'''James Harris Simons''' (født [[25. april]] [[1938]]) er en amerikansk [[matematiker]], [[milliardær]] [[hedgefond]]-direktør og filantrop.<ref>{{Cite web|url=https://www.forbes.com/profile/jim-simons/|title=Jim Simons|website=Forbes|access-date=14. november 2018|archive-date=15. november 2018|archive-url=https://web.archive.org/web/20181115031555/https://www.forbes.com/profile/jim-simons/|url-status=live}}</ref> Han er grundlægger af [[Renaissance Technologies]], en kvantitativ hedgefond der ligger i [[East Setauket]], [[New York (delstat)|New York]]. Simons og hans fond er kendt for at være [[Kvantitativ analyse (økonomi)|kvantitative investorer]], der anvender maetmatiske modeller og [[algoritme]]r til investeringer. Som følge af konsistente [[afkast]] i Renaissance og dens Medallion Fund, bliver Simons beskrevet som den "største investor på [[Wall Street]] og mere specifikt den "mest succesfulde hedgefond-forvalter nogensinde."<ref>{{Cite web|url=https://www.institutionalinvestor.com/article/b1hxhbvc55xtfq/Bitter-Lawsuits-Epic-Meltdowns-Vicious-Arguments-Jim-Simons-Renaissance-Made-Him-Billions-But-It-Came-at-a-Price|title=Bitter Lawsuits. Epic Meltdowns. Vicious Arguments. Jim Simons' Renaissance Made Him Billions – But It Came at a Price.|website=Institutional Investor}}</ref><ref>{{Cite web|title=The secret behind the greatest modern day moneymaker on Wall Street: Remove all emotion|url=https://www.cnbc.com/2019/11/05/how-jim-simons-founder-of-renaissance-technologies-beats-the-market.html|last=Stevens|first=Pippa|date=2019-11-05|website=CNBC|language=en|access-date=2020-05-11|archive-date=25. april 2020|archive-url=https://web.archive.org/web/20200425123810/https://www.cnbc.com/2019/11/05/how-jim-simons-founder-of-renaissance-technologies-beats-the-market.html|url-status=live}}</ref><ref name="WSJ2019November2ZuckermanGregory">{{cite news|last1=Zuckerman|first1=Gregory|title=The Making of the World's Greatest Investor|journal=The Wall Street Journal. Eastern Edition|url=https://www.wsj.com/articles/the-making-of-the-worlds-greatest-investor-11572667202|access-date=7. november 2019|agency=Dow Jones & Company Inc|issue=Hedge Funds|date=2. november 2019|location=United States|language=en|url-access=subscription|issn=0099-9660|archive-date=6. november 2019|archive-url=https://web.archive.org/web/20191106164135/https://www.wsj.com/articles/the-making-of-the-worlds-greatest-investor-11572667202|url-status=live}}</ref>
Levende_personer Erhvervsliv Matematik