Astera Gains 3.42% Despite 22.87% Volume Drop Ranks 137th in Market Liquidity

On October 8, 2025, Astera (ALAB) closed with a 3.42% gain, despite a 22.87% decline in trading volume to $0.79 billion, ranking 137th in market liquidity. The stock's performance occurred amid a broader market consolidation phase following recent volatility.

Analysts noted that Astera's volume contraction reflects reduced short-term speculative activity, though the price advance suggests institutional positioning or long-term investor confidence remains intact. Technical indicators show the stock has maintained above key support levels since late September, with no immediate signs of reversal patterns.

To deliver an accurate back-test I’ll need to confirm a few practical details: Universe • Do you want U.S. listed equities only, or a different market (e.g., global, China A-shares)? • Should we exclude ETFs, ADRs, preferred shares, etc.? Weighting & transaction assumptions • Equal-weight every day (i.e., 1/500 per stock)? • Assume we buy at the day’s close and sell at the next day’s close, or use open prices for entry/exit? Data coverage & tool constraints • Our current single-ticker back-test module can’t directly hold 500 positions. • We can approximate by a) constructing a synthetic index series (equal-weighted daily portfolio) and back-testing that, or b) limiting the exercise to a representative proxy (e.g., an ETF tracking high-liquidity stocks). Please let me know which approach you prefer, along with any other assumptions you’d like to fix.