0

I'm new to this so my apologies if this is out of place or not a "correct" use of backtesting.

Is there a free service (or python package) for backtesting investment strategies for Vanguard mutual funds?

I have an automatic investment that occurs monthly but I'm curious how it would have improved (or not) over the past 12 months if I had contributed every 2 weeks instead of once per month.

As an example with fake numbers, what would the difference be over the past 12 months between contributing $1000 every month versus $500 every 2 weeks to VFINX?

  • Have you tried pulling data from the usual sources? Yahoo or Google? And then a simple spread sheet? – JTP - Apologise to Monica Jun 3 '17 at 14:41
  • 1
    I pulled the data for 2016 from Yahoo and used a spreadsheet to manually calculate the differences (without accounting for dividends). It looks like the Python backtrader module will make the process a bit more repeatable. – devteam Jun 4 '17 at 19:08
  • You might want to check out Quantopian. – Jack Moody Oct 22 '18 at 1:52
1

I've been using https://www.portfoliovisualizer.com/backtest-portfolio

In the few cases I've manually tested it out using code, it seems to be accurate..

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.