Proceeds go to charities for Afghanistan refugees, U.S. military veterans and Haitian earthquake relief.
Security Traders Association of Chicago Fund helps with college financial scholarships.
Since it began, ICAP Charity Day has raised over £150m.
More than 35 exchanges are holding a virtual bell ringing or workshop during World Investor Week.
The scheme is designed to support women and underrepresented minorities to grow and sustain their businesses.
Since its founding 127 years ago, HFLS has provided over $350 mln to more than 875,000 borrowers.
The firm will donate net commissions from trading today in memory of Peg Broadbent.
Partners of Citadel and Citadel Securities give £3m to two London medical institutions.
Funds will go to charities working to support vulnerable people impacted by COVID-19.