Funding
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Hudson River Trading

Activity from announced rounds

Activity in this selectionUnited States · Oct 23, 2026 · Jan 1, 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
5
Confirmed lead rounds
0
1 roles undisclosed
New companies
5
First participation on record · 0 follow-on
Funding in participating rounds
$577.5M
4 disclosed · full round size, not this investor’s share

By stage

Series A2
Series B2
Series C+1

By primary sector

Hardware3
AI2

By country

United States5

Rounds

5 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
Gimlet Labs

Provides a cloud inference platform and compiler that distribute AI workloads across different processor types.

$300MSeries B
Participant
Eridu

Develops purpose-built networking silicon and systems for AI data centers and hyperscalers

$200MSeries A
Role not disclosed