Had that event shown a job decrease, markets may easily have turned positive right from there. That didn't happen. The report was stronger than expected and futures prices promptly fell to session lows. And the markets never looked up from there. As goes the SOX, so follows the Nasdaq.
Chips are the proxy leader until another sector emerges from here.
Fiber-optics once had such promise but not these days. This picture is mixed to bearish. A break below the 570 level will retest recent lows or make new ones post-haste. Same for the Dow. If it doesn't close above Friday's lows on Monday, a retest of 10,300 is all but guaranteed.