If you’re doing quantitative analysis and stats arb this is possible, but the low barrier of entry means most alphas decay quickly. Would love to be proved wrong, but I’ve seen enough quant funds to know how quickly they can crash if they are not constantly updating models, which requires staff and data (which is expensive).You do not understand that you do not need any outside money when you have a high sharpe strategy and you do not need an ISDA contract with a large investment bank to make money. A high sharpe strategy can be created without expensive tech too. Then you get so fast to your max. limit size you can handle that is just pure nonsense to start a hedge fund etc.
Another problem is that if you cannot scale your strategy even a high sharpe one can fail due to the frequency of trading. You can have a 10sharpe but it won’t matter if you only can generate 1-2 trades a year. If you have 100k and lever up 3-4x it’d take you longer to reach your capacity than it would for your alpha source to decay.
To increase trading frequency you need staff, which is expensive. No you don’t need an isda but you do need sales coverage if you’re trading with meaningful size (10k+ shares).
Sharpes are also time varying so it is misleading to extrapolate a high sharpe into the future… what’s that saying? The worst 10yr performance of your backtested strategy are the subsequent 10yrs…
