ITOT vs IWB: Holdings Overlap
ITOTiShares Core S&P Total U.S. Stock Market ETF
iShares · 2487 holdings · $97.6B · as of 2026-03-31
iShares · 1005 holdings · $49.9B · as of 2026-03-31
How similar are ITOT and IWB?
iShares Core S&P Total U.S. Stock Market ETF (ITOT, by iShares) holds 2487 positions; iShares Russell 1000 ETF (IWB, by iShares) holds 1005. They have 981 holdings in common, and by portfolio weight the two funds are 94.5% identical. In practical terms the pair is essentially interchangeable, so holding both adds little diversification.
- Overlap by Weight
- 94.5%Sum of the smaller weight of each shared holding
- Shared Holdings
- 981ITOT holds 2487 · IWB holds 1005
- Weight in Shared Holdings
- ITOT 95%·IWB 99%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
1506 of 2487 positions (5.2% of the fund) are not held by IWB. Showing the top 30 by weight.
Only in IWB
24 of 1005 positions (0.5% of the fund) are not held by ITOT.
Sector Breakdown
| Sector | ITOT | IWB |
|---|---|---|
| Information Technology | 30.8% | 30.9% |
| Financials | 12.9% | 12.9% |
| Industrials | 10.2% | 9.9% |
| Communication Services | 9.7% | 10.2% |
| Consumer Discretionary | 9.9% | 10.0% |
| Other Sectors | 26.2% | 26.0% |
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% |
| IWB | +3.4% | +13.9% | +23.1% | +20.9% | +12.6% | +15.0% | 0.89% |
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 IWB →
Shared Holdings(981)
The top 10 shared positions account for 34% of the overlap, led by NVDA, AAPL and MSFT.
 NVDANVIDIA Corp. COM | 6.69% | 6.81% | 6.69% |
|---|---|---|---|
 AAPLApple Inc. COM | 5.88% | 6.10% | 5.88% |
 MSFTMicrosoft Corp. COM | 4.34% | 4.58% | 4.34% |
 AMZNAmazon.com, Inc. COM | 3.21% | 3.33% | 3.21% |
 GOOGLAlphabet Inc. CAP STK CL A | 2.64% | 2.79% | 2.64% |
 AVGOBroadcom Inc COM | 2.32% | 2.39% | 2.32% |
 GOOGAlphabet Inc. CAP STK CL C | 2.12% | 2.27% | 2.12% |
 METAMeta Platforms, Inc., Class A | 1.98% | 2.08% | 1.98% |
 TSLATesla Inc COM | 1.65% | 1.75% | 1.65% |
 BRK-BBerkshire Hathaway, Inc., Class B | 1.39% | 1.47% | 1.39% |
 JPMJPMorgan Chase & Co. COM | 1.25% | 1.33% | 1.25% |
 LLYEli Lilly & Co. COM | 1.15% | 1.23% | 1.15% |
 XOMExxon Mobil Corp. COM | 1.12% | 1.20% | 1.12% |
 JNJJohnson & Johnson COM | 0.93% | 0.98% | 0.93% |
 WMTWalmart Inc COM | 0.86% | 0.90% | 0.86% |
 VVisa, Inc., Class A | 0.80% | 0.85% | 0.80% |
 COSTCostco Wholesale Corporation COM | 0.70% | 0.74% | 0.70% |
 MAMasterCard Incorporated CL A | 0.64% | 0.67% | 0.64% |
 NFLXNetflix, Inc. COM | 0.64% | 0.68% | 0.64% |
 CVXChevron Corp. COM | 0.61% | 0.65% | 0.61% |
 ABBVAbbVie Inc. COM | 0.61% | 0.64% | 0.61% |
 MUMicron Technology Inc. COM | 0.60% | 0.63% | 0.60% |
 PGThe Procter & Gamble Co. COM | 0.53% | 0.57% | 0.53% |
 PLTRPalantir Technologies, Inc., Class A | 0.53% | 0.53% | 0.53% |
 AMDAdvanced Micro Devices Inc. COM | 0.52% | 0.55% | 0.52% |
Showing the top 250 of 981 shared holdings by overlap weight.
Frequently Asked Questions
How much do ITOT and IWB overlap?
ITOT and IWB overlap by 94.5% of portfolio weight. They share 981 holdings (ITOT holds 2487 positions and IWB holds 1005), based on each fund's latest SEC-reported holdings.
Is it redundant to own both ITOT and IWB?
The two portfolios are 94.5% 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 IWB?
The largest positions held by both funds are NVDA, AAPL, MSFT, AMZN and GOOGL. Together the top 10 shared positions account for 34% of the total overlap.
What does ITOT own that IWB doesn't?
1506 positions (5.2% of ITOT) are unique to ITOT, led by STX, TEL and NXPI. In the other direction, 24 positions (0.5% of IWB) are unique to IWB.