A healthy number of lesser-known businesses have done very well in share price terms since coming to market in the last two years, with price appreciation reflecting strong operational performances or the fact they sate voracious investor appetite for a particular theme.Readers will be familiar with high-profile post-pandemic newcomers on the London Stock Exchange (LSGE) trading above their issue

Making its debut on AIM today, Helium One Global (HE1:AIM) was up 89.4% on the 2.84p placing price from its oversubscribed £6 million fundraise in November to 5.38p.As its name suggests the company is a play on the helium sector and has 3,590 square kilometres of acreage in Tanzania, it came to the market through an amalgamation with cash shell Attis Oil & Gas which was struck earlier in November