Sigma Partners

Venture Capital

Early-stage venture capital firm founded in 1984 in Menlo Park, CA, focused on technology entrepreneurs.

Profile

Investments
1
Companies
1

Capital

Total Deployed
$1M
Lead Rounds
0
Website
www.sigmapartners.com

Portfolio

1 company
Pindrop $312M
Private Atlanta, Georgia, United States

Voice security and authentication company that uses AI and machine learning to detect phone fraud, verify caller identity, and protect against voice deepfakes. Its patented Phoneprinting technology analyzes audio signals to determine call provenance, device type, and caller location.

Investment data is compiled from multiple independent sources including company announcements, press coverage, and regulatory filings. While we strive for accuracy, amounts and dates may reflect reported figures at time of announcement.