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Single Family OfficePuts its own capital into companiesLAST VERIFIED Oct 2026 · 3 SOURCES

Security Trading

Helsinki family investment company controlled by Antti Herlin and his children; active owner of KONE, investing across asset classes with a sustainability lens.

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Family & background

FAMILY
Herlin
WEALTH ORIGIN
Controlling stake in KONE Corporation (elevators and escalators)
HEADQUARTERS
Helsinki, Finland
FOUNDED
2005

Investment approach

ROUTES
Companies (own capital)
STRATEGIES
Public equities

Overview

Security Trading Oy is a Helsinki-based family investment company. KONE states that Antti Herlin holds 56.4% of its shares and, together with his children, 99.9%, and that Security Trading is part of his controlling stake in KONE Corporation. The company describes itself as an active owner of KONE that invests across asset classes, using an investment framework based on planetary boundaries and its own sustainability criteria for listed companies.

Investment thesis

Investment framework based on the planetary boundaries framework; own sustainability criteria for listed companies covering climate action, wider impact on nature, and diversity and inclusion.

Holdings & investments (1)

People

  • Outi Helenius
    Director, Investments, Impact and ESG · source
  • Iivo Paukkeri
    Director, Investments · source
  • Georgi Agiashvili
    Portfolio Manager · source
  • Antti Herlin
    Controlling owner · source
  • Niina Vilske
    CEO · source

Frequently asked questions

Security Trading is a single family office based in Helsinki, Finland, founded in 2005.

Security Trading invests on behalf of the Herlin family (Controlling stake in KONE Corporation (elevators and escalators)).

Security Trading invests its own capital into companies. Its stated asset mix includes public equities.

Security Trading invests in Climate & Energy and HealthTech.

Key people at Security Trading include Antti Herlin (Controlling owner), Niina Vilske (CEO), Outi Helenius (Director, Investments, Impact and ESG) and Iivo Paukkeri (Director, Investments).

Security Trading's holdings and investments include KONE Corporation.