ZMID.U ETF: BMO U.S. mid-cap holdings and MER

Short answer: ZMID.U is BMO’s USD-denominated S&P U.S. Mid Cap 400 tracker. Listed in January 2020, 0.17% MER, 15.3% three-year annualized return through May 2026. The lowest-cost U.S. mid-cap exposure on the Morningstar Five Star and Gold list. The U-suffix means it trades in USD on the TSX.

ZMID.U fills a gap in many Canadian DIY portfolios. The major all-in-one ETFs (XEQT, VEQT, XGRO) own large-cap U.S. equity through the S&P 500 but underweight mid-caps relative to the total U.S. market. ZMID.U lets you add that sleeve cleanly.

Not financial advice. Fund details change. Check current disclosures.

What ZMID.U actually is

TSX-listed but USD-denominated (the U-suffix). BMO Asset Management manages it. It tracks the S&P MidCap 400 Index, which holds the 400 mid-sized U.S. companies that sit between the large-cap S&P 500 and the small-cap S&P 600.

ZMID.U fund facts
Attribute	Value
Ticker	ZMID.U (TSX, USD)
Inception	January 28, 2020
Asset mix	U.S. mid-cap equities
MER	0.17%
Strategy	Passive, index-tracking
Currency	USD (TSX-listed)
Net assets	about $340.2M (May 2026)
3-year annualized return	15.3% (through May 19, 2026)

What ZMID.U holds

ZMID.U asset allocation

U.S. equity 97.4%

International equity 2.5%

Cash 0.1%

Source: Morningstar Direct, data as of May 19, 2026, via The Globe and Mail.

The S&P MidCap 400 leans more toward industrials, financials, and consumer-cyclical names than the S&P 500. It is meaningfully less tech-heavy than the headline U.S. index, which adds a bit of diversification on top of a large-cap core.

The fee

Fee drag calculator

How much ZMID's MER costs vs IJH over time

Starting balance Annual contribution Years Gross return %

Extra cost from ZMID

That's what you pay ZMID (0.17%) over 20 years above what IJH (0.05%) would charge on the same portfolio.

ZMID total fees

IJH total fees

Peer comparison: IJH, iShares Core S&P Mid-Cap ETF (U.S.-listed), same index, USD-account-required. Assumes constant gross return, annual contributions made at year-end, and MER charged on average annual balance. Real returns vary.

For illustration only. Simplified compounding. Ignores trading costs, tracking error, distribution reinvestment timing, taxes, and the obvious fact that real returns are not constant. MERs and peer fees as of May 2026 and may change. Do not use this number as the basis for a real decision.

ZMID.U costs about 12 bps more than the U.S.-listed IJH. The premium is the Canadian wrapper.

Why U.S. mid-caps matter

Tax treatment

Tax treatment for Canadian investors

Distribution frequency: Quarterly (USD-paying)
What distributions are made of: Foreign income from U.S. dividends, paid in USD
Small capital gains distributions
In a registered account: Inside an RRSP, U.S. dividend withholding is exempt under treaty for U.S.-listed ETFs but the treatment for a Canadian-listed USD wrapper depends on the underlying holdings structure. Verify with BMO's specific tax-treatment notes if RRSP placement is your primary tax driver.
In a non-registered account: Distributions are paid in USD. If you hold ZMID.U in a CAD account, your brokerage may convert to CAD before depositing, which adds FX conversion friction. A USD account avoids that.
Adjusted cost base: ACB tracking happens in USD if you hold ZMID.U in a USD account. If you hold it in a CAD account, you'll need to convert each transaction to CAD using the BoC exchange rate for tax purposes.

General guidance, not tax advice. Distribution composition shifts year to year, and edge cases (currency-hedged wrappers, fund-of-funds structures, the U.S.-Canada treaty's reach inside an RRSP) can change the picture. Confirm with the issuer's current T3 disclosures and a tax professional before acting.

How ZMID.U compares to alternatives

ZMID.U vs ZMID (CAD). BMO offers a CAD-denominated sister listing without the U-suffix. Same fund, different currency on your trade. Pick based on whether you hold USD or CAD already.
ZMID.U vs IJH (U.S.-listed). Same S&P MidCap 400 index, 0.05% MER. Cheaper but needs a USD account on a U.S. exchange.
ZMID.U vs a broad U.S. total market ETF. XUU or VFV cover the full U.S. equity market in one ticker. ZMID.U is a tilt on top of broad coverage, not a substitute.

If you are scanning the wider field, ZMID.U sits alongside a run of newer Canadian ETFs that launched in 2020 and 2021.

Frequently asked questions

What is ZMID.U?

BMO S&P U.S. Mid Cap Index ETF, USD-denominated. A passive index-tracking ETF that follows the S&P MidCap 400 Index.

What is ZMID.U’s MER?

0.17%. The lowest U.S. mid-cap exposure on the Morningstar Five Star and Gold list.

What does the .U suffix mean?

The .U indicates the fund trades in U.S. dollars on the TSX. BMO offers a sister listing in CAD without the suffix. Same fund, different trading currency.

Should I pick ZMID.U or ZMID (CAD)?

Pick ZMID.U if you already hold USD and want to avoid an FX conversion on the trade. Pick ZMID (CAD) if your account is CAD-only or you don’t want to track separate currency cost bases.

Why hold U.S. mid-caps separately?

Because the typical Canadian “broad U.S. equity” wrapper (XUU, VFV, XUS) is built on the S&P 500, which underweights mid-cap names. If you want representation across the full U.S. market, adding ZMID.U is one way to fill the gap.

Have U.S. mid-caps beaten the S&P 500?

Over the three years through May 2026, no. The 15.3% annualized return is solid but lagged the S&P 500’s roughly 18% over the same window. Mid-caps have been left behind by the AI-led mega-cap rally. Over longer horizons, mid-caps have generally compounded ahead of large-caps but with more volatility.

Where should I hold ZMID.U?

In an RRSP if tax efficiency on the modest U.S. dividend withholding tax matters. In a USD account in any wrapper if you don’t want to deal with FX conversion on distributions.

Is ZMID.U a good ETF?

For its specific job, filling the U.S. mid-cap gap, ZMID.U does it at the lowest fee among Canadian-listed options here, which is the main thing to want from an index sleeve. It is not a one-ticker solution, so it is a good fit only as a deliberate tilt on top of broad U.S. or global equity. Judge it on whether you actually want mid-cap exposure, not on the recent three-year number alone.

ZMID.U vs VFV?

These are not substitutes. VFV tracks the large-cap S&P 500, while ZMID.U tracks the mid-cap S&P MidCap 400, so the two own different slices of the U.S. market with almost no overlap. Many investors hold VFV (or another broad fund) as the core and add ZMID.U as a smaller mid-cap top-up rather than choosing one over the other.

The honest verdict

Good fit for

DIY investors who already hold a broad U.S. equity core (XUU or VFV) and want a deliberate mid-cap tilt, ideally inside a USD account.

Skip if

You don't want to manage a USD position or you already have full-market U.S. coverage (e.g., through a total-market ETF that includes mid-caps).

Cheaper alternative IJH · iShares Core S&P Mid-Cap ETF (U.S.-listed) · MER 0.05%

Bottom line

ZMID.U fills the U.S. mid-cap gap in most Canadian DIY portfolios at a competitive fee. The USD denomination is a feature if you already hold USD, and a friction if you don’t. Treat it as a tilt on top of broad U.S. equity, hold it in a USD account if possible, and expect mid-caps to lead and lag at different points in the cycle.

ZMID.U ETF: what BMO S&P U.S. Mid Cap Index ETF is, what it holds, and how it works