Shares of Chilean salmon companies on the Santiago Stock Exchange are showing small signs of life over the past month, an indication that investors may be feeling more confident about an industry recovery, and the prospect of much-needed restructuring.

Thursday's announcement that Japanese conglomerate Mitsui would acquire a 23.37 percent stake in Multiexport gave a 1.12 percent boost to that company's shares, lifting it to CLP 90 per share.

The uptick brings the stock up 9.8 percent over the past month, clawing back some of the losses the stock has seen year to date, with the share price down more than 30 percent.

Mitsui's