Of course they did. I trade in China myself, and I'm a 'retail' investor (thankfully I got my money out awhile back, the valuations got silly so I just took pr

Of course they did. I trade in China myself, and I'm a 'retail' investor (thankfully I got my money out awhile back, the valuations got silly so I just took profits). Every major bank from every country has a trading presence in Hong Kong at the very least, and many trade in Shanghai too. If it makes you feel better, the smart money is already out, that's what triggered the crash in the first place. Now everyone who took out margin is trying to get out, and eventually the market will level out. Probably much sooner than people expect.