Private investorRegistered location :Erlenbach, CH

Martin HaefnerDeclared Swiss shareholdings

Martin Haefner: 4 Swiss companies with a declared holding, including Swiss Steel Holding AG, Rieter Holding AG, Jungfraubahn Holding AG. Latest filing: 09.04.2026.

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Estimated value (CHF): …
Swiss companies held: 4
Largest position: 87,65 %; Swiss Steel Holding AG
12-month trend: Net reducer; 0 rate rises · 1 rate falls
Latest filing: 09.04.2026; Active since 2013

Declared Swiss portfolio

Latest declared rate per company

Sector allocation

Share of companies held

Swiss Steel Holding AG

87,65 %08.05.2025

Rieter Holding AG

17,39 %09.04.2026

Jungfraubahn Holding AG

5,2 %04.05.2024

Autoneum Holding AG

3,1 %01.07.2022

How to read these figures?

Rates come from the 28 official filings published by SIX Exchange Regulation. A filing is only required when a threshold is crossed (3, 5, 10, 15, 20, 25, 33⅓, 50, 66⅔%): the actual position may have changed since.

Estimated value = shares held per the latest filing × latest CHF closing price. It is an indicative order of magnitude: the position may have changed without a new threshold being crossed, and holdings without a share count or a CHF price are not valued. Each company's mini-chart traces the successive declared rates.

This profile shows only what the declarant published. No external data is added to it.

Group structure

Shareholding disclosures are often filed jointly by several entities of the same group. The registry links them together: "Controls" lists the group entities declared alongside this shareholder, "Controlled by" the head entities. The figure is the number of joint disclosures, followed by the date of the most recent one.

Show group structure4 controls

Controls

Group entities linked to this shareholder in joint disclosures.

BigPoint Holding AG17 · 09.04.2026
GravelPoint Holding AG3 · 08.05.2025
PCS Holding AG3 · 03.04.2026
Swiss Steel Holding AG1 · 08.05.2025

This mapping reflects observed disclosures; it does not necessarily indicate permanent legal control.

Disclosure behaviour

Upward and downward threshold crossings show direction, without measuring daily trades below legal thresholds.

90 days · Upward crossings

visible history: 20

90 days · Downward crossings

visible history: 0

First disclosure: 05.10.2013Last disclosure: 09.04.2026

Nature of disclosed positions

Derivatives, sale positions or lending may indicate a more complex strategy than a long equity holding.

Equity holdings

Rights / derivatives

Sale positions

Securities lending

Other positions

Declared Swiss portfolio

Sector allocation

Group structure

Controls

Disclosure behaviour

Nature of disclosed positions

Latest shareholding disclosures

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