Stock trading above sell lmt / below buy lmt price?

T

tomas262

I am quite new to trading stocks and wonder what matching system is used with NYSE or NASDAQ so that market trades above my sell limit (profit-target) price
If I offer 100 @ 51 how can the market go above to 51.01 without first lifting my offer at 51? With futures I could never see this happening

Thank you
 
@Robert Morse Look at the screenshot ... trading BNTX. Happens with other stocks as well....
Funny
 

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what comes to my mind now is that data reflects order book at a different exchange compared to orders being routed by IB smart to another exchange
 
tomas262 said:
what comes to my mind now is that data reflects order book at a different exchange compared to orders being routed by IB smart to another exchange
More...
Even then should not happen in thick stocks where lot of ECNs are there with spreads not so wide. It is not an exchange issue, there is some issue on your broker side
 
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