James Simons
The Simons Foundation Autism Research Initiative aims to improve the diagnosis and treatment of autism disorders. The hedge fund billionaire, whose daughter is autistic, has committed more than $200 million to research.


This article is from the November 21, 2011 issue of Fortune.
Last updated November 10 2011: 1:28 PM ET
Join the Conversation

Fortune contributor Brent Schlender shares some of the stories and personal photographs he collected during more than two decades as Steve Jobs' chronicler and confidant.

Most stock quote data provided by BATS. Market indices are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer.

Morningstar: © 2014 Morningstar, Inc. All Rights Reserved.

Factset: FactSet Research Systems Inc. 2014. All rights reserved.

Chicago Mercantile Association: Certain market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved.

Dow Jones: The Dow Jones branded indices are proprietary to and are calculated, distributed and marketed by DJI Opco, a subsidiary of S&P Dow Jones Indices LLC and have been licensed for use to S&P Opco, LLC and CNN. Standard & Poor's and S&P are registered trademarks of Standard & Poor’s Financial Services LLC and Dow Jones is a registered trademark of Dow Jones Trademark Holdings LLC. All content of the Dow Jones branded indices © S&P Dow Jones Indices LLC 2014 and/or its affiliates.