Source: Swiss National Bank
Release: Swiss Foreign Exchange Intervention
Copyright, 2016, Swiss National Bank.
(+) numbers mean purchases of USD, (-) numbers mean sales of USD. Unpublished data.
Swiss National Bank, Swiss Intervention: Swiss National Bank Purchases of USD against CHF (Millions of USD) [CHINTDCHFUSD], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/CHINTDCHFUSD, December 16, 2017.