ETF comparison
IBB vs XLK
Healthcare vs Technology.
iShares Biotechnology ETF · State Street Technology Select Sector SPDR ETF
Holdings overlap
0 positions appear in both funds. Buying equal dollars of IBB and XLK would leave roughly 0.0% of each dollar exposed to the same underlying securities.
Unmatched is the part of a fund's weight the other fund doesn't match: names only it holds, plus any extra weight it puts in names both funds hold.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — see what we don't score for why.
Cost difference
XLK is 36 bps cheaper than IBB. On a $100,000 position that's about $360/yr more in fees for IBB.
Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open the cost calculator pre-filled with IBB vs XLK.
Top shared holdings
0 shared in totalNo shared holdings between these funds.
Only in IBB
248 total- Vertex Pharmaceuticals, Inc. 8.08%
- Amgen, Inc. 7.83%
- Gilead Sciences, Inc. 6.84%
- Regeneron Pharmaceuticals, Inc. 4.91%
- Argenx SE 3.76%
- Alnylam Pharmaceuticals, Inc. 3.12%
- Natera, Inc. 2.89%
- Revolution Medicines, Inc. 2.78%
- Biogen, Inc. 2.47%
- Illumina, Inc. 2.07%
Only in XLK
74 total- NVIDIA Corp 14.65%
- Apple Inc 12.85%
- Microsoft Corp 8.38%
- Micron Technology Inc 5.42%
- Broadcom Inc 5.41%
- Advanced Micro Devices Inc 5.28%
- Intel Corp 3.68%
- Applied Materials Inc 3.20%
- Lam Research Corp 3.02%
- Cisco Systems Inc 2.58%
Related comparisons
More comparisons with IBB
- IBB vs XBI · State Street SPDR S&P Biotech ETF 41.6%
- IBB vs VHT · Vanguard Health Care Index Fund ETF Shares 17.6%
- IBB vs FHLC · Fidelity MSCI Health Care Index ETF 17.6%
- IBB vs XLV · State Street Health Care Select Sector SPDR ETF 11.1%
- IBB vs IXJ · iShares Global Healthcare ETF 8.3%
- IBB vs IHF · iShares U.S. Healthcare Providers ETF 0.1%
More comparisons with XLK
- XLK vs IDU · iShares U.S. Utilities ETF 0.0%
- XLK vs IFRA · iShares U.S. Infrastructure ETF 0.0%
- XLK vs IGE · iShares North American Natural Resources ETF 0.0%
- XLK vs IGF · iShares Global Infrastructure ETF 0.0%
- XLK vs IHF · iShares U.S. Healthcare Providers ETF 0.0%
- XLK vs IHI · iShares U.S. Medical Devices ETF 0.0%
Percentages are holdings overlap with the named fund.
Open IBB or XLK at a brokerage
Both funds trade commission-free at major US brokerages.
Affiliate links — opening an account through these earns PlainIndex a one-time referral. Scoring is computed before any affiliate consideration; see our methodology and funding disclosure.
Holdings overlap is the sum of min(weight_a, weight_b) over positions
matched on ISIN (CUSIP fallback). Methodology: see
/methodology/.
Comparing two funds doesn't endorse swapping one for the other. Tax-lot history, account type, and personal goals matter — PlainIndex publishes data and methodology, not investment advice.