Check out the companies making headlines yesterday:

Herbalife (NYSE: HLF): Health and wellness products company Herbalife (NYSE: HLF) rose by 6.9% on Tuesday after Maxim Group initiated coverage on the company with a "Buy" rating and a $20.00 price target. See our full article here.

Is now the time to buy Herbalife? Access our full analysis report here.

Vertex Pharmaceuticals (NASDAQ: VRTX): Biotech company Vertex Pharmaceuticals (NASDAQ: VRTX) rose by 3.8% on Tuesday after Wolfe Research upgraded the stock from "Peer Perform" to "Outperform" and issued a $548 price target. See our full article here.

Is now the time to buy Vertex Pharmaceuticals? Access our full analysis report here.

Micron (NASDAQ: MU): Memory chips maker Micron (NYSE: MU) rose by 8.6% on Tuesday after a broader market rally drove investor optimism in artificial intelligence and big tech stocks. See our full article here.

Is now the time to buy Micron? Access our full analysis report here.

Amkor (NASDAQ: AMKR): Semiconductor packaging and testing company Amkor Technology (NASDAQ: AMKR) rose by 5.2% on Tuesday after investment firm Needham & Company significantly raised its price target on the stock, pointing to surging demand for artificial intelligence chips. See our full article here.

Is now the time to buy Amkor? Access our full analysis report here.

Palantir Technologies (NASDAQ: PLTR): Data analytics company Palantir Technologies (NASDAQ: PLTR) rose by 2.9% on Tuesday after a broader market rally drove investor optimism in artificial intelligence and big tech stocks. See our full article here.

Is now the time to buy Palantir Technologies? Access our full analysis report here.