Best trading platform for day trader - IB or Fidelity or lightspeed

On the retail side, Fidelity's Luminex is unbeatable. Midcap to Largecap.

 

Can you add some more detail like platform?

 

https://luminextrading.com/about-us/ It does not sound like a retail platform.

 

The value equation is in rounding the block. We think of liquidity as price going out.

 

Did you take a trade?

 

yup, IB commission significantly reduced from ~70$ to ~10$, but need to check on any other ECN charges in daily activity statement, EOD. Have not tried MEMX yet. Will update you, thanks a lot though!

 

The commission you see includes everything.

 

Sorting AMD cost me $34.46, but covering cost was $0.67..still much better than what I was paying before.