NEW YORK (TheStreet) -- CHANGE IN RATINGS

Aerovironment

(AVAV) - Get Report

was downgraded to hold at TheStreet Ratings.

Big Lots

(BIG) - Get Report

was upgraded from sell to hold, Deutsche Bank said. $35 price target. Near-term risks are off the table, Deutsche Bank said.

Big Lots

(BIG) - Get Report

was upgraded to buy at TheStreet Ratings.

Clean Harbors

(CLH) - Get Report

was upgraded from neutral to outperform, Robert Baird said. $61 price target. Valuation call, as the company lacks near-term negative catalysts, Robert Baird said.

DigitalGlobe

(DGI)

was downgraded to hold, Benchmark said. $27 price target. Estimates also lowered, as the company lacks potential growth catalysts, Benchmark said.

Dril-Quip

(DRQ) - Get Report

was upgraded from underperform to buy, Bank of America/Merrill Lynch said. $101 price target. Company has good growth visibility over the next three years, Bank of America/Merrill Lynch said.

Davita

(DVA) - Get Report

was downgraded from buy to hold, Deutsche Bank said. Valuation call, based on a $130 price target, Deutsche Bank said.

Kirby

(KEX) - Get Report

was initiated with a market perform rating, Wells Fargo said. Valuation call, as the stock is already up 61% since July, Wells Fargo said.

Methanex

(MEOH) - Get Report

was downgraded to neutral, said UBS. The call is based on the recent run in the stock and valuation. Price target is now $39, said UBS.

PetSmart

(PETM)

was downgraded from overweight to neutral, Piper Jaffray said. $68 price target. Earnings growth will likely decelerate, Piper Jaffray said.

Solarcity

(SCTY)

was downgraded from buy to hold, Needham said. $18 price target. Deployment growth will likely slow down, Needham said.

Sandridge Energy

(SD) - Get Report

was downgraded from market perform to underperform, BMO Capital said. $4 price target. Stock will likely grind lower over the next six to 12 months, BMO Capital said.

Varian Medical

(VAR) - Get Report

was downgraded from neutral to sell, Goldman Sachs said. $79 price target. Consensus estimates now appear more reasonable, Goldman Sachs said.

MEMC Electronic

(WFR)

was upgraded to buy, Goldman Sachs said. $6.50 price target. Company is attractive, on a sum-of-the-parts valuation, Goldman Sachs said.

STOCK COMMENTS/EPS CHANGES

American Eagle

(AEO) - Get Report

estimates for FY13 and FY14 were increased, said UBS. Expenses should deleverage in Q1, but overall leverage for the year and increased fashion mix should help gross margins, said UBS. Price target remains $23.

Brown-Forman

(BF.B)

earnings estimates were updated after reporting fourth quarter results, said UBS. FY13 EPS was reduced by $0.02 to $2.70 and FY14 EPS was increased by $0.04 to $3.14. Based on the new FY14 EPS estimate, the price target was increased to $75, said UBS.

Impax Labs

(IPXL)

earnings estimates were reduced, said UBS. A new 483 warning letter had a lot more extensive issues, leading to uncertainty, said UBS. Price target was reduced to $17.

Newcastle Investment

(NCT)

earnings estimates were increased through 2014 after reporting fourth quarter results, said UBS. The update includes the announcement to acquire a 50% interest in a consumer loan portfolio from HSBC, said UBS. Price target increased to $14.

Staples

(SPLS)

earnings estimates through FY2014 were reduced after reporting fourth quarter results, said UBS. Aggressive sales guidance leads to uncertainty and the ODP/OMX merger will over shadow the stock, said UBS. Price target remains $13.

Shares of

Time Warner

(TWX)

now seen reaching $61, according to Credit Suisse. Spin-off of the publishing unit should help unlock value, according to Credit Suisse. Outperform rating.

Exxon Mobil

(XOM) - Get Report

earnings estimates were reduced, said UBS. The company provided a weaker than expected production outlook at its analysts meeting, said UBS. Price target remains $91.

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This article was written by a staff member of TheStreet.