India, Aug. 5 -- On Wednesday, the shares of Gran Tierra Energy Inc. (GTE) were gaining around 36% in the pre-market on the NYSE, as the company returned to profit in the second quarter from loss last year. The turnaround is mainly due to higher prices for barrels of oil, despite lower production.

In the pre-market activity on the NYSE, the shares were trading 36.26 percent higher at $9.32 after closing Tuesday's trading 2.01 percent lower.

Net income for the period was $24.86 million or $0.70 per share, compared to loss of $12.74 million or $0.36 per share in the same quarter last year.

Adjusted EBITDA for the period went up to $85.07 million from $76.99 million a year ago.

Oil, Natural Gas and NGL Sales increased to $187.18 million fr...