ITOT vs DFUS: Holdings Overlap
ITOTiShares Core S&P Total U.S. Stock Market ETF
iShares · 2487 holdings · $97.6B · as of 2026-03-31
DFUSDimensional U.S. Equity Market ETF
Dimensional · 2235 holdings · $20.9B · as of 2026-04-30
Holdings snapshots are 30 days apart (ITOT: 2026-03-31, DFUS: 2026-04-30). Weights and index membership change between snapshots, so the true current overlap is typically higher than shown. For funds tracking the same index, the gap can be 5–15 points.
How similar are ITOT and DFUS?
iShares Core S&P Total U.S. Stock Market ETF (ITOT, by iShares) holds 2487 positions; Dimensional U.S. Equity Market ETF (DFUS, by Dimensional) holds 2235. They have 1915 holdings in common, and by portfolio weight the two funds are 92.5% identical. In practical terms the pair is essentially interchangeable, so holding both adds little diversification.
- Overlap by Weight
- 92.5%Sum of the smaller weight of each shared holding
- Shared Holdings
- 1915ITOT holds 2487 · DFUS holds 2235
- Weight in Shared Holdings
- ITOT 96%·DFUS 100%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in ITOT
572 of 2487 positions (3.4% of the fund) are not held by DFUS. Showing the top 30 by weight.
Only in DFUS
320 of 2235 positions (0.3% of the fund) are not held by ITOT. Showing the top 30 by weight.
Sector Breakdown
| Sector | ITOT | DFUS |
|---|---|---|
| Information Technology | 30.8% | 33.3% |
| Financials | 12.9% | 12.6% |
| Communication Services | 9.7% | 10.8% |
| Industrials | 10.2% | 10.4% |
| Consumer Discretionary | 9.9% | 10.3% |
| Other Sectors | 26.2% | 22.3% |
Share of each fund's portfolio weight by GICS-style sector, compiled from issuer fund data and our own classification of the holdings, not the issuers' published sector charts.
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| ITOT | +3.3% | +14.6% | +24.1% | +20.9% | +12.3% | +14.9% | 0.97% |
| DFUS | +3.4% | +14.5% | +24.4% | +21.2% | +13.1% | — | 0.83% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in ITOT vs DFUS →
Shared Holdings(1915)
The top 10 shared positions account for 35% of the overlap, led by NVDA, AAPL and MSFT.
 NVDANVIDIA Corp. COM | 6.69% | 6.96% | 6.69% |
|---|---|---|---|
 AAPLApple Inc. COM | 5.88% | 5.85% | 5.85% |
 MSFTMicrosoft Corp. COM | 4.34% | 4.51% | 4.34% |
 AMZNAmazon.com, Inc. COM | 3.21% | 3.83% | 3.21% |
 GOOGLAlphabet Inc. CAP STK CL A | 2.64% | 3.30% | 2.64% |
 AVGOBroadcom Inc COM | 2.32% | 2.89% | 2.32% |
 GOOGAlphabet Inc. CAP STK CL C | 2.12% | 2.74% | 2.12% |
 METAMeta Platforms, Inc., Class A | 1.98% | 2.01% | 1.98% |
 TSLATesla Inc COM | 1.65% | 1.78% | 1.65% |
 BRK-BBerkshire Hathaway, Inc., Class B | 1.39% | 1.30% | 1.30% |
 JPMJPMorgan Chase & Co. COM | 1.25% | 1.26% | 1.25% |
 LLYEli Lilly & Co. COM | 1.15% | 1.12% | 1.12% |
 XOMExxon Mobil Corp. COM | 1.12% | 0.97% | 0.97% |
 WMTWalmart Inc COM | 0.86% | 0.87% | 0.86% |
 JNJJohnson & Johnson COM | 0.93% | 0.83% | 0.83% |
 VVisa, Inc., Class A | 0.80% | 0.83% | 0.80% |
 COSTCostco Wholesale Corporation COM | 0.70% | 0.68% | 0.68% |
 MAMasterCard Incorporated CL A | 0.64% | 0.63% | 0.63% |
 MUMicron Technology Inc. COM | 0.60% | 0.89% | 0.60% |
 NFLXNetflix, Inc. COM | 0.64% | 0.59% | 0.59% |
 ABBVAbbVie Inc. COM | 0.61% | 0.56% | 0.56% |
 CVXChevron Corp. COM | 0.61% | 0.55% | 0.55% |
 AMDAdvanced Micro Devices Inc. COM | 0.52% | 0.86% | 0.52% |
 CATCaterpillar Inc COM | 0.52% | 0.63% | 0.52% |
 PGThe Procter & Gamble Co. COM | 0.53% | 0.51% | 0.51% |
Showing the top 250 of 1915 shared holdings by overlap weight.
Frequently Asked Questions
How much do ITOT and DFUS overlap?
ITOT and DFUS overlap by 92.5% of portfolio weight. They share 1915 holdings (ITOT holds 2487 positions and DFUS holds 2235), based on each fund's latest SEC-reported holdings.
Is it redundant to own both ITOT and DFUS?
The two portfolios are 92.5% identical by weight. Owning both is largely redundant: they are close to the same portfolio, so a second position mostly duplicates the first.
What are the biggest shared holdings of ITOT and DFUS?
The largest positions held by both funds are NVDA, AAPL, MSFT, AMZN and GOOGL. Together the top 10 shared positions account for 35% of the total overlap.
What does ITOT own that DFUS doesn't?
572 positions (3.4% of ITOT) are unique to ITOT, led by WELL, PLD and EQIX. In the other direction, 320 positions (0.3% of DFUS) are unique to DFUS.