Jane Street Group will continue to contest the regulator’s order but has put its options trading on hold for now.

When does arbitrage edge into illegality? The line between arbitrage and market manipulation has long been one of the greyest areas in financial markets.

Jane's Addiction made waves after an onstage brawl. Now, members of the Los Angeles alt-rock collective are suing each other.

The request by Jane Street to revoke certain restrictions, including restraining them from the domestic capital markets, ...