Stocks that moved substantially or traded heavily Tuesday on the New York Stock Exchange and Nasdaq Stock Market:
Best Buy Co. Inc., down $1.61 at $23.35
The electronics retailer posted earnings results that missed expectations as consumers cut down on buying new TVs and smartphones.
Huntsman Corp., up 74 cents at $12.14
Standard & Poor's Ratings Services upgraded the credit of the chemical maker one notch because of strong demand for chemicals.
JPMorgan Chase & Co., up 7 cents at $32.49
A Stifel Nicolaus analyst upgraded the bank to "Buy" from "Hold" saying the stock's recent pullback makes it a good time to buy.
MGM Resorts International, up 21 cents at $10.53
A Brean Murray Carret & Co. analyst upgraded the casino operator's shares saying that gaming revenue remains solid.
Cummins Inc., up $5.14 at $92.20
The diesel engine maker said that it expects 2011 to be a record year and it hopes to post $30 billion in sales in 2015.
Con-way Inc., up $1.65 at $24.63
A Stifel Nicolaus analyst reiterated his "Buy" rating on shares of the freight transportation company saying business is improving.
Sotheby's, up $1.52 at $35.85
A Wedbush analyst said now is the time to buy the auctioneer's shares, citing higher presale estimates for a fall art auction.
Intersil Corp., up 45 cents at $11.10
The chipmaker said it's already seeing signs of a recovery even though it cut its sales outlook for the third quarter.
SunPower Corp., up $1.16 at $11.23
The solar panel maker said that it will seek shareholder approval to reclassify its class A and B shares to one class of shares.