Here’s a look at the biggest gainers at midday: GameStop – Meme shares plunged more than 28% after the video game retailer issued a poor earnings report. Net sales in the first quarter were US$881.8 million, a year-over-year decrease of 29%. The company also said it would sell additional shares. Meme stock trader “Roaring Kitty” is scheduled to begin his live stream at noon ET, which could give the stock a further boost. Vail Resorts — Shares fell 12% after disappointing quarterly results. After the close on Thursday, the ski resort owner said it earned $9.54 a share on revenue of $1.28 billion, missing the LSEG consensus estimate of $9.97 a share on revenue of $1.3 billion. Oddity Tech — The beauty and wellness company’s stock surged 23% after its board of directors approved a $150 million share repurchase plan for its Class A common stock. The company also raised its second-quarter profit forecast. Semtech — Shares of Semtech plunged 18% after the semiconductor maker announced that Chief Executive Paul Pickle was leaving the company. Dr. Hong Q. Hou, current Semtech board member, has been named as his successor. Semtech said the decision was made because of “disagreements between the board and Mr. Pickle regarding how the CEO and the board should work together to achieve the best interests of shareholders.” Semtech also reiterated its second-quarter forecast. DocuSign – The electronic signature company fell nearly 5% despite reporting fiscal first-quarter results Thursday that beat analysts’ expectations. DocuSign also expects fiscal second-quarter revenue to be in the range of $725 million to $729 million, compared with the London Stock Exchange Group’s (LSEG) consensus estimate of $726 million. Additionally, the company authorized $1 billion in stock repurchases. Planet Labs — Shares rose 9.3% after first-quarter results beat expectations. The satellite imagery provider posted an adjusted loss of 5 cents per share on revenue of $60.4 million. Analysts expected a loss of 7 cents per share on revenue of $60 million, according to LSEG. Geron — Shares of the biopharmaceutical company rose more than 20% after the U.S. Food and Drug Administration approved its blood disease treatment Rytelo. While analysts expected approval, the approval came earlier than expected, according to FactSet. Skechers – shares rose more than 2% after Bank of America upgraded the stock to a buy rating. The bank believes wholesale conditions are improving for the footwear maker. Samsara — Shares of the software maker fell 12% despite reporting better-than-expected profits and revenue after the bell on Thursday. Samsara expects second-quarter revenue to be between $288 million and $290 million, above analysts’ expectations of $287 million. However, earnings per share are expected to be between breakeven and 1 cent, compared with the consensus estimate of 1 cent. Braze — Shares of Braze rose 4.4% after the customer engagement platform reported a loss of 5 cents per share, below expectations, and first-quarter revenue that topped estimates. Braze’s second-quarter guidance also topped analysts’ expectations. Gold stocks – Newmont Mining Corp. and Freeport-McMoRan Copper and Gold Co. both fell about 4% on lower gold prices. Precious metals streaming and royalty company Royal Gold also fell 4%. —CNBC’s Sean Conlon and Yun Li contributed reporting.