Thesis: This portfolio provides a safe place to park your cash and earn historically high interest rates.
Portfolio construction: It invests in a treasury bill ETF. The returns of a treasury bill ETFs closely track the returns of a basket of the short term debt of the United States government. This debt is widely viewed as a safe investment because the debt is fully guaranteed by the U.S. government, and the debt held is only a few months from maturing.
Risks: While treasury ETFs are generally viewed as low-risk, they are not completely risk free. Changes in short-term interest rates may cause the portfolio to lose value. The portfolio may also lose value if the U.S. government defaults on its debt, or credibly threatens to do so.