Opra Unveils Timetable for Symbology Changes
Under the timetable, subscribers to Opra's feed will begin testing new messages with expanded symbols early next year as part of a phased implementation that will stretch to the middle of 2009. Officials working on the plan say that major changes to Opra codes are necessary because the existing five-letter codes do not provide an accurate representation of expiration dates for options contracts.
The first three characters of the current codes represent the option root symbol, while the remaining
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