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Lampf v. John Gilbertson

501 U.S. 350 · Decided June 20, 1991 · Supreme Court of the United States

Record summary. This page is generated from the Supreme Court Database’s coded data about the case. It describes who decided what, not the Court’s reasoning. Read the opinion itself before relying on it. Not legal advice.

At a glance

Lampf v. John Gilbertson was decided on June 20, 1991 by a vote of 5–4. The Court reversed the lower court's decision. Justice Harry A. Blackmun wrote the opinion of the Court. SCDB classifies its main issue as “Securities regulation” in the Economic Activity area.

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Case details

Citations
501 U.S. 350 · 111 S. Ct. 2773 · 115 L. Ed. 2d 321 · 1991 U.S. LEXIS 3629
Docket number
90-333
Decided
June 20, 1991
Argued
February 19, 1991
Decision type
Opinion of the Court (orally argued)
Disposition
Reversed
Outcome for petitioner
The petitioning party received a favorable disposition
Vote
5–4
Majority opinion
Harry A. Blackmun
Opinion assigned by
William H. Rehnquist
How the case arrived
Certiorari
Legal provision
Securities Act of 1933, Securities Exchange Act of 1934, or Williams Act
Type of law
Federal statute
Decision direction (SCDB)
Conservative what this means

How the Justices voted

JusticeVoteSeparate writing
Justice Byron R. WhiteMajority
Justice Thurgood MarshallMajority
Justice Harry A. BlackmunMajorityWrote an opinion
Chief Justice William H. RehnquistMajority
Justice John Paul StevensDissentWrote an opinion
Justice Sandra Day O'ConnorDissentWrote an opinion
Justice Antonin ScaliaSpecial concurrenceWrote an opinion
Justice Anthony M. KennedyDissentWrote an opinion
Justice David H. SouterDissent

Full case caption

Lampf, Pleva, Lipkind, Prupis & Petigrow v. John Gilbertson, et al.

SCDB identifiers: case 1990-110, docket 1990-110-01.

Other cases on “Securities regulation”

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Cases on the same legal provision: Securities Act of 1933, Securities Exchange Act of 1934, or Williams Act

Same Term, same area (Economic Activity)

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Source: Supreme Court Database, 2026 Release 01 (data file dated September 8, 2026). Imported into CaseTrail November 5, 2026. Coverage: decisions from the 1946 through 2025 Terms. Methodology · Report an error