SAN FRANCISCO (AP) ― Yahoo is prospering from its lucrative investments in Asia while the Internet company’s listless advertising sales are picking up, if ever so slightly, under CEO Marissa Mayer.

The positive signs in the Yahoo’s first-quarter report overshadowed a 20 percent decline in the company’s earnings during the opening three months of the year.

Yahoo’s stock gained $2.19, or 6.4 percent, to $36.40 in Tuesday’s extended trading. Even if the shares rally similarly in Wednesday’s regular trading, the stock will remain below its 52-week high of $41.72 reached in early January.

The results released Tuesday highlight the contrasting performances of Yahoo’s investment portfolio and the company’s main business of running ad-supported online services.

Yahoo Inc. is making most of its money from its holdings in two Asian Internet companies ― China’s Alibaba Group and Yahoo Japan.

Also, Intel’s earnings fell in the first three months of the year amid a continued slump in the worldwide PC market, but revenue grew slightly because of solid demand for tablet processors and its data center services.

Intel Corp. is the world’s largest maker of microprocessors, which act as the “brains” of computers. Intel has historically been strong in selling chips for personal computers, but that business is declining as people buy smartphones and tablets instead. Intel has been slow to respond to that shift with lower-energy chips that mobile devices demand.

Intel has been working to change that. Besides coming out with mobile-friendly chips, Intel is also expanding into new technologies such as wearable devices and everyday appliances. It bought a maker of fitness trackers, Basis Science, this year.

Intel Corp. said Tuesday that it earned $1.95 billion, or 38 cents per share, in the January-March quarter.