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largest algo spike i've seen in months...at 10:17 almost 500 issues. Oct 21, 2011
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largest algo spike i've seen in months at 10:17am. Almost 500 stocks in the spike. Oct 21, 2011
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very heavy quote rates in RVBD and CMRE this morning Oct 21, 2011
Posts by Themes
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The Daily Market Pressure Accumulator Still Shows No Sign Of A Sustainable Low In AAPL
I've posted an update on the AAPL Accumulators. See http://www.hftalert.com/aapl_lows.htm
3:58pm Algo Disappears
At 1pm, still very low levels of algo activity today
The chart above shows overall levels across all exchanges. See how the spike during the 12:35 minute sticks out above the background level? This particular spike moved SPY from 122.44 to 122.72 in 45 seconds. In a dull market, these moves up in price caused by the algorithm typically trade back most of the move.