04/09/2026
September is historically the worst performing month for global equity markets
with the S&P 500 pulling back 1.1% on average during the months since 1928.
There are many factors that could be responsible for this phenomenon but it is
widely accepted that the so-called “September Effect” is due to quarter end
which leads to institutional investors locking in profits or selling their loss making
positions; selling loss making positions to reduce capital gains; traders coming back
to work after enjoying a summer holiday and rebalancing portfolios and finally
psychology as the weakness has become expected and is therefore a self-fulfilling
prophecy. 📉🗃️📊