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Schedule 13G

GRDX Schedule 13G filing by Renaissance Technologies

Renaissance Technologies reported beneficial ownership of 86.4K shares, representing 5.44% of GridAI Technologies Corp. in this filing.

FiledNov 13, 2025
Ownership dateSep 29, 2025
Reported shares86.4K
Reported ownership5.44%
Ownership details

Voting and dispositive power reported in the filing

These figures describe the reporting filer’s disclosed voting and investment authority. They should be read together with the reported share count and percentage.

Sole voting power 86.4K
Shared voting power 0
Sole dispositive power 86.4K
Shared dispositive power 0
Price context

Price dates alongside the ownership filing

Price data provides market context around the disclosure. It does not identify the filer’s actual transaction price.

Close near filing date$3.67as of Nov 13, 2025
Latest tracked price$2.88as of Aug 6, 2026
Source

Original filing and accession

Use the SEC filing as the primary source when you need the complete disclosure, footnotes, exhibits, or reporting-person details.

Reporting filer
Renaissance Technologies
CIK
CIK0001037389
Accession
0001037389-25-000069
Form
Schedule 13G
Open SEC filing View GRDX ownership history
Read the filing in context

Understand what a Schedule 13 filing does—and does not—tell you.

How to read a Schedule 13G → Does a 13G mean the shares were just bought? → Filing date vs. ownership date →