bottom fishing

US /ˈbɑː.t̬əm ˌfɪʃ.ɪŋ/
UK /ˈbɑː.t̬əm ˌfɪʃ.ɪŋ/
"bottom fishing" picture
1.

the practice of buying securities that have fallen sharply in price, with the expectation that they will soon rise again

:
Many investors are engaging in bottom fishing in the current bear market.
His strategy involves aggressive bottom fishing during market downturns.