ALTR Altair Engineering Inc.
ALTR was the NASDAQ ticker symbol of Altair Engineering Inc (class A common stock). It no longer appears in current US listing files, which usually means the security was delisted, acquired, merged, or moved to a new symbol.
ALTR at a glance
- Symbol
- ALTR
- Company / issuer
- Altair Engineering Inc.
- Security type
- Class A common stock
- Last exchange
- NASDAQ
- Status
- No longer listed
- Seen in listing files
- Jan 2015 – Mar 2025
- Sector
- Technology
- Industry
- Computer Software: Prepackaged Software
- Country
- United States
- IPO year
- 2017
- Last reported market cap
- $9.6 billion (Feb 2025)
ALTR ticker history
All companies and securities we have recorded under the symbol ALTR, from periodic snapshots of US exchange listing files.
| Name | Security | First seen | Last seen |
|---|---|---|---|
| Altera Corporation | — | Jan 2015 | Jan 2015 |
| Altair Engineering Inc. | Class A Common Stock | Aug 2018 | Mar 2025 |
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 ALTR?
ALTR was the ticker symbol of Altair Engineering Inc on NASDAQ.
Is ALTR still trading?
No. ALTR does not appear in current US exchange listings as of Sep 2026; it was last seen in our listing snapshots in Mar 2025.
Which companies have used the ticker ALTR?
Our listing records show ALTR used by: Altera Corporation; Altair Engineering Inc..
Which exchange was ALTR listed on?
ALTR was listed on NASDAQ.