Stocks that moved substantially or traded heavily Tuesday:
General Electric Co., down 55 cents to $18.21
The company said it was taking a $6.2 billion charge related to its insurance portfolio.
Energizer Holdings Inc., up $7.49 to $59.11
The company said it will acquire the battery and lighting assets of Spectrum Brands.
UnitedHealth Group Inc., up $4.26 to $232.90
The nation's biggest health insurer reported earnings and revenue that came in ahead of analysts' forecasts.
Blackhawk Network Holdings Inc., up $8.55 to $45.05
The financial technology company agreed to be taken private for $3.5 billion.
General Motors Co., up 12 cents to $44.19
The automaker said it expects strong sales in North America and China to sustain its profit through 2018.
Viacom Inc., down $2.38 to $31.38
The media company slid after several reports said it isn't in talks to merge with CBS Corp.
Merck & Co., up $3.41 to $62.07
The company announced positive results from a clinical trial for a lung cancer treatment.
Qualcomm Inc., up $2.87 to $68.25
Technology stocks posted some of the biggest gains Tuesday.