Today (12/8/2022) the Treasury yield curve is deeply inverted with the 3-month yield 80 basis points above the 10-year yield, see: https://home.treasury.gov/resource-center/data-chart-center/interest-rates/TextView?type=daily_treas....
On 8/27/2019 (and additionally on 9/2/2019), the Treasury yield curve was also inverted with the 3-month yield 48 basis points above the 10-year yield. The 8/27/2019 inversion was not as deep as the inversion we have today.
There were additional inversions which occurred before 8/27/2019. On 11/30/2006 (and also on 2/26/2007), the Treasury yield curve was inverted with the 3-month yield 48 basis points higher than the 10-year yield. Also, on 1/1/2001, the Treasury yield curve was inverted with the 3-month yield 77 basis points above the 10-year yield. Some extreme yield curve inversions occurred between 1980 and 1981. During that period, the deepest inversion occurred on 12/9/1980. On 12/9/1980 the 3-month yield was 373 basis points above the 10-year yield.
To view the chart which displays the difference between the 10-year and the 3-month Treasury yields for dates before 12/8/2022 see: https://www.longtermtrends.net/us-treasury-yield-curve/ and view the “10y minus 3M Yield” chart. Expanding the “10y minus 3M Yield” chart will allow you to locate the specific dates of maximum inversion which I listed above.
