Next Monday (1 October) will be the first trading day (FTD) of October.
As explained in the 2013 edition of the Almanac, the market has a tendency to be strong on the FTD of a month. And this effect has been even more pronounced in recent years.
In line with this effect, the October FTD tends to be stronger than the average day in the year, but its strength only places October in the middle ranking of all months. Since 1984, the average return for the FTSE 100 Index on the October FTD has been 0.15% (five times the average return for all days in the year), with a positive return in 61% of all years.
The following chart shows the returns for every October FTD since 1984.