NEW YORK — Stocks that moved substantially or traded heavily on Thursday:
Twitter Inc., down $5 to $19.87
Investors felt it is less likely the social network will be bought by another company.
Zumiez Inc., up $2.88 to $21.15
The teen retailer said an important sales measure improved in September, a surprise to analysts.
ICU Medical Inc., up $18.72 to $144.68
The company agreed to buy an infusion pump business from Pfizer for $1 billion in cash and stock.
Yum Brands Inc., down $1.18 to $87.44
The parent of Taco Bell and other chains reported disappointing quarterly results as sales in China slumped.
Mylan Inc., down $1.19 to $36.84
The administrator of Medicare said it appeared Mylan had overcharged the government for its EpiPen allergy shot.
Wal-Mart Stores Inc., down $2.31 to $69.36
Investors weren’t enthusiastic about the retail giant’s profit projections for the next few years.
Lam Research Corp., up $4.02 to $100.19
The semiconductor equipment maker called off a merger with rival KLA-Tencor after facing opposition from antitrust regulators.
Buckle Inc., down $2.41 to $21.24
The teen clothing retailer reported an even larger drop in sales than analysts had expected.