AIM performance in 2020 was dazzling and looks set to continue 25 Jan 2021 Many smaller companies did well through the first year of the pandemic. Chris Boxall, co-founder of AIM specialists Fundamental Asset Management, reviews AIM performance in 2020. London’s AIM market had a remarkable 2020, ending the year with its market value at an all-time high and with the AIM index also significantly outperforming other UK main market indices. While smaller companies have a tendency to underperform their larger peers in a struggling economy – and the UK economy certainly struggled in 2020 – a large number of AIM companies were beneficiaries of the pandemic and lockdown environment.