The PHLX Semiconductor Sector (SOX) is a Philadelphia Stock Exchange capitalization-weighted index composed of the 30 largest U.S. companies primarily involved in the design, distribution, manufacture, and sale of semiconductors. It was created in 1993 by the Philadelphia Stock Exchange.

The Index contains the following 30 companies as updated on January 20, 2023:

• Advanced Micro Devices, Inc., AMD
• Analog Devices, Inc., ADI
• Applied Materials, Inc., AMAT
• ASML Holding N.V., ASML
• Azenta, Inc., AZTA
• Broadcom Inc., AVGO
• Coherent Corp., COHR
• Entegris, Inc., ENTG
• GLOBALFOUNDRIES Inc., GFS
• Intel Corporation, INTC
• IPG Photonics Corporation, IPGP
• KLA Corporation, KLAC
• Lam Research Corporation, LRCX
• Lattice Semiconductor Corporation, LSCC
• Marvell Technology, Inc., MRVL
• Microchip Technology Incorporated, MCHP
• Micron Technology, Inc., MU
• Monolithic Power Systems, Inc., MPWR
• Novanta Inc., NOVT
• NVIDIA Corporation, NVDA
• NXP Semiconductors N.V., NXPI
• ON Semiconductor Corporation, ON
• Qorvo, Inc., QRVO
• QUALCOMM Incorporated, QCOM
• Skyworks Solutions, Inc., SWKS
• Synaptics Incorporated, SYNA
• Taiwan Semiconductor Manufacturing Company Limited, TSM
• Teradyne, Inc., TER
• Texas Instruments Incorporated, TXN
• Wolfspeed, Inc., WOLF

History

The index was set to an initial value of 200 on December 1, 1993 and was split two-for-one on July 24, 1995; options commenced trading on September 7, 1994.