An index future ticks higher on a burst of buying. A beat later, the best offer on one of its larger constituents lifts by a couple of cents, and the…
Pull a single day of time and sales for any active stock and you'll get a tidy column of prints: a price, a size, a timestamp, sometimes a venue code.…
Watch a fast tape for a few minutes and the rhythm gives itself away. Trades, quote changes, and cancellations don't arrive like a metronome. The book goes quiet, then a…
Watch a fast tape long enough and you'll see it: a stream of prints that keep lifting the offer, one after another, twenty or thirty in a row, and not…
Picture a 5,000-share market order hitting a thin small-cap at 10:47 in the morning. The last trade printed at 24.10, so you'd expect a fill somewhere near there. Instead the…