If the outage stretches well into European hours, expect people to get more concerned especially those looking to square their month-end books.
A month that brought fears over AI bubble to the fore is coming to an end with investors shrugging off those worries for now, choosing instead to get excited about the prospect of an interest rate cut from the Federal Reserve next month.
That has left stocks generally upbeat this week although still on course for a monthly decline, while the U.S. dollar is headed for its worst week in four months as markets convince themselves that a rate cut is coming.
With the U.S. markets closed for the Thanksgiving holiday on Thursday and set for a short trading session on Friday, investors are unlikely to place major bets (an outage may help with that too).
The economic calendar includes inflation data for France and Germany and traders will be interested in seeing where prices are headed but for now markets are focused on what the Fed is going to do next.
Traders have priced in an 85% chance of a cut in December, compared with 39% a week earlier, CME FedWatch showed. Now the pricing has switched because of the dovish tone from some of the policymakers. Who's to say it won't change if hawks come out?