32K 1.31M 1.38M 1.46M 1.35M 1.23M 289.50K 124.20K 171.50K 186.10K 89.20K 25.16K 227.73K 117.20K
Wells Fargo & Co 134.90K 156.87K 136.33K 177.06K 178.75K 180.09K 172.04K 201.80K 175.61K 151.40K 151.92K 118.93K 98.52K 71.42K 71.32K 71.81K 73.86K 85.73K 55.32K 116.71K
Lazard Asset Management — — — — — — — 1.69K 1.69K 1.37K 1.43K 6.19K — — — — — — 29.22K 43.33K
Deutsche Bank AG 220.39K 207.21K 247.78K 624.42K 167.68K 303.07K 386.14K 510.64K 49.24K 756.48K 626.05K 701.49K 689.83K 675.13K 723.25K 645.36K 532.14K 25.65K 30.59K 40.36K
Millennium Management 247.35K 244.24K 132.15K 16.14K 104.62K 565.23K 781.28K 27.19K 550.96K 1.14M 651.29K 851.97K 275.66K 209.59K 508.69K 996.04K 700.89K 303.28K 135.09K 19.61K
Citigroup Inc 327.39K 35.27K 40.23K 20.13K 21.31K 95.96K 91.10K 57.17K 19.21K 36.88K 72.82K 90.66K 57.64K 70.62K 48.42K 23.03K 9.34K 7.10K 12.25K 19.08K

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