To me this isn’t strange at all, but perfectly sensible. You’re assuming that stock price movements have something to do with the performance of the companies, but the evidence is that for the better part, stock price movements are totally unrelated to the companies. This might be hard to accept, since it is such an ingrained concept that the two are related.

From what I see, stock price movements are overwhelmingly about traders trying to figure out ways to take other trader’s money. I’m not sure what it means if the markets are all trading synchronously, but I assure you it has nothing to do with the companies that the markets represent.