This is an actively managed ETF with a fund-of-funds structure. It holds sector ETFs representing the 11 S&P 500 sectors and actively adjusts sector weights based on relative strength and valuation analysis. It also writes covered calls on the ETFs it holds through an options strategy, seeking additional income.

It suits medium- to long-term investors who want to outperform the S&P 500 while reducing losses during market downturns.

Main Management launched the ETF in 2019, and it follows an active management approach.

The fund regularly evaluates relative strength and valuation by sector, increasing weights in favored sectors and reducing exposure to weaker ones. It also sells covered call derivative contracts on a portion of its sector ETF holdings to earn additional option premium income.

• A hybrid structure combining sector rotation and a covered call options strategy
• A fund-of-funds approach that directly holds representative sector ETFs

Assets under management (AUM) stand at $2.9B, and the total expense ratio is 0.69% per year.

Fees are somewhat higher than those of passive sector ETFs in similar categories. This reflects the costs of active management and options strategy execution, so it is important to check long-term performance to see whether excess returns or downside protection offset them.

By the nature of a sector rotation strategy, it tends to work relatively well when growth sectors (technology, communication services, and others) are strong. It is designed to limit losses in downturns by moving ahead of time into defensive sectors (consumer staples, utilities, and others). The covered call overlay is also expected to provide some cushion during declines.

Once AUM reached a certain level, inflows have been mainly long-term holding money. Demand comes more from investors using it as a satellite holding in a core-satellite portfolio than from short-term arbitrage trading.

Dynamic sector allocation and option premiums are its strengths, while active management fees and the risk of sector misjudgment are its weaknesses.

You can compare sector allocation approaches with the similar ETFs shown in the table (DRAM, AVRE, VOLT, CANC, OZEM). Direct alternatives include RSP, the equal-weight S&P 500 ETF, and RSPG, which holds each sector at equal weight. If you want simple sector exposure without covered calls, you could also consider combining individual sector ETFs such as XLK, XLV, and XLE yourself.

These are the key items to review before investing in SECT. Because it is actively managed, unlike a passive fund, you should focus on the quality of its sector rotation judgment, the effect of its covered calls, and performance relative to cost.

Sector rotation misjudgment and the upside cap from covered calls are the main risks. In bull markets, performance may be limited compared with passive ETFs, and because fees are high, you should keep checking whether excess returns offset the fee difference.

With its distinctive structure combining sector rotation and covered calls, it can be an option for investors who want more volatility management than simple passive investing offers. However, given the high fee level, it is important to keep monitoring long-term performance.