whipsaw
/ˈhwɪpsɔw/Definitions
1. noun
a sudden and unexpected change in direction or trend, especially in a financial market or a person’s behavior
“The company’s stock price was subject to a whipsaw, falling sharply in the morning only to rise again in the afternoon.”
2. verb
to subject or cause something to experience a whipsaw, especially in a financial market or a person’s behavior
“The investor tried to time the market but was whipsawed by the volatile stock prices.”