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Nyxoah SA

NYXH on Nasdaq. Market value $136m.

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Should I look at this?

We have not checked this company yet

This is not advice.

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Who owns it

None of the long-term investors we follow own it. 45 funds in all.

Jun '25
Dec '25
Jun '26
Largest holders overall

From 13F filings for the quarter ended 30 June 2026.

Big holders and activists

4 investors own more than 5%.

  • Orin Hirschman
    Passive investor
    at least 14.5%
    (filed with 1 related holder)
    Since 10 June 2026
  • CVI Investments, Inc.
    Passive investor
    at least 9.9%0.0 pts
    (filed with 1 related holder)
    Since 30 June 2026
  • Cochlear Investments Pty Ltd
    at least 5.9%−7.7 pts
    (filed with 1 related holder)
    Since 10 June 2026
  • Vestal Point Capital, LP
    Passive investor
    at least 3.7%−2.5 pts
    (filed with 1 related holder)
    Since 30 June 2025
  • ResMed Inc.
    Passive investor
    Sold down below 5%
    Since 30 June 2026

From Schedule 13D and 13G filings: anyone owning more than 5% must file one.

What insiders did

We have no insider filings for this company yet.

From Form 4 filings: insiders must report trades in their own company's shares within two days.

Warning signs in its filings

Problems the company itself reported to the SEC, in its own words.

Nyxoah SA doesn’t file a US annual report (10-K), so we haven’t checked it.

A 10-K is the yearly report every US company files with the SEC. An 8-K is a short notice of a big event.

The deep dive

Everything above is arithmetic on public filings. The deep dive reads the last ten years of annual reports, the proxy statements, and the earnings calls, then argues the case the way Buffett, Klarman, and Hohn would, and checks every claim against the source.

  • What the business is worth, as a range, and the margin of safety at today’s price
  • Prices to start buying, buy, and buy hard
  • The three things that would make this a mistake
  • Every number footnoted to the filing it came from
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What a finished deep dive looks like

Not advice. Numbers on this page come from SEC filings and are updated each night; prices are updated again after the US market closes. The five-year figures are rounded.