U.S. DOJ Streamlines Antitrust Review Process for Mergers and Acquisitions
Miles Bennett
The U.S. Department of Justice plans to unveil a new merger-review model, committing to decide within roughly five weeks whether to expand or close an investigation — a move that extends the Trump administration's permissive stance on dealmaking.
What exactly is changing?
The DOJ's antitrust division will focus on the most significant competitive-harm risks, rather than running a broad sweep on every case.
Core commitment: a decision to close or expand an investigation within about five weeks of receiving company documents.
The department will also cut the volume of executive and employee records demanded from merging parties. In plain terms = companies used to hand over mountains of internal files; now regulators will zero in on the most relevant ones.
Why is this a policy U-turn?
Under the Biden administration, the DOJ dramatically expanded its information requests and favored litigation to block deals over negotiated settlements.
The Trump administration takes the opposite view: settle when possible. The recent Live Nation antitrust case was resolved just days after trial began — same direction.
This means → the regulatory posture is shifting from "suspect first, clear later" to "focus fast, decide fast," noticeably loosening the M&A environment.
Are there real cases already?
The new process has been piloted in two mergers this year, both of which closed ahead of schedule.
Approved marquee deal: Paramount's proposed $81 billion acquisition of Warner Bros. Discovery.
Still under review: Transocean's proposed $5.8 billion takeover of rival Valaris. This reflects that the new model is not a blanket green light — complex deals still take time.
What does this mean for the market?
Under current rules, mergers valued above $133 million must be filed with federal antitrust enforcers. Of roughly 2,000 deals disclosed last year, only 2% triggered an extended investigation.
But those extended reviews can drag on for nearly a year — the five-week decision window targets exactly that waiting period.
In plain terms = the vast majority of deals already sail through. The real beneficiaries are transactions in the gray zone — "might be investigated, but the risk isn't that high." Whether the new policy materially shortens timelines remains to be proven by subsequent cases.
Content is for reference only, not financial advice.