Laura Tanner, CFP with SAS Advisors, LLC in San Francisco is a former research scientist with a PhD in Neurobiology.  In an article published on she tells how she learned the hard way regarding not diversifying her concentrated stock and option position with a previous employer.

The moral for the story is that individuals receiving company stock and options need an easy way to calculate their level of concentration and to evaluate the risk / reward tradeoff of their holdings.  This video on Concentration Concepts explains how to do this using

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