Goldman Sachs and RBC Capital Markets were the top mergers and acquisitions (M&A) financial advisers in the oil & gas sector during the first half (H1) of 2026 by value and volume, respectively, according to the latest financial advisers league table by GlobalData, which ranks financial advisers by the value and volume of M&A deals on which they advised.

Based on its Financial Deals Database, the leading intelligence and productivity platform has revealed that Goldman Sachs achieved the top position in terms of value by advising on $48.3 billion worth of deals. Meanwhile, RBC Capital Markets led in terms of volume by advising on a total of 12 deals.

Aurojyoti Bose, Lead Analyst at GlobalData, comments: “RBC Capital Markets was the top adviser by volume in H1 2025 and retained that position in H1 2026 as well. It was the only adviser to hit double-digit deal volume in H1 2026.

“Meanwhile, Goldman Sachs, despite advising on a much smaller number of deals, led by value in H1 2026 due to its involvement in some big-ticket deals. In H1 2026, it advised on three billion-dollar deals* that also included two mega deals valued more than $10 billion.”

An analysis of GlobalData’s Deals Database reveals that Evercore occupied the second position in terms of value, by advising on $31.6 billion worth of deals, followed by JPMorgan with $25.6 billion, RBC Capital Markets with $25.4 billion, and Barclays with $12.6 billion.

Meanwhile, Jefferies occupied the second position in terms of volume with seven deals, followed by Moelis & Company with six deals, Evercore with five deals, and Houlihan Lokey with five deals.

*Deals valued more than or equal to $1 billion