IJH vs IWM: how much do they overlap?
iShares Core S&P Mid-Cap ETF (IJH) · iShares Russell 2000 ETF (IWM)
overlap by weight · 91 shared holdings
IJH: 399 holdings (as of 2026-03-31) · IWM: 1934 holdings (as of 2026-03-31)
Low overlap
What this means
IJH and IWM 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 IWM |
|---|---|---|---|
| Fabrinet | FN | 0.58% | 0.64% |
| NEXTPOWER INC | NXT | 0.56% | 0.6% |
| Kratos Defense & Security Solutions, Inc. | KTOS | 0.41% | 0.43% |
| Sterling Infrastructure Inc | STRL | 0.39% | 0.41% |
| Hecla Mining Company | HL | 0.39% | 0.4% |
| Advanced Energy Industries, Inc. | AEIS | 0.38% | 0.41% |
| Ensign Group Inc | ENSG | 0.36% | 0.38% |
| Dycom Industries, Inc. | DY | 0.32% | 0.34% |
| TTM Technologies Inc | TTMI | 0.31% | 0.34% |
| SPX TECHNOLOGIES INC | SPXC | 0.31% | 0.33% |
FAQ
How much do IJH and IWM overlap?
IJH and IWM have a 16.9% overlap by weight, sharing 91 holdings (out of 399 in IJH and 1934 in IWM), based on official issuer holdings as of 2026-03-31.
What does 16.9% overlap mean?
IJH and IWM hold mostly different stocks. Combining them genuinely spreads your exposure across different parts of the market.
Which stocks do IJH and IWM both hold?
The largest shared positions are Fabrinet, NEXTPOWER INC, Kratos Defense & Security Solutions, Inc., Sterling Infrastructure Inc, Hecla Mining Company. The full list of top shared holdings with weights in each fund is shown on this page.