Diamond producer DiamondCorp (DCP) and advertising technology specialist Matomy Media (MTMY) have both put themselves up for sale.

Diamondcorp has struggled from operational and financial pressures. Its share price soared 54.8% to 3.1p as investors welcomed the move, alongside news that its Lace diamond mine had restarted operations.

The miner says it has already received initial expressions of interest from potential acquirers. Diamondcorp adds that it would also consider merger proposals as part of the strategic review.

Matomy Media has engaged RBC Capital to lead a strategic review of its business, which we believe will include sounding out interest for a takeover.

After an initial setback Matomy joined the stock market in July 2014. The Israeli group was forced to postpone its IPO (initial public offering) earlier that year due to a listing technicality about the number of shares that had to be held by investors within Europe.

Matomy issued a profit warning less than year into life as a listed company due to changes in the programmatic advertising industry. Its shares have rebounded this year, in line with others in its sector - as we reported last week in Shares.

In June, gold explorer Aureus Mining (AUE) saw a complete overhaul of its shareholder register as a result of RBC acting as adviser for a strategic review.

Like Diamondcorp, Aureus had encountered financial and operational problems in the early days of starting a mine. It ended up with large amounts of debt and not enough gold production to generate cash to service its debt repayments.

Turkish mining group MNG took a controlling position, injected a slug of cash and now owns 55% of the business.

MNG Gold struck a deal last Friday to lift its stake to 77% as part of a wider fundraise by Aureus.

Issue Date: 18 Oct 2016