It's a video showing a mere 10 seconds worth of trade activity for BlackBerry on October 2 — and the whole thing runs for over three-and-a-half very busy minutes.
http://www.youtube.com/watch?v=NRUCWIosL_k
Earlier this week, amid news of more-than-expected Blackberry losses and the potential for a buy-out (namely by FairFax Financial), the troubled smartphone maker's stock value warbled and dropped down to $7.92 — more than a full dollar below what was anticipated. This generated a flurry of activity — and as is typical these days, it all went down so very, very fast; computers trade on the order of milliseconds.
http://io9.com/watch-10-seconds-of-high-frequency-stock-trading-in-sup-…