Stocks were indicated to open lower on Monday, but investors know that the major stock indexes remain close to all-time highs. The primary trend that has prevailed for five or so years in this more than eight-year bull market is that investors have managed to keep finding new reasons to buy stocks after every sell-off. Many investors are also looking for new investing and trading ideas to generate gains and income.

24/7 Wall St. reviews dozens of analyst research reports each day of the week in an effort to find new investing and trading ideas for our readers. Some of these top analyst reports cover stocks to buy. Other calls are reiterations of ratings, and some even cover stocks to sell or to avoid.

Additional color and commentary has been added on most of the daily analyst calls. Consensus analyst price target data are from the Thomson Reuters sell-side research service.

These were the top analyst upgrades, downgrades and other research calls from Tuesday, September 5, 2017.

Chesapeake Energy Corp. (NYSE: CHK) was downgraded to Hold from Buy with a $4 price target (versus a $3.76 prior close) at Tudor Pickering. Chesapeake Energy has a consensus analyst target price of $5.22 and a 52-week trading range of $3.55 to $8.20.

Lululemon Athletica Inc. (NASDAQ: LULU) closed up 7.2% at $61.69 on Friday after earnings beat expectations and after some analysts raised their targets. Susquehanna joined in on the upgrades, raising its rating to Positive from Neutral, and it now has a $71 price target. Lululemon has a 52-week range of $47.26 to $72.70 and a consensus price target of $63.79.

Oracle Corp. (NYSE: ORCL) was started as Outperform with a $62 price target (versus a $50.62 close) at Credit Suisse. The 52-week range is $37.62 to $51.85, and the consensus price target is $55.16.

United States Steel Corp. (NYSE: X) was raised to Buy from Neutral with a $31 price objective (versus a $26.99 close) at Merrill Lynch. The stock has a 52-week range of $15.72 to $41.83 and a consensus price target of $27.50. Its shares were up 2.6% at $27.70, but this stock also fell from $31 to under $23 overnight back in April on disappointing earnings and guidance commentary.

Walt Disney Co. (NYSE: DIS) was raised to Outperform from Market Perform with a $116 price target (versus a $101.50 close) at Wells Fargo. Disney has a 52-week range of $90.32 to $116.10 and a consensus price target of $113.54.

YogaWorks Inc. (NASDAQ: YOGA) was up 15% at $3.80 as of Friday’s close, and its post-IPO trading range has been $3.29 to $5.85. YogaWorks was started with an Outperform rating and assigned a $7 price target at Cowen. Roth Capital started it with a Buy rating and a $7 price target.

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Other key analyst calls were seen in the following: