ITOT vs XLK: Holdings Overlap
ITOTiShares Core S&P Total U.S. Stock Market ETF
iShares · 2487 holdings · $97.6B · as of 2026-03-31
XLKState Street® Technology Select Sector SPDR® ETF
State Street (SPDR) · 73 holdings · $122.8B · as of 2026-08-06
Holdings snapshots are 128 days apart (ITOT: 2026-03-31, XLK: 2026-08-06). 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 XLK?
iShares Core S&P Total U.S. Stock Market ETF (ITOT, by iShares) holds 2487 positions; State Street® Technology Select Sector SPDR® ETF (XLK, by State Street (SPDR)) holds 73. They have 73 holdings in common, and by portfolio weight the two funds are 29.0% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 29.0%Sum of the smaller weight of each shared holding
- Shared Holdings
- 73ITOT holds 2487 · XLK holds 73
- Weight in Shared Holdings
- ITOT 29%·XLK 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
2414 of 2487 positions (70.7% of the fund) are not held by XLK. Showing the top 30 by weight.
Only in XLK
Every position in XLK is also held by ITOT, so it brings nothing the other fund doesn’t already own.
Sector Breakdown
| Sector | ITOT | XLK |
|---|---|---|
| Information Technology | 30.8% | 99.9% |
| Financials | 12.9% | 0.0% |
| Industrials | 10.2% | 0.0% |
| Health Care | 9.9% | 0.0% |
| Consumer Discretionary | 9.9% | 0.0% |
| Other Sectors | 26.0% | 0.0% |
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% |
| XLK | +4.9% | +30.9% | +43.5% | +30.7% | +20.3% | +24.4% | 0.42% |
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 XLK →
Shared Holdings(73)
The top 10 shared positions account for 77% of the overlap, led by NVDA, AAPL and MSFT.
 NVDANVIDIA Corp. COM | 6.69% | 14.35% | 6.69% |
|---|---|---|---|
 AAPLApple Inc. COM | 5.88% | 12.41% | 5.88% |
 MSFTMicrosoft Corp. COM | 4.34% | 10.04% | 4.34% |
 AVGOBroadcom Inc COM | 2.32% | 5.39% | 2.32% |
 MUMicron Technology Inc. COM | 0.60% | 3.70% | 0.60% |
 PLTRPalantir Technologies, Inc., Class A | 0.53% | 2.36% | 0.53% |
 AMDAdvanced Micro Devices Inc. COM | 0.52% | 4.11% | 0.52% |
 CSCOCisco Systems, Inc. COM | 0.48% | 3.15% | 0.48% |
 AMATApplied Materials Inc. COM | 0.43% | 2.77% | 0.43% |
 LRCXLam Research Corporation COM NEW | 0.42% | 2.53% | 0.42% |
 ORCLOracle Corp. COM | 0.39% | 1.61% | 0.39% |
 IBMInternational Business Machines Corp. COM | 0.36% | 1.45% | 0.36% |
 INTCIntel Corporation COM | 0.33% | 3.11% | 0.33% |
 KLACKLA Corp. COM NEW | 0.30% | 1.67% | 0.30% |
 TXNTexas Instruments Inc. COM | 0.28% | 1.67% | 0.28% |
 CRMSalesforce Inc. COM | 0.28% | 1.01% | 0.28% |
 ADIAnalog Devices Inc. COM | 0.25% | 1.22% | 0.25% |
 APHAmphenol Corporation CL A | 0.24% | 1.39% | 0.24% |
 QCOMQUALCOMM Inc. COM | 0.22% | 1.12% | 0.22% |
 PANWPalo Alto Networks Inc COM | 0.20% | 1.93% | 0.20% |
 ANETArista Networks Inc COM SHS | 0.20% | 1.31% | 0.20% |
 ACNAccenture PLC CLS'A'USD0.0000225 | 0.19% | 0.69% | 0.19% |
 INTUIntuit Inc COM | 0.19% | 0.59% | 0.19% |
 NOWServicenow Inc COM | 0.17% | 0.80% | 0.17% |
 GLWCorning Incorporated COM | 0.17% | 0.81% | 0.17% |
Frequently Asked Questions
How much do ITOT and XLK overlap?
ITOT and XLK overlap by 29.0% of portfolio weight. They share 73 holdings (ITOT holds 2487 positions and XLK holds 73), based on each fund's latest SEC-reported holdings.
Is it redundant to own both ITOT and XLK?
The two portfolios are 29.0% identical by weight. Owning both is not redundant. Most of each portfolio is distinct, so the funds can serve different roles.
What are the biggest shared holdings of ITOT and XLK?
The largest positions held by both funds are NVDA, AAPL, MSFT, AVGO and MU. Together the top 10 shared positions account for 77% of the total overlap.
What does ITOT own that XLK doesn't?
2414 positions (70.7% of ITOT) are unique to ITOT, led by AMZN, GOOGL and GOOG. In the other direction, 0 positions (0.0% of XLK) are unique to XLK.