Pinterest stock advances, Masimo shares slump on outlook and other stocks on the move

Here are some of the biggest movers of the day:

Stock gainers:

Shares of Pinterest Inc.
PINS,
+1.53%
were gaining 4% after an Evercore ISI analyst moved to a bullish stance, cheering better advertising-market conditions and improvements made by Chief Executive Bill Ready, who is about a year into his stint.