A notable plunger on AIM this week was Majestic Wine PLC (LON:WINE), which dropped 19% after it swung to a loss in its first half as a sluggish UK retail market and increased investment in its growth strategy soaked up its earnings.
The AIM 100 firm also said it would be stockpiling around £5mln-£8mln in additional inventory to mitigate against any disruption caused to its supply chains by Brexit next year.
Meanwhile, Eurasia Mining plc (LON:EUA) shares struck gold, surging 43% after it received approval for its Monchetundra platinum group and base metals project from the Prime Minister of Russia.
The Monchetundra project comprises 1.9mln ounces of palladium-led reserves and resources with platinum, gold, copper and nickel carrying a gross value of US$2.11bn.
Further up the chain in second place among the weekly risers was Haydale Graphene Industries PLC (LON:HAYD), which rocketed 78% after signing an exclusive licence agreement for its PATit anti-counterfeiting technology with Thai firm TKS Siampress Management.
The PATit technology uses graphene inks to print a specific pattern for a customer that produces a verifiable capacitance reading.
Another graphene products firm, Directa Plus PLC (LON:DCTA), was also on the up jumping 11% after clinching a €200,000 supply deal for its G+ oil adsorption barriers.
The group was also invited to participate in an oil spill response exercise with Petroleum Development Oman, the Omani state-controlled oil & gas company.
Marketing and media firm Ebiquity plc (LON:EBQ) plunged 26% in the week after it warned operating profits would be “materially below” current forecasts.
Despite receiving approval to offload its floundering Advertising Intelligence division on Thursday, the company is still stuck with another underachieving business in the shape of its US Digital Analytics practice which has endured various “challenges” over the past year, while delays in closing new contracts in Germany hadn’t helped matters.
Home safety product group FireAngel Safety Technology Group PLC (LON:FA.) was also feeling the heat, falling 24% as it issued its own profit warning for 2018.
The firm said it expected results for the year to be "materially below market expectations", blaming the reduced earnings on the cost of its transition into an independent technology-led business which delivers connected solutions that complement its core product range.
The AIM All-Share had a dismal week, dropping 2.6% to 922 while the FTSE 100 fell 0.3% to 6,978.
Bucking the wider trend, Greatland Gold PLC (LON:GGP), which surged 64% after releasing “truly spectacular results” from the first hole of its latest drilling campaign at the Havieron licence in Western Australia.
The mining firm said the results had significantly extended the mineralisation from its first drilling campaign, as well as establishing new peak grades of 211.30 grammes per tonne of gold and peak copper of 8.45%.
At the reverse end of the scale, and sitting bottom of the pile, was online gaming marketing firm Veltyco Group plc (LON:VLTY), which saw its shares crash 73% after it revealed difficulties in receiving payments totalling around €10.6mln.
As a result of the difficulties, Veltyco said it had reduced marketing activities in the online financial trading sector to zero as it sought to migrate revenues to its own regulated brand scheduled to be launched in December, although the outlook for the launch was muted given the firm only has €600,000 in the bank as of Thursday.
Meanwhile, the top riser in the week was Imaginatik Plc (LON:IMTK), with a 90% jump in its share price after trading began to improve towards the end of the first half of its fiscal year.
The software firm, which parted company with its chairman and chief executive in June, has been busy cutting costs this year and said that annualised net cost savings of £890,000 have been achieved along with contract wins from four new customers during the reporting period.
Gas firm Sound Energy PLC (LON:SOU) has much less to shout about as shares tanked 38% after its TE-9 well in the Tendrara area of Morocco was plugged and abandoned.
The group said the TE-9 well had drilled to a total measured depth of 2925 metres but had not established the presence of producible gas.