RATINGS CHANGES

AbbVie (ABBV) - Get Report was downgraded to market perform from outperform at BMO Capital. $66 price target. Uncertainty is increasing around major growth drivers, BMO said.

Bojangles (BOJA) - Get Report was initiated with a hold rating at TheStreet Ratings. You can view the full analysis from the report here: BOJA.

Corning (GLW) - Get Report was downgraded to sell at Drexel Hamilton. $14.50 price target. The valuation is less attractive, now that shares have rallied 15% year-to-date, Drexel said.

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Alliant Energy (LNT) - Get Report was downgraded to equal-weight from overweight at Barclays. The valuation is less attractive, based on a $39 price target, Barclays said.

Mattress Firm (MFRM) was downgraded to underperform from neutral at Bank of America/Merrill Lynch. $28 price target. Visibility continues to wane, analysts said.

Navios Maritime Midstream Partners (NAP) was upgraded to hold at TheStreet Ratings. You can view the full analysis from the report here: NAP.

J.M. Smucker (SJM) - Get Report was downgraded to hold from buy at Jefferies. $143 price target. The valuation is less attractive, with the stock up 16% over the past six months, Jefferies said.

This article was written by a staff member of TheStreet.