Can you just trade in hundreds of millions of dollars willy nilly like that? Don't they have access controls in place and tighter regulation? I have seen even c

Can you just trade in hundreds of millions of dollars willy nilly like that? Don't they have access controls in place and tighter regulation? I have seen even crappy mid-sized corps require hardware dongles, physically being on the corporate network and restricting remote access by time frames. Looks like the markets are a trojan horse away from being taken for a ride, if they're not already.