In today’s market, where central banks are tightening policy and investors are bracing for prolonged high-rate environments, the need for a reliable, low-risk cash management tool has never been more critical. Enter SGOV, the iShares 0–3 Month Treasury Bond ETF, which has emerged as a compelling alternative to traditional money market funds and cash equivalents. Let’s break down why SGOV deserves a prime spot in your portfolio—and how it stacks up against the competition.

The Case for SGOV: Yield, Cost, and Duration

SGOV’s appeal lies in its simplicity and efficiency. As of August 2025, it offers a 30-day SEC yield of 4.28%, outpacing the 4.02% 7-day yield of Fidelity’s FZFXX, a popular money market fund. While the difference may seem marginal, it compounds significantly over time, especially when paired with SGOV’s 0.03% expense ratio—a stark contrast to FZFXX’s 0.42%. This cost advantage alone can boost net returns by hundreds of basis points annually.

But the real magic is in SGOV’s ultra-short duration. With a weighted average maturity of just 40 days and a duration of 0.10 years, it’s practically immune to interest rate fluctuations. Compare this to FZFXX’s 34-day maturity and 0.09-year duration, and you’ll see why SGOV is a safer bet in a rising rate environment. Traditional money market funds, while similarly short-dated, often rely on repurchase agreements (repos) that introduce a sliver of credit risk—something SGOV avoids entirely by holding only U.S. Treasury bills.

Tax Efficiency and Liquidity: SGOV’s Hidden Edge

For investors in high-tax states, SGOV’s state and local tax exemption is a game-changer. Unlike FZFXX and SPAXX, which use repos and face state tax liabilities, SGOV’s Treasury-only portfolio ensures that every dollar earned is retained after taxes. This makes it a superior choice for taxable accounts, where even small tax advantages can add up.

Liquidity is another key factor. SGOV trades on the stock market with intraday liquidity, allowing investors to react swiftly to market shifts. Traditional money market funds, while stable, are priced once daily and lack the flexibility of ETFs. For those who value the ability to buy or sell at any time, SGOV’s structure is a clear winner.

The Bigger Picture: SGOV in a Diversified Portfolio

In a rising rate environment, the goal is to preserve capital while earning competitive returns. SGOV’s low duration and zero credit risk make it an ideal cash substitute for investors who want to avoid the volatility of longer-term bonds or equities. Consider this: while the S&P 500 surged 13.1% in the past quarter, SGOV returned a modest 1.1%. But in the last two weeks, when the market dipped, SGOV outperformed with a 0.2% gain. This resilience underscores its role as a stabilizing force in a diversified portfolio.

Moreover, SGOV’s performance isn’t just about safety—it’s about strategic positioning. With $50.3 billion in assets under management, it’s the go-to vehicle for investors seeking to hedge against rate hikes. Its outflows have been dwarfed by inflows into SGOV, which has pulled in $20.5 billion year-to-date. This trend reflects a broader shift toward short-duration, high-liquidity assets as investors prepare for a prolonged high-rate world.

The Verdict: Why SGOV Beats the Alternatives

While money market funds like FZFXX and SPAXX remain popular, SGOV’s combination of higher yield, lower cost, tax efficiency, and liquidity makes it a superior choice. For every dollar invested, SGOV delivers more bang for your buck. And in a market where every basis point counts, that’s a big deal.

So, what’s the takeaway? If you’re looking to manage cash in a rising rate environment, SGOV is the tool you need. It’s not just a placeholder—it’s a strategic asset that can enhance returns, reduce risk, and keep your portfolio agile.

Final Call to Action: Rebalance your portfolio to include SGOV as a core cash management tool. For taxable accounts, pair it with state-specific money market funds to maximize after-tax returns. And for those who want to stay ahead of the curve, consider SGOV as a hedge against the next rate hike cycle. In a world of uncertainty, SGOV is your best bet for stability and growth.