I downloaded a chain from the CBOE this morning.
Yesterday, an April 115$ Call Strike appended the alphas "DC" to the underlying symbol. Today I downloaded a CBOE chain and the same strike has "1017D115" appended to the underlying symbol. I saw something regarding OSI. My hope was that this is a glitch. My trading interface still uses the "DC" symbiology?
Is this the way it is to be from now on?
Yesterday, an April 115$ Call Strike appended the alphas "DC" to the underlying symbol. Today I downloaded a CBOE chain and the same strike has "1017D115" appended to the underlying symbol. I saw something regarding OSI. My hope was that this is a glitch. My trading interface still uses the "DC" symbiology?
Is this the way it is to be from now on?
