Huntsman (NYSE: HUN), a chemical company, controlled by private equity investor David Matlin and Jon Huntsman, rejected Apollo Managements attempt to back out of merger a $28 cash merger agreement.

HUN is recently trading at $13.10 in pre-open trading, below its close of $20.86.

HUN overall option implied volatility of 82 was above its 26-week average of 48 according to Track Data, suggesting larger price risk.

Option Update is provided by Stock Specialist Paul Foster of theflyonthewall.com