Funding
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Hudson River Trading

Activity from announced rounds

Activity in this selectionUnited States · Oct 9, 2026 · Sep 10, 2026

Hudson River Trading is the investor identified by co-investor announcements for Eridu and PicoJool.

Recorded funding activity

PicoJool builds optical chips and transceiver modules for data-center connections. Polaris develops optical interconnects, while Positron develops inference hardware and software. These covered companies address different parts of high-performance computing systems.

Sources
Rounds participated in
3
Confirmed lead rounds
0
All roles disclosed
New companies
3
First participation on record · 0 follow-on
Funding in participating rounds
$77.5M
2 disclosed · full round size, not this investor’s share

By stage

Series A1
Series B1
Series C+1

By primary sector

Hardware3

By country

United States3

Rounds

3 in this selection
PicoJool

PicoJool develops optical chips and transceiver modules for high-bandwidth, low-power connections in AI data centres.

$27.5MSeries A
Participant
Polaris Electro-Optics

Optical interconnect technology for moving data between AI and data-center systems with lower power consumption.

$50MSeries B
Participant
Positron AI

Positron AI develops memory-focused hardware and software for large-language-model inference.

≤$875MSeries C and Series C-1 financing package
Participant