Here are the biggest calls on Wall Street on Tuesday: Citigroup reiterates Micron Technology as buy Citi raised its price target on shares of Micron . "We raise our price target on Micron from $425 to $840 as we believe Micron is raising DRAM prices +40% in C2Q following peer Samsung's +100% price hike in 1Q." UBS upgrades Jazz Pharmaceuticals to buy from neutral UBS says it's bullish on the company's cancer drug, Ziihera. "We upgrade JAZZ to Buy from Neutral and raise our PT to $307 (from $188), driven by improved confidence in base business resilience and Ziihera's commercial potential." Morgan Stanley initiates X-Energy at overweight Morgan Stanley says the nuclear company is firing on all cylinders. " XE i s a leading designer of advanced nuclear technology and manufacturer of advanced nuclear fuel." Canaccord upgrades Progyny to buy from hold Canaccord says it sees revenue growth for the benefits management company. "We are upgrading Progyny to BUY with a $30 price target." Morgan Stanley upgrades UMC to overweight from equal weight Morgan Stanley said in its upgrade of United Microelectronics that the semiconductor foundry company is compelling. "We cite attractive valuation and earnings upside from stronger mature node demand." Barclays reiterates CrowdStrike as overweight Barclays raised its price target on CrowdStrike ahead of earnings in early June to $650 per share from $550. "We raise our PT to $650 using a 44x multiple on our FY31E FCF discounted back given our more positive outlook on the FY guide and CRWD's AI opportunities." Rosenblatt reiterates Broadcom as buy The firm says the stock remains undervalued ahead of earnings in early June. "Despite recent share price appreciation, with AVGO up 26% since the company's last report vs. a 45% gain in the SOXX, we believe the market continues to underprice Broadcom's AI opportunity." Loop initiates Corpay at buy Loop says the payment processing company has margin upside. "We are initiating Corpay , Inc with a BUY rating and $406 PT. Corpay is a business to business payment processor. Segments include vehicle payments (fuel cards), corporate payments, lodging payments and other." Benchmark initiates Interface at buy The firm says the carpet tile and flooring company is "primed to take advantage of the secular trends occurring within the industry." "Interface Inc, headquartered in Atlanta, Georgia, is a global designer and manufacturer of high-quality commercial flooring including carpet tile, carpet plank, premium area rugs, luxury vinyl tile (LVT), and rubber flooring." HSBC reiterates Nvidia as buy HSBC raised its price target on Nvidia ahead of earnings to $325 per share from $295. "Expecting another beat & raise, with more upside to FY28e earnings..." Read more . UBS upgrades Assured Guaranty to buy from neutral UBS says the company has "earnings resilience." "We upgrade AGO t o Buy, with shares trading at ~40% discount to operating book value — unwarranted, in our view, given its market leadership and earnings resilience." HSBC upgrades Credicorp to buy from neutral HSBC says the Peruvian bank has plenty of upside. "We upgrade our rating on Credicorp t o Buy from Hold. We have a favorable view on the industry and the company, and Peru is experiencing an economic upswing supported by record copper prices." Bernstein upgrades American Tower to outperform from market perform Bernstein says "this is the moment" to buy the cell tower company stock. "Our initiation emphasized that AMT is an exceptionally well-run company, fully understood by the market...we now believe the market is overestimating risk while undervaluing potential upside." Barclays reiterates Tesla as equal weight Barclays says it's sticking with its equal weight rating on Tesla. "Focus remains on core growth initiatives – Robotaxi launches/scaling, FSD expansion, and Optimus v3 launch. Specifically, we believe the greatest focus is around Robotaxi scaling, with investors awaiting progress of increased vehicles which are fully driverless / no safety monitor." Guggenheim upgrades StubHub to buy from neutral Guggenheim says the ticketing company has "reset street expectations." "We are upgrading shares of StubHub Holdings to BUY (from NEUTRAL) with a $12.50 price target (up from $8.50) representing ~30% potential upside to yesterday's close." Read more . Oppenheimer reiterates Costco as outperform The firm raised its price target on Costco to $1,160 from $1,100 ahead of earnings next week. "We believe defensive characteristics of the model and COST's superior value proposition on the omni-channel/fuel fronts should continue to drive outsized share gains. We still see the potential for a special dividend and/or a stock split, which we believe could represent positive catalysts for shares."