Tupperware ( TUP) was initiated with an outperform rating at BMO Capital. $90 price target. Company can return more than 20% over the next year, including the 3.3% dividend yield, BMO Capital said.

Texas Instruments ( TXN) was downgraded at Bernstein Research to market perform from outperform. $38 price target. Cyclical indicators suggest a near-term peak for the industry, Bernstein said.

Unit ( UNT) was downgraded to hold at TheStreet Ratings.

Walgreen ( WAG) was upgraded at UBS to buy from neutral. Upside to the Alliance Boots merger and health reform should trump near-term comp concern. Estimates increased and new price target is $48, UBS said.

Zoetis ( ZTS) was initiatd with a neutral rating at Bank of America/Merrill Lynch. $35 price target. Stock has already gained 30% since its IPO, BofA/Merrill said.

Zoetis was initiated with a neutral rating at Goldman Sachs. Given valuation, there is limited upside, Goldman said. Price target is $33.

STOCK COMMENTS/EPS CHANGES

Blackrock ( BLK) price target was increased at Citigroup to $285. The new price target comes with a higher multiple, reflecting greater comfort around flow and margin leverage and declining execution risks.

Chipotle ( CMG) price target and earnings were increased at UBS. First-quarter comps should be between 0% and 2%, setting a solid tone for 2013, UBS said. New price target is $330.

Chevron ( CVX) price target was raised at Cowen Securities. Shares are now seen reaching $133. Company can deliver solid production growth, Cowen said. Buy rating.

Chevron estimates were updated at UBS. Earnings estimates through 2014 were increased. At the company's analyst meeting management reaffirmed prior growth targets, UBS said. Price target remains $120.

Sirius XM ( SIRI) estimates were increased at Lazard Capital Markets. Estimates were raised through 2014. Company will likely convert some debt to equity, Lazard Capital Markets said. Buy rating and $4 price target.

Yum Brands ( YUM) numbers boosted at Credit Suisse. Shares are now seen reaching $70. Estimates were also increased, given improving comp sales in China, Credit Suisse said. Outperform rating.

Yum Brands price target and estimates were raised at Credit Suisse. The China February comps showed marked improvement, Credit Suisse said. New price target is $70.

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