Astera Labs, which makes chips and hardware that move data inside AI data centres, is emerging as a contender for the S&P 500 Index. The company, valued at roughly $50 billion, went public in March 2024 and is now profitable. Revenue rose about 104.5% over the past year as hyperscalers spent heavily on AI infrastructure. The company recently launched its Aries 7 portfolio of high-speed links. The stock trades near 178 times trailing earnings and about 56 times expected profit next year. Northland downgraded it on valuation, and the shares sit well below their $499 high. Astera also relies on a small group of hyperscale buyers. Hedge fund holders rose to 73 at the end of the second quarter of 2026, from 53 the quarter before.

Micron's stock has risen about 350% in a year, but three rival memory stocks may offer better value, according to one analyst view. SK Hynix posted second-quarter revenue of 79.3 trillion Korean won (about $54.9 billion), up 257% year over year and 51% sequentially. Micron grew 31% sequentially. SK Hynix also has a lower market cap and a more attractive P/E ratio. Sandisk shares have surged more than 800% in a year. It expects fiscal 2027 first-quarter revenue of up to $10.8 billion, or 20.4% sequential growth. Astera Labs, which builds rack-scale AI infrastructure, more than doubled its second-quarter sales. It guides to $550 million in third-quarter sales at the midpoint, a 40.2% sequential rise.

Northland Capital Markets downgraded Astera Labs to "Market Perform" from "Outperform" on October 9, citing valuation concerns, even though it expects earnings to rise. Analyst Gus Richard said shares had passed Northland's earlier target, but he still sees estimates climbing as the Scorpio X AI switch ramps up. Astera expects third-quarter revenue of $540 million to $560 million, up from a record $392.4 million in the second quarter. Non-GAAP earnings per share are guided to $1.16 to $1.21, against $0.80 in the previous quarter. The growth leans on one lead customer, though more than 10 customers are engaged on Scorpio X. Shares closed at $285.82 on October 16, about 43% below their June peak of $499.48. Fubon Securities recently began coverage with a "Buy" rating and a $500 price target.