Supreme Court bars private lawsuits under the 1940 mutual fund law

Overview

Updated Jun 11

For decades, investors could sue a mutual fund directly to undo contracts that broke federal fund law. On June 11, 2026, the Supreme Court closed that door. By a 6-3 vote, the justices ruled that ordinary investors have no right to sue under the Investment Company Act of 1940, the law that governs mutual funds and similar pooled investments.

Enforcement now rests almost entirely with one regulator: the Securities and Exchange Commission. The decision ends a campaign by hedge fund Saba Capital, which had used the courts to strike down fund rules that capped its voting power. Fund managers won a shield. Activist investors lost a tool.

Why it matters

If you own a closed-end fund, the SEC, not activist investors, is now the main check on a manager who breaks the 1940 law.

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Key Indicators

6-3

Court vote

The justices split along ideological lines, with Barrett writing for the majority.

86 years

Age of the law

The Investment Company Act was signed in 1940 and had never been read this way by the high court.

Funds Saba sued

Saba Capital won against eleven closed-end funds in lower courts before the reversal.

~$250B

Closed-end fund market

Roughly the total assets held in U.S. closed-end funds, the corner of the market this fight centered on.

Voices

Curated perspectives — historical figures and your fellow readers.

Ever wondered what historical figures would say about today's headlines?

People Involved

Amy Coney Barrett

Associate Justice, author of the majority opinion

Wrote the 6-3 opinion reversing the lower courts

Ketanji Brown Jackson

Associate Justice, author of the dissent

Dissented, joined by Sotomayor in full and Kagan in part

Boaz Weinstein

Founder and chief investment officer, Saba Capital

Vowed to keep challenging fund managers through other laws

Organizations Involved

Saba Capital Management

Hedge Fund

Lost its main legal weapon against fund managers

A New York hedge fund known for buying stakes in undervalued closed-end funds and pressuring managers to raise returns.

Investment Company Institute

Industry Trade Group

Welcomed the ruling on behalf of the fund industry

The main trade group for U.S. mutual funds and other registered investment funds.

U.S. Securities and Exchange Commission

Federal regulatory agency

Now the primary enforcer of the Investment Company Act

The federal regulator that oversees securities markets and now carries near-sole responsibility for enforcing the 1940 fund law.

Timeline

August 1940 June 2026

5 events Latest: June 11th, 2026 · 3 months ago

Tap a bar to jump to that date

June 2026
Court bars private lawsuits, 6-3
Latest Ruling

Barrett's majority holds the Act creates no implied private right of action, reversing Saba's wins and leaving enforcement to the SEC.
June 11th, 2026
December 2025
Justices hear oral argument
Legal

The Court probes whether Section 47(b)'s text lets investors file suit or only guides judges in cases already before them.
December 10th, 2025
June 2025
Supreme Court agrees to hear the case
Legal

The justices grant review to settle a split among lower courts over whether the 1940 law allows private lawsuits.
June 30th, 2025
June 2024
Appeals court sides with Saba Capital
Legal

The Second Circuit affirms a New York district court, agreeing Saba could sue to void fund rules that capped its voting power.
June 26th, 2024
August 1940
Congress passes the Investment Company Act
Legislation

The law sets rules for mutual funds and other pooled investments, including a requirement that every share carry equal voting power.
August 22nd, 1940

Scenarios

Saba sues again under different laws

Likely Resolves by Jun 11, 2027

Discussed by: Boaz Weinstein in his statement on the ruling; Reuters and CNBC coverage

Weinstein said the fight is not over. Saba could file fresh suits against closed-end funds using state corporate law or other parts of the 1940 Act that the ruling did not address. A new complaint would test how far the decision actually narrows activist options.

More funds adopt anti-activist voting rules

Possible Resolves by Jun 11, 2027

Discussed by: Bloomberg Law and fund-industry analysts at Alston & Bird and Goodwin

With the threat of private suits gone, closed-end funds may feel freer to adopt control-share provisions that cap large holders' votes. A wave of such filings would show managers using their new legal cover to entrench against activists.

SEC brings a fund-governance enforcement case

Uncertain Resolves by End of 2027

Discussed by: Jackson's dissent, which questioned whether the agency can fill the gap

The dissent argued the SEC lacks the resources to police every violation private suits once caught. If the agency brings an enforcement action over closed-end fund voting rules, it would test whether regulator-only enforcement can match what private litigation did.

Congress moves to restore the private right

Unlikely Resolves by Jan 3, 2028

Discussed by: Investor-advocacy groups; echoed in Jackson's call that Congress, not the Court, should decide

Lawmakers could amend the Investment Company Act to write in an explicit private right of action, undoing the ruling. Given a divided Congress and industry opposition, a bill clearing committee, let alone passing, faces long odds.

Historical Context

3 moments from history that rhyme with this story — and how they unfolded.

June 1979

Touche Ross & Co. v. Redington (1979)

The Court held that Section 17(a) of the Securities Exchange Act gave investors no private right to sue an accounting firm. The provision set recordkeeping duties but said nothing about who could enforce them in court.

Then

Investors lost a path to sue auditors directly under that section.

Now

It marked the Court's shift away from freely implying private remedies in securities laws.

Why this matters now

Like Section 47(b), the provision in Touche Ross was about duties and remedies, not lawsuits. The Court again declined to read a right to sue into silence.

April 2001

Alexander v. Sandoval (2001)

The Supreme Court ruled 5-4 that private individuals could not sue to enforce disparate-impact rules under Title VI of the Civil Rights Act. Justice Scalia wrote that courts should not invent private lawsuits Congress did not clearly create.

Then

The decision shut down a common route civil-rights plaintiffs had used against state agencies.

Now

It set the modern test: courts presume no private right of action unless the statute's text plainly grants one.

Why this matters now

Sandoval is the doctrine Barrett applied. Both cases turn on the same question: did Congress actually authorize private suits, or did courts read them in?

January 2008

Stoneridge Investment Partners v. Scientific-Atlanta (2008)

The Court ruled 5-3 that investors could not sue a company's suppliers and customers for helping it commit securities fraud. It narrowed who counts as a defendant under the main antifraud rule.

Then

Third parties such as vendors and banks gained protection from private fraud suits.

Now

It reinforced a trend of limiting private securities litigation and leaning on the SEC to pursue secondary actors.

Why this matters now

Stoneridge shows the same pattern: the Court trims private suits and points plaintiffs toward the regulator, exactly the shift this ruling makes for fund law.