TSE Trinseo PLC
TSE was the NYSE ticker symbol of Trinseo PLC (ordinary shares). It no longer appears in current US listing files, which usually means the security was delisted, acquired, merged, or moved to a new symbol. A company with the same name, Trinseo PLC, currently trades as TSEOQ.
TSE at a glance
- Symbol
- TSE
- Company / issuer
- Trinseo PLC
- Security type
- Ordinary shares
- Last exchange
- NYSE
- Status
- No longer listed
- Seen in listing files
- Apr 2015 – Feb 2026
- Sector
- Industrials
- Industry
- Major Chemicals
- Country
- United States
- IPO year
- 2014
- Last reported market cap
- $8.3 million (Feb 2026)
TSE ticker history
All listing names we have recorded under the symbol TSE, from periodic snapshots of US exchange listing files.
| Name | Security | First seen | Last seen |
|---|---|---|---|
| Trinseo PLC | Ordinary Shares | Apr 2015 | Feb 2026 |
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.
Other symbols for Trinseo PLC
Frequently asked questions
What company has the ticker symbol TSE?
TSE was the ticker symbol of Trinseo PLC on NYSE.
Is TSE still trading?
No. TSE does not appear in current US exchange listings as of Sep 2026; it was last seen in our listing snapshots in Feb 2026. The company now appears to trade as TSEOQ (Trinseo PLC).
Which exchange was TSE listed on?
TSE was listed on NYSE.