ACHN Achillion Pharmaceuticals, Inc.
NASDAQNo longer listed
ACHN was the NASDAQ ticker symbol of Achillion Pharmaceuticals, 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.
ACHN at a glance
- Symbol
- ACHN
- Company / issuer
- Achillion Pharmaceuticals, Inc.
- Last exchange
- NASDAQ
- Status
- No longer listed
- Seen in listing files
- Jan 2015 – Aug 2018
ACHN ticker history
All listing names we have recorded under the symbol ACHN, from periodic snapshots of US exchange listing files.
| Name | Security | First seen | Last seen |
|---|---|---|---|
| Achillion Pharmaceuticals, 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.
Frequently asked questions
What company has the ticker symbol ACHN?
ACHN was the ticker symbol of Achillion Pharmaceuticals, Inc on NASDAQ.
Is ACHN still trading?
No. ACHN does not appear in current US exchange listings as of Sep 2026; it was last seen in our listing snapshots in Aug 2018.
Which exchange was ACHN listed on?
ACHN was listed on NASDAQ.
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