24/7 Wall St.

Earnings season is charging fast, and the stock market keeps challenging new highs now that a deal has been made in Washington, D.C. Investors and traders alike have to be considering which stocks to buy and which ones to sell. 24/7 Wall St. reviews many Wall Street analyst research reports each morning to find new ideas for our readers. These are this Thursday’s top analyst upgrades, downgrades and initiations seen from Wall Street research firms.

Boeing Co. (NYSE: BA) was reiterated Buy with $164 price target and raised estimates at Sterne Agee. It was also reiterated Buy and the target raised to $150 at Argus, and Canaccord Genuity raised its target price to $150 when it reiterated its Buy rating.

Caterpillar Inc. (NYSE: CAT) was downgraded to Market Perform from Outperform at Raymond James and downgraded to Neutral at J.P. Morgan.

Chesapeake Corp. (NYSE: CHK) was raised to Buy from Neutral at Citigroup.

Corning Inc. (NYSE: GLW) was downgraded to Neutral from Buy at Sterne Agee after a 14% gain, as it is time to take profits now, in a late afternoon call on Wednesday.

F5 Networks Inc. (NASDAQ: FFIV) was downgraded to Neutral from Buy at Bank of America Merrill Lynch.

Ferro Corp. (NYSE: FOE) was raised to Outperform from Neutral at Credit Suisse.

Fusion-io Inc. (NYSE: FIO) was downgraded to Equal Weight at Morgan Stanley and downgraded to Underweight at J.P. Morgan. Sterne Agee lowered estimates as well.

Goldman Sachs Group Inc. (NYSE: GS) was raised to Buy from Hold at Deutsche Bank.

Green Mountain Coffee Roasters Inc. (NASDAQ: GMCR) was downgraded to Hold from Buy at Argus.

Lam Research Corp. (NASDAQ: LRCX) was raised to Buy from Neutral at Goldman Sachs.

Prosperity Bancshares Inc. (NYSE: PB) was downgraded to Market Perform at Keefe Bruyete & Woods.

Statoil ASA (NYSE: STO) was raised to Buy from Hold at Soc-Gen.

U.S. Bancorp (NYSE: USB) was downgraded to Hold at Deutsche Bank Securities.