What the Park slot does
Every portfolio has money that shouldn't be invested in equities right now. Emergency reserves. A down payment building up. Cash waiting to be deployed when the right opportunity appears. For decades, investors let this money rot in checking accounts at 0.01% while the rest of their portfolio worked.
The Park slot fixes that. It holds short-term U.S. Treasury bill ETFs — funds that own government debt maturing in under three months. The yield tracks the federal funds rate closely. The principal doesn't move meaningfully. The money is accessible within one trading day. It is as close to risk-free as exists in public markets, and it actually pays you.
The distinction between Park and the other four slots matters. Park money is not investment money. It is not there to build wealth — that's Build's job. It is not there to generate income — that's Earn's job. Park exists purely to hold cash securely until it's needed, and to extract every basis point of yield while it waits. One slot, one job.
iShares 0-3 Month Treasury Bond ETF
SGOV is a parking lot for cash. It holds U.S. Treasury bills maturing in under three months, pays monthly, and charges 0.09%. The entire investment thesis fits in one sentence: don't leave money in a checking account when you can hold T-bills at near-identical liquidity for 40–50x the yield.
BIL does the same thing and charges more. SHV and USFR are reasonable alternatives. SGOV wins on cost and AUM — it's the biggest fund in its category by a wide margin, which matters for liquidity and institutional adoption.
Full SGOV analysis →Why SGOV wins this slot
The competition among T-bill ETFs is real but narrow. BIL (State Street) was the original — launched in 2007, widely held, deeply liquid. The problem is that BIL charges 0.14% versus SGOV's 0.09%. On a $100,000 Park allocation, that's $50 a year to own the same Treasury bills. There is no offsetting advantage. BIL is not better diversified, not more liquid for retail investors, not structurally different in any meaningful way.
SHV (iShares) is close to SGOV in cost but smaller in AUM. USFR (WisdomTree) is a floating-rate fund — slightly more complexity for marginally different yield characteristics. Neither is wrong. For most investors, the extra research time is worth more than the yield difference. SGOV is the default because it has the lowest cost, the largest asset base, and nothing to justify looking further.
The argument for BIL is platform-specific: some brokers make BIL more accessible or cheaper to trade than SGOV. If your brokerage charges a commission on SGOV but not BIL, the math changes. Check your platform. Otherwise, SGOV.
The runner-up
The Park slot has only one meaningful runner-up for most investors. The T-bill ETF category is not complicated — the funds hold near-identical assets, so the differences come down to cost and platform availability.
How much Park belongs in your Frame
Park is the Frame's smallest allocation for young investors and grows steadily over time. In your 20s, 5% makes sense — you have decades of compounding ahead, so keeping too much in cash is its own kind of risk. By your 60s, 20% is reasonable: capital preservation matters more, and you may need reliable liquidity for living expenses without selling equities at a bad time.
The allocation should also reflect your specific situation. Investors with six months of expenses already in a bank account can hold less in Park. Investors who are self-employed, commission-based, or otherwise face income volatility should hold more. The table below is a starting point, not a prescription.
| Life stage | Park | Earn | Build | Roam | Dare |
|---|---|---|---|---|---|
| 20s | 5% | 10% | 55% | 20% | 10% |
| 30s | 10% | 15% | 45% | 20% | 10% |
| 40s | 10% | 25% | 35% | 20% | 10% |
| 50s | 15% | 30% | 30% | 20% | 5% |
| 60s+ | 20% | 40% | 20% | 15% | 5% |
Starting points. Adjust to your income stability, risk tolerance, and actual liquidity needs.
One thing worth noting about Park across all life stages: when interest rates are high, the Park allocation earns real money. In 2023–2024, SGOV yielded over 5% — more than most savings accounts and more than many bond funds. When rates fall, that yield compresses. Park is still the right slot regardless of the rate environment, but the opportunity cost of holding it changes with Fed policy.
What Park is not
The Park slot is not a bond allocation. Bonds are duration bets — they move inversely to interest rates, lose principal when rates rise, and are an entirely different risk profile than T-bills. Investors who want bond exposure should look at the Build slot context or speak with an advisor about fixed income. T-bill ETFs like SGOV have near-zero duration and near-zero principal risk. They are not bonds.
Park is also not a substitute for FDIC insurance. SGOV is not a bank account. It is not insured by the FDIC. If the U.S. government were somehow unable to meet its debt obligations — which would be an unprecedented catastrophe for global markets generally — T-bill ETFs would not be safe. For investors who need the psychological comfort of FDIC coverage on their cash, a high-yield savings account at a bank serves that function. Many investors use both: HYSA for immediate emergency funds, SGOV for the rest.
Finally, Park is not the place to chase yield. Some investors look at SGOV's yield and then look for something "similar but higher" — reaching into corporate short-term bond funds, money market funds with credit exposure, or floating-rate funds with complexity they don't fully understand. The Park slot should be boring. The moment you start optimizing Park for yield, you are taking on risk that belongs in Earn or Dare, not here.
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