Quote from Thunderdog:
I'm sorry, spyderman, but you are way off. Assuming that the poster was indeed referring to 300% per month rather than on an annualized basis, and assuming that he compounded at least monthly to account for the larger bet size resulting from the added equity in his account, then his annualized return after monthly compounding is, in fact, 16,777,216.00%. The calculation is easy enough: 4 to the power of 12. (4 represents 1, the multiple of his initial capital, + 3 representing the 300% increase per period, in this case being monthly. The 12 represents the number of months.) Alternatively, you can calculate it "manually" month to month. So, if we were to invest a mere $1,000 with this kindly gentleman, we would have an account at the end of the year in the amount of $16,777,216,000.00. Pretty heady stuff! Heck, put me in for $5.