US stock trades have transitioned to settling in 1 day instead of 2, marking a significant shift in Wall Street's operations. The move aims to benefit investors by reducing risk and enhancing efficiency. The change to T+1 settlement has been met with both celebration and skepticism, with some highlighting the potential for improved capital efficiency and reduced risk. Foreign investors are preparing for challenges in securing dollars before the deadline, potentially leading to failed trades. The transition to a faster settlement cycle is seen as a positive step towards further adoption of blockchain technology in finance.