<?xml version="1.0" encoding="utf-8"?><feed xmlns="http://www.w3.org/2005/Atom" ><generator uri="https://jekyllrb.com/" version="3.10.0">Jekyll</generator><link href="https://jgatheral.github.io/feed.xml" rel="self" type="application/atom+xml" /><link href="https://jgatheral.github.io/" rel="alternate" type="text/html" /><updated>2026-02-25T19:06:49+00:00</updated><id>https://jgatheral.github.io/feed.xml</id><title type="html">Jim Gatheral</title><subtitle>Presidential Professor of Mathematics at Baruch College. Research in rough volatility, stochastic volatility, volatility surface modeling, and market microstructure.</subtitle></feed>