Blake, Cassels & Graydon and Cassels Brock & Blackwell emerged as the leading legal advisers for metals and mining sector mergers and acquisitions (M&A) during the first three quarters (Q1-Q3) of 2026 in terms of value and volume, respectively, based on a league table from data analytics company GlobalData.
According to GlobalData’s Financial Deals Database, Blake, Cassels & Graydon topped the value rankings having advised on deals worth $14.6bn.
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Cassels Brock & Blackwell was ranked second for deal value, having advised transactions totalling $13.8bn.
McCarthy Tetrault followed with $12.7bn, while Paul, Weiss, Rifkind, Wharton & Garrison handled $12.5bn and Fasken Martineau DuMoulin was credited with $12.3bn.
Meanwhile, in terms of volume, Cassels Brock & Blackwell led by handling 22 deals.
Fasken Martineau DuMoulin ranked second in volume with 18 deals.
Blake, Cassels & Graydon secured third place with 17 deals and higher financial value for the deal, while McCarthy Tetrault ranked fourth having advised on 17 deals.
Paul, Weiss, Rifkind, Wharton & Garrison followed with seven deals.
GlobalData lead analyst Aurojyoti Bose said: “Both Blake, Cassels & Graydon and Cassels Brock & Blackwell witnessed growth in deal value and volume, respectively, during Q1-Q3 2026 compared to Q1-Q3 2025. There was also an improvement in their rankings by these metrics. Cassels Brock & Blackwell’s ranking by volume improved from second to the top spot. It also held the second position in terms of value.
“Meanwhile, Blake, Cassels & Graydon’s ranking by value jumped from seventh to the top position. During Q1-Q3 2026, the firm advised on five billion-dollar deals and involvement in these big-ticket deals helped it register growth in its total advised deals value as well as improvement in its ranking by this metric. It also held the third position by volume.”
GlobalData’s league tables are based on the real-time tracking of thousands of company websites, advisory firm websites and other reliable sources available in the secondary domain. A dedicated team of analysts monitors all these sources to gather in-depth details for each deal, including adviser names.
To ensure further robustness of the data, the company also seeks submissions of deals from leading advisers.
