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Sam's portfolio has two securities. The Pfizer stock has an expected return of 14% and a standard deviation of 38%. The Moderna stock has an
Sam's portfolio has two securities. The Pfizer stock has an expected return of 14% and a standard deviation of 38%. The Moderna stock has an expected return of 14% and a standard deviation of 19%. If the correlation between Pfizer and Moderna stocks is -1, what is the lowest possible standard deviation that Sam's portfolio can have?
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