GAIL share price, Nov. 28 -- Shares of Maharatna public sector undertaking (PSU) GAIL (India) Limited tanked 6.5% in early trade on Friday, November 28, after the Petroleum and Natural Gas Regulatory Board (PNGRB) approved a tariff hike that came in below both market expectations and the company's own proposal, denting investor sentiment.

After several months of delay, PNGRB has announced a 12% hike in tariffs for GAIL's integrated natural gas pipeline (INGPL), with effect from January 2026. However, this hike is below expectations of 15% and well below the 33% hike that GAIL was seeking.

PNGRB has, however, clarified that in order to smooth out tariff hike and to avoid a sudden increase, it has decided to provide only interim relief to...