A super-exponential, log-periodic blowoff began in late 2012, culminating in early 2014, after which a second-order acceleration began after May 2014 and continues to date, although the price acceleration could be exhibiting exhaustion with the daily price breakdown today, Apr 27, 2015.
A typical "anti-bubble" trajectory following a bubble blowoff implies IBB declining eventually to ~100 (or even below).
Biotechs and AAPL are exhibiting a similar blowoff as did the Dotcom stocks in 1998-2000, homebuilders in 2005-06, and gold stocks in 2010-11.
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