Hyliion is trading 10.1% down now at $3.30 as long-term Treasury yields resumed climbing, with the 30-year yield reaching 5.22%.
- The S&P 500, Nasdaq Composite, and Dow Jones fell 0.72%, 1.05%, and 1.15%, respectively.
- No major new operating announcement was identified.
- A shareholder-law-firm investigation cites an older June short-seller report, not a fresh August 20 catalyst.