Chip stocks sink in morning trading. Direxion Daily Semiconductors Bull 3x Shares fell 12%; Arm, Marvell Technology, Western Digital, and STMicroelectronics NV fell 6%; Intel, SanDisk, and Super Micro Computer fell 5%; AMD, Micron, and Seagate fell 4%; Broadcom, ASML, TSMC, and Qualcomm fell 3%; Nvidia fell 2%.