Hi,
I would like to build a bid/ask ladder for a level II display. Here are my questions:
1) Do I have to "calculate" the position of an price/volume/MMID record by myself or is the position somewhere provided in the "U"- record (have not found anything so far).
2) How are records updated ? Can I assume that bid/ask records with same price and MMID override each other ?
3) How are old records deleted ? Is there any field in the "U" record indicating a deletion of a record ?
4) I failed to find a reference on "Reason code" and "Condition code" at www.nasdaq.com (as suggested by the docs). Could you please provide a link to more detailed information ?
5) What the meaning of "Source ID" ? Is it equivalent to "Market code" or "Exchange Id" ?
Regards
Dierk Droth
www.trademagic.net
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