Stock trading above sell lmt / below buy lmt price?

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

 

This can’t happen in regular trading as there is price protection through Reg-NMS.

 

Can it happen based on restrictions in order size? (All or none or do not redecue)

 

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

 

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

 

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