Can we do legging when we use such as iron condor or diagonal calendar spread at start ? If yes, When is the best time in doing legging (due to greeks and market condition )? 2. Is it true when we do spread, the premium (debit or credit) that we see on screen is not the actual number (different from the trade floor) ?
1- You can leg as much as you want, but you'll be at the risk of the market. So for condors, if you think the security is trending up, you can try to sell the put spread near mid market, then offer a limit call spread higher than the offer and hope your right. 2-The floor and the complex order book will see the net debit or credit on the spread. I assume your trading platform allows you to enter it that way.