, an annual return of 1100%. That's of course a very good year for an
investor, but not unheard of. It's unlikely to have happened by a
steady ratchet of 1% a day.
But if you could keep it up, after 30 such years, that's around 1032
dollars, or more than
times all the money on earth.
During
their heyday, some high frequency trading firms were rumored to require
very little capital, hold no overnight positions, and be profitable
every day. Technically (depending on how little capital was actually
required) they would return much more than 1% a day, every day. Maybe
10% a day, maybe 100%, maybe 1000%, maybe more. But they couldn't
really increase the amount every day, so they didn't get the crazy
compounding effect. That is to say, they were getting a huge return on
the small amount of capital required to run the system, but a much
smaller return on their total equity, which was mostly just sitting
around in a cash account that kept increasing. They did get zillions of
dollars at a steady rate, like a broken ATM that just keeps spitting
out cash, so don't feel too bad for them
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