If you’d invested in: 32Red and Mayfair Group

32Red (Aim: TTR) is an online casino, poker and bingo company registered in Gibraltar. It listed on Aim in 2005, and in the year immediately after listing the share price slumped, wiping 70% off the value of the company.

However, the last six years have seen the shares climb more than 800% and double in the past year. In July 2015, it acquired the Roxy Palace online casino for £8.4m. A trading update in January 2016 showed net gaming receipts up by 51% in the previous year.

Be glad you didn't buy...

Mayair Group (Aim: MAYA) is a Malaysia-based company that manufactures and installs industrial, commercial and residential air purifiers, operating mainly in China. The company was established in 2001, and listed on 7 May 2015, raising £16.2m.

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Despite rising revenue and profits up 49% and 47% in the six months to 30 June last year the shares have followed a relentlessly downward path since listing, shedding more than 60% of their value.