Astera’s $1.04 Billion Volume Surges 37.48% to 87th in U.S. Stock Liquidity Amid Speculative Positioning

Astera’s trading volume reached $1.04 billion on Sept. 16, 2025, surging 37.48% from the prior day and ranking it 87th among U.S. stocks by liquidity. The shares closed 3.24% higher, outperforming broader market trends.

Recent developments suggest heightened institutional interest in the stock, with multiple large orders observed in the order book. Analysts noted unusual activity in the options market, where put volume spiked to a 60-day high despite the equity’s rally. While no official earnings or corporate announcements were disclosed, market participants attributed the momentum to speculative positioning ahead of an anticipated industry conference next week.

Back-testing of a strategy involving daily rebalancing of the top 500 U.S. stocks by volume shows limitations in current tools. The available platform supports single-ticker or event-based tests but cannot replicate a full portfolio rotation model. Two approaches are proposed: using broad ETFs as proxies for benchmarking, or executing custom code with external data to simulate daily selections and next-day returns across the entire equity universe.