GDEF Global Defense & National Security Systems, Inc.
NASDAQNo longer listed
GDEF was the NASDAQ ticker symbol of Global Defense & National Security Systems, 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.
GDEF at a glance
- Symbol
- GDEF
- Company / issuer
- Global Defense & National Security Systems, Inc.
- Last exchange
- NASDAQ
- Status
- No longer listed
- Seen in listing files
- Jan 2015
GDEF ticker history
All listing names we have recorded under the symbol GDEF, from periodic snapshots of US exchange listing files.
| Name | Security | First seen | Last seen |
|---|---|---|---|
| Global Defense & National Security Systems, Inc. | — | Jan 2015 | Jan 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 GDEF?
GDEF was the ticker symbol of Global Defense & National Security Systems, Inc on NASDAQ.
Is GDEF still trading?
No. GDEF does not appear in current US exchange listings as of Sep 2026; it was last seen in our listing snapshots in Jan 2015.
Which exchange was GDEF listed on?
GDEF was listed on NASDAQ.
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