Stocks that moved substantially or traded heavily Tuesday:
PPG Industries Inc., down $11.02 to $98.56
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The maker of paints and coatings said higher costs for materials and weaker demand from China and elsewhere will hurt its results.
Papa John's International Inc., up $4.48 to $54.90
The Wall Street Journal reported that activist investor Nelson Peltz is evaluating a bid for the company.
Perrigo Co., down $1.31 to $71.49
The Dublin-based drugmaker said Uwe Roehrhoff is stepping down as CEO.
Snap Inc., down 48 cents to $7
Analysts at MoffettNathanson lowered their price target on the stock to $6.50 from $8 and said the company is "quickly running out of money."
Netflix Inc., up $6.61 to $335.71
The company said it has chosen New Mexico as the site of a new U.S. production hub.
Starbucks Corp., up $1.17 to $57.71
Hedge fund billionaire Bill Ackman disclosed a $900 million stake in the coffee chain.
Helen of Troy Ltd., up $1.57 to $124.27
The personal and household products company reported quarterly results that came in ahead of analysts' forecasts.
Blackbaud Inc., down $12.63 to $77.38
The cloud-based software company cut its earnings and revenue projections.