SX Capital Japan

What SX Capital Japan does

SX Capital Japan (株式会社SXキャピタル) is a Tokyo-based private venture capital firm that invests in early to mid-stage unlisted IT-related venture companies in Japan. Founded on August 28, 2000, originally as Intec IT Capital (株式会社インテック・アイティ・キャピタル), the firm underwent a management buyout on September 30, 2016 and was rebranded to its current name; its shareholders today comprise the management team and Sigmaxyz Holdings (株式会社シグマクシス・ホールディングス). The firm operates under Japan's Small and Medium Enterprise Investment Limited Partnership Act and has raised three fund vehicles to date: the Intec IT Investment Limited Partnership (2000-2009), the Intec IT 2nd Investment Limited Partnership (2008-2021), and the currently active SXC Investment Limited Partnership (2017-present). Limited partners consist of financial institutions and corporate entities, and the firm is audited by Deloitte Touche Tohmatsu (有限責任監査法人トーマツ).

The firm's core product is investment fund management combined with post-investment growth support. Beyond equity capital, SX Capital provides portfolio companies with hands-on value-up support spanning business strategy, marketing, sales, PR communications, HR, and finance, delivered through an ecosystem centered on its strategic partner Sigmaxyz — a major consulting firm that operates as a Google Cloud Platform service partner and a DataRobot consulting partner in the AI domain. This capital-plus-consulting model differentiates SX Capital from pure financial investors. The portfolio spans at least 15 disclosed companies across AI (Empath, Wellmo, Poetics), real estate tech (Leeweays, Housmart), SaaS (BlueMeme, Airhost, Spacee), logistics (DoraEVER), circular economy (Farmer Station), blockchain (Startbahn), and financial services (Risk Monster, Capital Asset Planning), with realized exits including IPOs on TSE Mothers/JASDAQ (Planet 2004, Risk Monster 2005, Wireless Gate 2012, Metaps 2015, Capital Asset Planning 2016, BlueMeme 2021) and trade sales to larger corporates (Housmart to GA Technologies/Itanji 2023; Poetics to Knowledge Works 2025; Leeweays to Toggle Holdings 2025).

SX Capital's revenue mechanics follow the standard venture capital model: management fees charged against LP commitments in the active SXC fund, plus capital gains (carried interest and direct equity gains) realized from portfolio exits via IPO or trade sale. Pricing and fee terms are negotiated privately with LPs and are not publicly disclosed. The firm employs 1-10 people and is headquartered at Akasaka Park Building, Minato-ku, Tokyo, with a registered address at Toranomon Towers Office in the same ward.

Name

SX Capital Japan

Legal name

株式会社SXキャピタル (SX Capital, Inc.)

Website

https://sxcapital.jp

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

1–10 employees

Short description

SX Capital Japan is a Tokyo-based private venture capital firm, founded in 2000, that invests in early to mid-stage unlisted Japanese IT-related startups, providing equity capital plus consulting-grade growth support through its strategic ecosystem partnership with Sigmaxyz.

Ownership category

akta.pro rank

Product category

Venture Capital

NAICS

Other Financial Investment Activities (5239), All Other Financial Investment Activities (52399), Portfolio Management and Investment Advice (52394)

SIC

Investment Advice (6282)

akta.pro primary industry

Equity Capital Advisory (Private Equity Placements, Growth Capital) (BPAHAOAE)

akta.pro secondary industries

Capital Raising Advisory (Equity & Equity-Linked) (FSAEAGAC), Venture Capital Fundraising Placement (FSAEALAC)

Keywords

• Venture capital investing
• IT startup investment
• Fund management services
• Portfolio growth support
• Unlisted equity investment

Headquarters

HQ city

Toranomon

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Investment Returns and Management Fees: SX Capital generates returns through capital gains realized upon exits of portfolio companies (via IPO, M&A, or trade sales), as is standard for a venture capital fund manager. The firm also earns management fees from operating its investment fund vehicles (SXC Investment Business Limited Partnership, Intack IT Investment Limited Partnership, and Intack IT 2nd Investment Business Limited Partnership).

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

SX Capital Japan operates venture capital funds (SXC Investment Business Limited Partnership and predecessor funds) that invest equity capital in unlisted IT-related venture companies in Japan. Beyond capital, the firm provides post-investment value-up support covering business strategy, marketing, sales, PR communications, HR, and finance, delivered through an ecosystem anchored by its strategic partnership with Sigmaxyz, a major consulting firm.

Product overview

SX Capital Japan is a venture capital firm that operates as a single unified investment business rather than a platform-plus-modules architecture. The firm manages multiple investment funds (SXC Investment Limited Partnership, Intel Tech IT Investment Limited Partnership series) and provides growth support services including business strategy, marketing, sales, PR communications, HR, and finance support to portfolio companies through its ecosystem with strategic partner SIGMAXYZ. The firm does not offer a traditional SaaS product but rather investment and portfolio support services to unlisted IT-related venture companies.

Differentiator

Problem solved

Functional benefit

Products and services

• Investment Fund Management Services

Quantifiable outcome

• Multiple portfolio companies have achieved IPO on the Tokyo Stock Exchange (including BlueMeme on Mothers market in June 2021, Metaps on Mothers in August 2015, Planet on JASDAQ in February 2004, Risk Monster on Hercules in March 2005, Wireless Gate on Mothers in July 2012 with subsequent TSE First Section upgrade, and Capital Asset Planning on JASDAQ/Second Section/First Section)

Segments1 record

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• Sigmaxyz Inc. (株式会社シグマクシス)coreStrategic or Co-development PartnerSigmaxyz is SX Capital's primary strategic partner for the growth support ecosystem. Sigmaxyz provides portfolio companies of SX Capital with professional services spanning strategy formulation, M&A advisory, IT systems, technology implementation, project management, and new business development. In the AI domain, Sigmaxyz operates as a Google Cloud Platform service partner and a DataRobot consulting partner. The partnership enables SX Capital to offer consulting-grade operational support to its portfolio companies, differentiating its investment offering from pure financial investors.

Scale indicators2 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• JAFCO Group: Japan's largest venture capital firm with broad stage and sector coverage across IT and life science; comparable as a domestic VC with a long IPO track record, but operates at much greater scale than SX Capital.
• Salesforce Ventures: Corporate venture arm of Salesforce investing in enterprise SaaS and AI globally; comparable as a strategic CVC with portfolio support capabilities, though at vastly greater scale.

Direct peers

• Global Brain: Tokyo-based VC investing in early-to-mid-stage Japanese tech startups with multiple IPO exits; the closest direct peer in mandate, scale, and stage focus to SX Capital.
• Coral Capital: Japan-focused early-stage VC with strong seed-to-Series A pipeline and portfolio support services; comparable mandate and similar boutique scale to SX Capital.
• ANRI: Tokyo-based early-stage VC investing in Japanese startups across SaaS, AI, and consumer; similar stage focus and IT/vertical breadth as SX Capital.
• World Innovation Lab (WiL): Japan- and US-focused VC investing in enterprise IT and cross-border opportunities; comparable as a Japanese-anchored IT VC, though WiL operates with larger funds and global reach.
• Incubate Fund: Japan-focused seed and early-stage VC with multiple funds and a broad IT portfolio; directly comparable in stage focus and domestic-only mandate.
• DNX Ventures: Japan-US B2B-focused early-stage VC investing in enterprise SaaS and deep tech; comparable stage and IT focus with a complementary cross-border angle.

Regional players

• DCM Ventures: US-Japan cross-border VC with strong enterprise and consumer IT portfolio; comparable as an IT-focused VC with a Japanese presence, though DCM is larger and US-headquartered.

Others

• SIGMAXYZ Holdings: Strategic shareholder and ecosystem partner of SX Capital, providing consulting-grade portfolio support; comparable as the operating partner that enables SX Capital's differentiated value-up offering.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/sxcapital

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

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

M&A

Investments16 records

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

Frequently asked questions about SX Capital Japan