Stocks were indicated marginally higher on Friday when the headline GDP report of 2.9% growth beat the 2.5% expectation. The earnings floodgates remain wide open, and investors keep proving that they will buy each pullback. High valuations and a bull market that is seven and a half years old just are not stopping investors. These same investors are also looking for new ideas to generate gains or income ahead.

24/7 Wall St. reviews dozens of analyst research reports each morning of the week to find new investing and trading ideas for our readers. Some of these analyst research reports cover stocks to buy, and others cover stocks to sell or to avoid.

These are the top analyst upgrades, downgrades and initiations seen on Friday morning:

AK Steel Holding Corp. (NYSE: AKS) was raised to Buy from Hold and the price target was raised to $6.25 from $5.50 (versus a $5.15 prior close) at Jefferies. The firm sees a reflation momentum with a lower balance sheet risk, and it believes that the prospects for the U.S. steel market have notably improved. AK Steel has a 52-week trading range of $1.64 to $7.09 and a consensus analyst price target of $5.94.

Alphabet Inc. (NASDAQ: GOOGL) was last seen down 1.5% at $829.50 after earnings beat expectations. Wedbush Securities maintained its Underperform rating and $700 target. Credit Suisse reiterated its Outperform rating and raised its target to $1,120 from $1,070. Jefferies reiterated its Buy rating and $1,000 price target. The 52-week range is $672.66 to $838.50, and the consensus price target is about $946.00.

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Amazon.com Inc. (NASDAQ: AMZN) was last seen down 4.3% at $782.85 after earnings were dragged down on content spending. Wedbush maintained its Outperform rating and $900 target. Credit Suisse kept its Outperform rating but cut the target to $1,000 from $1,050. Jefferies reiterated its Buy rating and $950 price target. Amazon has a 52-week range of $474.00 to $847.21, and it had a consensus price target of about $920.

Boeing Co. (NYSE: BA) was reiterated as Buy and the price target was raised to $160 (versus a $143.31 close) at Argus, noting that Boeing continues to benefit from strengthening demand in the commercial aerospace sector. Boeing has a 52-week range of $102.10 to $150.59 and a consensus price target of $148.76.

ConocoPhillips (NYSE: COP) was raised to Overweight from Neutral with a $53 price target (versus a $44.00 close) at Piper Jaffray. The 52-week range is $31.05 to $57.24, and the consensus price target is $51.91.

Nokia Corp. (NYSE: NOK) was downgraded to Neutral from Buy at BNP Paribas. Nokia just joined the 52-week low club on Thursday, after falling 8.3% to $4.73 in its New York trading session. It has a 52-week range of $4.71 to $7.63 and has a consensus price target of $6.85. Nokia was indicated down 3.6% more at $4.56 on Friday.

Twitter Inc. (NYSE: TWTR) managed to close up 0.6% at $17.40 on Thursday after earnings and shares were indicated up 0.6% at $17.50 on Friday. Twitter was raised to Perform from Underperform at Oppenheimer. Goldman Sachs maintained its Buy rating but lowered its target to $22 from $23. Twitter has a 52-week range of $13.73 to $30.15 and a consensus price target of $16.43.

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Other key analyst upgrades and downgrades were seen as follows: