The US Federal Reserve’s support for the markets can be measured lots of ways, from the impact on bond yields through to comparisons of equity prices and the central bank’s balance sheet. Here’s one I rather like, with a hat tip over to BNP Paribas’s William De Vijlder.
The third round of the Fed’s quantitative easing, or QE∞, is now 41 weeks old, and during that time there hasn’t been a single really bad week, which I defined as a loss of 2.5 per cent or more. The last time there was such a long period without a big down week was during QE2. Before that it hadn’t happened since early 1997.
The total loss of all the down weeks since QE∞ began, including weeks with only a small loss (a somewhat odd measure, obviously offset by plenty of up weeks) has been just under 18 per cent, close to the lowest reached over rolling 41-week periods during the “great moderation” of 2003-2007, and to that reached under QE2. Read more






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James Mackintosh is the Financial Times' Investment Editor, writing and presenting the daily Short View column and video. In 16 years at the FT his posts have included comment editor, motor industry editor and hedge funds correspondent, as well as spells in the Parliamentary lobby and Paris. He was the first reporter hired for FT.com, joining two weeks before it launched.
John Authers is the Financial Times' Senior Investment Columnist, writing the Saturday Long View and a regular Monday column. In a 22-year career at the FT, his previous posts have included global head of the Lex column, investment editor, US markets editor, Mexico City bureau chief and US banking correspondent. His latest book is The Fearful Rise of Markets.