Check out the companies making headlines in premarket trading: Alphabet — The parent of Google and YouTube jumped more than 6% after a federal judge ruled that Alphabet can keep its Chrome browser. But Google won't be able to sign exclusive search deals and also has to share its data, the ruling said. Macy's — The retailer jumped 13% after posting second-quarter results that beat expectations. Macy's earned an adjusted 41 cents per share on revenue of $4.81 billion, while analysts polled by LSEG expected a profit of 18 cents per share on revenue of $4.76 billion. Macy's also raised its earnings and revenue outlook. Zscaler — The cybersecurity stock rose roughly 2% after fiscal fourth-quarter results topped analysts' estimates on the top and bottom lines. Zscaler earned an adjusted 89 cents per share on revenue of $719 million, while analysts polled by LSEG were looking for profit of 80 cents per share on $707 million in revenue. The company also issued rosy guidance for the current quarter. Six Flags Entertainment — The amusement park operator slipped about 2% after Truist downgraded Six Flags to hold and trimmed its earnings estimates. Dollar Tree — The discount retailer fell more than 7% after reporting second-quarter earnings and revenue that exceeded analysts' expectations. The stock had already soared 62% over the past six months and 49% year to date in 2025. Teck Resources — The Canadian miner fell nearly 2% in premarket trading. UBS upgraded Teck to buy from neutral, saying the risk/reward is improving after recent underperformance. The stock is down almost 10% over the past three months and more than 15% over the past six. Vir Biotechnology — The biotech gained more than 2% after Evercore ISI initiated coverage with an outperform rating. Analyst Cory Kasimov sees "a compelling asymmetric setup developing for VIR, driven by a lack of appreciation of how quickly the story could turn around." — CNBC's Fred Imbert, Sarah Min and Alex Harring contributed reporting.
