F/m 10-Year Investment Grade Corporate Bond ETF (ZTEN)

The F/m 10-Year Investment Grade Corporate Bond ETF, trading as ZTEN, represents the evolution of corporate-bond investing from a terrain dominated by individual bond selection toward a diversified, exchange-traded approach. The fund invests in a portfolio of U.S. corporate bonds issued by companies with strong credit ratings — what the market calls “investment grade” — with an average maturity centred around 10 years.

The rise of corporate-bond ETFs in fixed-income markets

Before the late 2000s, corporate-bond investing was largely the domain of professional portfolio managers, insurance companies, and high-net-worth individuals buying individual bonds. The corporate-bond market itself was less transparent than the equity market, prices were negotiated rather than posted on an exchange, and picking individual bond names required material expertise.

The financial crisis of 2008 and the subsequent expansion of central-bank liquidity created both demand and opportunity for a different approach. Investors seeking yield beyond what Treasury bonds offered turned to corporate debt. At the same time, the regulatory framework around ETFs had matured enough to permit large, liquid corporate-bond funds. ZTEN and its peers emerged in this environment as a way to package exposure to a broad basket of corporate borrowers — de-risking the concentration inherent in owning a handful of individual bond names.

What investment grade means and who borrows at this tier

Investment-grade corporate bonds are debt issued by companies with strong, stable businesses and reliable access to capital markets. The rating agencies — Standard and Poor’s, Moody’s, and Fitch — assign ratings like AAA, AA, A, and BBB to these borrowers, signalling that default risk is manageable. (Below BBB lies “high yield” or “junk” territory, a different category altogether.) Companies that carry investment-grade ratings include blue-chip industrials, banks, utilities, and mature tech firms — the backbone of the economy.

The spread between what companies pay on their bonds and what the U.S. Treasury pays on similar-maturity debt (called the “credit spread”) varies with market conditions and the specific issuer. In quiet markets, a high-quality A-rated company might borrow at a spread of 1 to 2 percentage points above Treasury rates; in stressed markets, that spread widens considerably. Investors in ZTEN capture that spread as they hold the bonds to maturity or trade them.

The 10-year maturity sweet spot

A 10-year average maturity positions ZTEN in the middle of the bond curve — longer than short-term money-market funds but shorter than 20 or 30-year bonds, which are far more sensitive to interest-rate moves. This middle ground means ZTEN carries meaningful duration risk (the fund’s value will decline if rates rise), but not the extreme sensitivity of long-duration bond funds. A 1 per cent rise in yield might cause ZTEN to lose 8 to 10 per cent in value, whereas a long-bond fund would lose 15 to 20 per cent or more.

This positioning made the fund particularly relevant during the low-rate environment of the 2010s and early 2020s, when investors chased yield and were willing to accept 10-year maturity risk. As interest rates rose in 2022 and beyond, the fund faced the mechanical price declines inherent in longer-duration holdings, though the shorter maturity relative to long-bond alternatives limited the damage.

Holdings and portfolio construction

ZTEN holds hundreds of individual corporate bond issues — new issuance from major borrowers, legacy bonds issued in prior years that still trade actively, and a mix of sectors. Financial services firms, energy companies, utilities, healthcare providers, and industrials typically dominate the portfolio by weight. The fund’s prospectus discloses the sector and issuer breakdowns, showing investors where their capital is concentrated.

The fund is not equally weighted; it weights holdings by the size of the outstanding bond issue (so a large bond from a major corporation carries more weight than a smaller issue from a less-known borrower). This approach mimics market-value weighting and is easier to implement mechanically than equal-weighting schemes, which would require constant rebalancing.

Interest-rate risk and spread risk

ZTEN faces two main risks. Interest-rate risk is the mechanical decline in bond prices when yields rise — an unavoidable cost of investing in longer-duration instruments. Spread risk is the danger that corporate bond credit spreads widen (borrowing costs rise relative to Treasury rates) in a recession or credit crunch, causing even bonds whose issuers do not default to lose value. In 2020, for instance, corporate-bond spreads spiked during the pandemic shock, even as the underlying businesses often remained solvent.

A third, smaller risk is issuer-specific default — the chance that a company borrowed in the bond market and then encountered distress. In a diversified portfolio like ZTEN, a single default affects only a small portion of the fund, but it is a real possibility. The fund’s investment-grade focus reduces this risk significantly compared to high-yield alternatives.

Tax and portfolio role

ZTEN is suitable for taxable investors seeking diversified corporate-credit exposure without the complexity of bond trading or the concentration of individual-name selection. Because the fund holds so many issuers and issues, credit research requirements fall away; the fund’s sponsor handles that. The expense ratio is modest — typical for a bond ETF — and the fund’s daily liquidity on the exchange beats the over-the-counter corporate-bond market.

In a portfolio, ZTEN often serves as a modest-yield, moderate-risk counterweight to equities, offering more income than Treasury bonds while remaining investment grade. For conservative portfolios, ZTEN plus Treasury bonds create a diversified fixed-income foundation; for return-seeking portfolios, ZTEN can supplement equity holdings with some ballast.