mumbai/Bengaluru, Jan. 24 -- News of the US market regulator seeking to send summons in a bribery case directly to Adani Group promoter Gautam Adani and his nephew Sagar sent the group's listed stocks tumbling between 3% and 15% on Friday. Mint calculations show the stocks cumulatively lost nearly a tenth of their value, or a market capitalization loss of over Rs.1.1 trillion. Shares of Adani Green Energy Ltd plunged 14.6%. Among other stocks, shares of Adani Energy Solutions ended 12% down, Adani Enterprises Ltd fell 10.7%, Adani Ports and Special Economic Zone 7.5%, and Adani Power declined 5.5%. Other Adani Group firms also fell 3-5%. To be sure, the share price fall comes amid a wider market selloff, with the benchmark Sensex falling 0.94%. On Thursday, the US Securities and Exchange Commission (SEC) asked a federal court for permission to personally email summons to billionaire Gautam Adani and his nephew, Sagar Adani, claiming India's ministry of law and justice rejected its request twice in the last 14 months. US laws require that the summons and a copy of the complaint be delivered in person to the accused. The SEC has claimed that since the Adani group chairman has publicly commented on the case and both him and Sagar Adani have also hired law firms to represent them, it can be assumed they are aware of the charges against them. Thus, they are seeking the court's nod to serve summons via email and through their US counsels. "Gautam Adani has commented publicly on this matter repeatedly, including at Adani Group's June 2025 Annual General Meeting," SEC's counsel Christopher M. Colorado wrote in a filing dated 21 January 2026. "Defendants have also retained multiple US law firms who have communicated with the SEC on Defendants' behalf during this litigation," he wrote. Taken together, these facts confirm "that Defendants are fully aware of the litigation and are actively managing their response", Colorado wrote. Thus, the service of summons by delivery to the Adanis' attorneys and by email directly to them would be fully consistent with due process, he argued. Queries to India's ministry of law and justice and the Adani Group did not immediately elicit a response. "In practical terms, this is procedural but important step: it would allow the SEC to formally complete service, start the clock for the defendants to enter appearance and respond, and enable the civil enforcement case to move forward on merits," said Ketan Mukhija....