I think they only add back your buying power overnight
you could immediately buy, because the buying power is from margin. it should be fine, because margin interest is calcuated using overnight balance.
zecco really sucks. I have used etrade/tradefreedom (canada). buying power is immediately added after selling, even for cash account
it makes sense, because the fund is due also on settlement date. Using zecco's rule, fund only delivered to account on settlement day for selling, while immediately subtracted for buying not settlement date!
MJK58:All balances will update completely the next day, no matter whether you have a cash account or a margin account. The balance may not show it, but if you know how much you just sold off, you will know how much you can buy IMMEDIATELY after you have executed a sell. Just last week (and the week before that) I sold X amount of shares of a company for Y dollars. And literally two minutes laters, after a little calculator time, I bought shares of a new company for that same value of Y dollars. No problems whatsoever, no fees or charges, nothing whatsoever. Then the next day, my balance was right where I had it calculated. A delay is no problem when you have a trusty calculator with add, subtract, multiply, and divide with you.