Registered entities
Stack Overflow GmbH
Reg. No. D2601_HRB234500Germany
STACK EXCHANGE, INC.
Reg. No. 272445468United States
STACK EXCHANGE, INC.
Reg. No. 10027616United States
INVALAS, s.r.o.
Reg. No. 28742141Czech Republic
JDK Management s.r.o.
Reg. No. 21396973Czech Republic
AG Line, a.s.
Reg. No. 46357327Czech Republic
Reputation
Customer rating 1.7 / 5 across 226 reviews.
Web presence
Audience by country — top 5 markets by share of visits.
| Country | Share |
|---|---|
| United States | 22.7% |
| India | 7.8% |
| Germany | 6.7% |
| United Kingdom | 5.4% |
| Russian Federation | 5.2% |
Social engagement
Social engagement: 1.6M social following, 10 posts in the last 12 months — below the industry typical range.
Investor mix
20 investors on record; lead investors include Union Square Ventures, Index Ventures, Andreessen Horowitz, GIC; 2 have since exited.
| Investor type | Count | Share |
|---|---|---|
| Venture capital | 10 | 50% |
| Private equity | 2 | 10% |
| Other / undisclosed | 8 | 40% |
Share of voice
Share of voice in United States: 4.3% of web traffic across its competitive set; worldwide: 3.3%.
Recent activity
24 Jun 2026
Product launch
Stack Overflow for Agents