What TETTERO does

TETTERO is a privately held, boutique art advisory and curation firm founded in 2010 by Siebe Tettero, an architect, museum curator, and former auction-house specialist. The firm operates worldwide with offices in Amsterdam (European headquarters), Hong Kong (Asia-Pacific), and New York, organized under TETTERO AMSTERDAM BV and TETTERO HK LIMITED. Its core service offering is the bespoke procurement, management, display, and trade of 20th and 21st century works of art for high-net-worth private collectors, complemented by art brokerage and the curation and design of private and public exhibitions for museums and cultural institutions.

The firm's product surface spans three core lines: private art collection services (formation, maintenance, and management), art brokerage (connecting buyers and sellers of specific works), and exhibition curation and design (including private residences and museum shows). Supporting services include privately funded artist research initiatives and architectural design for high-end private residences. A private, login-gated digital viewing platform is offered to clients. There is no proprietary technology stack in the conventional product sense; the offering is human-curatorial judgement applied to a high-touch service.

TETTERO's revenue model is professional services — fees from bespoke engagements rather than productized or self-serve offerings. Pricing is not publicly disclosed, and clients are acquired through relationship-driven, consultative engagement ('personal conversation') rather than active marketing. Distribution is exclusively direct; the firm relies on reputation, word-of-mouth, earned press, and a maintained Instagram presence. The named team is small (six individuals across three offices), and the firm is controlled by its founder, with no disclosed external investors, parent company, or funding rounds.

Name

TETTERO

Legal name

TETTERO AMSTERDAM BV

Website

https://tettero.net

Company type

Private

Founded year

2010

Operating status

Operating

Headcount range

1–10 employees

Short description

TETTERO is a privately held, boutique art advisory firm offering bespoke procurement, management, brokerage, and exhibition curation of 20th–21st century art for high-net-worth collectors, museums, and foundations across offices in Amsterdam, Hong Kong, and New York.

Ownership category

akta.pro rank

Headquarters

HQ city

Amsterdam

HQ country

Netherlands

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Art Advisory and Curation Services: TETTERO generates revenue through professional fees for bespoke art advisory services including the procurement, management, display, and trade of 20th and 21st century artworks for private collectors and institutions. Services include private collection formation and maintenance, brokerage of specific artworks, and realization of private and public exhibitions.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

TETTERO is an independent art advisory and curation firm that provides bespoke professional services covering the procurement, management, display, and trade of 20th and 21st century works of art. The firm brokers specific artworks, forms and maintains private collections, and realizes private and public exhibitions in the field of modern and contemporary art, with supporting offices in Amsterdam, Hong Kong, and New York.

Product overview

TETTERO operates as an art advisory and curation company offering a unified suite of services centered on the procurement, management, display, and trade of 20th and 21st century works of art. The core offering consists of Private Art Collection Services (for building and maintaining private collections), Art Brokerage (for acquiring specific artworks), and Exhibition Curation and Design (for realizing private and public exhibitions). These services are supported by a Private Viewing Platform — a client-only digital viewing portal — as well as Artist Research Initiatives and Private Residence Design services. The company operates globally with offices in New York, Hong Kong, and Amsterdam, serving private clients across Europe, the United States, and Asia.

Differentiator

Problem solved

Functional benefit

Products and services

• Private Art Collection Services
• Art Brokerage
• Exhibition Curation and Design
• Private Viewing Platform
• Artist Research Initiatives
• Private Residence Design

Quantifiable outcome

• Worldwide operations with offices in New York, Hong Kong, and Amsterdam serving clients globally
• +1 more outcomes

Named customers16 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Seven partnerships are on record, tiered core, major and minor.

• Verbier Art SummitcoreStrategic or Co-development Partner · 1 January 2014Since its inception in 2014, Siebe Tettero has been involved in the development of the Verbier Art Summit, an annual debate between art and humanities professionals, scientists, and art patrons held each January in Verbier, Switzerland. Siebe Tettero serves on the Board of Advisors. The 2020 summit was curated by Nathalie De Gunzburg and Director Jessica Morgan of New York's Dia Art Foundation, asking how to envision harmony between art, ecology, and resources.
• The Temporary Center FoundationcoreStrategic or Co-development PartnerThe Temporary Center is initiated by art historian and architect Siebe Tettero. The center investigates contemporary art through the lens of impermanence and supports artists investigating this premise. Its center will be wherever artists and initiatives arise.
• Khalili FoundationmajorStrategic or Co-development PartnerTETTERO curated the 'Passion for Perfection' exhibition featuring 500 works from the Khalili Collection of Early Islamic Art at De Nieuwe Kerk, Amsterdam (December 2010 - April 2011). Professor Nasser D. Khalili's foundation supports global movements to advance peace, unity, and mutual respect.
• De Nieuwe KerkmajorStrategic or Co-development PartnerOngoing partnership with De Nieuwe Kerk, Amsterdam for exhibition curation. Notable collaborations include 'The Life of the Buddha | Buddha's Garden' (September 2018 - January 2019) and 'Passion for Perfection' (December 2010 - April 2011). Dalai Lama personally loaned a unique Thangka to the Buddha exhibition.
• LUMA FoundationminorStrategic or Co-development PartnerMaja Hoffmann, founder of the LUMA Foundation, participated in the 2020 Verbier Art Summit dialogues with Siebe Tettero.
• Asia Europe FoundationminorStrategic or Co-development PartnerTETTERO's involvement in the 2nd Anren Biennale in Szechuan, China was covered by Culture360, the platform of Asia Europe Foundation.
• Oversees Chinese Town Enterprises OCT, ShenzenmajorStrategic or Co-development Partner2nd Anren Biennale was a project of Oversees Chinese Town Enterprises OCT, Shenzen, Guangdong Province, People's Republic of China. TETTERO co-curated the Biennale examining diversity of languages artists employ in reflecting on a multi-polar world order.

Scale indicators3 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Hauser & Wirth: Major international gallery with locations across Europe, the Americas, and Asia, providing primary-market access and long-term advisory relationships with major collectors — comparable to TETTERO in terms of tri-continental footprint and HNW client work, but at gallery scale.
• Christie's: Major international auction house running a private sales and advisory business for collectors — competes with TETTERO for the same ultra-HNW client base seeking primary and secondary market works, with the added advantage of marquee auction events and consignment inventory.
• Sotheby's: Global auction house with a substantial private advisory, private sales, and financial services division serving HNW collectors — directly comparable to TETTERO's advisory and brokerage services, but operating at vastly larger scale with proprietary inventory and auction infrastructure.
• Gagosian: Largest global contemporary art gallery representing blue-chip artists and advising top collectors — overlaps with TETTERO on advisory to HNW collectors and on primary-market access, though Gagosian's scale and artist roster are vastly larger.
• Phillips: Auction house strong in contemporary art, 20th-century design, and editions, with growing private sales — comparable to TETTERO's 20th/21st-century focus and serves an overlapping collector segment globally.
• Pace Gallery: Global contemporary and modern art gallery with locations in New York, London, Hong Kong, Seoul, Tokyo, Geneva, and Los Angeles — operates in the same tri-continental footprint and 20th/21st-century collecting space as TETTERO, often serving the same institutional and private clients.

Direct peers

• The Fine Art Group: Independent art advisory and finance firm providing collection advisory, art-backed lending, and related services to HNW collectors and institutions — a directly comparable independent advisory competitor with overlapping service lines.
• Artvest Partners: Art advisory and investment firm serving collectors and institutions with advisory, collection management, and art-investment mandates — directly comparable in segment (HNW collectors, foundations) and independent positioning.
• Art Agency Partners: Boutique art advisory firm specializing in private sales, collection advisory, and art-related financial services for collectors, estates, and foundations — directly comparable independent-advisory model to TETTERO, including estate and foundation work.
• Gurr Johns: Independent art advisory firm offering collection management, valuation, buying, and selling services to private collectors and institutions — the closest pure-play comparable to TETTERO in terms of business model, independence from auction houses, and HNW client focus.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Instagraminstagram.com/tettero
• LinkedInlinkedin.com/company/tettero

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about TETTERO