J. Walter Thompson (JWT) was an advertisement holding company incorporated in 1896 by American advertising pioneer James Walter Thompson. The company was acquired in 1987 by multinational holding company WPP plc, and in November 2018, WPP merged J. Walter Thompson with fellow agency Wunderman to form Wunderman Thompson. In October 2023, WPP announced yet another merger in which Wunderman Thompson combined with another group agency VMLY&R, to create the new entity VML. This took effect on April 1, 2025 with a legacy website remaining at .
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