iShares Core S&P Total U.S. Stock Market ETF (ITOT) and State Street® Technology Select Sector SPDR® ETF (XLK) share 76 holdings, with roughly 31.6% of their portfolio weight overlapping.
Holdings as of: ITOT November 5, 2026 · XLK November 3, 2026.
Fund pages: ITOT (iShares Core S&P Total U.S. Stock Market ETF) · XLK (State Street® Technology Select Sector SPDR® ETF)
Weight overlap
31.6%
Shared portfolio weight
Shared holdings
76
Securities in both funds
Funds
ITOT · XLK
Compared side by side
Interactive charts, sector exposure, combined allocation, and the full overlap heatmap.
Every holding both funds own, ranked by shared exposure (how much of the position they hold in common). The weight gap shows which fund tilts more heavily into it.
| Holding | In ITOT | In XLK | Weight gap |
|---|---|---|---|
| AAPLAPPLE | 7.05% | 14.98% | 7.93%XLK |
| NVDANVIDIA | 6.17% | 15.47% | 9.30%XLK |
| MSFTMICROSOFT | 5.59% | 11.97% | 6.38%XLK |
| AVGOBROADCOM | 1.95% | 4.89% | 2.94%XLK |
| MUMICRON TECHNOLOGY | 1.04% | 3.96% | 2.92%XLK |
| AMDADVANCED MICRO DEVICES | 0.93% | 4.42% | 3.50%XLK |
| CSCOCISCO SYSTEMS | 0.53% | 2.54% | 2.01%XLK |
| PLTRPALANTIR TECHNOLOGIES A | 0.50% | 2.53% | 2.03%XLK |
| INTCINTEL | 0.36% | 1.88% | 1.52%XLK |
| PANWPALO ALTO NETWORKS | 0.36% | 1.79% | 1.43%XLK |
| TXNTEXAS INSTRUMENTS | 0.36% | 1.79% | 1.43%XLK |
| AMATAPPLIED MATERIALS | 0.36% | 1.90% | 1.54%XLK |
| IBMINTERNATIONAL BUSINESS MACHINES | 0.33% | 1.48% | 1.15%XLK |
| LRCXLAM RESEARCH | 0.33% | 1.81% | 1.48%XLK |
| ORCLORACLE | 0.32% | 1.37% | 1.05%XLK |
| CRWDCROWDSTRIKE HOLDINGS | 0.31% | 1.56% | 1.25%XLK |
| CRMSALESFORCE | 0.26% | 1.14% | 0.88%XLK |
| APHAMPHENOL | 0.25% | 1.30% | 1.05%XLK |
| ADIANALOG DEVICES | 0.25% | 1.28% | 1.03%XLK |
| KLACKLA | 0.24% | 1.28% | 1.04%XLK |
| QCOMQUALCOMM | 0.24% | 1.10% | 0.86%XLK |
| ANETARISTA NETWORKS | 0.23% | 1.11% | 0.88%XLK |
| ACNACCENTURE CL A | 0.23% | 0.98% | 0.75%XLK |
| SNDKSANDISK | 0.17% | 1.03% | 0.86%XLK |
| MRVLMARVELL TECHNOLOGY | 0.16% | 0.94% | 0.78%XLK |
| STXSEAGATE TECHNOLOGY HOLDINGS | 0.15% | 0.86% | 0.71%XLK |
| NOWSERVICENOW | 0.15% | 0.71% | 0.56%XLK |
| ADBEADOBE | 0.14% | 0.61% | 0.48%XLK |
| INTUINTUIT | 0.14% | 0.59% | 0.45%XLK |
| WDCWESTERN DIGITAL | 0.14% | 0.78% | 0.65%XLK |
| DELL | 0.13% | 0.77% | 0.64%XLK |
| CDNSCADENCE DESIGN SYS | 0.12% | 0.56% | 0.44%XLK |
| MSIMOTOROLA SOLUTIONS | 0.12% | 0.51% | 0.39%XLK |
| SNPSSYNOPSYS | 0.12% | 0.56% | 0.44%XLK |
| GLWCORNING | 0.12% | 0.63% | 0.51%XLK |
| FTNTFORTINET | 0.11% | 0.49% | 0.39%XLK |
| NXPINXP SEMICONDUCTORS NV | 0.09% | 0.42% | 0.33%XLK |
| TELTE CONNECTIVITY | 0.08% | 0.40% | 0.32%XLK |
| HPEHEWLETT PACKARD ENTERPRISE | 0.08% | 0.44% | 0.36%XLK |
| DDOGDATADOG CLASS A | 0.08% | 0.46% | 0.38%XLK |
| ADSKAUTODESK | 0.08% | 0.33% | 0.25%XLK |
| MPWRMONOLITHIC POWER SYSTEMS | 0.08% | 0.41% | 0.33%XLK |
| ROPROPER TECHNOLOGIES | 0.07% | 0.29% | 0.23%XLK |
| LITELUMENTUM HOLDINGS | 0.06% | 0.38% | 0.31%XLK |
| KEYSKEYSIGHT TECHNOLOGIES IN | 0.06% | 0.33% | 0.26%XLK |
| WDAYWORKDAY | 0.06% | 0.25% | 0.19%XLK |
| MCHPMICROCHIP TECHNOLOGY | 0.05% | 0.26% | 0.22%XLK |
| COHRCOHERENT | 0.05% | 0.25% | 0.21%XLK |
| NTAPNETAPP | 0.05% | 0.23% | 0.19%XLK |
| TERTERADYNE | 0.05% | 0.26% | 0.22%XLK |
| CIENCIENA | 0.05% | 0.27% | 0.22%XLK |
| PPure Storage Class A | 0.04% | 0.24% | 0.20%XLK |
| TWLOTwilio Class A | 0.04% | 0.14% | 0.09%XLK |
| CTSHCOGNIZANT TECH SOLUTIONS A | 0.04% | 0.18% | 0.14%XLK |
| OKTAOkta | 0.04% | 0.13% | 0.09%XLK |
| TDYTELEDYNE FLIR | 0.04% | 0.19% | 0.15%XLK |
| HPQHP | 0.04% | 0.16% | 0.12%XLK |
| VRSNVERISIGN | 0.04% | 0.16% | 0.12%XLK |
| JBLJABIL | 0.03% | 0.18% | 0.14%XLK |
| FLEXFLEX LTD | 0.03% | 0.20% | 0.17%XLK |
| ONON SEMICONDUCTOR | 0.03% | 0.18% | 0.14%XLK |
| QQNITY ELECTRONICS | 0.03% | 0.16% | 0.12%XLK |
| PTC | 0.03% | 0.13% | 0.10%XLK |
| FSLRFIRST SOLAR | 0.03% | 0.13% | 0.10%XLK |
| CDWCDW CORP/DE | 0.03% | 0.12% | 0.09%XLK |
| SWKSSKYWORKS SOLUTIONS | 0.03% | 0.12% | 0.10%XLK |
| FFIVF5 | 0.02% | 0.12% | 0.09%XLK |
| TYLTYLER TECHNOLOGIES | 0.02% | 0.10% | 0.07%XLK |
| GENGEN DIGITAL | 0.02% | 0.10% | 0.08%XLK |
| GDDYGODADDY CLASS A | 0.02% | 0.09% | 0.07%XLK |
| SMCISUPER MICRO COMPUTER | 0.02% | 0.11% | 0.09%XLK |
| ZBRAZEBRA TECHNOLOGIES CL A | 0.02% | 0.10% | 0.08%XLK |
| FICOFAIR ISAAC | 0.02% | 0.10% | 0.08%XLK |
| TRMBTRIMBLE | 0.02% | 0.10% | 0.08%XLK |
| ITGARTNER | 0.02% | 0.08% | 0.06%XLK |
| AKAMAKAMAI TECHNOLOGIES | 0.02% | 0.08% | 0.06%XLK |
1–20 of 76
How each fund's equity holdings break down by sector, side by side — the clearest read on where the two funds tilt differently.
| Sector | In ITOT | In XLK |
|---|---|---|
Technology | 34.3% | 100.0% |
Financial Services | 12.8% | 0.0% |
Healthcare | 11.1% | 0.0% |
Consumer Cyclical | 9.7% | 0.0% |
Industrials | 8.7% | 0.0% |
Communication Services | 8.2% | 0.0% |
Consumer Defensive | 5.0% | 0.0% |
Energy | 3.7% | 0.0% |
Real Estate | 2.4% | 0.0% |
Utilities | 2.1% | 0.0% |
Basic Materials | 2.0% | 0.0% |
Weights are of each fund’s classified equity holdings.
ITOT
XLK
Two ETFs overlap when they hold the same underlying securities. Holding both funds can leave you more concentrated than you think — you may own the same large companies twice, at a combined weight neither fund shows on its own. The weight overlap above is the share of portfolio weight the two funds hold in common: for every security both own, it counts only the smaller of the two weights (the slice you genuinely double up on). 0% means completely different books; 100% means effectively identical funds.