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<DIV>Hi RT's,</DIV>
<DIV> </DIV>
<DIV>I just downloaded Windows on Wall St. (WOW), upgrade 7.5. It now
includes all the Greeks, delta, gamma, theta, and Vega. The user has a
choice of historic Greeks or implied Greeks (historic delta, implied delta,
historic gamma, implied gamma, etc.). The difference is slight but
noticeable. For example for an OEX Aug 725 call (OEZ HE) the historic
delta is 0.595 and the implied delta is 0.575</DIV>
<DIV> </DIV>
<DIV>I assume the difference in the calculations are that historic delta uses
historic volatility in the calculation and implied delta uses implied
volatility, however I do not know this for certain.</DIV>
<DIV> </DIV>
<DIV>I have not seen any discussion of implied vs. historical Greeks in any
reference books. Can anyone provide more information, particularly if
there is a preference of one vs. the other?</DIV>
<DIV> </DIV>
<DIV>Thanks in advance.</DIV>
<DIV> </DIV>
<DIV>
Good luck and good trading,</DIV>
<DIV> </DIV>
<DIV>
Ray Raffurty<BR><BR></DIV></BODY></HTML>
</x-html>From ???@??? Mon Jul 19 20:46:53 1999
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To: REALTRADERS@xxxxxxxxxxxx
Message-Id: <1999719171212241@xxxxxxxxxxxxx>
Subject: PMB services
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Status:
Has anyone used PMB services for online futures trading? Has anyone heard ony feedback about the
quality of trade execution with these guys? Where are their offices located and how long have
these guys been in business?
Thanks for any response
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