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[SCHEDULE 13G] OCTAVE SPECIALTY GROUP INC Passive Investment Disclosure (>5%)

Jane Street Group, LLC filed a beneficial ownership report showing it collectively holds 2,377,754 shares of Octave Specialty Group Inc common stock, representing 5.4% of the outstanding class as of the event date.

(Neutral)

Sentiment and the balance of points

Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.

Form Type
SCHEDULE 13G

Rhea-AI Filing Summary

Jane Street Group, LLC filed a beneficial ownership report showing it collectively holds 2,377,754 shares of Octave Specialty Group Inc common stock, representing 5.4% of the outstanding class as of the event date. All shares are reported with shared voting and shared dispositive power, and no sole voting or dispositive power.

The position is held through several Delaware subsidiaries: Jane Street Capital, LLC with 634,716 shares (1.5% of the class), Jane Street Options, LLC with 1,472,859 shares (3.4%), and Jane Street Global Trading, LLC with 270,179 shares (0.6%). The filing certifies the stake was acquired and is held in the ordinary course of business, without the purpose or effect of changing or influencing control of Octave Specialty Group Inc.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)






SCHEDULE 13G





SCHEDULE 13G





SCHEDULE 13G





SCHEDULE 13G





SCHEDULE 13G



JANE STREET GROUP, LLC
Signature:/s/ Jeremy Kahn
Name/Title:Jeremy Kahn (Authorized Signatory)
Date:02/11/2026
Jane Street Capital, LLC
Signature:/s/ Jeremy Kahn
Name/Title:Jeremy Kahn (Authorized Signatory)
Date:02/11/2026
Jane Street Options, LLC
Signature:/s/ Jeremy Kahn
Name/Title:Jeremy Kahn (Authorized Signatory)
Date:02/11/2026
Jane Street Global Trading, LLC
Signature:/s/ Jeremy Kahn
Name/Title:Jeremy Kahn (Authorized Signatory)
Date:02/11/2026

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