Institutional shares held 40.7 Million
11.2M calls
513K puts
Total value of holdings $388M
$107M calls
$4.88M puts
Market Cap $428M
44,962,900 Shares Out.
Institutional ownership 90.63%
# of Institutions 155


Latest Institutional Activity in AMBC

Top Purchases

Q3 2025
Western Standard LLC Shares Held: 2.64M ($25.1M)
Q3 2025
Manufacturers Life Insurance Company, The Shares Held: 1.21M ($11.5M)
Q3 2025
Caption Management, LLC Shares Held: 1.12M ($10.7M)
Q3 2025
Continental General Insurance CO Shares Held: 2.07M ($19.7M)
Q3 2025
Gendell Jeffrey L Shares Held: 1.86M ($17.8M)

Top Sells

Q3 2025
Citadel Advisors LLC Shares Held: 172K ($1.63M)
Q3 2025
Susquehanna International Group, LLP Shares Held: 274K ($2.61M)
Q3 2025
American Century Companies Inc Shares Held: 133K ($1.26M)
Q3 2025
Group One Trading, L.P. Shares Held: 20.4K ($195K)
Q3 2025
Millennium Management LLC Shares Held: 701K ($6.67M)

About AMBC

Ambac Financial Group, Inc., a financial services holding company, provides financial guarantees in the United States, the United Kingdom, Italy, Austria, Australia, France, and Internationally. It offers financial guarantee insurance policies; specialty property & casualty program insurance; credit derivative contracts; and interest rate derivative transactions, as well as managing general agency / underwriting services. The company was incorporated in 1991 and is headquartered in New York, New York.


Insider Transactions at AMBC

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
2.21M Shares
From 24 Insiders
Conversion of derivative security 1.68M shares
Open market or private purchase 182K shares
Grant, award, or other acquisition 28.3K shares
Exercise of conversion of derivative security 312K shares
Sell / Disposition
699K Shares
From 7 Insiders
Payment of exercise price or tax liability 699K shares

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