ETF comparison
IJH vs MDY
Both US Mid Cap.
iShares Core S&P Mid-Cap ETF · State Street SPDR S&P MIDCAP 400 ETF Trust
Holdings overlap
374 positions appear in both funds. Buying equal dollars of IJH and MDY would leave roughly 85.4% of each dollar exposed to the same underlying securities.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — see what we don't score for why.
Cost difference
IJH is 18 bps cheaper than MDY. On a $100,000 position that's about $180/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 the cost calculator pre-filled with IJH vs MDY.
Top shared holdings
374 shared in total| # | Holding | In IJH | In MDY | Overlap |
|---|---|---|---|---|
| 1 | Curtiss-Wright Corp. | 0.78% | 0.78% | 0.78% |
| 2 | XPO Inc | 0.71% | 0.67% | 0.67% |
| 3 | Woodward Inc. | 0.67% | 0.69% | 0.67% |
| 4 | United Therapeutics Corporation | 0.80% | 0.65% | 0.65% |
| 5 | US Foods Holding Corp | 0.63% | 0.64% | 0.63% |
| 6 | ATI Inc | 0.62% | 0.71% | 0.62% |
| 7 | Mastec, Inc. | 0.62% | 0.64% | 0.62% |
| 8 | Carpenter Technology Corporation | 0.61% | 0.82% | 0.61% |
| 9 | Twilio Inc | 0.60% | 0.88% | 0.60% |
| 10 | Illumina Inc | 0.59% | 0.79% | 0.59% |
| 11 | Everpure Inc. | 0.58% | 0.64% | 0.58% |
| 12 | Entegris Inc | 0.56% | 0.62% | 0.56% |
Only in IJH
25 total- TechnipFMC PLC 0.87%
- Casey'S General Stores Inc. 0.84%
- FLEX LTD 0.75%
- NVent Electric PLC 0.60%
- Fabrinet 0.58%
- Renaissancere Holdings Ltd. 0.40%
- Roivant Sciences Ltd 0.39%
- Jazz Pharmaceuticals PLC 0.36%
- Topbuild Corporation 0.31%
- CNH INDUSTRIAL NV 0.30%
Only in MDY
27 total- U.S. Dollar 0.84%
- TechnipFMC plc 0.74%
- nVent Electric plc 0.68%
- Roku Inc. Class A 0.52%
- Fabrinet 0.50%
- Coeur Mining Inc. 0.50%
- Roivant Sciences Ltd. 0.44%
- Jazz Pharmaceuticals Public Limited Company 0.42%
- RenaissanceRe Holdings Ltd. 0.39%
- Toast Inc. Class A 0.37%
Open IJH 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 methodology and 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.