IJH vs SPY: how much do they overlap?
iShares Core S&P Mid-Cap ETF (IJH) · SPDR S&P 500 ETF Trust (SPY)
overlap by weight · 2 shared holdings
IJH: 399 holdings (as of 2026-03-31) · SPY: 504 holdings (as of 09-Jul-2026)
Note: the two funds' latest official filings have different dates, which can understate overlap slightly for funds tracking similar indexes.
Low overlap
What this means
IJH and SPY hold mostly different stocks. Combining them genuinely spreads your exposure across different parts of the market.
Overlap by weight sums the smaller of the two funds' weights for every stock they both hold — it answers "how much of my money is in the same stocks either way?" See methodology.
Top shared holdings
| Company | Ticker | in IJH | in SPY |
|---|---|---|---|
| FLEX LTD | FLEX | 0.75% | 0.08% |
| Casey'S General Stores Inc. | CASY | 0.84% | 0.05% |
FAQ
How much do IJH and SPY overlap?
IJH and SPY have a 0.1% overlap by weight, sharing 2 holdings (out of 399 in IJH and 504 in SPY), based on official issuer holdings as of 2026-03-31.
What does 0.1% overlap mean?
IJH and SPY hold mostly different stocks. Combining them genuinely spreads your exposure across different parts of the market.
Which stocks do IJH and SPY both hold?
The largest shared positions are FLEX LTD, Casey'S General Stores Inc.. The full list of top shared holdings with weights in each fund is shown on this page.