I do this for fun to test my Microsoft Excel skills. I am in need of at least 10 years of contribution data (the more irregular, the better) people have made to their portfolios and want to benchmark the performance of different portfolios and strategies against things like "all in on QQQ" or "alternating between VOO and VTI", etc. Even just a formula that determines what contributions to make on a monthly basis over a 10 year period will suffice (i.e. 1000 dollars a month and increasing every year with CPI).
Any suggestions/interest on the sorts of things I should backtest as well would be greatly appreciated. Thanks in advance.
