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May 16, 2017 at 7:55 comment added WJA So the only volatiliy that you can estimate of your portfolio is using the Historical Std Dev. That cant be right no?
May 16, 2017 at 7:51 comment added Matthew Gunn @JohnAndrews Of the stocks, but not the portfolio, right? If your portfolio is 1 share of Google, 1 share of Apple. How can you figure out what the intraday high of your portfolio is? It's not the high of Google plus the high of Apple because the highs may not have occurred at the same time. You need the full intraday path of Google and Apple to get the intraday high of your portfolio.
May 16, 2017 at 7:42 comment added WJA But you do know the High, Low and Close
May 12, 2017 at 19:51 history answered Matthew Gunn CC BY-SA 3.0