iShares Semiconductor ETF (SOXX) and State Street® Technology Select Sector SPDR® ETF (XLK) share 18 holdings, with roughly 39% of their portfolio weight overlapping.
Weight overlap
39%
Shared portfolio weight
Shared holdings
18
Securities in both funds
Funds
SOXX · 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 SOXX | In XLK | Weight gap |
|---|---|---|---|
| NVDANVIDIA | 8.93% | 14.19% | 5.26%XLK |
| AVGOBROADCOM | 7.82% | 5.31% | 2.51%SOXX |
| AMDADVANCED MICRO DEVICES | 7.83% | 3.97% | 3.86%SOXX |
| MUMICRON TECHNOLOGY | 8.18% | 3.63% | 4.55%SOXX |
| INTCINTEL | 5.52% | 3.04% | 2.48%SOXX |
| AMATAPPLIED MATERIALS | 4.97% | 2.74% | 2.23%SOXX |
| LRCXLAM RESEARCH | 4.43% | 2.56% | 1.87%SOXX |
| KLACKLA | 4.56% | 1.72% | 2.84%SOXX |
| TXNTEXAS INSTRUMENTS | 3.74% | 1.68% | 2.06%SOXX |
| ADIANALOG DEVICES | 3.85% | 1.24% | 2.61%SOXX |
| MRVLMARVELL TECHNOLOGY | 4.53% | 1.22% | 3.31%SOXX |
| QCOMQUALCOMM | 2.75% | 1.13% | 1.62%SOXX |
| MPWRMONOLITHIC POWER SYSTEMS | 3.36% | 0.45% | 2.91%SOXX |
| NXPINXP SEMICONDUCTORS NV | 3.02% | 0.39% | 2.63%SOXX |
| TERTERADYNE | 3.32% | 0.39% | 2.93%SOXX |
| MCHPMICROCHIP TECHNOLOGY | 2.15% | 0.29% | 1.86%SOXX |
| ONON SEMICONDUCTOR | 1.65% | 0.21% | 1.44%SOXX |
| SWKSSKYWORKS SOLUTIONS | 0.54% | 0.07% | 0.47%SOXX |
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 SOXX | In XLK |
|---|---|---|
Technology | 100.0% | 100.0% |
Weights are of each fund’s classified equity holdings.
SOXX
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.