I think Bright has a number of guys who are actively managing money. I would think Echo does too. Carlin used to have a few small hedge funds operating from their space and I think that became their focus a few years ago.
Several of prop firms will not allow "third party" deposits. why not just get a prime brokerage account and do it the correct way?
Why would you manage clients money in a "CHOP SHOP"? Why not work with a clearing firm, get good comission rates and set up shop? Day trading prop shops are finished, over, cooked, done. Everyone I started off with at Schonfeld, has created their own trading group outside a prop model or Trades on their own through a clearing firm. No body I know is at a "shop" anymore...Hell even schonfeld changed their Shop Model into a suto hedgefund. I'm confused How are Prop's even around anymore? Most traders wised up.
Don't you need a big account to work directly with a clearing firm? I would think most prop traders are working with ~5k deposits.