When strikes are missing, delta can be very off. Yesterday i looked for 20delta call strikes (QQQ) around 14DTE, only delta<=46 was available in the option chain (it only happens for certain DTEs not the whole chain). Also noticed that in the modeling tool. This is probably rare. But if I hadn't paused the trade, it would have triggered.
Can we have a delta range, e.g. 20 +/- 5?