Gap and Vince are big market movers
The operator of Gap, Old Navy and Banana Republic reported a drop in August sales at stores open at least a year, which is a key measure of retailers' health.
The oil company is facing potential delisting from the NYSE as falling oil prices continue to keep the stock below $1 per share.
The medical device company reported better-than-expected financial results, but provided a weaker-than-expected outlook.