Stocks that moved substantially or traded heavily on Monday:
Alphabet Inc., down $24.12 to $1,144.66
The parent of search engine Google warned that some of its features could lose support on Huawei mobile phones.
Sprint Corp., up $1.16 to $7.34
The telecommunications company's $26.5 billion merger with T-Mobile moved closer to approval.
Medicines Co., up $1.24 to $34.23
The drug developer reported solid data from an ongoing study of its potential cholesterol drug inclisiran.
Qualcomm Inc., down $4.88 to $76.62
The chipmaker and its peers are suffering from the fallout of the U.S. ban on technology sales to Huawei.
Dish Network Corp., down $2.09 to $33.24
The company is buying broadcast satellites and property from EchoStar in an all-stock deal valued at about $800 million.
Apple Inc., down $5.91 to $183.09
The iPhone maker could see its sales hurt by any escalation in the trade war between the U.S. and China.
Lumentum Holdings Inc., down $1.90 to $44.42
The mobile phone parts producer cut its revenue guidance because of the U.S. ban on technology sales to Huawei and other Chinese companies.
Qiagen NV, up 94 cents to $38.01
The diagnostic products maker received regulatory clearance for the QIAstat-DX system aimed at detecting respiratory viruses and bacteria.