H6: MONEY STOCK REVISIONS
The Federal Reserve revised its measures of the money stock and their components to incorporate updated seasonal factors and a new quarterly benchmark. This release includes seasonally adjusted measures of the monetary aggregates and components produced with revised seasonal factors, which were derived from data through December 2017 and estimated using the Census Bureau's X-13ARIMA-SEATS seasonal adjustment program. The updated seasonal factors resulted in minor revisions to the growth rates of seasonally adjusted M2 for individual months in 2017, and they slightly decreased the growth rate for seasonally adjusted M2 in the first half of 2017 and slightly increased it in the second half of 2017. The quarterly benchmark incorporates revisions from several sources. Revisions to weekly deposit data begin in 2003. Revisions to deposit data reported in the quarterly deposit reports and deposit data from Call Reports for banks and thrift institutions that are not weekly or quarterly deposit reporters start in 2016. Revisions to money market mutual fund data begin in 2017. In addition, this benchmark incorporates data from Call Reports on the amount of small-denomination time deposits held in individual retirement accounts (IRAs) and Keogh accounts; the associated revisions to deposit data start in 2017. Likewise, it incorporates revisions to IRA and Keogh balances held at retail and institutional money market mutual funds; the associated revisions to data on money market mutual funds also begin in 2017. In addition, this release incorporates the receipt of historical information from other sources of data. The effects of both the revisions to seasonal factors and the new quarterly benchmark on the growth rates of M1 and M2 are outlined in appendix tables 6 and 7. Historical data, updated each week, are available with the H.6 statistical release at www.federalreserve.gov/econresdata/statisticsdata.htm. -------------------- Information on the seasonal adjustment program is available on the U.S. Census Bureau website at https://www.census.gov/srd/www/x13as.  "Call Reports" refers to the commercial bank Consolidated Reports of Condition and Income (FFIEC 031, 041, and 051; OMB No. 7100-0036) and the credit union Statement of Financial Condition (NCUA 5300/5300SF; OMB No. 3133-0004).