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Equibles

CITADEL ADVISORS LLC

Position in OSG — Octave Specialty Group Inc

CIK 1423053 MIAMI, FL
Back to OSG Full portfolio

Position in OSG

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$2,638,128
+$630,217 QoQ
Shares Held
422,777
-2.1% QoQ
Ownership
0.938%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#21
of 147 holders
Holding Since
Mar 2020
26 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
$425,568
CallShares
68,200
PutValue
$246,480
PutShares
39,500

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

CITADEL ADVISORS LLC holds $347,463,725 across 14 Insurance - Specialty names. OSG ranks #12 (0.8% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 AXS
Axis Capital Holdings Ltd
 943,834 $101,405,524
2 RDN
Radian Group Inc
 2,064,633 $77,774,725
3 FAF
First American Financial Corp
 739,471 $50,720,315
4 NMIH
NMI Holdings, Inc.
 539,325 $22,160,863
5 MTG
Mgic Investment Corp
 781,710 $22,044,221
6 ESNT
Essent Group Ltd.
 293,653 $18,876,014
7 AGO
Assured Guaranty Ltd
 168,908 $13,539,664
8 AMSF
Amerisafe Inc
 376,251 $12,728,570

All Filings in OSG

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $246,480 39,500
2026-06-30 $2,638,128 422,777
2026-06-30 $425,568 68,200
2026-03-31 $351,540 75,600
2026-03-31 $2,007,911 431,809
2026-03-31 $154,380 33,200
2025-12-31 $2,235,061 287,283
2025-12-31 $676,860 87,000
2025-12-31 $10,331,840 1,328,000
2025-09-30 $8,597,706 1,030,900
2025-09-30 $771,450 92,500
2025-09-30 $1,430,668 171,543
2025-06-30 $1,119,670 157,700
2025-06-30 $7,943,202 1,118,761
2025-06-30 $639,710 90,100
2025-03-31 $9,648,817 1,102,722
2025-03-31 $2,579,500 294,800
2025-03-31 $585,375 66,900
2024-12-31 $4,794,476 379,010
2024-12-31 $2,862,695 226,300
2024-12-31 $1,778,590 140,600
2024-09-30 $8,174,678 729,231
2024-09-30 $3,475,100 310,000
2024-09-30 $2,954,956 263,600
2024-06-30 $1,333,280 104,000
2024-06-30 $5,297,736 413,240
2024-06-30 $1,542,246 120,300
2024-03-31 $2,224,149 142,300
2024-03-31 $3,019,543 193,189
2024-03-31 $2,311,677 147,900
2023-12-31 $1,886,960 114,500
2023-12-31 $6,663,028 404,310
2023-12-31 $2,765,344 167,800
2023-09-30 $803,196 66,600
2023-09-30 $1,790,885 148,498
2023-09-30 $804,402 66,700
2023-06-30 $855,667 60,089
2023-06-30 $615,168 43,200
2023-06-30 $1,532,224 107,600
2023-03-31 $1,061,432 68,568
2023-03-31 $2,704,356 174,700
2023-03-31 $1,086,696 70,200
2022-12-31 $5,533,502 317,288
2022-12-31 $287,760 16,500
2022-12-31 $1,831,200 105,000
2022-09-30 $2,112,828 165,712
2022-09-30 $669,375 52,500
2022-09-30 $5,288,700 414,800
2022-06-30 $784,285 69,100
2022-06-30 $1,013,555 89,300

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