ATK Alliant Techsystems Inc.
NYSENo longer listedCommon stock
ATK was the NYSE ticker symbol of Alliant Techsystems 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.
ATK at a glance
- Symbol
- ATK
- Company / issuer
- Alliant Techsystems Inc.
- Security type
- Common stock
- Last exchange
- NYSE
- Status
- No longer listed
- Seen in listing files
- Apr 2015
ATK ticker history
All listing names we have recorded under the symbol ATK, from periodic snapshots of US exchange listing files.
| Name | Security | First seen | Last seen |
|---|---|---|---|
| Alliant Techsystems Inc. | Common Stock | Apr 2015 | Apr 2015 |
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 ATK?
ATK was the ticker symbol of Alliant Techsystems Inc on NYSE.
Is ATK still trading?
No. ATK does not appear in current US exchange listings as of Sep 2026; it was last seen in our listing snapshots in Apr 2015.
Which exchange was ATK listed on?
ATK was listed on NYSE.
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