iShares Core S&P Total U.S. Stock Market ETF (ITOT) and iShares U.S. Technology ETF (IYW) share 147 holdings, with roughly 41.7% of their portfolio weight overlapping.
Weight overlap
41.7%
Shared portfolio weight
Shared holdings
147
Securities in both funds
Funds
ITOT · IYW
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 IYW | Weight gap |
|---|---|---|---|
| NVDANVIDIA | 7.28% | 16.77% | 9.49%IYW |
| AAPLApple | 6.56% | 15.55% | 8.99%IYW |
| MSFTMicrosoft | 4.95% | 11.85% | 6.90%IYW |
| GOOGLAlphabet | 2.69% | 2.46% | 0.23%ITOT |
| METAMETA PLATFORMS CLASS A | 2.30% | 3.67% | 1.37%IYW |
| AVGOBROADCOM | 2.23% | 3.11% | 0.88%IYW |
| GOOGALPHABET CL C | 2.16% | 1.99% | 0.17%ITOT |
| MUMICRON TECHNOLOGY | 1.63% | 3.07% | 1.44%IYW |
| AMDADVANCED MICRO DEVICES | 1.38% | 3.31% | 1.93%IYW |
| INTCINTEL | 0.85% | 2.78% | 1.93%IYW |
| PLTRPALANTIR TECHNOLOGIES A | 0.59% | 2.05% | 1.46%IYW |
| LRCXLAM RESEARCH | 0.51% | 1.84% | 1.33%IYW |
| AMATAPPLIED MATERIALS | 0.50% | 1.80% | 1.30%IYW |
| PANWPALO ALTO NETWORKS | 0.43% | 1.50% | 1.07%IYW |
| CRWDCROWDSTRIKE HOLDINGS A | 0.35% | 1.25% | 0.90%IYW |
| SNDKSANDISK | 0.34% | 1.22% | 0.88%IYW |
| KLACKLA | 0.33% | 1.17% | 0.84%IYW |
| TXNTEXAS INSTRUMENTS | 0.33% | 1.18% | 0.85%IYW |
| ORCLORACLE | 0.32% | 1.14% | 0.82%IYW |
| MRVLMARVELL TECHNOLOGY | 0.30% | 1.08% | 0.78%IYW |
| IBMInternational Business Machines | 0.29% | 1.02% | 0.73%IYW |
| QCOMQUALCOMM | 0.28% | 0.98% | 0.70%IYW |
| APHAMPHENOL CL A | 0.27% | 0.97% | 0.70%IYW |
| CRMSALESFORCE | 0.26% | 0.91% | 0.65%IYW |
| ADIANALOG DEVICES | 0.25% | 0.89% | 0.64%IYW |
| DELLDELL TECHNOLOGIES C | 0.22% | 0.77% | 0.55%IYW |
| WDCWESTERN DIGITAL | 0.22% | 0.74% | 0.52%IYW |
| NOWSERVICENOW | 0.19% | 0.68% | 0.49%IYW |
| GLWCORNING | 0.16% | 0.58% | 0.42%IYW |
| NETCloudflare Class A | 0.16% | 0.55% | 0.39%IYW |
| SNOWSnowflake | 0.16% | 0.54% | 0.38%IYW |
| FTNTFORTINET | 0.15% | 0.52% | 0.37%IYW |
| ADBEADOBE | 0.13% | 0.45% | 0.32%IYW |
| CDNSCADENCE DESIGN SYS | 0.12% | 0.42% | 0.30%IYW |
| DDOGDATADOG CLASS A | 0.12% | 0.40% | 0.28%IYW |
| APPAPPLOVIN CLASS A | 0.11% | 0.36% | 0.25%IYW |
| HPEHEWLETT PACKARD ENTERPRISE | 0.11% | 0.40% | 0.29%IYW |
| SNPSSYNOPSYS | 0.11% | 0.38% | 0.27%IYW |
| INTUINTUIT | 0.10% | 0.35% | 0.25%IYW |
| DASHDOORDASH A | 0.09% | 0.34% | 0.25%IYW |
| MPWRMONOLITHIC POWER SYSTEMS | 0.09% | 0.30% | 0.21%IYW |
| ALABAstera Labs | 0.08% | 0.26% | 0.18%IYW |
| COHRCOHERENT | 0.08% | 0.26% | 0.18%IYW |
| MSTRMicroStrategy Class A | 0.08% | 0.27% | 0.19%IYW |
| TERTERADYNE | 0.08% | 0.29% | 0.21%IYW |
| ADSKAUTODESK | 0.06% | 0.21% | 0.15%IYW |
| FLEXFLEX LTD | 0.06% | 0.20% | 0.14%IYW |
| TWLOTwilio Class A | 0.06% | 0.21% | 0.15%IYW |
| XTSLABLK CSH FND TREASURY SL AGENCY | 0.06% | 0.18% | 0.12%IYW |
| CRWVCoreWeave Class A | 0.05% | 0.13% | 0.08%IYW |
| MCHPMICROCHIP TECHNOLOGY | 0.05% | 0.19% | 0.14%IYW |
| MDBMongoDB Class A | 0.05% | 0.16% | 0.11%IYW |
| NTAPNETAPP | 0.05% | 0.19% | 0.14%IYW |
| OKTAOkta | 0.05% | 0.16% | 0.11%IYW |
| ROPROPER TECHNOLOGIES | 0.05% | 0.17% | 0.12%IYW |
| WDAYWORKDAY CLASS A | 0.05% | 0.18% | 0.13%IYW |
| PPure Storage Class A | 0.05% | 0.18% | 0.13%IYW |
| CRDOCredo Technology Group Holding Ltd. | 0.04% | 0.16% | 0.12%IYW |
| HPQHP | 0.04% | 0.14% | 0.10%IYW |
| JBLJABIL | 0.04% | 0.15% | 0.11%IYW |
| ONON SEMICONDUCTOR | 0.04% | 0.14% | 0.10%IYW |
| TEAMAtlassian Class A | 0.04% | 0.15% | 0.11%IYW |
| CTSHCOGNIZANT TECH SOLUTIONS A | 0.03% | 0.12% | 0.09%IYW |
| ENTGEntegris | 0.03% | 0.11% | 0.08%IYW |
| FFIVF5 | 0.03% | 0.12% | 0.09%IYW |
| MTSIMACOM Technology Solutions Holdings | 0.03% | 0.09% | 0.06%IYW |
| QQNITY ELECTRONICS | 0.03% | 0.12% | 0.09%IYW |
| RDDTReddit Class A | 0.03% | 0.10% | 0.07%IYW |
| SMCISUPER MICRO COMPUTER | 0.03% | 0.11% | 0.08%IYW |
| SNXTD SYNNEX | 0.03% | 0.10% | 0.07%IYW |
| VRSNVERISIGN | 0.03% | 0.11% | 0.08%IYW |
| ZMZoom Video Communications Inc - Class A | 0.03% | 0.11% | 0.08%IYW |
| ZSZscaler | 0.03% | 0.11% | 0.08%IYW |
| AKAMAKAMAI TECHNOLOGIES | 0.02% | 0.07% | 0.05%IYW |
| ARWArrow Electronics | 0.02% | 0.06% | 0.04%IYW |
| BMNRBITMINE IMMERSION TECHNOLOGI | 0.02% | 0.08% | 0.06%IYW |
| CACICACI International Class A | 0.02% | 0.06% | 0.04%IYW |
| CDWCDW CORP/DE | 0.02% | 0.09% | 0.07%IYW |
| DOCNDigitalOcean Holdings | 0.02% | 0.07% | 0.05%IYW |
| DOCUDocusign Class A | 0.02% | 0.06% | 0.04%IYW |
| DTDynatrace | 0.02% | 0.08% | 0.06%IYW |
| FNFabrinet | 0.02% | 0.07% | 0.05%IYW |
| GDDYGODADDY CLASS A | 0.02% | 0.06% | 0.04%IYW |
| GENGEN DIGITAL | 0.02% | 0.06% | 0.04%IYW |
| GWREGuidewire Software | 0.02% | 0.06% | 0.04%IYW |
| IONQIonQ | 0.02% | 0.08% | 0.06%IYW |
| IOTSamsara Class A | 0.02% | 0.07% | 0.05%IYW |
| ITGARTNER | 0.02% | 0.06% | 0.04%IYW |
| LDOSLEIDOS HOLDINGS | 0.02% | 0.07% | 0.05%IYW |
| LSCCLattice Semiconductor | 0.02% | 0.08% | 0.06%IYW |
| MANHManhattan Associates | 0.02% | 0.06% | 0.04%IYW |
| NTNXNUTANIX A | 0.02% | 0.09% | 0.07%IYW |
| ONTOOnto Innovation | 0.02% | 0.07% | 0.05%IYW |
| PTC | 0.02% | 0.07% | 0.05%IYW |
| RBRKRubrik Class A | 0.02% | 0.08% | 0.06%IYW |
| RMBSRambus | 0.02% | 0.05% | 0.03%IYW |
| SANMSanmina | 0.02% | 0.05% | 0.03%IYW |
| SITMSiTime | 0.02% | 0.07% | 0.05%IYW |
| SMTCSemtech | 0.02% | 0.08% | 0.06%IYW |
| SSNCSS&C Technologies Holdings | 0.02% | 0.08% | 0.06%IYW |
| SWKSSKYWORKS SOLUTIONS | 0.02% | 0.06% | 0.04%IYW |
| TOSTToast Class A | 0.02% | 0.07% | 0.05%IYW |
| TTMITTM Technologies | 0.02% | 0.06% | 0.04%IYW |
| TYLTYLER TECHNOLOGIES | 0.02% | 0.06% | 0.04%IYW |
| UUnity Software | 0.02% | 0.07% | 0.05%IYW |
| AEISAdvanced Energy Industries | 0.01% | 0.05% | 0.04%IYW |
| ALGMAllegro MicroSystems | 0.01% | 0.02% | 0.01%IYW |
| AMKRAmkor Technology | 0.01% | 0.03% | 0.02%IYW |
| APLDApplied Digital | 0.01% | 0.03% | 0.02%IYW |
| APPFAppfolio | 0.01% | 0.02% | 0.01%IYW |
| AVTAvnet | 0.01% | 0.04% | 0.03%IYW |
| BSYBentley Systems Class B | 0.01% | 0.02% | 0.01%IYW |
| CARTMaplebear | 0.01% | 0.03% | 0.02%IYW |
| CCCCCC Intelligent Solutions Holdings | 0.01% | 0.02% | 0.01%IYW |
| CRUSCirrus Logic | 0.01% | 0.03% | 0.02%IYW |
| DBXDropbox Class A | 0.01% | 0.02% | 0.01%IYW |
| EPAMEPAM Systems | 0.01% | 0.03% | 0.02%IYW |
| ESTCElastic NV | 0.01% | 0.04% | 0.03%IYW |
| FIGFigma Class A | 0.01% | 0.02% | 0.01%IYW |
| FIGRFigure Technology Solutions Class A | 0.01% | 0.02% | 0.01%IYW |
| FORMFormFactor | 0.01% | 0.05% | 0.04%IYW |
| GTLBGitlab Class A | 0.01% | 0.04% | 0.03%IYW |
| HUBSHubSpot | 0.01% | 0.05% | 0.04%IYW |
| KBR | 0.01% | 0.02% | 0.01%IYW |
| MTCHMatch Group | 0.01% | 0.05% | 0.04%IYW |
| PATHUiPath Class A | 0.01% | 0.02% | 0.01%IYW |
| PAYCPaycom Software | 0.01% | 0.04% | 0.03%IYW |
| PCORProcore Technologies | 0.01% | 0.03% | 0.02%IYW |
| PINSPinterest Class A | 0.01% | 0.04% | 0.03%IYW |
| QRVOQorvo | 0.01% | 0.04% | 0.03%IYW |
| RNGRingCentral Class A | 0.01% | 0.03% | 0.02%IYW |
| SSentinelOne Class A | 0.01% | 0.04% | 0.03%IYW |
| SAICScience Applications International | 0.01% | 0.03% | 0.02%IYW |
| WULFTerawulf | 0.01% | 0.03% | 0.02%IYW |
| MBGLMOBILITY GLOBAL | 0.01% | 0.03% | 0.02%IYW |
| DLBDolby Laboratories Class A | 0.00% | 0.02% | 0.02%IYW |
| INGMIngram Micro Holding | 0.00% | 0.01% | 0.01%IYW |
| IPGPIPG Photonics | 0.00% | 0.01% | 0.01%IYW |
| KDKyndryl Holdings | 0.00% | 0.01% | 0.01%IYW |
| KVYOKlaviyo Class A | 0.00% | 0.01% | 0.01%IYW |
| NIQNIQ Global Intelligence | 0.00% | 0.00% | ≈ even |
| OLEDUniversal Display | 0.00% | 0.01% | 0.01%IYW |
| PEGAPegasystems | 0.00% | 0.01% | 0.01%IYW |
| PPLIPeople | 0.00% | 0.01% | 0.01%IYW |
| PSNParsons | 0.00% | 0.01% | 0.01%IYW |
| QNTQuantinuum Class A | 0.00% | 0.01% | 0.01%IYW |
| SAILSailPoint | 0.00% | 0.01% | 0.01%IYW |
1–20 of 147
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 IYW |
|---|---|---|
Technology | 38.3% | 90.6% |
Communication Services | 9.4% | 8.7% |
Financial Services | 11.6% | 0.2% |
Healthcare | 9.7% | 0.0% |
Consumer Cyclical | 8.7% | 0.4% |
Industrials | 8.8% | 0.1% |
Consumer Defensive | 4.2% | 0.0% |
Energy | 3.6% | 0.0% |
Real Estate | 2.1% | 0.0% |
Utilities | 1.9% | 0.0% |
Basic Materials | 1.8% | 0.0% |
Weights are of each fund’s classified equity holdings.
ITOT
IYW
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.