Best Buy, Cummins, SunPower are market movers

NEW YORK (AP) ? Stocks that moved substantially or traded heavily Tuesday on the New York Stock Exchange and Nasdaq Stock Market:

NYSE

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.

Nasdaq

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.