cash close

The final price of an asset at the end of regular daytime trading hours, excluding extended-hours trading.

The cash close refers to the final transaction price of a security or index at the official end of the regular trading session. In the United States, this occurs at 4:00 PM Eastern Time. Unlike closing prices reported during extended-hours trading, the cash close is established during the period of peak daily liquidity and institutional participation, making it the definitive benchmark for the trading day. This price is determined by a closing auction on major exchanges, which aggregates buy and sell interest to find a single market-clearing price. Financial institutions, index providers, and mutual funds use the cash close as the official valuation point to calculate daily returns, net asset values (NAVs), and historical performance metrics. Investors monitor the cash close to gauge market sentiment and identify key support or resistance levels. Because high-volume institutional orders are executed at the close, a breakout above a resistance level on a cash close basis is considered far more significant than an intraday spike. A common pitfall for retail investors is relying on pre-market or post-market prices, which trade on thin volume and can exhibit extreme volatility that does not reflect the true consensus of the cash close.

On Friday, an exchange-traded fund has a cash close of $100.00 at 4:00 PM. Over the weekend, bad economic news breaks, and by Monday at 8:00 AM, the fund's pre-market price drops to $95.00. The $5.00 difference ($100.00 cash close minus $95.00 pre-market) represents an overnight gap down of 5% from the official benchmark price.