Episode 06 · 10:32 · watch
The portfolio, not the balance sheet. SOMA is the securities portfolio the New York Fed runs for open market operations. It is by far the largest item on the asset side, but gold certificates, loans to banks and premises are not in it — which is why articles about “the Fed's balance sheet” quote a larger number.
| SOMA holdings, 4 November 2026 unless stated | Value |
|---|---|
| Portfolio total, 4 November 2026 | $6,357.6 bn |
| Peak | $8,423.3 bn on 13 April 2022 |
| Start of the series | $651.0 bn on 9 July 2003 |
| Growth factor | 12.9× |
| Fall since the peak | $2,065.7 bn · 24.5 % |
| Treasury notes and bonds | $3,597.9 bn · 56.6 % |
| Mortgage-backed securities | $1,876.2 bn · 29.5 % |
| Treasury bills | $573.4 bn · 9.0 % |
| Inflation-protected Treasuries | $277.7 bn · 4.4 % |
| Floating rate notes | $22.9 bn · 0.4 % |
| Commercial mortgage-backed securities | $7.3 bn · 0.1 % |
| Agency debt | $2.3 bn · 0.0 % |
| Mortgage securities incl. CMBS | $1,885.9 bn · 29.7 % |
| …peak | $2,740.2 bn on 13 April 2022 |
| Government paper in the portfolio | $4,471.7 bn |
| Total federal debt outstanding | $40,559.8 bn |
| Debt held outside government trust funds | $32,763.8 bn |
| Fed share of all federal debt | 11.0 % |
| Fed share of the publicly held part | 13.6 % |
| Weekly observations | 1,218 |
The arithmetic that catches a common error. The reported total equals bills + notes and bonds + TIPS + floating rate notes + MBS + CMBS + agency debt, exactly, in all 1,218 weeks. The TIPS inflation compensation line sits beside that total, not inside it — adding it overstates the portfolio by about $107 billion. The build script checks the sum and stops if it does not match.
As used in the episode — the charts are generated from exactly this.
soma-weekly-2003-2026.json 1,218 weekly observationsNone yet. Errors reported in the comments are corrected here and noted with the date.
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