The firms recognized in this category successfully pursued complex cases with ­implications for the inner workings of wealthy companies with an outsize influence on the global economy. One of our finalists helped a federal agency with oversight of collapsed credit unions take on the world’s largest banks over their dealings in shoddy mortgage-backed securities. And the winning firm took on a financial ­institution that allegedly lied to investors about its long-term insurance care business, while also coaxing a high-dollar settlement out of one bank accused of playing a role in a widespread scheme to manipulate foreign-exchange rates.

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