AI has been the dominant force in markets this year, and ETF flows are one place you can see it. Investors have poured billions into funds that offer exposure to the theme.
Here are the 10 that pulled in the most money in 2026, ranked by net inflows.
Roundhill Memory ETF (DRAM): $26.6 billion
The runaway leader, and it only started trading on April 2. DRAM offers concentrated, pure-play exposure to memory chipmakers, the corner of the market that has gone parabolic on demand for the high-bandwidth memory used in AI data centers.
Micron, SK Hynix and Samsung dominate the portfolio.
Roundhill spotted that no dedicated US-listed vehicle existed for the memory trade and built one. The money has poured in since, making DRAM the fastest-growing ETF on record.
Invesco NASDAQ 100 ETF (QQQM): $21.2 billion
You can quibble over whether QQQM counts as an AI ETF, but the Nasdaq-100 has always been a tech proxy, and the tech theme in vogue right now is AI.
QQQM is the cheaper, buy-and-hold-oriented version of the more famous QQQ, tracking the same 100 largest non-financial Nasdaq companies. The fund is dominated by massive tech companies, most of which are heavily involved in AI, including Nvidia, Microsoft, Alphabet, Amazon, Micron, and Broadcom.
Invesco QQQ Trust (QQQ): $15.2 billion
The original and more heavily traded version of the same fund, tracking the identical Nasdaq-100 index at a slightly higher fee.
iShares Semiconductor ETF (SOXX): $10.6 billion
One of the two big semiconductor funds. SOXX holds 30 US-listed chip stocks and applies strict caps that keep any single name from dominating, so Nvidia sits at a relatively modest weight near 9%.
That makes it a more evenly distributed way to own the chipmakers at the center of the AI boom.
iShares MSCI South Korea ETF (EWY): $9.9 billion
The least obvious entry, but EWY has effectively become a memory play. Samsung and SK Hynix, two of the three dominant makers of high-bandwidth memory, together make up 45% EWY.
Investors wanting exposure to the Korean memory giants have poured billions in, even though the fund also holds dozens of unrelated Korean stocks.
VanEck Semiconductor ETF (SMH): $6.3 billion
The other semiconductor heavyweight, and the more concentrated of the two. SMH lets its biggest holdings run, with Nvidia frequently near its 20% cap.
That willingness to lean into the largest winners has made SMH the stronger performer long-term, though it has underperformed SOXX this year.
First Trust Nasdaq Clean Edge Smart Grid Infrastructure Index Fund (GRID): $5.6 billion
A different angle on AI entirely. GRID holds the electrical-grid and power-infrastructure companies—names like Eaton, Schneider Electric, and Quanta Services —that stand to benefit from the enormous electricity demand AI data centers are creating.
As the buildout strains power grids, investors have increasingly treated grid infrastructure as an AI derivative.
iShares Expanded Tech-Software Sector ETF (IGV): $5 billion
The battleground of the group. Software is where a fierce argument over whether AI helps or hurts is raging. The bearish camp thinks AI will let companies build their own tools, thus hurting traditional software vendors—a fear that hammered the sector earlier this year.
The bullish camp thinks AI will strengthen software and expand its markets.
After selling off, IGV has since clawed back to roughly flat on the year as some of its top holdings, including Palo Alto Networks, Palantir and Microsoft, recovered. But it remains very much a contested bet on which side of AI disruption software lands.
Vanguard Information Technology ETF (VGT): $3.5 billion
Similar in spirit to QQQ but built on GICS sector definitions. VGT holds the information-technology sector, which captures chipmakers, hardware and software.
But the fund excludes some megacap names you find in QQQ, such as Amazon, Meta, and Alphabet.
iShares A.I. Innovation and Tech Active ETF (BAI): $2.5 billion
The only fund on the list that explicitly brands itself around AI. BAI is a thematic fund that holds companies tied to AI innovation.
In practice, its top holdings are largely the same semiconductor names you'll find scattered across the other funds on this list.