Check out the companies making headlines before the bell. Ulta Beauty – Shares of the beauty retailer rose as much as 13% in premarket trading after a regulatory filing showed that Warren Buffett’s Berkshire Hathaway took a stake worth $266 million in the second quarter. The bet is relatively small for Berkshire, whose stock portfolio is worth more than $300 billion, so it’s possible that Buffett lieutenants Ted Weschler and Todd Combs are behind the bet. Walmart – The stock rose 7% after the retailer beat Wall Street expectations and lifted its full-year guidance, citing healthy consumers. The company posted adjusted earnings of 67 cents per share on revenue of $169.34 billion. Cisco Systems – Shares rose 6% after the networking company beat Wall Street’s fourth-quarter expectations and announced plans to lay off 7% of its workforce. The company said it is implementing a restructuring plan that will add $1 billion in pre-tax costs to its financial results. Tapestry – Owner of Coach and Stuart Weitzman saw shares rise 5% on strong quarterly results. Profits were 4 cents above expectations. Tapestry also topped revenue estimates. Nike – Shares of the sportswear company rose more than 4% after Bill Ackman’s Pershing Square Capital Management announced it had bought the stock in the second quarter. Pershing Square owned more than 3 million shares of Nike stock at the end of June, a securities filing shows. Snowflake – Cloud stock fell 4% following Wells Fargo’s downgrade from overweight to equal weight. Wells Fargo said Snowflake’s premium multiple is becoming increasingly difficult to justify as the company faces headwinds. Lumentum Holdings – Shares of the optical provider soared more than 14% higher on stronger-than-expected fourth-quarter results. Earnings came in at 6 cents per share, ahead of the FactSet estimate of 2 cents per share. Sales also exceeded expectations. Alibaba – The Chinese internet giant fell about 4% after Alibaba’s most recent quarter missed expectations. Revenue came in at 243.24 billion Chinese yuan ($34.01 billion), lower than the 249.05 billion yuan analysts expected, LSEG said. Net profit of 24.27 billion yuan missed the consensus estimate of 26.91 billion yuan. Deere – The agricultural machinery manufacturer rose 2.5%. Deere beat Wall Street’s third-quarter expectations, with earnings of $6.29 per share on revenue of $11.39 billion. That topped $5.63 per share, while analysts surveyed by LSEG expected revenue of $10.84. Robinhood – Robinhood added 2% after Deutsche Bank upgraded the stock to a buy rating, citing an attractive entry point following the recent sell-off and earnings revisions. Nucor – shares of the steelmaker rose about 1% after Morgan Stanley upgraded the stock to overweight, citing strong earnings growth potential in 2025 and 2026. Dutch Bros – Shares of the coffee chain rose 3% higher after an upgrade at UBS to buying at neutral. The bank said concerns about Dutch Bros’ slowing growth appear exaggerated and sees “stimulating growth potential” for the stock. – CNBC’s Yun Li, Alex Harring, Jesse Pound, Sarah Min and Michelle Fox contributed reporting