catching a falling knife

Verb

catch a falling knife (third-person singular simple present catches a falling knife, present participle catching a falling knife, simple past and past participle caught a falling knife)

1. (idiomatic) To buy a financial instrument whose price is falling rapidly.
   • Buying that stock now would be catching a falling knife. Wait until you see capitulation.
2. (idiomatic) To buy a financial instrument with the unconfirmed assumption that its price will reverse.