Copper mining firm CuDeco Ltd (ASX: CDU) said on Thursday that a major institutional investor infused placement investment of up to $20 million into the company, allowing the institution to get a 6.84 percent interest in the emerging resource industry player.

CuDeco refused to name its new institutional shareholder though it hinted that its new partner is 'sophisticated global investor' which was issued a total of 10 million new CuDeco shares at $2 per share that lead to the new capital of $20 million before costs.

Prior to the entry of its new investor, CuDeco reported that it has been advised by Azure Capital Ltd that the company's volatile share prices were largely caused by the dominant investments made by retail investors in the copper mining hopeful.

The copper miner added that its corporate adviser strongly recommended that the existing shares imbalance could be corrected by aggressively "introducing a substantial institutional investor that would assist in stabilising the company's share price."

Thus the infusion of the multi-million investment from the institutional investor, according to CuDeco, as it added that the fresh capital funds would be mostly utilised for further development works on the company's Rocklands copper project in Queensland.

Earlier in August, CuDeco revealed a downgraded resource estimate on the Rocklands copper site that pushed the company's stock in a downward spiral, shedding as much as 49 percent of its value in the process.

The stock, however, regained its composure this week as CuDeco shares shot up to a high of $2.28 before settling at $2.20 by 1219 AEST on Thursday, as its value jumped by 12 cents or 5.77 percent.