Thoughts on OSI so far?
We’re currently in the transitional phase of OSI, which kicked in late last month. When entering an options order, it’s prefix is the root symbol, followed by a descriptive tail (called a series key) of the expiration date, strike price, and whether it is a call or a put.
This transition is designed for people to get used to the new formatting, without moving away from the root symbols that option traders are already familiar with (an argument I don’t quite agree with, I think ultimately we’re more familiar with the underlying stock symbol). Starting in March, the new OSI will kick in, featuring the underlying symbol followed by the series key.
How has this transition affected your options trading? Chime in.

