Original Author(s): Josh Sisco, Natasha Mascarenhas, Sarah Frier, Bloomberg
Original Compiler: Saoirse, Foresight News
According to informed sources, the U.S. Department of Justice has launched an antitrust investigation into the venture capital firm Andreessen Horowitz (a16z), with the core controversy being whether the firm's investment partners have inappropriately held board seats at competing artificial intelligence companies. The sources requested anonymity as they were discussing non-public information.

a16z's San Francisco office building. Photo: Smith Collection/Gado/Archive Photos
The companies involved are Databricks Inc., one of the world's highest-valued private tech companies, and Fivetran Inc., both backed by Andreessen Horowitz. Andreessen Horowitz co-founder Ben Horowitz serves on the board of Databricks, while partner Martin Casado holds a board seat at Fivetran. Both companies operate in the same core business, providing enterprises with services for collecting, organizing, and analyzing massive amounts of data.
Martin Casado also previously served on the board of a similar company, dbt labs, which was acquired by Fivetran in June. Informed sources indicate that the Justice Department conducted a months-long review of this acquisition, announced last October, ultimately approving the deal unconditionally.
The sources said that this nearly year-long investigation, previously undisclosed, began roughly in sync with the merger review and has continued to advance even after the acquisition was completed.
Spokespersons for Databricks and the U.S. Department of Justice declined to comment; Spokespersons for Andreessen Horowitz and Fivetran did not respond to requests for comment from the media.
The standard remedy in such investigations is to require the director to resign from the board of one of the competing companies. Multiple similar cases during the Biden administration were resolved in this manner, including at Live Nation Entertainment Inc., where over a dozen directors chose to step down, eliminating the conflict of interest.
Links to the White House
The investigation into Andreessen Horowitz is drawing particular attention due to the firm's close ties to the second Trump administration. The firm has established connections with the White House, and its tech investment portfolio stands to benefit from relaxed regulatory policies, with some members of the Andreessen Horowitz team actively promoting such policies in Washington.
According to Bloomberg, in 2024, Ben Horowitz and fellow co-founder Marc Andreessen each donated millions to organizations supporting the then-presidential candidate Donald Trump. The firm is also a significant voice in AI policy, successfully advocating for the current administration to roll back several safety control measures for AI applications. In the second half of 2024, Ben Horowitz also donated $2.5 million to a super PAC supporting Democratic presidential candidate Kamala Harris.
Informed sources state that the Justice Department has not yet determined the next steps for this investigation, and it's possible the probe may conclude without any action being taken.
This investigation continues a regulatory focus from the Biden era: using the rarely invoked 1914 law to crack down on 'interlocking directorates,' where an individual or entity holds board seats at two directly competing companies.
Under the leadership of former Assistant Attorney General Jonathan Kanter, the Justice Department has on multiple occasions compelled the resignation of directors to resolve interlocking directorate risks. In 2021, then Endeavor Group Holdings CEO Ari Emanuel stepped down from the Live Nation board; between 2022 and 2023, directors at over a dozen other companies also resigned.
The Controversy Over Board Seats at Competing Firms
However, this investigation into Andreessen Horowitz has a unique aspect: the controversy stems not from a single individual, but from multiple partners at the firm holding board seats at competing companies. The relevant legal statute applies to both individuals and corporations, a reading supported by a small number of court decisions, but Andreessen Horowitz could still use this point to challenge any government allegations.
As of this January, Andreessen Horowitz managed $90 billion in assets, making it one of the world's most well-funded venture capital firms. The firm recently closed a $15 billion fund, the largest single fundraise in history, earmarked for investments across all sectors of startups. Andreessen Horowitz has invested billions in multiple AI startups, including the code development startup Cursor (recently acquired by SpaceX) and voice AI company ElevenLabs. It is also a major investor in SpaceX, which went public in June, and has positions in OpenAI, which plans an IPO in the near future.
Databricks is another company in Andreessen Horowitz's portfolio with IPO potential. Since leading a $14 million funding round for Databricks in 2013, Ben Horowitz has continued to lead investments, holding the potential for returns amounting to tens of billions. Databricks announced last week that it had completed a new $5 billion funding round, valuing the company at $190 billion.





