The Cheapest Robotics ETFs, Ranked by Expense Ratio

Fees are one of the few things you know for certain before you buy an ETF. Returns are unpredictable. Fees are not. Every robotics fund takes its expense ratio out of your money every year, whether the fund goes up 40% or down 30%.

Across the 25 robotics funds we track, the average expense ratio is 0.67%. That is noticeably higher than a broad stock market index fund, which is normal for thematic ETFs. But within robotics the spread is wide: the cheapest fund charges less than half of what the most expensive non-leveraged funds charge. This guide ranks every fund by cost, shows what the differences add up to, and covers the trading costs that the expense ratio does not capture.

Every robotics ETF, cheapest first

This ranking leaves out leveraged funds, which are short-term trading tools with a different cost structure. They appear separately at the end.

The cheapest fund on the list is $BOTT at 0.35% a year. Several of the newest humanoid funds also come in at the low end, as issuers compete for assets in a crowded category.

How an expense ratio actually works

An expense ratio is the percentage of your investment the fund keeps each year to cover management, index licensing, trading, legal and administrative costs. You never pay it directly. Instead, the fund deducts a tiny slice of its assets every day, so your return is simply a bit lower than the return of the stocks inside the fund.

A 0.50% expense ratio means $50 a year for every $10,000 invested. The math is simple, but because the fee is invisible it is easy to ignore. That is exactly why it is worth a closer look.

What the fee gap really costs over time

In a single year, the difference between a cheap and an expensive robotics fund is small: about $35 versus $95 on a $10,000 position. Over long periods, compounding turns small yearly differences into large dollar gaps, because the money lost to fees also stops growing.

These charts use a steady hypothetical 7% yearly return before fees to isolate the effect of the fee itself. Real robotics funds are far more volatile than that, but the fee drag works the same way regardless of the path returns take.

Fee tiers in the robotics category

Low cost: under 0.50%

This group includes several newer humanoid funds and $IBOT from VanEck at 0.47%. Index-based funds dominate this tier. Low fees here are partly a marketing tool: new funds price aggressively to attract their first investors.

Middle: 0.50% to 0.70%

Many established funds sit here, including $BOTZ at 0.68%, $FBOT at 0.50%, $IQM at 0.50% and $KOID at 0.69%. This is roughly where the category average falls.

Higher cost: above 0.70%

Specialized and actively managed funds tend to charge more. $ROBO at 0.95% is the oldest fund in the category and one of the more expensive. $ARKQ at 0.75% is actively managed by ARK. Higher fees can be worth it if the strategy is exactly what you want, but they raise the bar the fund has to clear.

Leveraged: above 1%

$UBOT charges 1.32%. Leveraged funds also carry borrowing and swap costs that do not show up in the headline fee. They are built for short-term trading, not long-term holding.

The hidden costs the expense ratio does not show

Bid-ask spreads. Every time you buy or sell an ETF, you pay the gap between the buying and selling price. For large, heavily traded funds like $BOTZ, this is usually tiny. For a new fund with only a few million dollars in assets, the spread can be several times wider, and on a single trade it can cost more than a full year of fee savings.

Premiums and discounts. An ETF's market price can drift slightly above or below the value of its holdings, especially for small funds or funds that hold foreign stocks that trade while US markets are closed.

Fund closures. Small funds that fail to attract assets sometimes close. When that happens, the fund sells its holdings and returns cash, which can create a taxable gain and forces you to find a new fund.

Cheapest fund vs. best fit

The cheapest fund is not automatically the right one. Think about the decision in this order:

1. What do you want to own? Broad automation, humanoids, AI and robotics, autonomy or a mix. See our guide to robotics ETF types.
2. Which funds actually hold that? Check the top holdings on each issuer's site.
3. Is the fund big enough to trade easily? Look at assets and spreads.
4. Then compare fees among the funds that pass the first three steps.

Used this way, the expense ratio becomes a powerful tiebreaker instead of a misleading shortcut.

The bottom line

Robotics ETF fees range widely, and over long holding periods the differences add up to real money. But fees work best as the last filter, not the first. Start with the strategy you want, confirm the fund is large and liquid enough, and then favor the lower-cost option. Sort every fund by fee, assets and yield on the full robotics ETF table, or line up two funds on the compare page. Nothing here is a recommendation to buy or sell.