From the summary:
In the fourth quarter, there was a $60 billion improvement in the estimated funded status of the 100 largest U.S. public pension plans as measured by the Milliman 100 Public Pension Funding Index. From the end of September through the end of December, the deficit shrank from $1.392 trillion to $1.332 trillion. As of December 31, the funded ratio stood at 73.1%, up significantly from 71.6% at the end of September.
Milliman analysis: Corporate pensions’ $61 billion funding gain in January may cushion early February market slide
Source: Charles J. Clark, Zorast Wadia, Milliman, February 2018
From the summary:
In January, the funded status of the 100 largest corporate defined benefit pension plans improved by $61 billion as measured by the Milliman 100 Pension Funding Index (PFI). As of January 31, the funded status deficit narrowed to $221 billion due to investment and liability gains incurred during January. As of January 31, the funded ratio rose to 87.2%, up from 84.1% at the end of December. January’s impressive funded status improvement was greater than that seen in any of the prior months of 2017.
The market value of assets grew by $13 billion as a result of January’s investment gain of 1.20%. The Milliman 100 PFI asset value increased to $1.505 trillion from $1.492 trillion at the end of December. The projected benefit obligation decreased to $1.725 trillion at the end of January.
Over the last 12 months (February 2017-January 2018), the cumulative asset returns for these pensions has been 11.88% and the Milliman 100 PFI funded status deficit only improved by $50 billion. The funded ratio of the Milliman 100 companies has increased over the past 12 months to 87.2% from 83.8%.