BDO has retained its premier ranking as the firm with the biggest chunk of AIM clients at 152, just two above KPMG which is snapping at it heels with 150 companies, the April 2015 Adviser Rankings reveal.
PwC clung on to its fourth position with 120 clients, after securing an additional audit win, while Baker Tilly retained its seventh position with 58 clients, after a gain of two, with Crowe Clark Whitehill in eighth with 43 clients.
In the FTSE AIM 100 stakes, PwC retains its crown with 31 clients, after a gain of three, while BDO move up to fifth with nine clients. Baker Tilly meanwhile kept its seventh spot with four clients, after a gain of one.
PwC still sits atop the market cap rankings as the value of their clients soars by 25% to £21.36bn, while the Big Four firm added one FTSE AIM UK 50 client to take pole position in that league to boot.
When it comes to the sector rankings, BDO dominates the basic materials turf with 31 clients. It also bosses the consumer goods market with nine clients, while KPMG takes first place in the consumer service stakes with 16 clients.
Grant Thornton leads the technology sector with 27 clients while rising to the top of both the healthcare and industrials sectors.
In oil and gas, BDO rule supreme with 25 clients while Baker Tilly and Jeffreys Henry both move up into the top ten.
KPMG is the dominant auditor of stock market clients overall, with 399, followed by PwC (360) and Deloitte (276).