US stocks just posted their worst first half since 1970, but the slump was all about the price in price-earnings ratios, according to “The Big Short” investor Michael Burry. “Next up, earnings compression,” Burry, the Scion Asset Management founder, wrote Thursday on Twitter. He’s right about corporate profits, but don’t rule out even scantier multiples as well. The S&P 500 Index’s nearly 20% decline this year has been driven, of course, by the surge in interest rates as the Federal Reserve moves to tackle the worst inflation in 40 years, driving up borrowing costs and making stocks somewhat less attractive relative to fixed-income investments.