COMPANIES IN THIS INDUSTRY

ABCC – ABC DISPENSING TECHNOLOGIES INC
ACLS – Axcelis Technologies, Inc.
ACMR – ACM Research, Inc.
ADEP – ADEPT TECHNOLOGY INC
AEHR – Aehr Test Systems
AGAI – AG ASSOCIATES INC
AIXG – AIXTRON SE (Foreign)
AMAT – Applied Materials, Inc.
AMBA – Ambarella, Inc.
ASMIY – ASM INTERNATIONAL N V (Foreign)
ASML – ASML Holding N.V.
ASTX1 – APPLIED SCIENCE & TECHNOLOGY INC
ASYS – Amtech Systems, Inc.
ASYT – ASYST TECHNOLOGIES INC
ATOM – Atomera Incorporated
AXTI – AXT Inc
BRKS – Brooks Automation, Inc.
BTUI – BTU INTERNATIONAL INC
CAMT – Camtek Ltd.
CFMT – CFM TECHNOLOGIES INC
COHU – Cohu, Inc.
CPAK – CPAC INC
CXOT – COMMODORE SEPARATION TECHNOLOGIES INC
CYMI – CYMER INC
DPMI – DUPONT PHOTOMASKS INC
DQ – DAQO New Energy Corp.
DTIIQ – DT INDUSTRIES INC
DTMC – DTM CORP
EGLS – ELECTROGLAS INC
EMAN – eMagin Corporation
ENPH – Enphase Energy, Inc.
ENTG – Entegris, Inc.
ETEC1 – ETEC SYSTEMS INC
EVTN – ENVIRO TECHNOLOGIES, INC.
FARL – FARREL CORP
FSII – FSI INTERNATIONAL INC
GGNS – GENUS INC
GLGI – GREYSTONE LOGISTICS, INC.
GRB – GERBER SCIENTIFIC INC
GSNX – GASONICS INTERNATIONAL CORP
HELX – HELIX TECHNOLOGY CORP
HIRI – HI RISE RECYCLING SYSTEMS INC
ICHR – Ichor Holdings
IMI – Intermolecular, Inc.
ION1 – IONICS INC
IPEC1 – INTEGRATED PROCESS EQUIPMENT CORP
IPGP – IPG Photonics Corporation
IVISF – ICOS VISION SYSTEMS CORP N V (Foreign)
KATY – KATY INDUSTRIES INC
KLAC – KLA-Tencor Corporation
KLIC – Kulicke and Soffa Industries, Inc.
LRCX – Lam Research Corporation
MICN – MICRION CORP
MRSI – MRS TECHNOLOGY INC
MTCH1 – NORTEM, N.V.
MTSN – MATTSON TECHNOLOGY INC
MZIAQ – MILACRON INC
NANO – Nanometrics Incorporated
NVLS1 – NOVELLUS SYSTEMS INC
NVMI – Nova Measuring Instruments Ltd.
OLED – Universal Display Corporation
PKE – Park Electrochemical Corporation
PLAB – Photronics, Inc.
PRIA – PRI AUTOMATION INC
PRTKQ – PROFILE TECHNOLOGIES INC
PTIS – PLASMA THERM INC
QSYS – QUAD SYSTEMS CORP
QUIP – QUIPP INC
RBCN – Rubicon Technology, Inc.
SCON – Superconductor Technologies Inc.
SFAM – SPEEDFAM IPEC INC
SMTL – SEMITOOL INC
SVGI – SILICON VALLEY GROUP INC
TER – Teradyne, Inc.
TRKN – TRIKON TECHNOLOGIES INC
TRT – Trio-Tech International
UCTT – Ultra Clean Holdings, Inc.
UTEK – ULTRATECH INC
VECO – Veeco Instruments Inc.
VSEA – VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES INC
WJ – WJ COMMUNICATIONS INC
WJ1 – WATKINS JOHNSON CO
WJCI – WJ COMMUNICATIONS INC
XCRA – Xcerra Corporation
XPER – Xperi Corporation
YILD – YIELDUP INTERNATIONAL CORP