MarketMoodz
Morningstar: Cash diversifies better than Treasurys for busy portfolios
Morningstar argues cash-equivalents are a core ballast, offering meaningful diversification with competitive yields as rates stay elevated. The analysis reframes cash as a long-horizon driver of risk-adjusted returns, not just a liquidity stopgap, targeted at busy professionals who want simple, scalable solutions.
Key Takeaways
- Cash-equivalents can improve risk-adjusted returns by boosting diversification in a higher-for-longer rate environment
- Diversification benefits from cash accrue slowly over decades and through rate pivots
- Cash has had the lowest correlation to stocks over the last three years, making it a stronger ballast than investment-grade bonds
- Income options for cash include money market funds, CDs, Treasuries, and high-yield savings accounts with ~3.4-3.6% yields on short-term proxies
- Practical steps include CD ladders, T-bill ladders, avoiding low-rate sweep accounts, and establishing clear allocation ranges and rebalancing cadence
People Involved
- Amy Arnott Morningstar portfolio strategist
- Vincent Caintic BTIG analyst
Entities Involved
- Morningstar, Inc. Research firm behind the cash-diversification analysis
- iShares - SGOV ETF issuer; 0-3 month Treasury exposure with ~3.55% yield cited
- State Street Global Advisors - BILS ETF issuer; 3-12 month Treasuries exposure with ~3.46% yield cited
- Bread Financial Financial services company raising deposit rates per BTIG notes
- Capital One Financial Bank raising deposit rates per BTIG notes
- LendingClub Financial services platform offering high-yield savings products
- Crane Data Publisher of Crane 100 money fund list cited for yields
- Investment Company Institute (ICI) Trade association reporting money fund assets
- CME Group Provider of CME FedWatch tool tracking rate-cut probabilities
MarketMoodz Analysis
The Morningstar thesis suggests cash can act as a ballast that dampens portfolio drawdowns without sacrificing income, particularly when yields sit at elevated levels. For investors, that implies a re-evaluation of traditional 60/40 mixes and greater emphasis on short-duration cash proxies for diversification, liquidity, and risk management. The practical upshot is clearer: implement cash ladders and maintain liquidity buffers that still participate in yield opportunities, rather than park money in low-rate sweeps.
Historically, the stock-bond relationship has shifted with the rate cycle. When the Fed began raising rates in 2022, stocks and bonds often moved in tandem, eroding traditional ballast qualities. Amy Arnott points to end-2021 three-year correlations of US equities versus long-duration Treasurys at about -0.35, rising to roughly 0.65 by the end of 2025, underscoring how regime changes affect diversification benefits. This context helps explain why cash can outperform Treasurys as a ballast across certain horizons and interest-rate environments.
Looking ahead, investors should watch the Fed's rate path, inflation dynamics, and the evolution of cash incomes. The CME FedWatch tool and the yield data on cash proxies (e.g., money-market funds, CDs, T-bills, and high-yield savings) will drive allocation decisions and reinvestment timing. In the near term, creating CD or T-bill ladders and avoiding low-rate sweep accounts can help lock in yields while preserving liquidity.
Source: Original Article
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