ETF comparison
IJKvsMDY
Both US Mid Cap.
iShares S&P Mid-Cap 400 Growth ETF · State Street SPDR S&P MIDCAP 400 ETF Trust
Holdings overlap
228 positions appear in both funds. Buying equal dollars of IJK and MDY would leave roughly58.3%of each dollar exposed to the same underlying securities.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — seewhat we don't scorefor why.
Cost difference
IJK is 7 bps cheaper than MDY. On a $100,000 position that's about $70/yr more in fees for MDY.
Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open thecost calculator pre-filled with IJK vs MDY.
Top shared holdings
228 shared in total| # | Holding | In IJK | In MDY | Overlap |
|---|---|---|---|---|
| 1 | Twilio, Inc. | 1.66% | 1.01% | 1.01% |
| 2 | Everpure, Inc. | 1.32% | 0.86% | 0.86% |
| 3 | Okta, Inc. | 1.21% | 0.79% | 0.79% |
| 4 | ATI, Inc. | 1.42% | 0.77% | 0.77% |
| 5 | Illumina, Inc. | 0.76% | 0.93% | 0.76% |
| 6 | Carpenter Technology Corp. | 1.62% | 0.64% | 0.64% |
| 7 | Tenet Healthcare Corp. | 0.85% | 0.63% | 0.63% |
| 8 | Coeur Mining, Inc. | 0.89% | 0.62% | 0.62% |
| 9 | XPO, Inc. | 1.28% | 0.60% | 0.60% |
| 10 | Royal Gold, Inc. | 0.86% | 0.60% | 0.60% |
| 11 | Curtiss-Wright Corp. | 1.48% | 0.58% | 0.58% |
| 12 | United Therapeutics Corp. | 1.22% | 0.58% | 0.58% |
Only in IJK
17 total- BlackRock Funds III5.77%
- nVent Electric plc1.45%
- TechnipFMC plc1.40%
- Fabrinet1.07%
- Jazz Pharmaceuticals plc0.80%
- TopBuild Corp.0.53%
- Chart Industries, Inc.0.50%
- Roivant Sciences Ltd.0.49%
- RenaissanceRe Holdings Ltd.0.37%
- Valaris Ltd.0.25%
Only in MDY
173 total- TechnipFMC plc0.88%
- U.S. Dollar0.77%
- nVent Electric plc0.68%
- US Foods Holding Corp.0.64%
- Reliance Inc.0.56%
- TD SYNNEX Corporation0.54%
- Permian Resources Corporation Class A0.52%
- Ovintiv Inc0.50%
- Jones Lang LaSalle Incorporated0.47%
- Reinsurance Group of America Incorporated0.46%
Open IJK or MDY at a brokerage
Both funds trade commission-free at major US brokerages.
Affiliate links — opening an account through these earns PlainIndex a one-time referral. Scoring is computed before any affiliate consideration; see our methodologyand funding disclosure.
Holdings overlap is the sum of min(weight_a, weight_b) over positions matched on ISIN (CUSIP fallback). Methodology: see/methodology/.
Comparing two funds doesn't endorse swapping one for the other. Tax-lot history, account type, and personal goals matter — PlainIndex publishes data and methodology, not investment advice.