What is active share on an ETF?
Active share is the share of a fund that is not the index, by weight. A fund at 85% active share has 15% of its money in index names at index weights. Across the thematic ETFs ETFIQ tracks, the typical fund holds 32% of its weight in stocks the S&P 500 already owns.
ETFIQ computes it from each fund's latest filed holdings against the S&P 500 book, matching securities on CUSIP, then ISIN, then ticker, then a normalized name. Overlap is the sum of the smaller weight of every security the two hold in common. Active share is one hundred minus that.
The number matters because you buy a thematic fund for the part that is different. If most of the fund is index names you already own, the theme is a smaller bet than the name suggests, and you pay the fee on the whole fund, not just the differing part.
ETFIQ also shows the fee divided by the share that differs. That is the price of the active decision.
On ETFIQ today
Answered from ETFIQ data as of Oct 27, 2026.| Ticker | Fund | Theme | In the S&P 500 | Active share | Fee | Fee for the differing part |
|---|---|---|---|---|---|---|
| PDBA | Invesco Agriculture Commodity Strategy No K-1 ETF | Agriculture | 0.0% | 100.0% | 0.59% | 0.59% |
| DRAI | Draco Evolution AI ETF | Artificial intelligence | 0.0% | 100.0% | 1.32% | 1.32% |
| DRGN | Themes China Generative Artificial Intelligence ETF | Artificial intelligence | 0.0% | 100.0% | 0.39% | 0.39% |
| KAIT | KraneShares Asia AI Technology ETF | Artificial intelligence | 0.0% | 100.0% | 1.00% | 1.00% |
| BBC | Virtus Biotech Clinical Trials ETF | Biotech | 0.0% | 100.0% | 0.65% | 0.65% |
| GXDW | Global X Dorsey Wright Thematic ETF | Broad innovation and megatrends | 0.0% | 100.0% | 0.50% | 0.50% |
| LFSC | F/m Emerald Life Sciences Innovation ETF | Broad innovation and megatrends | 0.0% | 100.0% | 0.54% | 0.54% |
| MJ | Amplify Alternative Harvest ETF | Cannabis | 0.0% | 100.0% | 0.75% | 0.75% |
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ETFIQ, What is active share on an ETF?, data as of Oct 27, 2026. https://etfiq.com/questions/what-is-active-share
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