As of Jun 20, 2025, Rein Therapeutics Inc. has 17,000 shares failed to deliver, representing 40.69% of the average daily volume of 41,775 shares. Over the past year, the monthly average FTD is 1,627 shares, with the current level 945% above the historical average, indicating elevated settlement pressure. The weighted FTD ratio above 1% suggests potential liquidity constraints or heightened short-selling activity.