Market Tests Investors’ Nerves as Stocks Sell Off After Auction

Investors dumped US stocks Wednesday afternoon following a disappointing Treasury auction that sent bond yields surging past levels seen during April’s market rout.

The S&P 500 Index slid 1.6%, while the technology-heavy Nasdaq 100 Index declined 1.3%. US equities had been holding up earlier in the session on the strength of Big Tech, despite fresh signs American consumers have started curbing some purchases. The rise in Treasury yields following the troubling 20-year auction added to the angst, as the 30-year rate soared above 5%. The Cboe Volatility Index, or VIX, also crossed 20.

“The 30-year T-Bond yield is within 10 basis points of hitting its highest level since 2007,” said Michael O’Rourke, chief market strategist at JonesTrading. “If the world’s safest assets are acting this poorly, then equities are due for a correction.”

Unprofitable companies, which tend to have the most debt, got smoked, with shares of profitless technology firms in free fall and a Goldman Sachs Group Inc. basket of the most-shorted stocks tumbling 4.1%. Wall Street pros said Treaury yields are reaching levels where it’s difficult for the recent stock market rally to hold.

“The move in the 10-year yield meaningfully above 4.5% is something that confirms a key change in long-term yields,” said Matt Maley at Miller + Tabak. The moves across the bond market “make it much tougher to justify today’s very high valuation levels, so, it’s something that will likely create some renewed headwinds for stocks.”