Major U.S. stock indexes soared more than 5% during midday trading, a show of investor optimism regarding the stabilization of COVID-19.

The S&P 500, the Dow Jones Industrial Average and the Nasdaq increased about 5.6% apiece to 2,627.32, 22,246.81 and 7,783.55 respectively.

About 25 Orange County-based companies today rose more than 10%. The Business Journal daily tracks about 65 OC companies trading on Wall Street.

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The yield on a 10-year Treasury bond jumped 13% to 0.66%.

The price of gold ticked 2.7% higher to $1,690.

The price of oil dropped 6% to $26.62 a barrel.

TECHNOLOGY

Costa Mesa-based Veritone Inc. (Nasdaq: VERI) jumped 30% to $2.89 and a $76 million market cap. Shares in the artificial intelligence tech provider are trading at about four times their average volume.

REAL ESTATE

Aliso Viejo-based New Home Co. Inc. (NYSE: NWHM) rose 32% to $1.53 and a $31 million market cap. It was the largest percentage increase of all Orange County homebuilders, and among its biggest competitors. Shares are up 63% from a 52-week low of 94 cents reached on March 23.