This is an actively managed ETF that invests in a small number of high-conviction stocks within US growth equities. Rather than tracking a specific index, it selectively holds positions sorted into industry-leading growth companies, steady growth companies, and emerging growth companies.

It seeks excess returns through more active stock selection than passive index funds, making it suitable for growth investors willing to tolerate the volatility of a concentrated portfolio.

It is an ETF run with an active management approach by Thornburg Investment Management.

The fund manages US growth stocks with a high-conviction approach that concentrates weight in a small number of holdings. It selects across three groups: industry-leading growth companies, companies with steady earnings growth, and emerging growth companies at a relatively early stage. Rather than mechanically replicating an index, it builds the portfolio based on the management team's judgment.

• High-conviction concentrated management without index tracking
• A three-tier selection approach based on growth stage

Assets under management (AUM) stand at $210.1M, and the total expense ratio is 0.79% per year.

The fee burden is on the higher side compared with passive growth ETFs such as VUG and IWF, but the fund aims for differentiated performance through the management team's active selection.

The fund moves broadly in line with growth stocks overall, but because of its concentrated portfolio, returns tend to depend heavily on the performance of a few holdings. Depending on the market environment, price swings can be larger than those of broad index funds.

For active growth ETFs, fund flows split according to management performance and market appetite for growth stocks. Flows tend to react sensitively to shifts in overall growth-stock sentiment, such as interest rate moves and earnings seasons.

Its strength is the potential for excess returns through active stock selection, while its weaknesses are a higher fee and the volatility that comes with concentration.

VUG, IWF, and SCHG, shown in the table, are low-cost passive ETFs that hold a broad range of large US growth stocks, and they differ greatly from the actively managed TFGZ in cost and management style. If cost is the priority, you can consider VUG and SCHG, the low-cost passive alternatives in the same growth category, and if you want broad diversification, you can also look at IWF. Given the active, concentrated nature of TFGZ, position sizing should be adjusted to your own risk tolerance.

Here are the points to review before investing in TFGZ. As an actively managed, concentrated ETF, it is important to check costs, concentration, and reliance on management in advance, and to consider its suitability in light of your investment style and your allocation to growth stocks.

The concentrated portfolio and the higher fee are the key risks. In a growth-stock downturn, declines can be steeper than with broad index funds, and if management performance falls short of expectations, the cost burden can become more conspicuous.

This is an active ETF worth considering for investors who expect excess returns from active growth-stock selection. If cost and diversification are the priority, low-cost passive growth ETFs such as VUG and SCHG fit better, while those who prefer active selection and concentration can consider this ETF.