On which DAY should you DCA? Here's the answer: 5 Year backtest, over 1.8k data points

I am sure this is a question we have all asked our selves. What day of the week is the best to invest / DCA? Well after analyzing over 1.8k data points though a 5 year BTC backtest, here are the results:

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TL.DR for those busy people out there: Thursday is the best day to DCA - by a margin of less than 1%

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Yes. believe it or not, there is a day that is best to DCA in... and it is Thursday. However, the margin difference is so small (0.4%), that for most people it doesn't make any difference to think about this. However, for those of us who have always wanted the answer to this, here goes the data.

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First I downloaded all the data and price of BTC for the daily price for the past 5 years (I won't show this as it is over 1.8k data points (too long to post here).

After that I sorted them by day, putting them in order.

Once I have done this, I assumed a Weekly DCA strategy of 5 USD. You want to put in 5 USD each week, but are not sure which day to do so on. So I multiplies every price point by an entry position of 5 USD, and calculated how much we would have today in BTC.

Here is the data for that:

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BTC Accumulated if investing 5 USD per Week on each day

We can already see that Thursday is winning. Despite having less entry days that Tuesday and Wednesday (Due to calendars), it managed to accumulate the most BTC.

Now there numbers too seem pretty small, so I converted it into profits. This would give us a better idea, as well as take into consideration those days with a new extra entry positions (Tuesday and Wednesday)

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Profit if investing 5 USD per week on different days

Here we can see that Thursday is once again a clear winning, beating Wednesday by 19 USD, even though Wednesday did have more buy in opportunities

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Conclusions:

For most people this data is pretty useless, if not a fun piece of trivia. The difference in profit is so small (sub 1%) that most people will not be bothered by this

Thursday is the best day to DCA

Wednesday is the worst day to DCA

Maybe this could make a difference to big players, but to the average person, it is probably more useful as trivia knowledge

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I hope I answered some of your questions and one of the most common speculative questions seen on r/cc

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As always, good luck and happy trading

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*Disclaimer: Not Financial advice. Past results are not indicative for future profits