Trinseo (TSE) shares soared 15.8% in the last trading session to close at $6.60. The move was backed by solid volume with far more shares changing hands than in a normal session. This compares to the stock's 32.9% gain over the past four weeks. Shares of Trinseo gained since it announced significant restructuring initiatives that will position the company for long-term growth. The company is consolidating its Engineered Materials, Plastics Solutions and Polystyrene businesses beginning Oct. 1, 2024. This mo ...