This is an actively managed ETF in which ARK Invest selects stocks directly. Rather than tracking an index, it buys and sells companies that fit the disruptive innovation theme. The portfolio is spread across several innovative industries, including AI, autonomous driving, genomics, fintech, and cloud computing.

It suits aggressive investors with long-term conviction in high-growth, high-volatility innovation themes.

It is an ETF run with an active (actively managed) approach by ARK Invest.

The fund does not follow a specific benchmark index. Instead, the management team researches and selects companies it judges to fit the disruptive innovation theme. Position weights are adjusted frequently based on conviction levels, so stock concentration and turnover tend to be higher than in passive ETFs covering the same theme.

• Active stock selection based on the manager's in-house research
• A thematically concentrated portfolio spanning several innovative industries

Assets under management (AUM) stand at $6.0B, and the total expense ratio is 0.75% per year.

Compared with other ETFs in the same active innovation category, there are differences in the breadth of stock selection and in how each fund approaches industries, and fee levels also vary somewhat depending on the investment strategy.

As a growth-stock fund focused on innovation themes, it has repeatedly experienced large swings in response to changes in interest rates and investor appetite for growth stocks. It is clearly driven more by the long-term cycle of the overall theme than by short-term trends.

Fund flows react sensitively to shifts in the market environment: inflows expand when investor sentiment toward innovation themes improves, while outflow pressure grows when growth stocks as a whole come under strain.

Its strength is growth potential across the innovation economy, but because it is actively managed, high volatility and concentration risk are its weaknesses.

For comparison within the same active innovation strategy category, there are rotation-style active ETFs such as DYNF and THRO, small- and mid-cap active ETFs such as JMEE and PSC, and private-public crossover ETFs such as XOVR. These differ in the industries they access and in how they select stocks. Meanwhile, ARK also offers other theme-specific ETFs: ARKQ, focused on autonomous driving and robotics; ARKW, on the next-generation internet theme; ARKG, on genomic innovation; and ARKF, on fintech. Investors can narrow their choices according to the industries that interest them. For those who want the opposite position, SARK, designed to move in the opposite direction of ARKK, is also worth a look.

Here are the points to review before investing in ARKK. It is worth checking in advance the high volatility, stock concentration, and reliance on manager judgment that are typical of active management.

When appetite for growth stocks weakens or interest rates rise, short-term declines can be steep, and the high concentration in a small number of stocks can also bring volatility driven by company-specific issues.

This is an active ETF suited to investors who hold long-term conviction in innovation themes and can tolerate high volatility. Those who prioritize stability are advised to pair it with a more diversified core holding.