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L.10 · ADVANCED · 2 MIN

Regulatory and Antitrust Considerations

Even the most strategically compelling deal can be blocked by regulators. Understanding antitrust review is essential for assessing deal risk, timeline, and potential remedies.

Quiz · 5 questions ↓
§ 01
RegulatorJurisdictionThresholdTimeline
DOJ/FTCUnited StatesHSR filing >$111.4M (2024)30 days initial, extended with Second Request
European CommissionEUCombined €5B+ revenue25 working days Phase I, 90+ Phase II
CMAUnited KingdomTarget UK turnover >£70M or >25% market share40+ working days Phase I
CFIUSUS national securityForeign acquirer + sensitive tech/data45 days initial review
§ 02

A Second Request from the DOJ/FTC is the antitrust equivalent of a serious investigation. It adds 6–12 months to the timeline and signals regulators see potential competitive harm. Many deals fail or require significant divestitures at this stage.

§ 03
When a major deal is announced, check: Do the companies compete directly? What’s their combined market share? Deals creating >30% market share in any segment face heightened scrutiny.
§ 04
Two of the three largest companies in an industry propose to merge. They receive a Second Request. What’s the likely outcome?
§ 05

Regulatory risk is the most underappreciated risk in deal analysis. Merger arb funds price it carefully because blocked deals cause immediate 20–40% losses. When in doubt, favor the regulator’s perspective over the CEO’s confidence.

§ 06
A tech company announces acquisition of competitor. Stock surges on synergies. 18 months later: FTC blocks deal + files antitrust suit. What's the base rate for tech M&A in 2024?
Five questions · AI feedback

Sit with the ideas.

Two large grocery chains (each with ~15% national market share) announce a merger. The FTC opens a review. In which overlapping local markets, the combined entity would have 45-60% share. What is the most likely regulatory outcome?

Why:
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