BlackRock’s iShares unit is top of the heap in the world of exchange-traded funds, yet the company finds itself playing catch-up of sorts in a category where other fund providers already have a big head start.

The iShares Robotics & Artificial Intelligence ETF (IRBO) that launched on Thursday from the world’s largest ETF provider joins a passel of existing funds tapped into these two growing and dynamic 21st-century industries.

The fund tracks the NYSE FactSet Global Robotics and Artificial Intelligence Index, which employs a rules-based approach to select companies from one of 43 developed and emerging-market countries engaged in one of the 22 robotics and AI-related sub-industries as defined by financial data provider FactSet. The fund’s holdings are equal-weighted.

IRBO begins trading with a cash position equaling 3.4 percent of the portfolio, but beyond that the fund’s top holding include Line Corp., a Japanese information technology company; Elan Microelectronics Corp., a Taiwanese info tech outfit and iRobot, a U.S. maker of robotic household products. Their weightings range from 1.34 percent to 1.28 percent of the portfolio. Other companies in the top 10 include Netflix Inc., Twitter Inc. and Facebook Inc.

The U.S. by far is the largest single-country weighting at 54.6 percent of the portfolio, followed by Japan (11.4 percent) and China (10.2 percent).

IRBOs’ expense ratio of 0.47 percent equals that of the iShares Exponential Technologies ETF (XT), which has $2.2 billion in assets under management. That fund, which launched in 2015, is a play on investing in transformative, or exponential technologies.

XT’s overall mandate is broadly defined, and a breakdown of the fund’s sector and industry exposure by XTF.com doesn’t paint a picture that screams “robotics and artificial intelligence.” Nonetheless, the fund is included in ETFdb’s category ranking of AI-related ETFs. Then again, that list also includes the likes of the iShares Global Tech ETF (IXN) and other broad-based funds such as the biggest tech fund of them all—the $65 billion Invesco QQQ (QQQ) product.

Elsewhere, a number of specifically focused robotics and AI-themed ETFs of recent vintage have been a hit with investors. They include the Global X Robotics & Artificial Intelligence Thematic ETF (BOTZ), with 2.3 billion in assets, and the ROBO Global Robotics and Automation Index ETF (ROBO), with $2.1 billion in assets.

Beyond that, BlackRock is no stranger to this kind of stuff. In March, it launched its suite of “iShares Evolved” sector ETFs with portfolios chosen by machine learning statistical analysis. Assets under management in these funds range from $4.7 million to $5.3 million, indicating they need more time to catch on with investors.

It’s more likely the newly launched iShares Robotics & Artificial Intelligence ETF will be quicker out of the gate in terms of asset gathering.