ALXN Alexion Pharmaceuticals Inc.
NASDAQNo longer listedCommon stock
ALXN was the NASDAQ ticker symbol of Alexion 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.
ALXN at a glance
- Symbol
- ALXN
- Company / issuer
- Alexion Pharmaceuticals Inc.
- Security type
- Common stock
- Last exchange
- NASDAQ
- Status
- No longer listed
- Seen in listing files
- Jan 2015 – Jun 2021
- Sector
- Health Care
- Industry
- Biotechnology: Commercial Physical & Biological Resarch
- Country
- United States
- IPO year
- 1996
- Last reported market cap
- $40.7 billion (Jun 2021)
ALXN ticker history
All listing names we have recorded under the symbol ALXN, from periodic snapshots of US exchange listing files.
| Name | Security | First seen | Last seen |
|---|---|---|---|
| Alexion Pharmaceuticals Inc. | Common Stock | Jan 2015 | Jun 2021 |
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 ALXN?
ALXN was the ticker symbol of Alexion Pharmaceuticals Inc on NASDAQ.
Is ALXN still trading?
No. ALXN does not appear in current US exchange listings as of Sep 2026; it was last seen in our listing snapshots in Jun 2021.
Which exchange was ALXN listed on?
ALXN was listed on NASDAQ.
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