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 $3.56 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)

$3.56 Trillion

Constituent Companies

401

Index Country

USA
Rank Company Weight (%) Market Cap (USD) Sector Industry Price 24h Change
1 Lumentum Holdings Inc
NASDAQ:LITE 		0.15% $70.29 Billion Technology Communication Equipment $957.24 +3.87%
2 Coherent Inc
NYSE:COHR 		0.34% $65.59 Billion Technology Scientific & Technical Instruments $413.84 +7.48%
3 Ciena Corp
NYSE:CIEN 		0.33% $65.53 Billion Technology Communication Equipment $463.41 +3.91%
4 Comfort Systems USA Inc
NYSE:FIX 		0.48% $64.44 Billion Industrials Engineering & Construction $1952.02 +3.96%
5 Flex Ltd
NASDAQ:FLEX 		0.45% $54.67 Billion Technology Electronic Components $149.22 -0.33%
6 Interactive Brokers Group Inc
NASDAQ:IBKR 		0.71% $41.32 Billion Financial Services Capital Markets $92.76 +2.15%
7 EMCOR Group Inc
NYSE:EME 		0.69% $36.86 Billion Industrials Engineering & Construction $842.30 +2.34%
8 Caseys General Stores Inc
NASDAQ:CASY 		0.65% $28.11 Billion Consumer Cyclical Specialty Retail $872.39 -2.54%
9 Carpenter Technology Corporation
NYSE:CRS 		0.33% $27.99 Billion Industrials Metal Fabrication $563.60 +0.38%
10 MACOM Technology Solutions Holdings Inc
NASDAQ:MTSI 		0.24% $27.61 Billion Technology Semiconductors $384.77 +1.29%
11 Curtiss-Wright Corporation
NYSE:CW 		0.47% $26.05 Billion Industrials Aerospace & Defense $762.59 +0.61%
12 XPO Logistics Inc
NYSE:XPO 		0.45% $25.92 Billion Industrials Trucking $220.74 -3.32%
13 Woodward Inc
NASDAQ:WWD 		0.39% $23.23 Billion Industrials Aerospace & Defense $402.50 +4.05%
14 Entegris Inc
NASDAQ:ENTG 		0.41% $22.71 Billion Technology Semiconductor Equipment & Materials $162.89 +8.22%
15 Pure Storage Inc
NYSE:PSTG 		0.52% $22.11 Billion Technology Computer Hardware $66.97 -1.22%
16 United Therapeutics Corporation
NASDAQ:UTHR 		0.50% $21.42 Billion Healthcare Drug Manufacturers - Specialty & Generic $549.57 +0.66%
17 MasTec Inc
NYSE:MTZ 		0.28% $21.27 Billion Industrials Engineering & Construction $371.85 +2.45%
18 MKS Instruments Inc
NASDAQ:MKSI 		0.17% $21.16 Billion Technology Scientific & Technical Instruments $375.32 +5.52%
19 Reliance Steel & Aluminum Co
NYSE:RS 		0.60% $20.51 Billion Basic Materials Steel $405.92 -1.82%
20 Roivant Sciences Ltd
NASDAQ:ROIV 		0.16% $20.44 Billion Healthcare Biotechnology $30.03 -0.03%
21 US Foods Holding Corp
NYSE:USFD 		0.57% $20.40 Billion Consumer Defensive Food Distribution $93.44 +0.13%
22 Allegheny Technologies Incorporated
NYSE:ATI 		0.26% $19.84 Billion Industrials Metal Fabrication $195.81 -1.35%
23 Synnex Corporation
NYSE:SNX 		0.31% $19.28 Billion Technology Electronics & Computer Distribution $284.65 +1.43%
24 RBC Bearings Incorporated
NYSE:RBC 		0.40% $19.16 Billion Industrials Tools & Accessories $616.95 +2.20%
25 Amkor Technology Inc
NASDAQ:AMKR 		0.07% $18.99 Billion Technology Semiconductor Equipment & Materials $85.44 +3.21%
26 RB Global Inc.
NYSE:RBA 		0.70% $18.96 Billion Industrials Specialty Business Services $110.41 +2.58%
27 EchoStar Corporation
NASDAQ:SATS 		0.11% $18.68 Billion Technology Communication Equipment $117.87 +3.32%
28 Burlington Stores Inc
NYSE:BURL 		0.61% $18.67 Billion Consumer Cyclical Apparel Retail $336.60 -0.55%
29 Illumina Inc
NASDAQ:ILMN 		0.45% $18.34 Billion Healthcare Diagnostics & Research $166.89 +3.68%
30 Royal Gold Inc
NASDAQ:RGLD 		0.45% $18.29 Billion Basic Materials Gold $215.52 +3.83%
31 BWX Technologies Inc
NYSE:BWXT 		0.37% $17.77 Billion Industrials Aerospace & Defense $193.94 +0.25%
32 ITT Inc
NYSE:ITT 		0.40% $17.45 Billion Industrials Specialty Industrial Machinery $195.18 +3.20%
33 Lattice Semiconductor Corporation
NASDAQ:LSCC 		0.23% $17.22 Billion Technology Semiconductors $148.97 +3.07%
34 Nextracker Inc. Class A Common Stock
NASDAQ:NXT 		0.22% $17.18 Billion Technology Solar $125.83 +3.24%
35 WESCO International Inc
NYSE:WCC 		0.26% $16.94 Billion Industrials Industrial Distribution $347.79 +0.29%
36 W P Carey Inc
NYSE:WPC 		0.49% $16.81 Billion Real Estate REIT - Diversified $75.47 -1.62%
37 East West Bancorp Inc
NASDAQ:EWBC 		0.39% $16.70 Billion Financial Services Banks - Regional $131.32 -0.99%
38 Carlyle Group Inc
NASDAQ:CG 		0.31% $16.65 Billion Financial Services Asset Management $46.24 +1.07%
39 nVent Electric PLC
NYSE:NVT 		0.32% $16.41 Billion Industrials Electrical Equipment & Parts $169.00 +1.91%
40 Fabrinet
NYSE:FN 		0.26% $16.02 Billion Technology Electronic Components $635.58 +4.02%
41 Annaly Capital Management, Inc.
NYSE:NLY 		0.40% $15.91 Billion Real Estate REIT - Mortgage $22.24 +1.09%
42 Tenet Healthcare Corporation
NYSE:THC 		0.48% $15.43 Billion Healthcare Medical Care Facilities $179.11 +2.55%
43 Ovintiv Inc
NYSE:OVV 		0.33% $15.39 Billion Energy Oil & Gas E&P $54.31 -5.47%
44 Mueller Industries Inc
NYSE:MLI 		0.33% $15.23 Billion Industrials Metal Fabrication $137.75 -0.25%
45 Performance Food Group Co
NYSE:PFGC 		0.47% $14.78 Billion Consumer Defensive Food Distribution $104.10 +0.03%
46 Clean Harbors Inc
NYSE:CLH 		0.39% $14.71 Billion Industrials Waste Management $284.03 -1.30%
47 Regal Beloit Corporation
NYSE:RRX 		0.25% $14.53 Billion Industrials Specialty Industrial Machinery $218.85 +3.08%
48 Dick’s Sporting Goods Inc
NYSE:DKS 		0.44% $14.51 Billion Consumer Cyclical Specialty Retail $220.04 -0.43%
49 Pinnacle Financial Partners, Inc.
NASDAQ:PNFP 		0.28% $14.43 Billion Financial Services Banks - Regional $98.44 +0.81%
50 Jazz Pharmaceuticals PLC
NASDAQ:JAZZ 		0.25% $14.17 Billion Healthcare Biotechnology $230.59 +0.01%

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