AMBCW Ambac Financial Group, Inc.
AMBCW was the NASDAQ ticker symbol of Ambac Financial Group, Inc. It no longer appears in current US listing files, which usually means the security was delisted, acquired, merged, or moved to a new symbol. SEC records list “Ambac Financial Group Inc” as a former name of Octave Specialty Group Inc, which trades today as OSG.
AMBCW at a glance
- Symbol
- AMBCW
- Company / issuer
- Ambac Financial Group, Inc.
- Last exchange
- NASDAQ
- Status
- No longer listed
- Seen in listing files
- Jan 2015 – Aug 2018
AMBCW ticker history
All listing names we have recorded under the symbol AMBCW, from periodic snapshots of US exchange listing files.
| Name | Security | First seen | Last seen |
|---|---|---|---|
| Ambac Financial Group, Inc. | — | Jan 2015 | Aug 2018 |
Snapshots have gaps (notably 2018–2021, and 2015–2021 for NYSE listings), so the actual delisting date may be later than the last-seen date.
Other symbols for Ambac Financial Group, Inc.
Frequently asked questions
What company has the ticker symbol AMBCW?
AMBCW was the ticker symbol of Ambac Financial Group, Inc on NASDAQ.
Is AMBCW still trading?
No. AMBCW does not appear in current US exchange listings as of Sep 2026; it was last seen in our listing snapshots in Aug 2018. The company now appears to trade as OSG (Octave Specialty Group Inc).
Which exchange was AMBCW listed on?
AMBCW was listed on NASDAQ.