SNEX ▼ -0.6% - StoneX Group Inc. $SNEX - Launch of StoneX Trading marks a new era for City Index StoneX Group shares declined 0.6% today following the company's announcement of the StoneX Trading launch under the City Index brand. The expansion into a new trading platform represents a strategic move to broaden the company's offerings in the financial services market. 09-SEP-2026 03:00 AM ET