Stocks that moved substantially or traded heavily Wednesday on the New York Stock Exchange and the Nasdaq Stock Market:
MGIC Investment Corp. (MTG), down 88 cents to $8.36
The mortgage-insurer said its available assets would be less than the minimum requirements under newly proposed federal rules.
Lorillard Inc. (LO), up $2.92 to $66.01
The tobacco company and its competitor Reynolds American Inc. confirmed that they are in talks and considering a merger.
Nordion Inc. (NDZ), up 50 cents to $12.95
The health science technology company said that the Federal Trade Commission will not challenge a proposed buyout of Sterigenics.
ChannelAdvisor Corp. (ECOM), up $1.06 to $24.22
The online retail services software company reported strong same-store sales growth in June for online retail companies.
Fastenal Co. (FAST), down $2.00 to $46.15
The industrial and construction supplies company reported second-quarter revenue that fell short of Wall Street expectations.
Rent-A-Center Inc. (RCII), down $3.18 to $25.88
The rent-to-own operator warned that second-quarter revenue and earnings won’t meet expectations, citing economic factors.
Amazon.com Inc. (AMZN) up $18.28 to $346.20
The online retailer introduced new products for its web services business, while ChannelAdvisor indicated June sales growth.
eBay Inc. (EBAY), up $1.17 to $51.50
ChannelAdvisor indicated that June sales for the online auctioneer and commerce site grew compared with its May results.