Sectors are the broadest groups and number 17 in total. Sectors appear in the weekly Industry Rank Analysis. They can also be incorporated into a stock screen via either Research Wizard or the Custom Screener.

Medium (M) industry groups are somewhat smaller in size and number approximately 60 in total. Combining related medium groups creates a sector. Medium groups can be incorporated into a stock screen via Research Wizard. Medium industry groups are also used for categorizing Zacks Equity Research reports by industry.

Expanded (X) industry groups are the smallest in size and number over 200 in total. Combining expanded groups can create either a medium group or an entire sector. Expanded industry groups are used in the Zacks Industry Rank and Average Broker Recommendation. In addition, these groups can be incorporated into a stock screen via either Research Wizard or the Custom Screener.

The table below shows the mapping of sectors to medium industry groups to expanded industry groups. The codes represent the numerical identifiers for each sector and group.

Sector and Industry Group Classifications
Sector Group	Sector Code	Medium(M) Industry Group	Medium(M) Industry Code	Expanded(X) Industry Group	Expanded(X) Industry Code
Aerospace	11	AEROSPACE/DEFENSE	38	AEROSP/DEF EQ	3
Aerospace	11	AEROSPACE/DEFENSE	38	AEROSPACE/DEFENSE	2
Aerospace	11	AEROSPACE/DEFENSE	38	ELEC-MILITARY	55
Auto/Tires/Trucks	5	AUTOS/TIRES/TRUCKS	18	AUTO-DOMESTIC	7
Auto/Tires/Trucks	5	AUTOS/TIRES/TRUCKS	18	AUTO-FOREIGN	8
Auto/Tires/Trucks	5	AUTOS/TIRES/TRUCKS	18	AUTO/TRUCK-ORIG	10
Auto/Tires/Trucks	5	AUTOS/TIRES/TRUCKS	18	AUTO/TRUCK-REPL	11
Auto/Tires/Trucks	5	AUTOS/TIRES/TRUCKS	18	ENGINES-INT CMB	58
Auto/Tires/Trucks	5	AUTOS/TIRES/TRUCKS	18	RUBBER-TIRES	171
Basic Materials	6	CHEM & FERT	19	CHEM-DIVERSIFD	34
Basic Materials	6	CHEM & FERT	19	CHEM-FIBERS	35
Basic Materials	6	CHEM & FERT	19	CHEM-PLASTICS	36
Basic Materials	6	CHEM & FERT	19	CHEM-SPECIALTY	37
Basic Materials	6	CHEM & FERT	19	FERTILIZERS	59
Basic Materials	6	METALS-NON FERR	20	METAL PRD-DISTR	120
Basic Materials	6	METALS-NON FERR	20	METAL PRD-FSTRS	121
Basic Materials	6	METALS-NON FERR	20	METAL PROC&FABR	119
Basic Materials	6	METALS-NON FERR	20	MINING-GOLD	114
Basic Materials	6	METALS-NON FERR	20	MINING-MISC	116
Basic Materials	6	METALS-NON FERR	20	MINING-NON FERR	117
Basic Materials	6	METALS-NON FERR	20	MINING-SILVER	118
Basic Materials	6	PAPER	22	PAPER &REL PRDS	140
Basic Materials	6	PAPER	22	PAPER-BUS FORMS	141
Basic Materials	6	STEEL	21	MINING-IRON	115
Basic Materials	6	STEEL	21	STEEL-PIPE&TUBE	175
Basic Materials	6	STEEL	21	STEEL-PRODUCERS	176
Basic Materials	6	STEEL	21	STEEL-SPECIALTY	177
Business Services	16	BUSINESS SERVICES	59	BUSINESS INFO SVC	206
Business Services	16	BUSINESS SERVICES	59	BUSINESS SVCS	205
Computer and Technology	10	COMPUTER SOFT/SERV	32	COMP-SERVICES	43
Computer and Technology	10	COMPUTER SOFT/SERV	32	COMP-SOFTWARE	44
Computer and Technology	10	COMPUTER SOFT/SERV	32	INTERNET CONTENT	212
Computer and Technology	10	COMPUTER SOFT/SERV	32	INTERNET SERVICES	213
Computer and Technology	10	COMPUTER SOFT/SERV	32	INTERNET SOFTWARE	214
Computer and Technology	10	COMPUTER/OFFICE EQUIP	31	COMP-GRAPHICS	39
Computer and Technology	10	COMPUTER/OFFICE EQUIP	31	COMP-INTEGT SYS	203
Computer and Technology	10	COMPUTER/OFFICE EQUIP	31	COMP-MAINFRAME	40
Computer and Technology	10	COMPUTER/OFFICE EQUIP	31	COMP-MICRO	41
Computer and Technology	10	COMPUTER/OFFICE EQUIP	31	COMP-MINI	199
Computer and Technology	10	COMPUTER/OFFICE EQUIP	31	COMP-NETWORKS	198
Computer and Technology	10	COMPUTER/OFFICE EQUIP	31	COMP-OPTICL REC	138
Computer and Technology	10	COMPUTER/OFFICE EQUIP	31	COMP-PERIPH EQP	42
Computer and Technology	10	COMPUTER/OFFICE EQUIP	31	COMP-STORAGE DE	202
Computer and Technology	10	COMPUTER/OFFICE EQUIP	31	OFFICE AUTO&EQP	124
Computer and Technology	10	ELECTRONICS	34	ELEC MSRNG INST	51
Computer and Technology	10	ELECTRONICS	34	ELEC PARTS DIST	54
Computer and Technology	10	ELECTRONICS	34	ELEC PRODS-MISC	52
Computer and Technology	10	ELECTRONICS	34	ELEC-CONNECTORS	53
Computer and Technology	10	ELECTRONICS	34	ELEC-MISC COMPN	50
Computer and Technology	10	ELECTRON-SEMI	33	ELEC COMP-SEMIC	49
Computer and Technology	10	MISC TECHNOLOGY	35	ELEC-MANUFT MACH	209
Computer and Technology	10	MISC TECHNOLOGY	35	FIBER OPTICS	60
Computer and Technology	10	MISC TECHNOLOGY	35	INDL AUTO/RBTCS	82
Computer and Technology	10	MISC TECHNOLOGY	35	INSTRU-CONTROL	83
Computer and Technology	10	MISC TECHNOLOGY	35	INSTRU-SCIENTFC	84
Computer and Technology	10	MISC TECHNOLOGY	35	LASERS-SYS/COMP	90
Computer and Technology	10	TELECOMM EQUIP	36	TELECOMM EQUIP	179
Computer and Technology	10	TELECOMM SVCS	37	TELECOMM SVCS	178
Computer and Technology	10	TELECOMM SVCS	37	TELECOMM-WIRELESS	201
Construction	8	BUILDING PRODS	28	BLDG PRD-AIR/HT	22
Construction	8	BUILDING PRODS	28	BLDG PRD-DRS&TR	23
Construction	8	BUILDING PRODS	28	BLDG PRD-LTG FX	24
Construction	8	BUILDING PRODS	28	BLDG PRD-WOOD	26
Construction	8	BUILDING PRODS	28	BLDG&CONST-MISC	21
Construction	8	BUILDING PRODS	28	BLDG-CMT/CNT/AG	27
Construction	8	BUILDING PRODS	28	PAINTS&REL PRDS	139
Construction	8	CONSTRUCT/BLDG SERV	29	BLDG-HEAVY CNST	28
Construction	8	CONSTRUCT/BLDG SERV	29	BLDG-MAINT & SV	29
Construction	8	CONSTRUCT/BLDG SERV	29	BLDG-MBL/MFG&RV	30
Construction	8	CONSTRUCT/BLDG SERV	29	BLDG-RSDNT/COMR	31
Consumer Discretionary	2	HM FURN/APPLI	8	APPLIANCE-HSHLD	5
Consumer Discretionary	2	HM FURN/APPLI	8	AUDIO/VIDEO PRD	6
Consumer Discretionary	2	HM FURN/APPLI	8	FURNITURE	79
Consumer Discretionary	2	HM FURN/APPLI	8	TEXTILE-HME FRN	181
Consumer Discretionary	2	LEISURE SERVICES	9	HOTELS & MOTELS	81
Consumer Discretionary	2	LEISURE SERVICES	9	LEISURE&REC SVS	92
Consumer Discretionary	2	LEISURE SERVICES	9	LEISURE&REC/GMG	200
Consumer Discretionary	2	MEDIA	10	BRDCST-RADIO/TV	32
Consumer Discretionary	2	MEDIA	10	CABLE TV	33
Consumer Discretionary	2	MEDIA	10	MEDIA CONGLOM	208
Consumer Discretionary	2	MEDIA	10	MOVIE/TV PRD&DIST	122
Consumer Discretionary	2	OTHER CONS DISC	12	ADVERTISING	1
Consumer Discretionary	2	OTHER CONS DISC	12	CONSM PD-MISC DIS	123
Consumer Discretionary	2	OTHER CONS DISC	12	LEISURE&REC PRD	91
Consumer Discretionary	2	OTHER CONS DISC	12	PREC MTLS/JWLRY	144
Consumer Discretionary	2	OTHER CONS DISC	12	SCHOOLS	172
Consumer Discretionary	2	OTHER CONS DISC	12	TOOLS-HAND HELD	184
Consumer Discretionary	2	OTHER CONS DISC	12	TOYS/GAME/HOBBY	185
Consumer Discretionary	2	PHOTO EQP &SUPP	11	PHOTO EQP &SUPP	142
Consumer Staples	1	APPAREL	1	SHOES&REL APPRL	173
Consumer Staples	1	APPAREL	1	TEXTILE-APPAREL	180
Consumer Staples	1	BEVERAGES	2	BEVERAGES-ALCOH	19
Consumer Staples	1	BEVERAGES	2	BEVERAGES-SOFT	20
Consumer Staples	1	CON PRD-MISC STAPLES	7	CONS PD- MISC STPL	207
Consumer Staples	1	CON PRD-MISC STAPLES	7	FUNERAL SVS&REL	78
Consumer Staples	1	FOOD	3	AGRICULTURE OPERATIONS	4
Consumer Staples	1	FOOD	3	FOOD-CANNED	71
Consumer Staples	1	FOOD	3	FOOD-CONFECTNRY	72
Consumer Staples	1	FOOD	3	FOOD-DAIRY PRDS	73
Consumer Staples	1	FOOD	3	FOOD-FLOUR&GRN	74
Consumer Staples	1	FOOD	3	FOOD-MEAT PRODS	75
Consumer Staples	1	FOOD	3	FOOD-MISC/DIVERS	76
Consumer Staples	1	FOOD	3	FOOD-SUGAR&REFG	77
Consumer Staples	1	PUBLISHING	4	PUBLSHG-BOOKS	147
Consumer Staples	1	PUBLISHING	4	PUBLSHG-NEWSPRS	148
Consumer Staples	1	PUBLISHING	4	PUBLSHG-PRDCALS	149
Consumer Staples	1	SOAPS/COSMETICS	5	COSMETICS&TLTRS	47
Consumer Staples	1	SOAPS/COSMETICS	5	SOAP&CLNG PREPS	174
Consumer Staples	1	TOBACCO	6	TOBACCO	183
Finance	13	BANKS & THRIFTS	47	BANKS-MIDWEST	13
Finance	13	BANKS & THRIFTS	47	BANKS-NORTHEAST	15
Finance	13	BANKS & THRIFTS	47	BANKS-SOUTHEAST	16
Finance	13	BANKS & THRIFTS	47	BANKS-SOUTHWEST	17
Finance	13	BANKS & THRIFTS	47	BANKS-WEST	18
Finance	13	BANKS & THRIFTS	47	FIN-SVGS & LOAN	67
Finance	13	BANKS-MAJOR	46	BANKS-FOREIGN	12
Finance	13	BANKS-MAJOR	46	BANKS-MJR REGNL	204
Finance	13	BANKS-MAJOR	46	BANKS-MONEY CTR	14
Finance	13	FINANCE	48	FIN-CONS LOANS	61
Finance	13	FINANCE	48	FIN-LEASING COS	64
Finance	13	FINANCE	48	FIN-MISC SVCS	69
Finance	13	FINANCE	48	FIN-MTG&REL SVS	65
Finance	13	FINANCE	48	FIN-SBIC&COMMRL	68
Finance	13	INSURANCE	49	INS-ACC & HLTH	85
Finance	13	INSURANCE	49	INS-BROKERS	86
Finance	13	INSURANCE	49	INS-LIFE	87
Finance	13	INSURANCE	49	INS-MULTI LINE	88
Finance	13	INSURANCE	49	INS-PROP&CASLTY	89
Finance	13	INVEST BKRS/MGMT	50	FIN-INVEST BKRS	62
Finance	13	INVEST BKRS/MGMT	50	FIN-INVEST MGMT	63
Finance	13	INVESTMENT FUNDS	51	FIN-INVEST FUND	66
Finance	13	REAL ESTATE	52	REAL ESTATE DEV	152
Finance	13	REAL ESTATE	52	REAL ESTATE OPS	153
Finance	13	REAL ESTATE	52	REIT-EQTY TRUST	150
Finance	13	REAL ESTATE	52	REIT-MTGE TRUST	151
Index	0	INDICES	0	INDICES	400
Industrial Products	7	CONTNRS & GLASS	23	CONTNRS-MTL/GLS	45
Industrial Products	7	CONTNRS & GLASS	23	CONTNRS-PPR/PLS	46
Industrial Products	7	CONTNRS & GLASS	23	GLASS PRODUCTS	80
Industrial Products	7	IND PRODS/SVC	24	ENGINRG/R&D SVS	57
Industrial Products	7	IND PRODS/SVC	24	LINEN SPLY &REL	93
Industrial Products	7	IND PRODS/SVC	24	OFFICE SPPL&FRM	125
Industrial Products	7	IND PRODS/SVC	24	PRINTING-COMMRL	145
Industrial Products	7	IND PRODS/SVC	24	PROTECTION-SFTY	146
Industrial Products	7	IND PRODS/SVC	24	RUBBER&PLASTICS	170
Industrial Products	7	IND PRODS/SVC	24	TEXTILE-PRDUCTS	182
Industrial Products	7	IND PRODS/SVC	24	WIRE&CABLE PRDS	197
Industrial Products	7	MACHINERY	26	MACH TLS&RL PRD	94
Industrial Products	7	MACHINERY	26	MACH-CONST/MNG	95
Industrial Products	7	MACHINERY	26	MACH-FARM	98
Industrial Products	7	MACHINERY	26	MACH-GENL INDL	99
Industrial Products	7	MACHINERY	26	MACH-MATL HDLG	100
Industrial Products	7	MACHINERY	26	MACH-PRINT TRAD	101
Industrial Products	7	MACHINERY	26	MACH-THRML PROC	102
Industrial Products	7	MACHINERY-ELEC	25	MACH-ELEC UTILS	96
Industrial Products	7	MACHINERY-ELEC	25	MACH-ELECTRICAL	97
Industrial Products	7	POLLUTION CNTRL	27	POLLUTION CNTRL	143
Medical	4	DRUGS	15	MED-BIOMED/GENE	105
Medical	4	DRUGS	15	MED-DRUGS	106
Medical	4	DRUGS	15	MED-GENERIC DRG	107
Medical	4	MED PRODS	17	MED INSTRUMENTS	103
Medical	4	MED PRODS	17	MED PRODUCTS	104
Medical	4	MED PRODS	17	MED/DENTAL-SUPP	113
Medical	4	MEDICAL CARE	16	MED-HMO	108
Medical	4	MEDICAL CARE	16	MED-HOSPITALS	109
Medical	4	MEDICAL CARE	16	MED-NURSING HMS	110
Medical	4	MEDICAL CARE	16	MED-OUTP/HM CRE	111
Medical	4	MEDICAL PRODUCTS	17	MEDICAL INFO SYSTEMS	215
Multi-Sector Conglomerates	9	CONGLOMERATES	30	DIVERSIFIED OPS	48
Oils/Energy	12	COAL	39	COAL	38
Oils/Energy	12	ENERGY-ALT SRCS	40	ENERGY-ALT SRCS	56
Oils/Energy	12	OIL MACH/SVC/DRILL	41	OIL FLD MCH&EQP	127
Oils/Energy	12	OIL MACH/SVC/DRILL	41	OIL&GAS-DRILL	134
Oils/Energy	12	OIL MACH/SVC/DRILL	41	OIL-FIELD SVCS	131
Oils/Energy	12	OIL/GAS PROD/PIPEL	45	OIL-PROD/PIPELN	135
Oils/Energy	12	OIL-EXP&PROD	42	OIL-C$ EXP&PROD	129
Oils/Energy	12	OIL-EXP&PROD	42	OIL-US EXP&PROD	136
Oils/Energy	12	OIL-EXP&PROD	42	OIL-US RYLTY TR	126
Oils/Energy	12	OIL-INTEGRATED	44	OIL-C$ INTEGRTD	130
Oils/Energy	12	OIL-INTEGRATED	44	OIL-INTL INTGD	132
Oils/Energy	12	OIL-INTEGRATED	44	OIL-US INTEGRTD	137
Oils/Energy	12	OIL-MISC	43	OIL REFING&MKTG	128
Oils/Energy	12	OIL-MISC	43	OIL-INTL SPCLTY	133
Retail/Wholesale	3	FOOD/DRUG-RTL/WHL	13	FOOD ITEMS-WHLE	70
Retail/Wholesale	3	FOOD/DRUG-RTL/WHL	13	MED-WHSL DRG/SN	112
Retail/Wholesale	3	FOOD/DRUG-RTL/WHL	13	RETAIL-DRUG STR	159
Retail/Wholesale	3	FOOD/DRUG-RTL/WHL	13	RETAIL-RESTRNTS	160
Retail/Wholesale	3	FOOD/DRUG-RTL/WHL	13	RETAIL-SUPERMKT	167
Retail/Wholesale	3	FOOD/DRUG-RTL/WHL	13	RETAIL-VENDING	168
Retail/Wholesale	3	NONFOOD RETAIL/WH	14	BLDG PRD-RT/WHL	25
Retail/Wholesale	3	NONFOOD RETAIL/WH	14	ELECTRONIC COMMERCE	211
Retail/Wholesale	3	NONFOOD RETAIL/WH	14	RET/WHL-AUTO PT	9
Retail/Wholesale	3	NONFOOD RETAIL/WH	14	RET/WHLSL AUTO/TRUCK	210
Retail/Wholesale	3	NONFOOD RETAIL/WH	14	RETAIL/WHSL CMP	169
Retail/Wholesale	3	NONFOOD RETAIL/WH	14	RETAIL-APP/SHOE	154
Retail/Wholesale	3	NONFOOD RETAIL/WH	14	RETAIL-CATLG SH	155
Retail/Wholesale	3	NONFOOD RETAIL/WH	14	RETAIL-CNV STRS	157
Retail/Wholesale	3	NONFOOD RETAIL/WH	14	RETAIL-CONS ELC	156
Retail/Wholesale	3	NONFOOD RETAIL/WH	14	RETAIL-DISCOUNT	158
Retail/Wholesale	3	NONFOOD RETAIL/WH	14	RETAIL-HOME FRN	161
Retail/Wholesale	3	NONFOOD RETAIL/WH	14	RETAIL-JEWELRY	162
Retail/Wholesale	3	NONFOOD RETAIL/WH	14	RETAIL-MAIL ORD	163
Retail/Wholesale	3	NONFOOD RETAIL/WH	14	RETAIL-MISC/DIV	165
Retail/Wholesale	3	NONFOOD RETAIL/WH	14	RETAIL-MJR DEPT	164
Retail/Wholesale	3	NONFOOD RETAIL/WH	14	RETAIL-RGN DEPT	166
Transportation	15	TRANSPORT-AIR	57	TRANS-AIR FRGHT	186
Transportation	15	TRANSPORT-AIR	57	TRANS-AIRLINE	187
Transportation	15	TRANSPORTATION	58	TRANS-EQP&LSNG	188
Transportation	15	TRANSPORTATION	58	TRANS-RAIL	189
Transportation	15	TRANSPORTATION	58	TRANS-SERVICES	191
Transportation	15	TRANSPORTATION	58	TRANS-SHIP	190
Transportation	15	TRANSPORTATION	58	TRANS-TRUCK	192
Unclassified	17	UNCLASSIFIED	70	UNCLASSIFIED	500
Utilities	14	UTIL-ELEC PWR	53	UTIL-ELEC PWR	193
Utilities	14	UTIL-GAS DISTR	54	UTIL-GAS DISTR	194
Utilities	14	UTIL-TELEPHONE	55	UTIL-TELEPHONE	195
Utilities	14	UTIL-WATER SPLY	56	UTIL-WATER SPLY	196