Recent content by q0987

thx

Hello rb7, Sorry, I still have problems to understand the example C. C -- NBBO: 0.70 - 0.80 Accept a buy stop limit order for stop price 0.75 and price 1.6 NBBO moves to 0.75 – 0.80 The order is elected but it gets an unsolicited cancel because limit is priced through the 1.60 threshold...

Hello rb7, C -- NBBO: 0.70 - 0.80 Accept a buy stop limit order for stop price 0.75 and price 1.6 NBBO moves to 0.75 – 0.80 The order is elected but it gets an unsolicited cancel because limit is priced through the 1.60 threshold. Based on the formula, the buy order threshold is 0.80 +...

https://business.nasdaq.com/media/PHLXOrderRiskManagement_tcm5044-53209.pdf When the contra side NBBO or the internal market BBO is at or less than $1.00, orders with a limit more than 100% through the contra side NBBO will be rejected. When the contra side NBBO or the internal market BBO is...