13F

Stock

GridAI Technologies Corp.

GRDX · held by 14 managers

Reported value

$704.1K

Holders

14

+4 new · −3 exited

Holders’ est. mark

−$200.2K

Price effect on 8 books still in the name

Largest holder

$371.3K

Renaissance Technologies

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
Renaissance Technologies183.8K$371.3K−$81.8KAdded$226.8K
Federation des caisses Desjardins du Quebec47.8K$96.6KNew
GEODE CAPITAL MANAGEMENT, LLC33.3K$67.2K−$53.7KCut−$27.7K
State Street23.4K$47.4K−$61.9KCut−$61.9K
VANGUARD CAPITAL MANAGEMENT LLC18.3K$37KHeld
VANGUARD FIDUCIARY TRUST CO16.3K$33KHeld
JANE STREET GROUP, LLC12.7K$25.6KNew
HARBOUR INVESTMENTS, INC.7.99K$16.1KNew
UBS Group AG3.19K$6.44K−$1.42KAdded$3.94K
Tower Research Capital LLC (TRC)1.26K$2.55KNew
SBI Securities Co., Ltd.504$1.02K−$1.33KCut−$1.33K
OSAIC HOLDINGS, INC.1$2−$2Cut−$2
CITIGROUP INC1$2−$3Cut−$8.51K
DANSKE BANK A/S1$2−$3Cut−$3

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.