1517 Fund

Tracked participation in 2 Atlas companies, with 0 explicitly attributed leads.

2portfolio companies

3round participations

0lead positions

Feb 2026latest activity

Capital activity

Portfolio

CompanyLatest valuationFirst → latestRoundsRoleAttributed partner

PPositron$1BJul 2025 → Feb 20262 roundsParticipant—

LLambda$1.5BFeb 2024 → Feb 20241 roundParticipant—

DateCompanyRoundRaisedValuationRoleEvidence

Feb 04, 2026PPositronSeries B$230M$1BParticipant

Jul 28, 2025PPositronSeries A$51.6M—Participant

Feb 15, 2024LLambdaSeries C$320M$1.5BParticipant

DateCompanyRoundRaisedValuationRoleEvidence

Feb 15, 2024LLambdaSeries C$320M$1.5BParticipant

Feb 04, 2026PPositronSeries B$230M$1BParticipant

Jul 28, 2025PPositronSeries A$51.6M—Participant