ok, here is a rather basic question I have not seen answered anywhere ... (and please don't reply to use the search button as I did this for 5 hours already and no info ... include a URL if you do have info hidden somewhere on ET that I haven't found, please ...) On TWS (and other various other quote/trading platforms) the ticker is continually updated with Last Price and Last Size information. 1) For the NAZ, is this information the SAME as the time and sales info on Level II (excluding the bid/ask price/size/MM changes of course) 2) IF SO, does this information EXCLUDE trades completed out of sequence ? for example, does this ticker include trades that have gone off 1,4,5,20+ minutes previously, OR are these trades that have gone off IN SEQUENCE and are completely up to date ? 3) IF NOT, then where EXACTLY is the Last Price/Last Size ticker info coming from, and how accurate is it really ? It seems to me that IF the ticker is just a reprise of the T&S info without the 'rogue' / out of sequence trades filtered out, this makes the ticker info quite misleading and inaccurate ... maybe def knows more about this in regards to IB ??? any help/info greatly appreciated ... thanks.