S&P 500 Overnight Effect: Weekdays vs Weekends vs Holidays

Explore the S&P 500 overnight effect. This analysis reveals which overnight periods (weekdays, weekends, holidays) yield the best returns historically.

Published · Updated · Methodology: Technical Indicators

  • Methodology: Technical Indicators
  • Content type: educational
  • Timeframes: Daily (implied by close to open)
  • Markets: S&P 500, SPY (ETF), Futures

Source video

Decoded from: I Backtested S&P 500 Overnight Trades: Weekdays vs Weekends vs Holidays by Quantified Strategies — watch the original

Key timestamps:

  • 0:00 - Introduction to overnight edge
  • 0:44 - Definition of overnight return calculation
  • 1:00 - Separation of overnight returns into three groups
  • 1:18 - Test rules for all groups
  • 1:25 - Data range used for backtest
  • 1:35 - Results for ordinary weekday nights
  • 1:40 - Results for weekends
  • 1:45 - Results for holiday nights
  • 2:00 - Win rate and profit factor for weekday nights
  • 2:05 - Win rate and profit factor for weekends
  • 2:09 - Win rate and profit factor for holiday nights
  • 2:18 - Strategy adjustment based on results

Topics

s&p 500 overnight effect · spx trading strategy · spy etf strategy · futures trading strategy · daily trading strategy · technical analysis · market tendencies · overnight strategy · tradingview strategy · pine script

About this strategy page

This trading strategy was decoded by Strategy Decoder's AI from a public YouTube trading video and turned into a structured, reviewable specification. In the interactive app this page shows the full entry and exit logic, risk management settings, the indicators involved with their parameters, AlgoWizard-compatible logic and a Pine Script export ready for TradingView backtesting — plus an automated backtest verdict when one has been computed for this strategy.

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