AIM shares were allowed into Individual Savings Accounts (ISAs) five years ago in early August 2013. This change has certainly helped to boost trading levels in AIM shares, although there are likely to be other factors involved in the improvement. In the first half of 2013, before the ISA rule change, there was an average of 18,910 trades each day and the average daily value was £115.4m. Higher trading levels in the second half meant that the 2013 average trades figure was 25,396 a day,
