NEW YORK (

TheStreet

) --

CHANGE IN RATINGS

Assured Guaranty

(AGO) - Get Report

was downgraded to hold at TheStreet Ratings.

Broadcom

(BRCM)

was downgraded at Goldman Sachs to neutral from buy. $30 price target. Mobile and wireless momentum has stalled, Goldman Sachs said.

Berry Petroleum

(BRY) - Get Report

was upgraded at Wunderlich to buy from hold. $50 price target. Stock has fallen to pre-acquisition levels, Wunderlich said.

Juniper

(JNPR) - Get Report

was downgraded at RBC Capital to sector perform from outperform. Valuation call, based on a $24 price target, RBC Capital said.

KAR Auction

(KAR) - Get Report

was upgraded at Bank of America/Merrill Lynch to buy from underperform. $30 price target. Volume recovery appears to be underway, BofA/Merrill said.

Read: BlackBerry Explores Strategic Alternatives

Lithia Motors

(LAD) - Get Report

was downgraded at BofA/Merrill to neutral. Valuation call, based on a $70 price target.

LKQ Motors

(LKQ) - Get Report

was upgraded to neutral from underperform at Bank of America/Merrill Lynch. $32 price target. Estimates were also increased, as the company is seeing higher organic sales growth.

LinkedIn

(LNKD)

was upgraded at Needham to buy from hold. $280 price target. Company has several unexploited growth opportunities, Needham said.

Lowe's

(LOW) - Get Report

was upgraded at Canaccord Genuity to hold from sell. $48 price target. Company can continue to benefit from a housing market recovery, Canaccord Genuity said.

Read: Tesla Drops on Lazard Downgrade

NetApp

(NTAP) - Get Report

was upgraded at Robert Baird to neutral from underperform. $44 price target. Company is cutting costs and aggressively returning cash to investors, Baird said.

Onyx Pharmaceuticals

(ONXX)

was downgraded from to market perform from outperform at Leerink Swann. Valuation call, based on a $140 price target, Leerink Swann said.

Southwest Gas

(SWX) - Get Report

was upgraded at Brean Murray to buy from hold. $56 price target. Company has strong visibility for better earnings growth, Brean Murray said.

Sunoco Logistics

(SXL)

was upgraded at UBS to buy from neutral and given a $72 price target. Distribution is increasing, and other segments will become larger cash-flow drivers.

T-Mobile

(TMUS) - Get Report

was upgraded at Oppenheimer to perform from underperform. Company has improved its network and is seeing lower churn, Oppenheimer said.

Tesla

(TSLA) - Get Report

was downgraded at Lazard Capital Markets to neutral from buy. Stock is pricing in flawless execution, Lazard Capital Markets said.

ING U.S.

(VOYA) - Get Report

was downgraded at J.P. Morgan to underweight from neutral. $30 price target. Outlook lackluster and excessive valuation, J.P. Morgan said.

Walker & Dunlop

(WD) - Get Report

was downgraded to hold at TheStreet Ratings.

Vitamin Shoppe

(VSI) - Get Report

was downgraded at Credit Suisse to neutral from outperform. $46 price target. Company lacks near-term catalysts, Credit Suisse said.

Read: You'd Be Surprised Americans Saved This Little Each Year

Stock Comments / EPS Changes

Apple

(AAPL) - Get Report

price target was reduced at Needham. Shares are now seen reaching $595. Company is facing increased competition, Needham said.

Rockwell Collins

(COL)

price target was raised at Jefferies to $75. Purchase of ARINC changes the mix, Jefferies said. Hold rating.

Mallinckrodt

(MNK) - Get Report

estimates were reduced at UBS. Reflect higher SG&A and R&S expenses, said UBS. Price target is $43.

Micron

(MU) - Get Report

earnings estimates were raised at Citigroup. Reflect increased contribution from Elpida, said Citigroup. Price target is $19.

Nvidia estimates were cut at Citigroup. Margins will be pressured in coming quarters, said Citigroup. Price target is $15.

Regency Energy

(RGP)

estimates were reduced at UBS. Estimates were cut to reflect increased capex and interest expense as well as a lower Lone Star contribution, said UBS. Price target is $28.

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This article was written by a staff member of TheStreet.