Chip maker Qualcomm Inc. QCOM, -2.17% said Friday it has extended its cash tender offer for NXP Semiconductors N.V. to 5.00 p.m. Eastern Time on April 2. The company is offering to buy NXP in a deal valued at about $44 billion. Qualcomm said so far, shareholders representing 15.1% of outstanding NXP shares have validly tendered them. Qualcomm itself was the subject of an unsolicited bid from Broadcom Inc. AVGO, -0.99% until President Donald Trump blocked the Singapore company earlier this month. Qualcomm shares were down 0.5% in premarket trade, while NXP was up 1.9%. S&P 500 ESM8, +0.17% futures were down 0.2%.