If you’ve ever bought a sector ETF, energy, tech, financials, utilities, you probably thought you were getting the exact exposure to that sector of the S&P 500. Unfortunately, you may not have been exactly, not entirely. Today, I'll explain why and what TruSector ETFs do differently to fix it.

Why Investors Use Sector ETFs

So real quick, let's set the table. The S&P 500 is divided into 11 sectors based on something called GICS, Global Industry Classification Standards. Think of it as a map of the US economy. You have technology, utilities, consumer staples, real estate, consumer discretionary, and so on. These sector ETFs let investors make a play on one of those slices, going overweight if you're bullish or underweight if you're not. And there are two main reasons people use them.

The first is to express the view. If you think AI innovation and the build out is going to drive returns in the next 10 years, then you can be overweight into the tech sector. Or maybe you have a concern about inflation and the massive amount of debt raised by the US. You can go into a more defensive stance, investing in defensives such as healthcare or utilities.

The second case for sector investing is tax loss harvesting. And if you're sitting on a loss in a broad market fund and want to maintain market exposure, then you have to wait out the wash sale window. Instead of that, you can swap into a sector ETF and approximate the same exposure. It's a legitimate strategy that advisors use regularly.

And both of these use cases depending on one thing being true. That the sector ETF you are investing in actually tracks a sector it's supposed to track. And here's where things get a little interesting.

RIC Diversification Rules

So sector ETFs are subject to rule called RIC diversification. Here's a short version. A registered investment company, a RIC, which is what most ETFs are structured as, can't have a single holding exceed 25% of the portfolio. And the combined weight of these positions, over 5%, can’t exceed a total value of 50% of the entire fund.

So what happens? The fund has to cap the biggest names and redistribute that excess weight down to smaller companies, meaning companies that actually move the sector have less influence in the fund and smaller names end up with more weight than they've actually earned. And then the result is that the ETF can look significantly and meaningfully different than the S&P 500 sector that it was meant to target.

Spring 2024, Nvidia, the single most important stock in the technology sector. In the S&P 500 tech index in the spring of 2024 sat at about 21% of its weight in Nvidia. In the largest traditional tech sector ETF, only 5.7%.

Meanwhile, Microsoft and Apple sit at 22% each, not because the market says so, but because the cap requires it to be so. Three months later, you look at the fund and it was trailing the sector by five percentage points, which is a meaningful divergence when it comes to investors.

And that's not a small footnote either. If you're using a sector ETF to express a value on the biggest, most dominant companies in an industry, and the fund structurally can't provide exposure that reflects the industrial landscape, then you're not actually getting what you paid for.

And it doesn't just stop at technology. You start exploring other sectors where concentration is high and they all run the same risk. Financials, communication services, even consumer discretionary depend on that environment. It's like getting espresso when someone is watering it down.

So the tool that's meant to provide this precious exposure has a structural leak in it.

How TruSector ETFs Work

And this is exactly the problem that TruSector ETFs were designed to solve.

Here's how it works. TruSector ETFs hold the underlying sector ETF and then layer in individual stock positions on top to make up the difference, topping up on names that were artificially capped back to their actual index weight.

The result is true market cap weighted sector exposure that mirrors where the S&P 500 sector was actually going. No artificial caps, no redistributed weights to names that didn't earn it. Every company holds the weight that the market gave it. Investors get the real sector and not just a regulated approximation of it.

And now with all 11 GIC sectors live, you have a complete toolkit. Whether you're rotating between sectors, building a tactical overlay or tax loss harvesting within your portfolio, TruSector ETFs give you a clean, accurate exposure to those strategies that actually require it.

Because if you are making a bet on a sector, you should be getting the actual sector, not just a close proxy.

To explore the full TruSector lineup, make sure to check out VanEck.com.