What are the rules regarding the listing of 12.5 point strike prices?
Quarterly and Serial options: On the expiration day of options in the March quarterly cycle, strike prices in 12.5-point increments will be listed on the two serial, and next March quarterly option expirations. For example, on Monday, September 13, 1999 (expiration day for Sep 99 futures and options), 12.5-point strike prices would be listed on October and November serial options, and December quarterly options. One-year Mid-Curve options (“shorts”): the first quarterly and two serial expirations are eligible to trade in 12.5-point strike price increments at any given time.
