Might I run an idea by you guys;
It seems that flash crashes has become a part of today's algo-run markets. The
fat fingered flash crash in the nordics a while a go, being the latest example. (it took the Swedish equity index OMX down 8%, and the move rippled out to all stock markets with an abaiting effect (Norwegian index was down 4,8%.)). The index recovered within minutes.
Since we already have servers running, and also have live data subscriptions, it wouldn't be much of an extra cost to have an algo looking for, and potentially exploiting, a flash crash.
A huge drop in a matter of minutes has only been caused by algos has it not? Black monday might be the exception (20% intraday drop).
I will admit that I added Michael A. Gayed to one of my twitter lists a short while ago. The guy is manic and I have no taste for his theory of "the end of the world is a bull case", as it is not laid out with any other other argument than - the bond market is in a state that cannot be sustained (or something to that extent - it's very vague).
I removed him from my list because his constant tweeting was basically spamming down myfeed, but the damage might already be done, because; he gave an anecdote about an experienced trader going all in during the bay of pigs debacle. His reasoning was if there is an nuclear money will not matter much anyway.
So I am left wondering; what other events could cause huge moves of 8% in a matter of 2 minutes, that was not really devastating in a way that my other investments haven't been severely impaired. I would not like to end up owing money, but loosing a bit more when you've already lost a metric ton doesn't matter that much does it.