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Strategies & Market Trends : Options 201: Beyond Obi-Wan-Kenobe

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To: tyc:> who wrote (738)2/23/2003 3:47:36 PM
From: OX  Read Replies (2) of 1064
 
just stumbled onto your post tyke...
intuitively it seems rather unlikely that 22% is the annualized HV given that in the past 50days, from simply eyeing the chart, your stock has traveled from 20-25 (roughly), which is in itself a 25% move.
i think if u take the sqrt of the 50day volatility then *sqrt(252/50), you get an annualized HV much closer to reality.

rather interesting using BB's as a basis for HV, can you cite a reference?
and why not use 1sd vs 2sd (or 3sd)?

McMillan's OSI has a good HV formula fwiw.
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