Monthly:
Mid-Month (10th–15th): Historical data leans toward mid-month for slightly lower average prices in both stocks and crypto, making it a reasonable choice for DCA. For example, a 2020 study by Vanguard found the 12th–15th often had lower S&P 500 prices compared to the 1st or 30th.
Weekly:
- Monday: Prices can be lower due to weekend news digestion or profit-taking after Friday closes. A 2017 study by CXO Advisory found U.S. stocks (e.g., S&P 500) often dip slightly on Mondays (average return -0.1% vs. +0.2% on Fridays).
- Wednesday: Midweek often sees lower volatility and slightly depressed prices, as per a 2020 Bespoke Investment Group analysis, making it a reasonable DCA day.
- Friday: Prices may rise due to pre-weekend optimism or short-covering, per historical data, making it less ideal.
