To some of the future generation of our readers: Ned's grandchildren Erik Beitel, Sophia Beitel, Miranda Beitel, Chloe Elton, Jean Paul Elton, Petra Elton, Johanna Elton, and Klara Elton, and Marty's grandchildren Samuel Gruber, Jack Gruber, and Ava Gruber.

Get Modern Portfolio Theory and Investment Analysis, 9th Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.