See our roundup of today's AIM risers - see the full LSE winners & losers board here.

Yu Group (YU.)  rises 47% to 187.5p a share

The energy firm Yu Group (YU.) rises 47% after markets opened today following the recent collapse of share prices.

It announced in a trading statement on Wednesday that is has found a £10 million black hole in its profit forecasts, after irregularities in the way it recognised accrued income for customer accounts, and non-payment of debts “significantly above” previously provided for.

Shares fell from 595p a share to a low of 86p a share following the announcement, but are up significantly today as traders continue to see a buying opportunity

Read more here & follow YU. here: 

Tom Energy (TOM) rises 20% to 13.5p a share

TomCo Energy (TOM)  is an oil shale exploration and development company focused on using innovative technology to unlock unconventional oil and gas resources, who have announced the disposal of its interest in Red Leaf Resources for $133,333, which will allow the company to take it to Q1 completing its field tests on the Holliday Block in Utah.

It holds 2900 acres of land in the Uinta Basin of Utah, underlain by the Green River Shale Formation, including one block with a JORC Measured Resource of 126 million barrels of recoverable oil.

It acquired two key patents for an extraction technology, proven from a technical feasibility study, which showed the benefits of using a process involving the use of radio frequency in the extraction of oil & gas from oil shale.

Read more here & follow TOM here: 

Sunrise Resources (SRES) rises 17% to 0.17p a share

Sunrise Resources (SRES)  is a company developing its CS Pozzolan-Perlite project in Nevada, USA.

It has announced successful commercial trials of its bulk samples, producing horticultural grade perlite, and natural pozzolan, compliant with ASTM C618 standards.

Demand for horticultural grade perlite is expected to grow as the cannabis industry increasingly becomes legalised, and demand for natural pozzolan is expected to increase as fly ash shortages continue to build. 

Commenting today Sunrise Executive Chairman Patrick Cheetham said: "I am delighted to be announcing the successful completion of commercial-scale trials on bulk samples of both the pozzolan and perlite from our CS Project. These pave the way for commercial arrangements with the parties involved and tests are also in progress with other potential customers. It is a good time to be entering these markets.

Read more here & follow SRES here: 

Online Blockchain rises 15% to 26p a share

Online Blockchain (OBC)  rose 15% to 26p a share after markets opened this morning.

The company specialises in blockchain research and development, it has an investment in ADFVN, the financial markets website, it recently launched and tested a PlusOneCoin wallet for ADVFN customers, and are working to target the Brazillian market with another cryptocurrency Brazio. 

It also has been working on Happy Pool, which is a cryptomining pool where cryptocoin miners are able to club together to use their combined computing power to earn cyptocurrency coins.

It also recently announced a $100,000 investment interest in Encryptid Gaming Inc, a crypto gaming software development start-up company.

Read more here & follow OBC here: 

See all today's AIM Risers here