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SIG
SIG is a asset manager based in Birmingham, founded 1987; the Altss profile covers its classification, headquarters, registration, AUM band, and key contacts...
SIG
SIG is an SEC-registered investment adviser with its office in Birmingham, AL, registered since 2026.
General information
Firm type
Asset Manager
Year founded
1987
Location
Region
North America
Country
United States
City
Birmingham
Corporate office
Portola Valley, CA, United States
Additional offices
Philadelphia, PA · London, UK · Dublin, Ireland · Tel Aviv, Israel · Shanghai, China
Principals
Jeff Yass
Co-Founder & Managing Director
Arthur Dantchik
Co-Founder & Managing Director
Steven Schuler
CEO, SIG Management
Michael Blaugrund
COO, SIG Management
Sector focus
Frequently asked questions
Who runs investment decisions at SIG?
Jeff Yass and Arthur Dantchik serve as Co-Founders and Managing Directors. Steven Schuler is CEO of SIG Management, the firm's administrative entity, and Michael Blaugrund is COO. The partnership votes on major capital allocation decisions. Investment teams at Susquehanna Growth Equity and the venture arm operate semi-autonomously with oversight from the partnership.
Is SIG structured as a family office or a hedge fund?
SIG is neither — it is a proprietary trading firm structured as a limited partnership. The firm does not manage outside capital. Its profits are distributed to partners, who collectively control the capital. SIG's private equity (SGE) and venture arms invest the partnership's own money.
How does SIG source proprietary deal flow?
SGE sources deals primarily through its network of operating partners and industry executives, many of whom are former SIG employees. The firm's roots in financial technology and market structure give it unique insight into payment rails, exchanges, and financial infrastructure. SGE often takes minority stakes with board seats.
What investment stages does SIG target via SGE?
Susquehanna Growth Equity typically invests in growth-stage technology companies, from Series B to pre-IPO. The venture arm covers earlier stages. SGE has raised $3.25B across six funds, with check sizes ranging from $20M to $100M. The firm will hold positions for five to seven years.
Does SIG participate in fund commitments or only direct deals?
SIG does not commit to outside third-party funds as a traditional LP. All investing is direct, through SGE, Susquehanna Venture Capital, or the firm's internal hedge fund and trading strategies. The partnership does occasionally co-invest alongside other families or institutions in specific deals.
What sectors does SIG explicitly avoid?
Publicly, SIG has not declared any prohibited sectors. However, SGE's known portfolio avoids early-stage biotech, hard tech, and regulated industries outside financial services. The firm is cautious on consumer-facing winners-take-most markets because of its quantitative, data-driven approach.
Where does the underlying wealth come from?
The wealth originates from SIG's proprietary market-making in exchange-traded options, which the founders started in 1987. The firm has never exited by selling equity or taking on outside capital. Partners' profits from this trading business are the single source of capital for all investment activities.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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