What are some realistic alternatives to US markets here? Selling is one thing, the question is what to buy instead? I mean, everyone starting to buy european instead would be great for stock prices, but it wouldn't make the underlying assets more valuable, right?
Sovereign debt of a more politically stable nation state or other monetary union, if you are investing at these levels. If you're an individual, you have more options, although there will be fierce debate about the risk profile (as US Treasuries were historically considered to be risk free). https://www.bogleheads.org/forum/viewtopic.php?t=449401
The master turned to the disciple and said: "A better thing"
The disciple was enlightened.
EDIT: Oh damn it. The entirety of the comment was "Sovereign debt of a more politically stable nation state or other monetary union" at the time I replied. Ah well.