Chip bonds surged Thursday after 4 companies kick researcher expectations on earnings. Of a 30 chip bonds on a PHLX Semiconductor Index, usually Qualcomm was trade in a negative.

Xilinx, Teradyne and Lam Research all reported gain and income that kick investors’ expectations in their reports Wednesday. The 3 bonds led a index on Thursday, with Xilinx, that creates programmable chips for information centers, adult as most as 18 percent, and Teradyne and Lam Research, that make apparatus that manufactures semiconductors, any adult as most as 15 percent. Calculator manufacturer Texas Instruments also kick on gain Wednesday and rose as most as 7 percent a subsequent day, notwithstanding blank on revenue.

The index altogether was adult scarcely 6 percent Thursday compared to a reduction than half a percent cocktail in a tech-heavy Nasdaq Composite Index. As of Thursday afternoon, it was a seventh-best day for a index in a past 10 years.

Xilinx, that creates chip record for a accumulation of industries including communications and aerospace, pronounced it has benefited from a tellurian pull toward next-generation mobile networks. On a gain call Wednesday, Xilinx CEO Victor Peng pronounced that within wireless, “the clever expansion was essentially driven by 5G deployments in South Korea and a really early start of a ramp of 5G deployments in China.”

For Lam, “strong gain were driven by better-than-expected margins,” wrote Romit Shah, an researcher during Instinet, in a note after a report. Shah has a “buy” rating on a batch and pronounced a company’s sum domain of 46.3 percent surfaced Instinet’s 46 percent estimate.

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Watch: How Qualcomm became a chip hulk and because a business indication is being challenged by Apple and a FTC