BIG Fiber
PrivateLast Round
Debt
May 19, 2026
Total Funding Raised
$390M
Momentum
Top 5%
of companies Caplight tracks
Company Overview
BIG Fiber is a digital infrastructure company that builds and operates high-capacity, 100% underground dark fiber networks for data centers, hyperscalers, and enterprises.
Sector
Telecommunications & Networking
Verticals
Fiber Networks, Cloud Infrastructure, Internet Providers, Private Networks
Business Model
B2B
Customer Profile
Services & Consulting
AI Layer
Infrastructure
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
BIG Fiber Comparables
Compare BIG Fiber with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| SummitIG | 90% | |
| FiberLight | 78% | |
| FirstLight Fiber | 77% | |
BIG Fiber Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Debt | May 19, 2026 | ||||
| Debt | Jun 10, 2025 | ||||
| Debt | May 9, 2024 | ||||
| Private Equity | Oct 1, 2020 |
Key People
Founding team and executive leadership
BIG Fiber Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Columbia Capital | Debt |
| Caisse de dépôt et placement du Québec | Debt |
| SDC Capital Partners | Debt, Private Equity |
| ING Capital LLC | Debt |
| Third Coast Bank | Debt |
| Stonepeak | Debt |
Market signals
Structured signals derived from secondary market and firmographic data.
- May 20, 2026
Monthly visitors grew 100% MoM, reaching 2.8K.
- May 19, 2026
$250M round led by Stonepeak and CDPQ.
BIG Fiber Filings
SEC and related filings with document metadata.
| Typed | Date | Amount Offered | Amount Sold | Filling | Pages | Download |
|---|---|---|---|---|---|---|
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Frequently Asked Questions
Common questions about BIG Fiber's valuation, stock price, and market status.