ITOT vs XLU: how much do they overlap?
iShares Core S&P Total U.S. Stock Market ETF (ITOT) · Utilities Select Sector SPDR ETF (XLU)
overlap by weight · 31 shared holdings
ITOT: 2470 holdings (as of 2026-03-31) · XLU: 32 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
ITOT and XLU 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 ITOT | in XLU |
|---|---|---|---|
| NextEra Energy, Inc. | NEE | 0.31% | 12.85% |
| Southern Co. (The) | SO | 0.17% | 7.59% |
| Duke Energy Corp. | DUK | 0.16% | 6.91% |
| Constellation Energy Corp. | CEG | 0.14% | 5.67% |
| American Electric Power Co., Inc. | AEP | 0.11% | 5.15% |
| Sempra | SRE | 0.1% | 4.38% |
| Dominion Energy, Inc. | D | 0.08% | 4.32% |
| Entergy Corp. | ETR | 0.08% | 3.69% |
| Exelon Corp. | EXC | 0.08% | 3.36% |
| Vistra Corp. | VST | 0.08% | 3.54% |
FAQ
How much do ITOT and XLU overlap?
ITOT and XLU have a 2.2% overlap by weight, sharing 31 holdings (out of 2470 in ITOT and 32 in XLU), based on official issuer holdings as of 2026-03-31.
What does 2.2% overlap mean?
ITOT and XLU hold mostly different stocks. Combining them genuinely spreads your exposure across different parts of the market.
Which stocks do ITOT and XLU both hold?
The largest shared positions are NextEra Energy, Inc., Southern Co. (The), Duke Energy Corp., Constellation Energy Corp., American Electric Power Co., Inc.. The full list of top shared holdings with weights in each fund is shown on this page.