If you're talking about HFT and front running (which HFTs do whether you like it or not) a retail trader can't compete in that sector. HFT operates on algorith

If you're talking about HFT and front running (which HFTs do whether you like it or not) a retail trader can't compete in that sector. HFT operates on algorithms that mostly involve making money on the spread by running ahead of the brokers, buying the cheap stuff, and selling it to the broker who needs it. They don't trade on market microstructure, mostly because all of it starts to fall apart at the tick level. 250k is CERTAINLY enough to invest in futures contracts. You can do it with much less. Much much less. Futures are highly leveraged instruments. You can diversify by trading multiples of futures contracts (or e-minis depending on account size) because you're only required to post initial and maintenance margin. You can easily blow up your account, but if you're just TRADING 5000 is enough to start selling a few contracts. If you're looking to start building something sustainable 10k is enough. But, the more the better.