A battleground stock for Wall Street's short sellers is getting hammered

Representative Ro Khanna (D-CA) wrote a letter to the inspector general of the Department of Defense, requesting that he look into TransDigm Group, a controversial airplane-part manufacturer and supplier of companies like Boeing.
The stock is down over 6% on the news.
Khanna's letter accuses the company of "waste, fraud and abuse in the defense and industrial base." He called the company a "hidden monopolist" that engages in "unreasonable" pricing increases.
On Wall Street, short selle