SINL

The methodology for identifying exchange-listed options has changed.

To get a better idea about how the new options symbology works, take a look at the Guide to Options Symbols published by Scottrade.

The new OSI format replaces the 5 digit option code with a new alpha-numeric system code. For example, under the old option symbol system,  the symbol for the BIDU June 2010 650 call was BIAFX. Under the new option symbol system, the code for this option contract is BIA100619C00650000.

It appears that brokerage firms will be using modified option symbol systems to create a more user friendly modified option symbol format for their clients.