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Company · London

Quant Sigma Limited

Quant Sigma Limited is an active UK company (number 13348199), incorporated 2021, with 3 current directors including Constantinos Victoros and Thomas Weidmann. Source: Companies House, updated 11th October 2026.

Other information technology service activities

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Official record Companies House · updated 11th October 2026 · Sources · Free, no card or password

Network

The large node is Quant Sigma Limited. Red nodes are organisations, white nodes are people. Dashed links are historical or inferred. Click any node to explore.

Who leads it

Previous officers 1

  1. Simon Hofmayer 2021-2023 Director View profile

Directors and secretaries as filed at Companies House.

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About

What it does
Other information technology service activities
Incorporated
21/04/2021
Registered office
London

Ownership

Owned by (1) iOwned byIndividuals and companies registered as having significant control over this company, from the Companies House PSC (persons with significant control) register. People whose ownership could not be confirmed to one individual are not listed as confirmed owners.

Group

  1. Quant Sigma Limited is controlled by Thomas Weidmann
    Evidence
    active 50-75% voting, appoints directors · notified 2021-04-21 · source: Companies House PSC register

Ultimately controlled by Thomas Weidmann.

5 other companies in this group

Ownership paths are calculated from Companies House persons-with-significant-control filings. Each step shows the filed nature of control and dates; a step marked "ceased" is historical, not current.

Board analysis

Board DNA

How this board is put together, from the Companies House officer record and Charity Commission trustee records - deterministic, no AI.iBoard compositionCounted from the dated Companies House officer record: the current directors only, past directors excluded.

3 directors on the board

4.2y median 5.5y
average tenure
5.5y
longest tenure
0
directors past 6 years

First-time vs portfolio directors

First-time (1)

Portfolio (2)

0
also govern a charity
0
left in the last 12 months

Where else this board sits iWhere else this board sitsThe charitable fields these directors govern in elsewhere, by Charity Commission classification. Excludes this company and any charity it is the legal face of.

Tech and media 4Property 2Construction 1Finance 1Other services 1Professional services 1

The sectors these directors govern in elsewhere. This company, and any charity it is the legal face of, are excluded - counting them would just tell you what you are already looking at.

Sources

Official record from Companies House. Governance Register calculates the connections.

Record details
Company number
13348199
Status
Active
Type
Private Limited Company
Accounts next due
31/12/2026
Edition
Register edition compiled 11th October 2026
Labels
Official record from Companies House · Calculated derived by Governance Register.

Contains public sector information licensed under the Open Government Licence v3.0. Report an issue · How we handle data