Sector ETFs Exposed: The Hidden Concentration Problem

Investors often turn to sector ETFs as a way to gain exposure to specific industries. However, many of these funds are not as diversified as they seem.

A study by State Street found that most market-cap-weighted sector ETFs have a concentration problem, with just a few stocks dominating the portfolio. The top three holdings in each sector's ETF often make up over 30% of the fund's total weight.

The Consumer Discretionary Select Sector SPDR ETF (XLY) is one example. Amazon, Tesla, and Home Depot account for nearly 45% of its holdings, with Amazon and Tesla alone making up around 40%. The Communication Services Select Sector SPDR ETF (XLC) also has a high concentration in two stocks: Meta Platforms and Alphabet.

Industry observers note that these funds are not providing the true sector exposure investors may be looking for. An alternative is Invesco's suite of equal-weighted sector ETFs, which offer a more diversified basket of companies without the concentration problem found in market-cap-weighted funds.