# AMBAC FINL GROUP INC COM NEW

AMBAC FINL GROUP INC COM NEW is a security (CUSIP 023139884) tracked across SEC portfolio filings. 155 institutional managers reported $213.6M on Form 13F as of 2026-06-30; 11 registered fund positions totaling $10.8M via N-PORT as of 2026-05-31.

## Summary

- Issuer: AMBAC FINL GROUP INC
- Class: COM NEW
- CUSIP: 023139884
- Asset category: EC
- 13F holders: 155
- 13F value: $213.6M
- 13F period: 2026-06-30
- N-PORT fund positions: 11
- N-PORT value: $10.8M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 155 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [Repertoire Partners LP](https://search.stillhousedata.com/firm/316084) | NEW YORK, NY | $47.8M | 721,188 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $19.5M | 2,508,395 |
| BlackRock, Inc. | New York, NY | $18.2M | 3,917,798 |
| [Western Standard LLC](https://search.stillhousedata.com/firm/147864) | Los Angeles, CA | $10.5M | 2,247,591 |
| [PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C.](https://search.stillhousedata.com/firm/115220) | TULSA, OK | $7.4M | 1,592,587 |
| [Wolf Hill Capital Management, LP](https://search.stillhousedata.com/firm/306712) | GREENWICH, CT | $6.8M | 1,470,334 |
| GENDELL JEFFREY L | GREENWICH, CT | $6.6M | 1,413,212 |
| THIRD AVENUE MANAGEMENT LLC | NEW YORK, NY | $6.2M | 1,341,211 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $6.1M | 1,310,132 |
| [Bain Capital Credit, LP](https://search.stillhousedata.com/firm/134852) | BOSTON, MA | $5.2M | 1,108,012 |
| [MARSHALL WACE, LLP](https://search.stillhousedata.com/firm/160885) | LONDON, X0 | $5.0M | 1,065,335 |
| [Caption Management, LLC](https://search.stillhousedata.com/firm/173841) | OKLAHOMA CITY, OK | $4.8M | 642,597 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $4.8M | 1,022,438 |
| STATE STREET CORP | BOSTON, MA | $4.4M | 941,404 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | FLORHAM PARK, NJ | $4.1M | 884,272 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Third Avenue Small-Cap Value Fund](https://search.stillhousedata.com/fund/S000001465) | Third Avenue Trust | $5.9M | 295.50% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $2.3M | 0.28% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $1.1M | 0.63% |
| [1290 Essex Small Cap Growth Fund](https://search.stillhousedata.com/fund/S000076802) | 1290 Funds | $433K | 38.63% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $285K | 0.59% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $266K | 0.36% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $182K | 0.06% |
| [Gator Financial Fund](https://search.stillhousedata.com/fund/S000040310) | Gator Series Trust | $121K | 590.00% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $106K | 0.02% |
| [DWS Small Cap Index VIP](https://search.stillhousedata.com/fund/S000006223) | DEUTSCHE DWS INVESTMENTS VIT FUNDS | $27K | 0.65% |
| [TIAA Separate Account VA-1 - Stock Index Account](https://search.stillhousedata.com/fund/S000005098) | TIAA Separate Account VA-1 | $8K | 0.06% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/023139884.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

---

Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.