Frontrunned!

Q

Quanto

Volume of a strike was just 1.
Is it possible to inspect from which market participant (ie. the four-letter ID of the MM or brokerage firm etc.) this order came in?

More info: order was placed pre-market, orderbook had Bid and Ask. I took the Bid for my ShortSelling order (actually a CoveredCall, ie. a NetDebit order). IMO it had to get filled as everything was exactly calculated. The new LastPrice is my own offer. Ie. someone else got the fill...

More more info:
https://www.investopedia.com/terms/f/frontrunning.asp
 
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More details? You know there are 16 option exchanges and even if you are first at a price, they can match it on another exchange. Or, step up in prices a pay a little more. Neither are a violation.

Quanto said:
Volume of a strike was just 1.
Is it possible to inspect from which market participant (ie. the four-letter ID of the MM or brokerage firm etc.) this order came in?
More...
 
Robert Morse said:
More details? You know there are 16 option exchanges and even if you are first at a price, they can match it on another exchange. Or, step up in prices a pay a little more. Neither are a violation.
More...
In the OP above I just added some more info.
 
Option order books do not show option data in Realtime before the stocks open at 9:30am and then have an opening rotation. The rest of your comment I did not follow. If order to buy stock and sell a call on the exchange COB, someone needs to want to trade with you at that price.

Quanto said:
order was placed pre-market, orderbook had Bid and Ask
More...
 
Robert Morse said:
Option order books do not show option data in Realtime before the stocks open at 9:30am and then have an opening rotation. The rest of your comment I did not follow. If order to buy stock and sell a call on the exchange COB, someone needs to want to trade with you at that price.
More...
I don't think TDA sends such CCs out to the exchange COB, but handles it rather internally/locally in-house. Both stock price and option premium were matching for a fill.
 
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