The S&P 500 was up 0.2% in midday trading to 2,183.46.

The Dow Jones Industrial Average was up 0.2% to 18,519.70.

The NASDAQ was up 0.3% to 5,267.50.

The yield on a 10-year Treasury bond was down 3.3% to 1.54%.

The price of gold was up 2.1% to $1,354.

MANUFACTURING

Foothill Ranch-based Kaiser Aluminum Corp. was up 4% to $88.80 and a $1.6 billion market cap on high volume. The metals maker had traded shares by midday at twice its average volume.

RETAIL

Irvine-based Tilly’s Inc. was up 5.3% to $9.55 and a $272 million market cap on high volume. The youth fashion retailer had by midday traded shares at about 4 times its average volume.

HEALTHCARE

Tustin-based Peregrine Pharmaceuticals Inc. was up 12% to 42 cents and a $101 million market cap. The cancer drug developer said a non-profit cancer research group had award three grants to investigators for studies that will involve Peregrine’s flagship bavituximab.