Check out the companies making headlines in midday trading: Oklo — Shares soared more than 16% on the heels of the nuclear startup's narrower-than-anticipated loss for the first quarter. Oklo posted a loss of 7 cents per share for the period compared to the 11-cent loss per share that analysts polled by FactSet had expected. eToro — Shares soared as the trading platform made its Nasdaq debut , opening at $69.69. The stock quickly added to that and was last above $72 per share, up roughly 27% from where the initial public offering was priced at — $52. Super Micro Computer — The server maker's stock surged 17%, extending the 16% gain it saw in the previous session. Earlier this week, Raymond James initiated coverage of the stock with an outperform rating, saying that artificial intelligence projects are "a long-term secular driver." Boeing — The aerospace stock gained 1%, hitting a new 52-week high during the session. The White House said Boeing and GE Aerospace, struck a $96 billion deal with Qatar Airways to sell it up to 210 aircraft. Shares of GE Aerospace were marginally higher following the announcement. Exelixis — Shares of the oncology company gained 19% after the company's first-quarter results beat on the top and bottom lines. Exelixis reported earnings of 55 cents per share on revenue of $555.4 million, above the 36 cents per share and $499.6 million that analysts had estimated, according to FactSet. The company also raised its full-year revenue guidance. Aurora Innovation — The autonomous vehicle stock dropped more than 7%. Uber Technologies announced a $1.0 billion convertible notes offering Tuesday, saying that the notes are exchangeable into Aurora shares. American Eagle Outfitters — The retail stock sank nearly 5% after American Eagle Outfitters withdrew its guidance for 2025 , citing "macro uncertainty." The company said it is writing off $75 million in spring and summer merchandise. It also expects revenue for its first quarter to decline about 5% compared to the prior-year period. PVH — Shares of the apparel maker rallied 8.2% on the back of Jefferies' upgrade to buy from hold . Jefferies said shares can stage a recovery as the Tommy Hilfiger and Calvin Klein parent undergoes a business transformation. Nvidia , Advanced Micro Devices — Shares of both chipmakers moved higher after securing deals with Humain , a Saudi company, to develop artificial intelligence models and build data center infrastructure. Bank of America also raised its price targets on the names following the announcement. Nvidia shares rose more than 3%, while AMD shares jumped nearly 5%. JD.com — U.S.-listed shares fell more than 4%. Analysts expect earnings growth to flatten this year, noting increasing losses in the food delivery unit, according to FactSet's StreetAccount, which also noted Morgan Stanley also cut its price target to $39 from $41. — CNBC's Alex Harring, Fred Imbert and Michelle Fox contributed reporting.