Looking for another platform for day trading.

Interactive Brokers is the most sophisticated platform retail traders can get.

I don't really trade, but when I sell a large position I like that I can route it to dark pools so I don't impact my trade price.

At some point it would be nice if we could get legal access to contracts for difference, as opposed to having to hedge with single stock futures, but it is what it is right now. At least in the USA, unless that's changed and I'm unaware of it.

Their margin rates are really good. I have portfolio margin between various accounts, and I negotiated that down to 4.3%, which is smoking in the present climate. I think a retail trader can get to 6.1% depending on portfolio size. That makes a difference if you short a short. I know someone on here told me one time I was full of bologna becuase the cost to carry that trade was too expensive, but I think I'll believe my own experiences rather than a text book definition and explanation.

It's ala carte, so you pay for feeds, various market depths, etc.

Again, in my view, it's the best platform a retail trader / investor can get. It's not really designed for an inexperienced trader. It's not as unsophisticated as TOS as an example, which isn't a very good platform at all, for reasons I'm not going to take the time to type out.

It works well for me becuase I hedge between various assets classes. It can and will work for a trader also. Again, I'm not really a trader, although by some definitions, not accurate, I am.

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I can't speak for a taxable brokerage account, but a Fidelity broker told me earlier this year that I could basically day trade within any of my IRA accounts (traditional and Roth) if I converted them to margin accounts.

I also have a good bit of cash in my accounts held in Fidelity's SPAXX earning just under 5%. That is all "settled cash". The broker told me how to check how much settled cash I have in each account. Whatever that amount is on any given day, I can day trade within that amount.

So as an example, if you had $10K in settled cash. You could buy up to $10K for any equities that day and immediately sell them or at least sell them same day. Likewise if you had $100K in settled cash, you could buy up to $100K and immediately sell it or at some point same day.

At the point you sell an equity, the cash from it is unsettled until I think the morning of the 2nd business day and then becomes settled cash again.

But if you change your account to a margin account, you don't even have to worry about settled cash at least according to Fidelity.