Typically, the market is open for 252 trading days in a given year. The specific holidays that bring trading to a halt are New Year's Day, Martin Luther King Jr.
Understanding Global Market Trading Days Calendar Differences
Intuitively, one might assume this extra day would add an additional trading day. When analyzing historical data or backtesting a strategy, using the correct divisor is essential to avoid misstating the annualized volatility or Sharpe ratio.
On the rare occasion that February 29 falls on a weekday and is not a market holiday, the year will contain 253 trading days. These closures are non-negotiable and apply to the entire equity market.
Understanding Global Market Trading Days Calendar Differences
Professional money managers often calculate the "daily average" return based on 252 periods. The financial markets do not operate on a standard Monday-to-Five schedule, and the calendar dictates active price discovery and liquidity.
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