DO Diamond Offshore Drilling Inc.
NYSENo longer listedCommon stock
DO was the NYSE ticker symbol of Diamond Offshore Drilling 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.
DO at a glance
- Symbol
- DO
- Company / issuer
- Diamond Offshore Drilling Inc.
- Security type
- Common stock
- Last exchange
- NYSE
- Status
- No longer listed
- Seen in listing files
- Apr 2015 – Aug 2024
- Sector
- Energy
- Industry
- Oil & Gas Production
- Country
- United States
- IPO year
- 2022
- Last reported market cap
- $1.5 billion (Aug 2024)
DO ticker history
All listing names we have recorded under the symbol DO, from periodic snapshots of US exchange listing files.
| Name | Security | First seen | Last seen |
|---|---|---|---|
| Diamond Offshore Drilling Inc. | Common Stock | Apr 2015 | Aug 2024 |
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 DO?
DO was the ticker symbol of Diamond Offshore Drilling Inc on NYSE.
Is DO still trading?
No. DO does not appear in current US exchange listings as of Sep 2026; it was last seen in our listing snapshots in Aug 2024.
Which exchange was DO listed on?
DO was listed on NYSE.
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