St. John's Law Review

Unclear Repugnancy: Antitrust Immunity in Securities Markets After Credit Suisse Securities (USA) LLC V. Billing

By Justin Lacour

The application of antitrust laws to industries subject to federal regulation has long been a difficult issue for courts.  A court must determine whether a regulatory statute—either expressly or by implication—repeals the antitrust laws.  Although there have been differing approaches to finding implied immunity, courts have held that there must be a “clear repugnancy” or conflict between the regulatory system and antitrust laws.  The regulatory scheme must permit an activity that the antitrust laws forbid.

In Credit Suisse Securities (USA) LLC v. Billing (“Billing”), the Supreme Court considered the issue of whether there was a clear repugnancy between antitrust and securities laws.  Although both the regulatory scheme and antitrust laws prohibited the activity in question, the Court still found a conflict between securities and antitrust laws.  In determining that antitrust laws were “irreconcilable” with the securities laws the Court looked chiefly at the potential difficulties for judges and juries in resolving such issues, as opposed to the SEC, as well as applying a cost-benefit analysis for antitrust enforcement.

This Note argues that a “clear repugnancy” does not exist when both the SEC and antitrust laws prohibit the activity in question.  In reaching its finding of implied immunity, Billing departed from the principles of traditional immunity analysis to create a new, outcome-determinative test for repugnancy.  This approach—that a repugnancy exists when there is the potential for conflicting outcomes from lower courts—is an unprecedented broadening of the implied immunity doctrine.  For a conflict to exist, the two laws must produce “differing results.”  Billing is more properly understood as an extension of the Court’s policy animus against private securities actions rather than a continuance of earlier antitrust immunity analysis.  The altering of immunity analysis to further that goal represents an unprecedented block on a party’s ability to get to court that will be felt far beyond the world of underwriters and IPOs.