[4PM] The overnight sharp reversal down in stocks, the breaking of key trend lines from the July low, and the breach of a couple of key levels in several indexes most likely indicate that minor wave 2-up of (1)-down of P3-down (or wave B-up under a bullish count) is complete. The next leg of sell-off to fresh lows of 2010 has begun hours after the Fed QE2-light announcement. See Chart 1.
The notable reversal up in the US dollar index offers support of this bearish count (Chart 2).
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The July 30th low been breached in WLSH, RUT, COMPQ, but not yet in SPX, DJ, and NDX.
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In terms of a near term bear trap, it's possible that the sell-off is the end of an [x] wave of a triple-three minor 2-up (see Chart 3). Note that the proposed triple-three structure is an overlapping one, which in my mind is more credible than an non-0verlapping one. The July 20th low (1956.88 in SPX) is the next key level for the bullish count.