Independently minded publishing

Media coverage

Three Seasonality Anomalies

Three Seasonality Anomalies

Odd and even weeks

Earlier this year, the FTSE 100 Index rose in the second week of February. The following week, the market fell. The week after that the market increased. This pattern of alternating positive and negative week returns continued for another three weeks.

Is this an established behavioural pattern of stocks ¬alternating weeks of positive and negative returns?
The short answer is no. Before February this year, the previous time the market had alternated the sign of weekly returns for six consecutive weeks had been in 2015. It’s a pattern that occurs roughly once a year.
However, while extended runs of alternating week returns may be fairly rare, there is an odd characteristic of week returns. Read more

Media Enquiries

If you’d like to get in touch with the author for interview or comment, or you’d like a review copy of this book, please contact us at or call +44 (0)1730 269809.


For information on available rights, please contact

Bulk purchases

Discounts for bulk purchases available. Please contact for a quote.