The S&P 500’s worst week since Christmas makes a grim finale to a May that put a four-month market rally to a halt.

Some $1.7 trillion was yanked from the S&P 500 this month as 10 out of 11 industry groups retreated. It was particularly bad for tech, the index’s biggest sector, which plunged 8.9% in the worst month since 2008.

That translated into a $515 billion drop in market capitalization. Energy stocks, whose market cap is a fraction of tech’s, fell 11.7%, which amounted to a $152 market cap decline.

Between a trade war that now spread out to Mexico, a breakdown in U.S.-China negotiations and a rising concern about growth, that’s of little surprise. The only sector that survived the selloff unscathed was real estate, which gained 0.9% for the month.

Stocks in the Philadelphia Stock Exchange Semiconductor Index lost 16.7% for the month, shedding about $228 billion in market cap.