How Some ETF Issuers Use Their Own Funds for Cash Management

Simplify Government Money Market ETF

SBIL

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SBIL is a useful example of how a cash management ETF can serve two different purposes: as a standalone place for investors to hold cash and as collateral inside an issuer's more complicated derivatives-based ETFs. However, money market ETFs such as SBIL differ slightly from the traditional money market mutual funds investors may be familiar with.

SBIL doesn't maintain a fixed $1 net asset value (NAV), nor do investors transact once per day at NAV. Because it's an ETF, shares trade throughout the day on an exchange at market prices. However, as a money market fund SBIL is subject to the liquidity, maturity and credit-quality requirements of Rule 2a-7 under the Investment Company Act of 1940.

On its own, SBIL is straightforward. The fund has r$4.78 billion in assets under management, charges a 0.15% expense ratio and currently has a 3.69% seven-day SEC yield. But a meaningful portion of those assets comes from SBIL's second job: serving as an underlying holding within other Simplify ETFs.

One notable example is the Simplify Managed Futures Strategy ETF

, a trend-following strategy designed to provide low correlation with conventional stocks and bonds. SBIL provides a cash and collateral sleeve while CTA obtains much of its differentiated market exposure through derivatives.

It's a similar story with the Simplify Barrier Income ETF

, which sells 30 barrier options across a “worst-of” basket tied to three major U.S. equity indexes. SBIL again provides collateral supporting those derivative positions rather than leaving the fund's cash sitting idle.

You'll also find SBIL inside one of Simplify's highest-yielding products, the Simplify Volatility Premium ETF

. SVOL currently has a 21.22% distribution yield and generates much of its strategy's income through an inverse exposure to short-term VIX futures alongside other portfolio overlays.

The common thread is derivative use. CTA, SBAR and SVOL pursue very different strategies, but each needs liquid collateral sitting behind its derivatives exposure. By using SBIL, Simplify can put that collateral to work in short-term government securities while simultaneously keeping those assets within its own ETF lineup.

ProShares Genius Act Compliant Money Market ETF

IQMM

IQMM’s name refers to the GENIUS Act, the federal framework establishing regulatory requirements for payment stablecoins in the U.S. ProShares specifically structured IQMM around the Act's reserve requirements. That makes the ETF particularly relevant to stablecoin issuers and other institutional investors looking for a liquid reserve asset designed with the new regulatory framework in mind.

For everyone else, IQMM functions much like a conventional government money market ETF. After deducting its 0.15% net expense ratio, the fund currently has a 3.60% seven-day SEC yield, making it perfectly usable as a standalone cash holding. But ProShares has also started putting IQMM to work inside its own ETF lineup.

One example is the long-running ProShares Bitcoin ETF (BITO), which obtains its Bitcoin exposure primarily by rolling Chicago Mercantile Exchange (CME) Bitcoin futures rather than holding Bitcoin directly. Those futures positions also require collateral, and IQMM provides one place for BITO to put that capital to work while maintaining the necessary liquidity.

IQMM has also found another role as collateral for ProShares' recently launched lineup of autocallable income ETFs. An autocallable is a structured payoff that can generate periodic income as long as an underlying index remains above specified barriers, while also incorporating conditions under which the position can terminate, or be "called," early. The tradeoff is that investors can still face losses if the underlying market falls sufficiently far through the strategy's downside protection barrier.

ProShares has packaged that structure across three major U.S. equity benchmarks through the ProShares Nasdaq-100 Autocallable Income ETF

, ProShares S&P 500 Autocallable Income ETF

ACSP

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, and ProShares Russell 2000 Auto-Callable Income ETF

ACRT

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. All three use IQMM as part of the collateral supporting their swap-based autocallable exposure.

That gives IQMM much the same dual purpose we've seen with SBIL. Investors can buy it directly as a cash management ETF, while ProShares can use the same fund as a liquid collateral pool supporting everything from Bitcoin futures to structured autocallable strategies.

Roundhill Weekly T-Bill ETF

WEEK

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WEEK takes a slightly different approach from SBIL and IQMM. WEEK isn't a money market fund and therefore isn't governed by Rule 2a-7. Still, its underlying portfolio is about as conservative as it gets.

WEEK actively manages a portfolio of zero- to three-month U.S. Treasury bills, essentially maintaining and continually rolling a short-term Treasury ladder. The extremely short maturities keep interest-rate sensitivity and price volatility minimal. Investors also receive weekly distributions, which currently work out to a 3.49% 30-day SEC yield after the fund's 0.19% expense ratio.

Roundhill also happens to operate one of the industry's largest lineups of covered call ETFs, many of which use cash-settled index options. Those options don't require the fund to deliver shares of an underlying stock when exercised, but the exposure still needs collateral sitting behind it. Unsurprisingly, WEEK frequently fills that role.

For example, the Roundhill S&P 500 0DTE Covered Call Strategy ETF

sells zero-days-to-expiration (0DTE) S&P 500 Index options each trading day while maintaining overnight equity exposure. WEEK is used as part of the collateral supporting those daily options positions. The same arrangement appears in the Roundhill Russell 2000 0DTE Covered Call Strategy ETF

RDTE

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and Roundhill Innovation-100 0DTE Covered Call Strategy ETF

QDTE

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, both of which also hold WEEK.

I also like WEEK as a standalone cash management ETF. The weekly distribution schedule is a welcome change from the monthly cadence common among many cash and money market products, particularly for investors who want more frequent income.

There's also a potential tax advantage. Because WEEK invests in U.S. Treasury securities, the portion of its distributions attributable to Treasury interest is generally exempt from state and local income taxes. Investors should still confirm the qualifying percentage reported by Roundhill and reflected on their year-end tax documents rather than assuming every dollar distributed receives that treatment.

So, WEEK effectively does double duty for Roundhill. It's a standalone ultrashort Treasury ETF for investors who want liquidity and frequent distributions, while also providing a ready-made pool of Treasury collateral for some of the issuer's most derivatives-intensive strategies.

Please note that this article reflects the author’s personal views and does not represent the opinions of the publication or its affiliates. It is for informational purposes only and does not constitute investment advice. It is essential to seek guidance from a registered financial professional before making any investment decisions.