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Settlement: T+1, T+2

Settlement is the process by which a trade is completed—shares are delivered and money changes hands. The "T" stands for trade date, and "T+2" means settlement occurs two business days after the trade is executed. "T+1" means one business day. This timeline isn't arbitrary: it exists because the infrastructure required to move shares and money between accounts is complex and deliberately designed for risk management. When you trade a stock, your trade is confirmed immediately, but the actual transfer of ownership and payment typically doesn't happen until T+2. This gap between trade and settlement creates operational risk that clearinghouses exist to manage.

The clearing and settlement system is the infrastructure that stands between traders and the actual transfer of securities and cash. When you buy shares, you don't receive direct ownership—you receive a claim on shares held by a clearinghouse or custodian. The Depository Trust & Clearing Corporation (DTCC) is the primary clearinghouse for US equities, operating the system through which nearly all US equity trades settle. The DTCC acts as the counterparty to both sides of your trade—your broker's counterparty to the seller, and the seller's counterparty to you. This structure guarantees that if one party to a trade fails to perform, the DTCC steps in and ensures settlement happens. This guarantee is critical to market stability: it prevents a cascade of failures where one trader's default wipes out their counterparties.

The move from T+3 to T+2 to eventually T+1 reflects technological improvement and risk reduction. When trades were settled by physical stock certificates delivered by courier, T+5 or longer was necessary. As electronic systems matured, settlement accelerated. The US moved to T+2 in 2017 and is considering T+1 for further automation benefits. These seemingly technical changes have real implications for financing costs, default risk, and the speed at which traders can access cash from sales. Understanding settlement mechanics illuminates why your broker holds cash in escrow, why margin requirements exist, and why the trading system is designed as it is—not for speed, but for resilience and protection against cascading failures.

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