Analysts' Actions: RHT, ADTN, CVX, DAL, DIS

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NEW YORK ( TheStreet) -- CHANGE IN RATINGS

Archer-Daniels-Midland ( ADM) downgraded at Morgan Stanley from Overweight to Equal-weight, Morgan Stanley said. Crop situation could worsen from consensus expectations.

Adtran ( ADTN) downgraded at Mizuho from Neutral to Underperform, Mizuho said. $20 price target. Service providers are shifting capex spending away from wireline.

Adtran downgraded at Stifel from Buy to Hold, Stifel Nicolaus said. Guidance is shy of expectations.

BroadSoft ( BSFT) downgraded to sell at TheStreet Ratings.

Sierra Bancorp ( BSRR) upgraded to buy at TheStreet Ratings.

Chevron ( CVX) upgraded at JP Morgan from Underweight to Neutral, JP Morgan said. $120 price target. Risk/reward is improving at current levels.

Delta Air Lines ( DAL) rated new Sell at Goldman. $9.30 price target. Legacy carriers are more vulnerable to earnings pressure.

Walt Disney ( DIS) upgraded at Wells from Market Perform with Outperform, Wells Fargo said. Company is firing on all cylinders and can generate solid free cash flow growth.

El Paso Electric ( EE) downgraded at Jefferies to Hold from Buy, Jefferies said. $34.50 price target. Lower rate base.

Family Dollar ( FDO) downgraded at BofA/Merrill from Neutral to Underperform, Bank of America/Merrill Lynch said. $60 price target. Estimates also cut, given lower expected margins.

Merck ( MRK) upgraded at Citigroup to Buy from Neutral, Citigroup said. $50 price target. Troika of new products.

ONEOK ( OKE) upgraded at BMO to Outperform from Market Perform, BMO Capital Markets said. $51 price target. Incrementally more positive on NGL prices.

Perrigo ( PRGO) downgraded at Canaccord from Buy to Hold, Canaccord Genuity said. Valuation call, based on a $125 price target.

Red Hat ( RHT) downgraded at Oppenheimer to Perform from Outperform, Oppenheimer said. Waiting for new product strategy.

Smithfield Foods ( SFD) downgraded at BofA/Merrill from Buy to Underperform, Bank of America/Merrill Lynch said. $19 price target. Strong dollar and rising feed costs will cut into earnings.

Supervalu ( SVU) upgraded at UBS to Neutral from Sell, UBS said. $4 price target. Covenant risk is removed.

Supervalu downgraded at JP Morgan from Overweight to Neutral, JP Morgan said. Save-a-Lot brand proving to be not worth as much as expected.

Trinity Industries ( TRN) rated new Buy at Stifel. $31 price target. Valuation call, following the recent price correction.

Tyson Foods ( TSN) downgraded at Morgan Stanley from Equal-weight to Underweight, Morgan Stanley said. Higher grain prices could persist.

Tyson Foods downgraded at BofA/Merrill from Buy to Underperform, Bank of America/Merrill Lynch said. $16 price target. Lower demand will likely cut into margins.

Alleghany ( Y) rated new Neutral at JP Morgan. Valuation call, based on a $355 price target. TRH purchase should ultimately help augment growth.

STOCK COMMENTS / EPS CHANGES

Adtran ( ADTN) numbers lowered at Jefferies. Shares of ADTN now seen reaching $21, Jefferies said. Estimates also lowered on wireline. deterioration. Hold rating.

Adtran estimates, target reduced at Credit Suisse. Shares of ADTN now seen reaching $22, according to Credit Suisse. Estimates also cut, given the company's cautious outlook. Neutral rating.

Adtran numbers cut at UBS. Shares of ADTN now seen reaching $28, UBS said. Estimates also lowered on lower than expected results and guidance. Buy rating.

Broadcom ( BRCM) numbers lowered at Oppeneheimer. Shares of BRCM now seen reaching $45, Oppenheimer said. Estimates also lowered on uncertain macro. Outperform rating.

Chevron ( CVX) estimates reduced at Morgan Stanley through 2014, Morgan Stanley said. Company is seeing slower international production growth. Overweight rating and $126 price target.

KLA-Tencor ( KLAC) added to Top Picks Live! at Citigroup. Foundry orders will rebound sooner in 2H12 than NAND in 1H13.

Marvell Technology ( MRVL) estimates lowered at JMP through 2013, JMP Securities said. Disk drive and wireless handset businesses appear to be tracking below plan. Market Perform rating.

Noble Energy ( NBL) numbers cut at Guggenheim. Shares of NBL now seen reaching $117, according to Guggenheim. Estimates also reduced, given higher exploration costs. Buy rating.

Northern Technologies International ( NTIC) target cut at Craig Hallum to $18. Rate of uptake in oil and gas products is slow. Buy rating.

NYSE Euronext ( NYX) numbers cut at Credit Suisse. NYX estimates were reduced through 2014, Credit Suisse said. Company is realizing lower volumes. Neutral rating and new $28.50 price target.

Constellation Brands ( STZ) target raised at UBS to $35, UBS said. DOJ concerns proactively addressed. Buy rating.

Texas Instruments ( TXN) numbers lowered at Oppenheimer. Shares of TXN now seen reaching $35, Oppenheimer said. Estimates also lowered on macro slowdown. Outperform rating.

Yum Brands ( YUM) target cut at Morgan Stanley to $75, according to Morgan Stanley. Company will likely see lower sales in China. Overweight rating.

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