Metal Tiger plc (LON:MTR) shares shot up 25% to 1.75p on the day.
The firm told investors its transaction to invest in ZimNRG had been approved by shareholders and it has now a 28.25% stake.
Resource investor Metal Tiger put in £50,003 to acquire over 19mln shares.
Indeed, small caps were doing well at lunch, alongside blue chip broker FTSE100, with FTSE AIM 100 up 2.12% to 3,347 and the FTSE AIM All share 1.2% ahead at 710.870.
Moods in then markets is one of serenity ahead of what looks like busy week to come.
Alastair McCaig, analyst at spreadbetter IG, said: "Monday is likely to be the calm before the storm, as a dearth of corporate and economic data will see traders scratching around for a sense of direction ahead of this week’s UK Budget and the Federal Open Market Committee’s (FOMC) interest rate decision."
Brent crude was easing upwards - up 1.78% to US$40.49 a barrel despite Iran saying it would not join OPEC talks to freeze output until it boosted its own production. as it seeks lost sales after sanctions were lifted.
LGO Energy PLC (LON:LGO) rose 8.47% to 0.32p as it revealed some green shoots of recovery in its Trinidad oil business.
Stronger oil prices in this past month have prompted a new programme to rework old wells at LGO’s Goudron field.
The timely development, which will be completed in a matter of weeks, is expected to add about 100 barrels per day to the fields output, giving additional cash-flow at a time when the company is evaluating ‘strategic financing opportunities’.
On the other hand, Trinity Exploration & Production (LON:TRIN) slumped almost 43% to 1.50p after telling investors that a previously agreed $20mln sale of its onshore production business would no longer proceed.
The company said the deal, which had a ‘backstop’ date of March 13, still had one condition outstanding and it has sent a termination notice to the proposed buyer Touchstone.
Other notable risers were Keras Resources (LON:KRS), which lifted 11.76% to 0.95p after it struck a third gold tribute agreement in Western Australia to bring its potential resource inventory to over 500,000 ounces and advance its aim of becoming a cash flow positive miner.
The company inked a binding profit share agreement with KalNorth Gold Mines Limited (KalNorth) for the Lindsay's project, which includes open pit and underground resources of 215,100 ounces at 1.7g/t of the yellow metal - 77% of which falls into the higher confidence indicated resource category.
Tissue Regenix (LON:TRX), the medtech firm, added 2.94% to 17.5p after broker Jefferies rated the shares a 'buy', and says orthopaedics will provide the next leg of growth to the company.
"Each business stream appears well on-track and there has been no material deviation from the timelines outlined at the Capital Markets Day in Oct-15," it said, lifting the price target to 37p from 36p.
Footsie was 0.29% higher, having dropped down from earlier levels, at 6,157 with miners gaining and InterContinental Hotels (LON:lHG), which added 5.95% to 286.5p.