Today's biggest winners and losers in the stock market.

On this episode of Stock Movers:

- Best Buy (BBY) surged after reporting profit for the holiday-shopping season that was better than feared. Its revenue forecast for this year also met expectations, giving investors confidence that the electronics chain won’t take a step backward.

- Target (TGT) shares rise after the retailer reported adjusted EPS for the fourth quarter that soared above the consensus estimate. Management said sales and traffic trends accelerated in the last two months of the period, and that it saw “a healthy, positive sales increase” in February. 

- Pinterest (PINS) shares are jumping after the company announced a $1 billion strategic investment from Elliott Investment Management. It also authorized a new $3.5 billion share repurchase program for its Class A common stock.