ONGC, Oil India, other upstream oil stocks fall up to 4%. What’s triggering the decline? by ET Markets | February 18, 2026 12:09 pm | Indian Stocks, Market, News Upstream oil stocks, including ONGC, Oil India and Seamec, fell sharply on Wednesday as crude prices weakened amid progress in US–Iran talks. Lower oil prices hit producers’ realisations and margins, triggering broad declines across upstream names.
