We had an interesting thread about Lump sum vs. DCA a while back. I wonder if anyone changed his mind. Today I found a video where they backtest five ways to invest based on a research paper by Charles Schwab:
All five are long term investors, no traders, and the backtest covers 20 years ending in 2020. Each investor receives $2,000 at the start of each year which they invest in specific ways
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Peter Perfect (best timer): invests the $2000 on the day of the year with the lowest closing price.
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Ashley Action (lump sum): invests the $2000 on the first trading day of the year.
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Matthew Monthly (DCA): splits the $2000 into 12 equal parts to invests on the first trading day of each month.
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Rosie Rotten (worst timer): invests the $2000 on the day of the year with the highest closing price.
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Larry Linger (cash): buys Treasury bills waiting for the best time to invest.
Results at 9:53. Spoiler alert, lump sum and DCA are almost identical.
Trick question: What’s wrong with this backtest?
Because the procedure is flawed (IMNSHO) I’m going to get the S&P 500 2000 - 2020 data from Yahoo and do a proper backtest. Too complicated for a spreadsheet so I need to write a bit of code.
You Shouldn’t Time The Market (Here’s Why)| Joseph Carlson Ep. 251
https://www.youtube.com/watch?v=pJQzqYOAgRg
The backtest: https://www.youtube.com/watch?v=pJQzqYOAgRg&t=408s
The results: https://www.youtube.com/watch?v=pJQzqYOAgRg&t=593s
The Captain