Do note that there is a maximum amount of aggressiveness, beyond which you basically guarantee that you go broke while making trades with positive expected value. If you flip a coin that wins you twice as much as you lose, and you bet your entire bankroll, you'll eventually lose the coin flip and with it your entire savings.
For broad-market equity indexes, this point is at roughly 140% stocks / -40% cash. So it's not close to being an issue with current market expectations for a 100% equity portfolio, but generally speaking there is a level beyond which you cannot further optimize for upside at the expense of downside.
For broad-market equity indexes, this point is at roughly 140% stocks / -40% cash. So it's not close to being an issue with current market expectations for a 100% equity portfolio, but generally speaking there is a level beyond which you cannot further optimize for upside at the expense of downside.