IJR vs ITOT: how much do they really overlap?
IJR (iShares Core S&P Small-Cap ETF, tracking the S&P SmallCap 600) and ITOT (iShares Core S&P Total US Stock Market ETF, tracking the S&P Total Market) overlap by roughly 0% by weight. 0 of IJR's top 10 holdings also appear in ITOT. A 50/50 blend of the two behaves like about 230 equally-weighted bets (diversification grade A). In short, the two funds hold almost none of the same securities — they are complementary, not redundant.
The same companies, in both funds
These 0 holdings appear in both IJR and ITOT. The weight columns show how much of each fund each name represents.
| Holding | in IJR | in ITOT |
|---|
Only in IJR
iShares Core S&P Small-Cap ETF — US small-cap. Its biggest holdings that ITOT doesn’t have:
| XTSLA BLK CSH FND TREASURY SL AGENCY | 2.12% |
| CORT CORCEPT THERAPEUTICS INC | 0.63% |
| VSAT VIASAT INC | 0.59% |
| GKOS GLAUKOS CORP | 0.55% |
| MTCH MATCH GROUP INC | 0.51% |
| EAT BRINKER INTERNATIONAL INC | 0.50% |
| RHP RYMAN HOSPITALITY PROPERTIES REIT | 0.47% |
| PTGX PROTAGONIST THERAPEUTICS INC | 0.47% |
Only in ITOT
iShares Core S&P Total US Stock Market ETF — total US market. Its biggest holdings that IJR doesn’t have:
| AAPL APPLE INC | 6.78% |
| NVDA NVIDIA CORP | 6.54% |
| MSFT MICROSOFT CORP | 4.64% |
| AMZN AMAZON.COM INC | 3.19% |
| GOOGL ALPHABET INC CLASS A | 2.71% |
| AVGO BROADCOM INC | 2.54% |
| GOOG ALPHABET INC CLASS C | 2.18% |
| META META PLATFORMS INC CLASS A | 1.64% |
So — essentially different. Should you hold both?
IJR and ITOT hold almost none of the same securities — they are complementary, not redundant. Held together they genuinely broaden your exposure — a 50/50 blend reaches ~230 effective positions (grade A), because they hold largely different securities.
Holdings as of — IJR: Jul 30, 2026 (iShares (BlackRock)); ITOT: Jul 30, 2026 (iShares (BlackRock)). Refreshed monthly. Overlap is measured across each fund’s largest holdings (top 50); the diffuse long tail barely moves the math.
See this for YOUR whole portfolio, free →IJR vs ITOT — FAQ
- How much do IJR and ITOT overlap?
- IJR and ITOT overlap by approximately 0% measured by portfolio weight — that is the share of the smaller fund's holdings (by weight) that also sit inside the other. 0 of IJR's 10 largest holdings are also held by ITOT. They share 0 of their listed top holdings in total.
- Is it redundant to hold both IJR and ITOT?
- Because they hold almost none of the same securities — they are complementary, not redundant, holding both is not redundant — each fund covers largely different holdings, so together they broaden your exposure. A 50/50 blend has an effective 230 positions and a A diversification grade.
- What does ITOT hold that IJR doesn't?
- ITOT's largest holdings that IJR doesn't hold include AAPL, NVDA, MSFT, AMZN, GOOGL. Its category is total US market, versus IJR's US small-cap.
- Which is more concentrated, IJR or ITOT?
- IJR's top 10 holdings are 30% of its listed weight; ITOT's are 59%. The more concentrated fund leans harder on its largest names.