If you’d invested in: Kainos Group andf Acacia Mining

If only...

Kainos Group (LSE: KNOS) provides information-technology services, consulting, and software to customers worldwide. For the period to the end of March the company reported an order backlog of £76.4m, around one year's worth of revenue.

At the beginning of September it also said its full-year results were expected to be in line with current market expectations, as a robust balance sheet and positive cash generation continues to benefit the firm.

Be glad you didn't

Acacia Mining (LSE: ACA) is a gold miner operating in Tanzania, with properties in Kenya, Burkina Faso and Mali. It recently reduced the scale of its operations at the Bulyanhulu mine in Tanzania following a bitter row with the country's government, which caused the share price to plunge.

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The miner said the government's decision in March to ban exports of gold and copper concentrate has hit 35% of its production, costing it $210m to date.