S&P Midcap 400 Index (MID) Companies by Market Cap

The S&P Midcap 400 Index (MID) tracks 401 constituent companies with a combined market cap of $3.35 Trillion, covering the largest publicly traded companies in USA. This ranking lists all MID index holdings ordered by market capitalization — from the largest index heavyweights to smaller constituents. Updated daily with live market data.

Total Market Cap (USD)

$3.35 Trillion

Constituent Companies

401

Index Country

USA
Rank Company Weight (%) Market Cap (USD) Sector Industry Price 24h Change
1 Coherent Inc
NYSE:COHR 		0.34% $53.28 Billion Technology Scientific & Technical Instruments $335.26 +5.03%
2 Comfort Systems USA Inc
NYSE:FIX 		0.48% $47.20 Billion Industrials Engineering & Construction $1952.37 +0.53%
3 Ciena Corp
NYSE:CIEN 		0.33% $45.06 Billion Technology Communication Equipment $548.11 +1.74%
4 Lumentum Holdings Inc
NASDAQ:LITE 		0.15% $40.18 Billion Technology Communication Equipment $903.80 +1.26%
5 Interactive Brokers Group Inc
NASDAQ:IBKR 		0.71% $37.62 Billion Financial Services Capital Markets $84.42 +0.85%
6 EMCOR Group Inc
NYSE:EME 		0.69% $35.85 Billion Industrials Engineering & Construction $921.64 -0.26%
7 Caseys General Stores Inc
NASDAQ:CASY 		0.65% $28.11 Billion Consumer Cyclical Specialty Retail $859.49 +1.00%
8 Curtiss-Wright Corporation
NYSE:CW 		0.47% $26.05 Billion Industrials Aerospace & Defense $729.20 +0.66%
9 Flex Ltd
NASDAQ:FLEX 		0.45% $23.15 Billion Technology Electronic Components $142.17 +6.89%
10 XPO Logistics Inc
NYSE:XPO 		0.45% $22.76 Billion Industrials Trucking $204.50 -1.15%
11 Pure Storage Inc
NYSE:PSTG 		0.52% $22.11 Billion Technology Computer Hardware $66.97 -1.22%
12 Woodward Inc
NASDAQ:WWD 		0.39% $22.05 Billion Industrials Aerospace & Defense $369.93 -0.23%
13 United Therapeutics Corporation
NASDAQ:UTHR 		0.50% $21.42 Billion Healthcare Drug Manufacturers - Specialty & Generic $564.94 -0.74%
14 Carpenter Technology Corporation
NYSE:CRS 		0.33% $21.31 Billion Industrials Metal Fabrication $427.85 -3.88%
15 MasTec Inc
NYSE:MTZ 		0.28% $21.27 Billion Industrials Engineering & Construction $414.29 +0.49%
16 Roivant Sciences Ltd
NASDAQ:ROIV 		0.16% $20.44 Billion Healthcare Biotechnology $28.56 +0.99%
17 Royal Gold Inc
NASDAQ:RGLD 		0.45% $20.27 Billion Basic Materials Gold $238.91 +2.68%
18 EchoStar Corporation
NASDAQ:SATS 		0.11% $19.90 Billion Technology Communication Equipment $127.15 +3.69%
19 Allegheny Technologies Incorporated
NYSE:ATI 		0.26% $19.84 Billion Industrials Metal Fabrication $158.39 -2.63%
20 BWX Technologies Inc
NYSE:BWXT 		0.37% $18.81 Billion Industrials Aerospace & Defense $205.33 -2.17%
21 Burlington Stores Inc
NYSE:BURL 		0.61% $18.67 Billion Consumer Cyclical Apparel Retail $304.51 -0.68%
22 US Foods Holding Corp
NYSE:USFD 		0.57% $18.61 Billion Consumer Defensive Food Distribution $84.40 -2.85%
23 RB Global Inc.
NYSE:RBA 		0.70% $18.57 Billion Industrials Specialty Business Services $103.28 -0.15%
24 MACOM Technology Solutions Holdings Inc
NASDAQ:MTSI 		0.24% $18.53 Billion Technology Semiconductors $359.88 +4.47%
25 ITT Inc
NYSE:ITT 		0.40% $18.43 Billion Industrials Specialty Industrial Machinery $206.15 -0.79%
26 Illumina Inc
NASDAQ:ILMN 		0.45% $18.34 Billion Healthcare Diagnostics & Research $141.88 +2.29%
27 Carlyle Group Inc
NASDAQ:CG 		0.31% $18.10 Billion Financial Services Asset Management $50.63 +3.31%
28 Reliance Steel & Aluminum Co
NYSE:RS 		0.60% $17.90 Billion Basic Materials Steel $369.29 +0.05%
29 RBC Bearings Incorporated
NYSE:RBC 		0.40% $17.69 Billion Industrials Tools & Accessories $605.99 -0.91%
30 MKS Instruments Inc
NASDAQ:MKSI 		0.17% $17.51 Billion Technology Scientific & Technical Instruments $313.21 +4.13%
31 Nextracker Inc. Class A Common Stock
NASDAQ:NXT 		0.22% $17.18 Billion Technology Solar $125.91 +4.18%
32 East West Bancorp Inc
NASDAQ:EWBC 		0.39% $16.85 Billion Financial Services Banks - Regional $122.99 +0.87%
33 Tenet Healthcare Corporation
NYSE:THC 		0.48% $16.56 Billion Healthcare Medical Care Facilities $190.38 -1.93%
34 nVent Electric PLC
NYSE:NVT 		0.32% $16.41 Billion Industrials Electrical Equipment & Parts $169.95 +1.93%
35 Annaly Capital Management, Inc.
NYSE:NLY 		0.40% $16.24 Billion Real Estate REIT - Mortgage $22.61 +1.03%
36 Fabrinet
NYSE:FN 		0.26% $16.02 Billion Technology Electronic Components $621.28 -0.77%
37 W P Carey Inc
NYSE:WPC 		0.49% $15.64 Billion Real Estate REIT - Diversified $74.10 +0.27%
38 Entegris Inc
NASDAQ:ENTG 		0.41% $15.47 Billion Technology Semiconductor Equipment & Materials $149.11 +0.98%
39 Jones Lang LaSalle Incorporated
NYSE:JLL 		0.40% $15.10 Billion Real Estate Real Estate Services $329.87 +0.55%
40 Dick’s Sporting Goods Inc
NYSE:DKS 		0.44% $14.78 Billion Consumer Cyclical Specialty Retail $225.81 +1.62%
41 Watsco Inc
NYSE:WSO 		0.69% $14.69 Billion Industrials Industrial Distribution $420.60 -2.01%
42 Clean Harbors Inc
NYSE:CLH 		0.39% $14.69 Billion Industrials Waste Management $291.15 +3.11%
43 WESCO International Inc
NYSE:WCC 		0.26% $14.64 Billion Industrials Industrial Distribution $355.31 +1.26%
44 Lincoln Electric Holdings Inc
NASDAQ:LECO 		0.40% $14.62 Billion Industrials Tools & Accessories $271.11 0.00%
45 Pinnacle Financial Partners, Inc.
NASDAQ:PNFP 		0.28% $14.43 Billion Financial Services Banks - Regional $98.44 +0.81%
46 Amkor Technology Inc
NASDAQ:AMKR 		0.07% $14.36 Billion Technology Semiconductor Equipment & Materials $76.61 +6.01%
47 Carlisle Companies Incorporated
NYSE:CSL 		0.60% $14.33 Billion Industrials Building Products & Equipment $360.39 -0.02%
48 Regal Beloit Corporation
NYSE:RRX 		0.25% $14.23 Billion Industrials Specialty Industrial Machinery $214.36 +3.93%
49 Performance Food Group Co
NYSE:PFGC 		0.47% $13.95 Billion Consumer Defensive Food Distribution $93.12 +0.44%
50 Omega Healthcare Investors Inc
NYSE:OHI 		0.42% $13.95 Billion Real Estate REIT - Healthcare Facilities $47.19 +2.30%

Complete list of all companies in the MID index ranked by market capitalization. Track index constituent performance and market values. View all indices