3M stock dropped 3.2% on Monday in after-hours trading, the biggest one-day drop in nearly a year.
The stock was trading at $36.20, a drop of more than 40%.
The company said it will focus on expanding its sales and service business, as well as adding jobs.
The stock has lost nearly 30% since last year.
Shares of 3M rose 3% in New York, the benchmark stock market, to $37.63 a share.
The Dow Jones Industrial Average was down 3.5% in after hours trading.