ALDR Alder BioPharmaceuticals, Inc.
NASDAQNo longer listed
ALDR was the NASDAQ ticker symbol of Alder BioPharmaceuticals, 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.
ALDR at a glance
- Symbol
- ALDR
- Company / issuer
- Alder BioPharmaceuticals, Inc.
- Last exchange
- NASDAQ
- Status
- No longer listed
- Seen in listing files
- Jan 2015 – Aug 2018
ALDR ticker history
All listing names we have recorded under the symbol ALDR, from periodic snapshots of US exchange listing files.
| Name | Security | First seen | Last seen |
|---|---|---|---|
| Alder BioPharmaceuticals, 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 ALDR?
ALDR was the ticker symbol of Alder BioPharmaceuticals, Inc on NASDAQ.
Is ALDR still trading?
No. ALDR 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 ALDR listed on?
ALDR was listed on NASDAQ.
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