03
Jan
Starting today (Jan. 3), Europe’s traders will have to contend with thousands of pages of new rules that will radically change transactions in everything from bonds to stocks to commodities. The sweeping overhaul won’t be obvious for millions of people who don’t work in the industry, at first. But under the surface it will affect everyone.
The regulations are supposed to make European financial markets fairer, more competitive, and less likely to collapse into a crisis. But over time, the rules known...