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IREN SCHEDULE 13G: SEC filing

Citadel entities and Kenneth Griffin

Filed with the SEC on · accession 0001104659-26-112411

IREN filed a SCHEDULE 13G (schedule 13g) with the SEC on Sep 30, 2026. A report the company filed with the SEC (the US market regulator). The stock moved -1.2% by the first close after the filing.

Summary of the filing

Citadel entities and Kenneth Griffin filed a joint Schedule 13G disclosing a passive ownership position in IREN Ltd. The filing includes a joint filing agreement executed by Citadel Securities LLC, Citadel Advisors LLC, and related entities.

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Key details

Issuer whose securities are subject to the 13g filingIREN Ltd
Joint filerCitadel Securities LLC
Joint filerCitadel Advisors LLC
Joint filerCitadel Securities Group LP
Joint filerCitadel Advisors Holdings LP
Joint filerCitadel Securities GP LLC
Joint filerCitadel GP LLC
Founder/principal, citadelKenneth Griffin
Authorized signatorySeth Levy

How IREN stock reacted

Close before

$41.38

Sep 29, 2026

First close after

-1.21%

$40.88

5 trading days

-0.24%

$41.28

Since filing

-47.70%

$21.64

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Frequently asked questions

What did IREN file with the SEC on Sep 30, 2026?

IREN filed a SCHEDULE 13G (SEC filing). Citadel entities and Kenneth Griffin filed a joint Schedule 13G disclosing a passive ownership position in IREN Ltd. The filing includes a joint filing agreement executed by Citadel Securities LLC, Citadel Advisors LLC, and related entities.

How do I read a SCHEDULE 13G?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13G (schedule 13g): A report the company filed with the SEC (the US market regulator).

How did IREN stock react to this filing?

IREN closed at $41.38 before the filing and $40.88 on Sep 30, 2026 (-1.21%). Five trading days later: $41.28 (-0.24%).

Other IREN SEC filings

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