4 ms·
All the consolidated feeds, CTS, CQS, UTDF, UQDF are consumed for options, but they are a secondary thing and not used for pricing in real time. Raw feeds are
by insaneirish 13y ago
All the consolidated feeds, CTS, CQS, UTDF, UQDF are consumed for options, but they are a secondary thing and not used for pricing in real time.
Raw feeds are used. That said, Nasdaq is the most important underlier for many things in options, and that could be why some options trading stopped.
- resu 13y agoPHLX, NOM, ISE/Gemini all halted trading and all exchanges halted options trading on Nasdaq listed symbols until Nasdaq came back up at ~3:40. Yes, most sophisticated co-located firms probably use raw feeds, but how do you facilitate trading when the official feed for the underlying is down and the symbols aren't even trading on their listed exchange? (Nasdaq down from ~12 to ~3:40)