Updates of this series will be ceased on December 19, 2019. This series doesn't convey any additional information beyond what's available in the base series published through the H.3 release, BOGMBASEW. View both series (plotted on the same graph) for comparison here.
For more details, see the FRED Announcement.
Federal Reserve Bank of St. Louis, St. Louis Adjusted Monetary Base (DISCONTINUED) [BASENS], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/BASENS, January 24, 2021.