AMBC — AMBAC FINL GROUP INC

Ownership history in Western Standard LLC  ·  8 quarters on record

This page tracks every 13F SEC filing in which Western Standard LLC reported a position in AMBAC FINL GROUP INC (AMBC). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
8.99% (2025 Q4)
Avg. % of fund
4.36%
First filed
2019 Q4
Last filed
2025 Q4
Quarters held
8
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q4 REDUCED 2,504,627 -136,724 -5.2% 8.99% $19.5M —
2025 Q3 ADDED 2,641,351 +1,941,999 +277.7% 6.53% $22.0M —
2025 Q1 ADDED 699,352 +245,822 +54.2% 3.60% $6.1M —
2024 Q4 ADDED 453,530 +177,567 +64.3% 3.82% $5.7M —
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% of Fund (quarterly)

Other funds also holding AMBC

As of 2025 Q4 — sorted by position size

Bain Capital Credit, LP 3Y 7Y 2.25% Wolf Hill Capital Management, LP 3Y 1.62% THIRD AVENUE MANAGEMENT LLC 3Y 7Y 1.11% Cruiser Capital Advisors, LLC 3Y 7Y 0.71% PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C. 3Y 7Y 0.65% ESSEX INVESTMENT MANAGEMENT CO LLC 3Y 7Y 0.49% VELA Investment Management, LLC 3Y 0.33% Harbor Advisors LLC 3Y 7Y 0.23% nVerses Capital, LLC 0.21% GENDELL JEFFREY L 3Y 7Y 0.21%
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