[U.S. Department of Justice Launches Antitrust Investigation into Venture Capital Giant a16z] According to Bloomberg, the U.S. Department of Justice is conducting an antitrust investigation into Silicon Valley's top venture capital firm Andreessen Horowitz (a16z). The focus is on its partners simultaneously serving as directors at multiple competing AI companies—co-founder Ben Horowitz is a director at Databricks, while partner Martin Casado is a director at Fivetran. The two companies compete in the data processing sector. Casado previously served as a director at dbt Labs (acquired by Fivetran in June). The investigation has been ongoing for nearly a year, originating from the antitrust review of Fivetran's acquisition of dbt Labs. Although the acquisition was unconditionally approved, the investigation into board positions remains active. Such investigations typically conclude with the resignation of directors.