It's anybody's guess when the White House will again tighten its approach on Huawei. 

But for now, the White House has granted a three-month extension to Huawei's ability to purchase chips from U.S. semiconductor manufacturers. Meanwhile, U.S. Secretary of State Mike Pompeo told CNBC Huawei still represents a national security threat to the U.S. Huawei is one of China's largest technology and telecommunications hardware manufacturers. 

In any event, more Huawei sales for U.S. chip makers means upside for four chipmakers in particular. 

Qorvo (QRVO - Get Report) gets roughly 15% of its revenue from Huawei. The stock rose 0.18% in premarket trading Tuesday. Skyworks Solutions (SWKS - Get Report) derives about 15% of its revenue from the Chinese tech giant. Skyworks shares rose 0.27% in the premarket action. Broadcom sees about 4% of its revenue come from Huawei. There was no trading on Broadcom shares. Micron (MU - Get Report) , while it doesn't provide enough information to discern percent of Huawei from to Huawei, gets a considerable chunk of its sales from China's largest smartphone maker. Micron shares were up 0.29% in premarket trading. 

In 2019, the White House has waffled on its stance both on tariffs on Chinese goods coming into the U.S. and its position on Huawei, which, according to Secretary of State Mike Pompeo, is a national security threat. 

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