DRAM vs XLK ETF holdings comparison
Roundhill Memory ETF (DRAM) · Technology Select Sector SPDR ETF (XLK)
DRAM and XLK overlap by 7.8% by portfolio weight. The remaining 92.2 percentage points are not counted as shared holdings weight by this calculation. They share 4 stocks; the largest shared position is Micron Technology Inc (MU), contributing 3.99% to the overlap.
The holdings dates differ. This can slightly understate overlap for funds tracking similar indexes.
What this means
DRAM and XLK share a smaller portion of their portfolio weight in the same underlying stocks. OverlapCheck labels this "low holdings overlap" using house ranges of 70% or more, 30% to under 70%, and under 30%. These descriptive ranges are not industry standards or investment guidance. Holdings overlap does not measure correlation, volatility, geographic or factor exposure, fees, or suitability.
Overlap by weight sums the smaller of the two funds' weights for every stock they both hold. It answers "how much of my money is in the same stocks either way?" See methodology.
This comparison covers normalized equity positions represented in the dataset. Cash, derivatives, options, structured notes, and other non-equity assets are not included, so the result is not a complete comparison of every asset or risk in either fund.
Top shared holdings
| Company | Ticker | in DRAM | in XLK |
|---|---|---|---|
| Micron Technology Inc | MU | 25.10% | 3.99% |
| Sandisk Corp | SNDK | 4.37% | 1.48% |
| Seagate Technology Holdings Plc | STX | 4.70% | 1.24% |
| Western Digital Corp | WDC | 4.03% | 1.05% |
Holdings only in DRAM or XLK
DRAM has 12 fund-only positions representing approximately 61.9 percentage points of reported exposure; XLK has 69 fund-only positions representing approximately 92.2 percentage points of reported exposure. These are positions whose normalized security identifiers appear in one issuer file but not the other.
Largest positions only in DRAM
| Company | Ticker | Weight |
|---|---|---|
| Samsung Electronics Co Ltd | 005930 | 25.32% |
| Sk Hynix Inc | 000660 | 21.93% |
| Cxmt Corporation | N/A | 4.71% |
| Kioxia Holdings Corp | 285A | 3.17% |
| Nanya Technology Corp | 2408 | 2.66% |
| Winbond Electronics Corp | 2344 | 1.25% |
| Gigadevice Semiconductor Inc | 603986 | 1.12% |
| Phison Electronics Corp | 8299 | 0.72% |
| Sk Hynix Inc | SKHY | 0.52% |
| Macronix International Co Ltd | 2337 | 0.36% |
Largest positions only in XLK
| Company | Ticker | Weight |
|---|---|---|
| Nvidia Corp | NVDA | 14.22% |
| Apple Inc | AAPL | 12.54% |
| Microsoft Corp | MSFT | 10.07% |
| Broadcom Inc | AVGO | 4.66% |
| Advanced Micro Devices | AMD | 4.10% |
| Cisco Systems Inc | CSCO | 2.95% |
| Intel Corp | INTC | 2.91% |
| Palantir Technologies Inc A | PLTR | 2.67% |
| Lam Research Corp | LRCX | 2.65% |
| Applied Materials Inc | AMAT | 2.56% |
FAQ
How much do DRAM and XLK overlap?
DRAM and XLK have 7.8% overlap by weight, sharing 4 equity positions (out of 16 in DRAM and 73 in XLK). The official holdings files used are dated 2026-08-27 for DRAM and 2026-08-25 for XLK.
What does 7.8% overlap mean?
DRAM and XLK share a smaller portion of their portfolio weight in the same underlying stocks. OverlapCheck labels this "low holdings overlap" using house ranges of 70% or more, 30% to under 70%, and under 30%. These descriptive ranges are not industry standards or investment guidance. Holdings overlap does not measure correlation, volatility, geographic or factor exposure, fees, or suitability.
Which stocks do DRAM and XLK both hold?
The largest shared positions are Micron Technology Inc, Sandisk Corp, Seagate Technology Holdings Plc, Western Digital Corp. The top shared holdings with weights in each fund are shown on this page.
What holdings are different between DRAM and XLK?
DRAM has 12 positions not found in XLK, while XLK has 69 positions not found in DRAM. The largest fund-only positions and their weights are shown on this page.