As of May 18, 2023, AnPac Bio-Medical Science Co. Ltd. has 1,588 shares failed to deliver, representing 7.20% of the average daily volume of 22,069 shares. Over the past year, the monthly average FTD is 1,678 shares, with the current level 5% below the historical average, indicating moderate settlement pressure. The weighted FTD ratio above 1% suggests potential liquidity constraints or heightened short-selling activity.