iShares U.S. Technology ETF (IYW) and State Street® SPDR® Portfolio S&P 500® ETF (SPYM) share 67 holdings, with roughly 42.4% of their portfolio weight overlapping.
Both funds' holdings are as of October 22, 2026.
Fund pages: IYW (iShares U.S. Technology ETF) · SPYM (State Street® SPDR® Portfolio S&P 500® ETF)
Weight overlap
42.4%
Shared portfolio weight
Shared holdings
67
Securities in both funds
Funds
IYW · SPYM
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 IYW | In SPYM | Weight gap |
|---|---|---|---|
| NVDANVIDIA | 16.85% | 7.77% | 9.08%IYW |
| AAPLAPPLE | 17.15% | 7.69% | 9.46%IYW |
| MSFTMICROSOFT | 13.19% | 5.85% | 7.34%IYW |
| GOOGLALPHABET | 2.48% | 2.88% | 0.40%SPYM |
| AVGOBROADCOM | 3.06% | 2.33% | 0.73%IYW |
| METAMETA PLATFORMS | 3.26% | 2.17% | 1.09%IYW |
| GOOGALPHABET CL C | 2.00% | 2.31% | 0.31%SPYM |
| MUMICRON TECHNOLOGY | 2.59% | 1.46% | 1.13%IYW |
| AMDADVANCED MICRO DEVICES | 2.84% | 1.25% | 1.59%IYW |
| PLTRPALANTIR TECHNOLOGIES A | 2.22% | 0.68% | 1.54%IYW |
| INTCINTEL | 1.99% | 0.64% | 1.35%IYW |
| AMATAPPLIED MATERIALS | 1.51% | 0.45% | 1.06%IYW |
| LRCXLAM RESEARCH | 1.46% | 0.44% | 1.02%IYW |
| PANWPALO ALTO NETWORKS | 1.46% | 0.44% | 1.02%IYW |
| TXNTEXAS INSTRUMENTS | 1.29% | 0.39% | 0.90%IYW |
| CRWDCROWDSTRIKE HOLDINGS | 1.22% | 0.37% | 0.85%IYW |
| IBMINTERNATIONAL BUSINESS MACHINES | 1.21% | 0.36% | 0.85%IYW |
| ORCLORACLE | 1.09% | 0.33% | 0.76%IYW |
| CRMSALESFORCE | 1.01% | 0.31% | 0.70%IYW |
| MRVLMARVELL TECHNOLOGY | 0.99% | 0.30% | 0.69%IYW |
| KLACKLA | 0.98% | 0.29% | 0.69%IYW |
| ADIANALOG DEVICES | 0.96% | 0.28% | 0.68%IYW |
| QCOMQUALCOMM | 0.93% | 0.28% | 0.65%IYW |
| SNDKSANDISK | 0.93% | 0.28% | 0.65%IYW |
| APHAMPHENOL | 0.91% | 0.27% | 0.64%IYW |
| NOWSERVICENOW | 0.82% | 0.25% | 0.57%IYW |
| DELL | 0.69% | 0.21% | 0.48%IYW |
| WDCWESTERN DIGITAL | 0.62% | 0.19% | 0.43%IYW |
| ADBEADOBE | 0.55% | 0.16% | 0.39%IYW |
| FTNTFORTINET | 0.53% | 0.16% | 0.37%IYW |
| GLWCORNING | 0.50% | 0.15% | 0.35%IYW |
| INTUINTUIT | 0.48% | 0.15% | 0.33%IYW |
| CDNSCADENCE DESIGN SYS | 0.43% | 0.13% | 0.30%IYW |
| DDOGDATADOG CLASS A | 0.43% | 0.13% | 0.30%IYW |
| SNPSSYNOPSYS | 0.40% | 0.12% | 0.28%IYW |
| APPAPPLOVIN | 0.32% | 0.11% | 0.21%IYW |
| DASHDOORDASH A | 0.35% | 0.11% | 0.24%IYW |
| HPEHEWLETT PACKARD ENTERPRISE | 0.37% | 0.11% | 0.26%IYW |
| MPWRMONOLITHIC POWER SYSTEMS | 0.28% | 0.09% | 0.19%IYW |
| ADSKAUTODESK | 0.27% | 0.08% | 0.19%IYW |
| ROPROPER TECHNOLOGIES | 0.22% | 0.07% | 0.15%IYW |
| TERTERADYNE | 0.25% | 0.07% | 0.18%IYW |
| COHRCOHERENT | 0.20% | 0.06% | 0.14%IYW |
| MCHPMICROCHIP TECHNOLOGY | 0.20% | 0.06% | 0.14%IYW |
| NTAPNETAPP | 0.21% | 0.06% | 0.15%IYW |
| TWLOTwilio Class A | 0.19% | 0.06% | 0.13%IYW |
| WDAYWORKDAY | 0.21% | 0.06% | 0.15%IYW |
| PPure Storage Class A | 0.19% | 0.06% | 0.13%IYW |
| CTSHCOGNIZANT TECH SOLUTIONS A | 0.17% | 0.05% | 0.12%IYW |
| HPQHP | 0.16% | 0.05% | 0.11%IYW |
| FFIVF5 | 0.13% | 0.04% | 0.09%IYW |
| FLEXFLEX LTD | 0.14% | 0.04% | 0.10%IYW |
| JBLJABIL | 0.14% | 0.04% | 0.10%IYW |
| ONON SEMICONDUCTOR | 0.15% | 0.04% | 0.11%IYW |
| VRSNVERISIGN | 0.13% | 0.04% | 0.09%IYW |
| CDWCDW CORP/DE | 0.11% | 0.03% | 0.08%IYW |
| LDOSLEIDOS | 0.09% | 0.03% | 0.06%IYW |
| PTC | 0.11% | 0.03% | 0.08%IYW |
| QQNITY ELECTRONICS | 0.12% | 0.03% | 0.09%IYW |
| RDDTReddit Class A | 0.10% | 0.03% | 0.07%IYW |
| SMCISUPER MICRO COMPUTER | 0.10% | 0.03% | 0.07%IYW |
| SWKSSKYWORKS SOLUTIONS | 0.10% | 0.03% | 0.07%IYW |
| AKAMAKAMAI TECHNOLOGIES | 0.07% | 0.02% | 0.05%IYW |
| GDDYGODADDY CLASS A | 0.07% | 0.02% | 0.05%IYW |
| GENGEN DIGITAL | 0.07% | 0.02% | 0.05%IYW |
| ITGARTNER | 0.08% | 0.02% | 0.06%IYW |
| TYLTYLER TECHNOLOGIES | 0.08% | 0.02% | 0.06%IYW |
1–20 of 67
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 IYW | In SPYM |
|---|---|---|
Technology | 91.1% | 38.3% |
Communication Services | 8.3% | 9.3% |
Financial Services | 0.1% | 11.9% |
Healthcare | 0.0% | 9.9% |
Consumer Cyclical | 0.4% | 9.1% |
Industrials | 0.1% | 7.5% |
Consumer Defensive | 0.0% | 4.9% |
Energy | 0.0% | 3.7% |
Utilities | 0.0% | 2.0% |
Real Estate | 0.0% | 1.8% |
Basic Materials | 0.0% | 1.6% |
Weights are of each fund’s classified equity holdings.
IYW
SPYM
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.