The move is also getting a tailwind from a risk-on tape, with the Nasdaq (QQQ) up 3.12% and Technology (XLK) leading sectors higher at 3.76%.Why Nasdaq-100 Inclusion Boosts Astera Labs StockThe changes take effect before the market opens on June 22.Because ETFs and passive funds tracking the Nasdaq-100 (including QQQ, which manages over $300 billion) must own the new constituents, that mechanical demand can create sustained buying pressure into the rebalance.Market conditions are supportive today, with the S&P 500 up 1.93% and breadth positive. The advance/decline ratio is 1.8, with seven sectors advancing. In that context, ALAB's strength reflects stock-specific fuel plus a strong tech day.Astera Labs Stock: Key Levels and Momentum InsightsAstera Labs has shown impressive performance over the past year, with a staggering 12-month gain of 312.61%.Currently, the stock price sits significantly above its moving averages: 26.7% above the 20-day SMA, 63% above the 50-day SMA, and 115.9% above the 200-day SMA.The MACD indicator is currently below its signal line, indicating a potential cooling of momentum after recent gains. This suggests that while the stock is performing well, caution may be warranted as upward pressure appears to be fading.Astera Labs Earnings Preview: What Analysts ExpectThe next major catalyst for the stock arrives with the August 4, 2026 (estimated) earnings report.