MDY holdings and overlap

SPDR S&P MidCap 400 ETF (MDY) holds 400 positions in its SPDR file of 2026-10-15. Its three largest are Okta (OKTA) at 1.01%, TechnipFMC (FTI) at 0.78% and ATI (ATI) at 0.75%, and its ten largest make up 7.1% of the fund.

In its SPDR file of 2026-10-15, MDY is 23.3% industrials, 14.9% financials and 14.0% technology by sector, with none of it in mega-cap tech or in the ten largest US companies by market value.

Edited by VoidLab Data through Last revised

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MDYSPDR S&P MidCap 400 ETFUS Mid-Cap Blend, State Street SPDR, 400 positions
Last close, 2026-10-15
$666.11 +1.00%
52-week range 569 to 717
Largest position
OKTA
1.01% of the ETF, Okta
Positions
400
7.1% in the ten largest
Cost per year
0.23%
$23 a year on $10,000
Assets
$25.2B
under management
Return, 3 years
+57.8%
cumulative, total return
Worst fall
-21.0%
peak to trough, 3 years, weekly closes

What does MDY hold, as of its issuer file of 2026-10-15?

Okta is 1.01% of MDY on its own, against a median largest position of 1.1% across the 12 US Mid-Cap Blend funds with a page here. 90 of the 594 funds with a page hold OKTA, and MDY gives it more weight than all but 14 of them.

The 100 largest of the 400 positions in MDY's file; all 400 are in the fund's JSON file.
RankCompanyWeightWeight bar
1 OKTA Okta 1.01%
2 FTI TechnipFMC 0.78%
3 ATI ATI 0.75%
4 NVT nVent Electric 0.68%
5 UTHR United Therapeutics Corporation 0.67%
6 ENTG Entegris 0.65%
7 THC Tenet Healthcare 0.64%
8 XPO XPO 0.64%
9 USFD US Foods 0.64%
10 RS Reliance 0.6%
11 ROKU Roku 0.59%
12 SNX TD SYNNEX 0.59%
13 PR Permian Resources 0.57%
14 RGLD Royal Gold 0.57%
15 WWD Woodward 0.57%
16 DINO HF Sinclair 0.56%
17 NTNX Nutanix 0.55%
18 MTSI MACOM Technology Solutions 0.55%
19 CRS Carpenter Technology 0.55%
20 CW Curtiss-Wright Corporation 0.54%
21 ROIV Roivant Sciences 0.54%
22 DT Dynatrace 0.53%
23 OVV DE Ovintiv 0.53%
24 ITT ITT 0.52%
25 EWBC East West Bancorp 0.5%
26 RGA Reinsurance Group of America 0.5%
27 WCC WESCO International 0.49%
28 BURL Burlington Stores 0.49%
29 TOST Toast 0.48%
30 RBA RB Global 0.47%
31 SN SharkNinja 0.47%
32 CLH Clean Harbors 0.47%
33 CDE Coeur Mining 0.46%
34 TLN Talen Energy 0.46%
35 RBC RBC Bearings 0.46%
36 EXEL Exelixis 0.45%
37 APG APi Group 0.45%
38 MKSI MKS 0.45%
39 PFGC Performance Food Group 0.45%
40 LSCC Lattice Semiconductor 0.44%
41 SGI Somnigroup International 0.43%
42 DOCU DocuSign 0.43%
43 WPC W. P. Carey Inc. REIT 0.43%
44 GWRE Guidewire Software 0.42%
45 ARMK Aramark 0.42%
46 RNR RenaissanceRe 0.42%
47 JLL Jones Lang LaSalle 0.42%
48 MEDP Medpace 0.41%
49 TRU TransUnion 0.41%
50 PNFP Pinnacle Financial Partners 0.41%
51 LECO Lincoln Electric 0.41%
52 SUI Sun Communities Inc. 0.41%
53 NBIX Neurocrine Biosciences 0.4%
54 JAZZ Jazz Pharmaceuticals 0.4%
55 NLY Annaly Capital Management 0.4%
56 FN Fabrinet 0.4%
57 OHI Omega Healthcare Investors 0.4%
58 HALO Halozyme Therapeutics 0.4%
59 STRL Sterling Infrastructure 0.4%
60 EQH Equitable 0.39%
61 CACI CACI International 0.39%
62 SMTC Semtech 0.39%
63 MLI Mueller Industries 0.39%
64 UNM Unum Group 0.39%
65 CSL Carlisle Companies 0.39%
66 GGG Graco 0.38%
67 MANH Manhattan Associates 0.38%
68 BJ BJ's Wholesale Club 0.38%
69 LAMR Lamar Advertising 0.37%
70 RPM RPM International 0.37%
71 NXT Nextpower 0.37%
72 PEN Penumbra 0.37%
73 EHC Encompass Health 0.37%
74 BWXT BWX Technologies 0.37%
75 TOL Toll Brothers 0.36%
76 FIVE Five Below 0.36%
77 AIT Applied Industrial Technologies 0.36%
78 CCK Crown 0.35%
79 DTM DT Midstream 0.35%
80 MTZ MasTec 0.35%
81 BWA BorgWarner 0.35%
82 HUBS HubSpot 0.35%
83 ELAN Elanco Animal Health 0.34%
84 ELS Equity Lifestyle Properties 0.34%
85 SITM SiTime 0.34%
86 RGEN Repligen 0.34%
87 COKE Coca-Cola Consolidated 0.34%
88 AHR American Healthcare REIT 0.34%
89 GME GameStop 0.33%
90 WTRG Essential Utilities 0.33%
91 ONTO Onto Innovation 0.33%
92 GLPI Gaming and Leisure Properties 0.33%
93 TXRH Texas Roadhouse 0.33%
94 ARW Arrow Electronics 0.33%
95 AR Antero Resources 0.33%
96 MOH Molina Healthcare 0.32%
97 SCI Service Corporation International 0.32%
98 SEIC SEI Investments 0.32%
99 AVTR Avantor 0.32%
100 BMRN BioMarin Pharmaceutical 0.32%

The most recent file State Street SPDR has published for MDY is dated 2026-10-15, 1 day before these prices, which is the median for the State Street SPDR ETFs covered here. Every one of the 400 positions MDY holds, with its weight, is in the fund's JSON file. See the other 89 ETFs with a page here that hold OKTA, and how their weights compare with the 1.01% MDY gives it.

Category: US Mid-Cap Blend, set by TickerInside from the ETF's own latest file. In its file of 2026-10-15, 99% of its stocks are US companies; weighted by holding, they sit where 92% of their market's value is in larger companies (mid: 78% to 94%); growth index funds hold 36% of their value against 35% for companies of the same sizes in the whole market (blend: within 10 points). How categories are set.

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How much money went into or out of MDY?

On the close of Monday, October 12, 2026, $217 million went into MDY, 0.84% of its assets, as it created shares. Over its last 5 closes, a net inflow of $295 million, 3 of them measured.

MDY's money flows on its last 10 closes, 29 Sep 2026 to 12 Oct 2026, largest inflow $217 million on 12 Oct 2026, largest outflow $82 million on 30 Sep 2026
2026-09-292026-10-12

From MDY's own holdings files. Every ETF's latest flows.

How is MDY split by sector?

SectorWeightWeight bar
Industrials23.3%
Financials14.9%
Technology14.0%
Consumer discretionary10.3%
Health care10.2%
Real estate6.9%
Materials5.9%
Energy5.3%
Consumer staples3.3%
Utilities3.1%
Communication services1.6%

From its SPDR file of 2026-10-15. How these are measured.

What does MDY duplicate?

The ETF nearest to MDY is SPMD: the two hold 99.0% of their weight in common, in the 400 companies both own, and 100.0% of MDY itself is also held there. Owning MDY alongside the ETFs at the top of this table means holding mostly the same companies twice. MDY is close to contained in SPMD.

ETFOverlap by weightOf MDY held thereOf that ETF in MDYCompanies in bothOverlap bar
SPMD 99.0% 100.0% 100.0% 400
IJH 99.0% 100.0% 100.0% 400
QVMM 88.0% 89.1% 100.0% 358
IVOO 85.8% 93.9% 94.2% 381
MDYG 64.6% 66.7% 100.0% 247
MDYV 62.9% 67.0% 100.0% 296
IVOV 59.9% 64.5% 97.0% 288
IVOG 58.1% 61.3% 91.7% 231
RWK 57.2% 99.5% 100.0% 398
SCHM 53.2% 82.6% 53.7% 299
MSML 44.6% 84.9% 44.7% 368
VB 43.4% 98.9% 43.5% 396

The holdings of IVOO, IVOV and IVOG are from their SEC Form N-PORT filings for the period ended 2026-05-31, filed 2026-07-29. SCHM's holdings are from its SEC Form N-PORT for the period ended 2026-05-31, filed 2026-07-24. VB's holdings are from its SEC Form N-PORT for the period ended 2026-06-30, filed 2026-08-28. The other ETFs' holdings are from their issuers' latest files. Check MDY against any ETF in the ETF overlap calculator · how overlap is measured.

What adds something different to MDY?

MCHI shares 0% of weight with MDY and its weekly returns correlate with it at 0.29 over three years. The table lists the covered ETFs with the least in common with MDY, least shared weight first and, among equals, lowest correlation.

ETFNameOverlap by weightCorrelation, 3yCompanies in both
MCHI iShares MSCI China ETF 0.0% 0.29 0
SMIN iShares MSCI India Small-Cap ETF 0.0% 0.38 0
KXI iShares Global Consumer Staples ETF 0.0% 0.44 0
KSA iShares MSCI Saudi Arabia ETF 0.0% 0.46 0
PFF iShares Preferred and Income Securities ETF 0.0% 0.69 0
OEF iShares S&P 100 ETF 0.0% 0.70 0
SCZ iShares MSCI EAFE Small-Cap ETF 0.0% 0.74 0
XVV iShares ESG Select Screened S&P 500 ETF 0.0% 0.77 0

Cost, returns and risk

Expense ratio0.23%
Dividend yield1.07%
Total return, 1 year14.4%
Total return, 3 years cumulative57.8%
Total return, 5 years cumulative39.0%
Volatility, annualised16.2%
Worst fall, 3 years-21.0%
Beta against SPY, 3 years of weekly returns0.91
Weight in the ten largest positions7.1%
Largest single position1.0%
Assets under management$25.2B

Expense ratio, yield and assets are reference data; the weight in the ten largest positions and the largest single position are from the issuer file of 2026-10-15; every other figure is computed here from weekly closes.

How it moves with the market

AgainstCorrelation, 3 yearsCovariance, annualised, in percent squared
SPY0.80often in step184
QQQ0.66loosely linked208

Weekly total returns. What the bands mean · why the covariance is printed.

Year by year

YearTotal return
202611.2%
20257.2%
202413.6%
202316.1%
2022-13.3%

One year

MDY 112 SPY 115
2025-10-242026-10-16
MDY rebased to 100 a year ago, weekly closes, prices through 2026-10-16.

Where to go next

Holdings from the most recent file State Street SPDR has published, dated 2026-10-15. Prices through 2026-10-16. How every figure here is produced. Measurements, not investment advice.

Cite this page

TickerInside, SPDR S&P MidCap 400 ETF (MDY), holdings from the issuer's file of 2026-10-15, https://tickerinside.com/etf/mdy/, CC BY 4.0

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