Markets fall as Facebook leads tech sell-off

Markets fell on Monday.

The S&P 500 plunged 1.4 percent, the STOXX Europe 600 fell 1.1 percent and the Nikkei 225 fell 0.9 percent.

Facebook plunged 6.8 percent amid an outcry over third-party access to its users' personal data. That led to a sell-off in other tech stocks as the Nasdaq Composite tumbled 1.8 percent.

In the meantime, Richard Perry, an analyst at Hantec Markets, said in a note: “Fears over trade tariffs and protectionism are never far away, whilst the Federal Reserve may be about to signal that an acceleration in its tightening program could be ahead.”