Fannie, Freddie Risk Gauge Hits Levels That Shook Wall Street in 2000s

Fannie Mae and Freddie Mac are taking on more interest-rate risk in their rapidly growing investment portfolios, driving a key gauge of their exposure to levels that rattled Wall Street two decades ago.

The two government-sponsored enterprises have expanded their retained mortgage portfolios, increasing their sensitivity to interest rate changes. A measure of their duration gap — the mismatch between the maturities of their assets and liabilities — has widened to levels last seen in the mid-2000s, before the housing crisis. This development comes as the Federal Reserve maintains a restrictive monetary policy stance, keeping long-term yields elevated.

For equity and fixed-income traders, the rising risk profile of Fannie and Freddie could amplify volatility in mortgage-backed securities (MBS) and related sectors. Historically, large duration mismatches at these agencies have led to sudden hedging activities that ripple through Treasury and MBS markets. Investors should monitor the agencies' quarterly filings for updates on their portfolio composition. For current pricing on agency bonds and MBS, check NowPrice's fixed-income page.

Looking ahead, the key question is whether the agencies will reduce their exposure voluntarily or be forced to by regulators. The Federal Housing Finance Agency (FHFA) has signaled increased scrutiny of the GSEs' risk management. Any regulatory action could trigger repositioning in the $7 trillion agency MBS market. Additionally, the path of interest rates remains uncertain, with the next Fed meeting and inflation data likely to influence the duration gap further.