Editor's Note: Green and red arrows refer to intraday stock price movement.

NEW YORK (

TheStreet

) --

CHANGE IN RATINGS

Acorda Therapeutics

(ACOR) - Get Report

upgraded at Piper from Underweight to Neutral, Piper Jaffray said. $30 price target. Company could now see approval for Fampyra in Europe.

AK Steel

(AKS) - Get Report

upgraded at Morgan Stanley from Equal-weight to Overweight. $24 price target. Estimates also upped, as the company continues to expand its margins.

The Buckle

(BKE) - Get Report

downgraded at Goldman from Neutral to Sell, Goldman Sachs said. $35 price target. Company has limited earnings drivers.

CF Industries

(CF) - Get Report

upgraded at JP Morgan from Neutral to Overweight, JP Morgan said. $170 price target. Company generates solid free cash flow.

Clean Harbors

(CLH) - Get Report

rated new Perform at Oppenheimer. $110 price target. Stock is already factoring in solid growth potential.

Walt Disney

(DIS) - Get Report

upgraded at Stifel from Hold to Buy. $50 price target. Estimates also boosted.

Consolidated Edison

(ED) - Get Report

downgraded at BofA/Merrill from Neutral to Underperform, Bank of America/Merrill Lynch said. Valuation call.

The Gap

(GPS) - Get Report

upgraded at Deutsche from Sell to Hold, Deutsche Bank said. $18 price target. Valuation call, following the latest selloff.

Limited Brands

(LTD)

upgraded at Goldman from Sell to Neutral, Goldman Sachs said. $39 price target. Sales momentum is accelerating. Neutral rating.

Mosaic

(MOS) - Get Report

upgraded at Stifel from Hold to Buy, Stifel Nicolaus said. $77.50 price target. Secondary offering removes pricing risk from the Cargill sale.

Mosaic

upgraded at JP Morgan from Neutral to Overweight, JP Morgan said. $74 price target. Company should benefit from rising potash and healthy DAP prices.

Maxim Integrated

( MXIN) upgraded at Goldman from Sell to Neutral. $25 price target. Company is seeing better earnings power.

ON Semiconductor

(ONNN)

downgraded at Goldman from Buy to Neutral, Goldman Sachs said. $12 price target. Valuation call, as the stock is up 55% over the past year.

PG&E

(PCG) - Get Report

downgraded at Jefferies from Buy to Hold, Jefferies said. $48.50 price target. Estimates also cut.

Pinnacle Entertainment

(PNK) - Get Report

upgraded at Credit Suisse to Outperform from Neutral. Solid early 2Q11 trends, worries over margins, TX gaming fading, Credit Suisse said. Price target boosted to $18 from $14.

Parexel

(PRXL)

downgraded at Goldman from Neutral to Sell. $20 price target. Consensus expectations appear too optimistic.

Silicon Laboratories

(SLAB) - Get Report

rated new Buy at Needham. $51 price target. Company should see demand growth across the board in the coming quarters.

UIL Holdings

(UIL)

downgraded at BofA/Merrill from Neutral to Underperform, Bank of America/Merrill Lynch said. $33 price target. Estimates also boosted, given growth potential of the gas utility.

UnitedHealth

(UNH) - Get Report

upgraded at Jefferies to Buy, Jefferies said. $60 price target. Company is seeing lower costs.

Yingli Green Energy

(YGE)

upgraded at Citi to Hold from Sell. Best positioned of the major module companies in China, Citigroup said. Price target trimmed to $9.75 from $11.

End of report.

This article was written by a staff member of TheStreet.