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JANE STREET GROUP, LLC

Position in OSG — Octave Specialty Group Inc

CIK 1595888 NEW YORK, NY

Position in OSG

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$1,739,281
-$1,815,103 QoQ
Shares Held
278,731
-63.5% QoQ
Ownership
0.619%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#30
of 148 holders
Holding Since
Jun 2020
23 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in OSG Over Time

Shares Held

Position Value (USD)

Derivatives in OSG

reported options exposure · as of Jun 30, 2026
CallValue
$303,888
CallShares
48,700
PutValue
$99,216
PutShares
15,900

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Insurance - Specialty

Financial Services · as of Jun 30, 2026

JANE STREET GROUP, LLC holds $38,816,232 across 9 Insurance - Specialty names. OSG ranks #6 (4.5% of the industry book) .

# Ticker Company Shares Value (USD) Open
6 OSG
Octave Specialty Group Inc
This page
278,731 $1,739,281

All Filings in OSG

Export CSV
45 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $303,888 48,700
2026-06-30 $99,216 15,900
2026-06-30 $1,739,281 278,731
2026-03-31 $74,865 16,100
2026-03-31 $3,554,384 764,384
2025-12-31 $6,668,238 857,100
2025-12-31 $387,444 49,800
2025-12-31 $11,830,687 1,520,654
2025-09-30 $7,204,092 863,800
2025-09-30 $1,040,832 124,800
2025-09-30 $7,082,177 849,182
2025-06-30 $3,638,344 512,443
2025-06-30 $397,600 56,000
2025-06-30 $87,330 12,300
2025-03-31 $1,086,750 124,200
2025-03-31 $6,335,821 724,094
2025-03-31 $1,330,875 152,100
2024-12-31 $4,684,295 370,300
2024-12-31 $3,999,625 316,176
2024-12-31 $1,103,080 87,200
2024-09-30 $2,664,829 237,719
2024-09-30 $3,077,145 274,500
2024-06-30 $2,393,006 186,662
2024-03-31 $2,344,015 149,969
2023-12-31 $3,280,491 199,059
2023-09-30 $2,234,343 185,269
2023-06-30 $774,854 54,414
2023-03-31 $353,160 22,814
2022-09-30 $1,630,125 127,853
2022-06-30 $1,008,594 88,863
2022-03-31 $1,116,720 107,377
2022-03-31 $440,960 42,400
2022-03-31 $936,000 90,000
2021-12-31 $562,167 35,026
2021-12-31 $346,680 21,600
2021-12-31 $832,995 51,900
2021-06-30 $216,108 13,800
2021-03-31 $685,418 40,945
2021-03-31 $893,916 53,400
2021-03-31 $919,026 54,900
2020-12-31 $1,076,600 70,000
2020-12-31 $239,928 15,600
2020-09-30 $1,237,413 96,900
2020-09-30 $310,311 24,300
2020-06-30 $168,989 11,801