Stocks of companies doing significant business with Huawei fell Monday.
Shares are falling in reaction to Trump administration efforts to prevent companies from doing business with the Chinese telecom giant.
Among notable Huawei-related stocks, three rose while fifteen fell.
II-VI shares (iiVI) rose 51 cents, or 1.56%, to $33.18.
Finisar shares (FNSR) rose 4.5 cents, or 0.21%, to $21.61.