GridAI Technologies Corp. (GRDX) Ownership
GRDX ownership summary
as of October 18, 2026- Institutions
- 9.0% of shares outstanding
- Insiders
- 12.08% of shares outstanding
- Shares outstanding
- 7.1M
- Float
- 0 shares available to trade
- Short interest
- 1.52% 105K shares short
- Days to cover
- 1.24 short interest up 91.8% vs prior month
- Institutions 8.98%
- Insiders 12.08%
- Other investors 78.94%
GRDX top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Renaissance Technologies Corp | 4.17% | 176K | $743,986 | −7,500 (−4.1%) | June 30, 2026 |
| 2 | Citadel Advisors Llc | 2.02% | 85K | $360,072 | +85,325 (0.0%) | June 30, 2026 |
| 3 | Federation des caisses Desjardins du Quebec | 1.81% | 76K | $322,197 | +28,550 (+59.7%) | June 30, 2026 |
| 4 | Vanguard Capital Management, LLC | 1.75% | 74K | $312,533 | +55,767 (+304.9%) | June 30, 2026 |
| 5 | Geode Capital Management, LLC | 1.42% | 60K | $252,774 | +26,629 (+80.0%) | June 30, 2026 |
| 6 | Jane Street Group LLC | 1.17% | 49K | $207,776 | +36,579 (+289.0%) | June 30, 2026 |
| 7 | Vanguard Fiduciary Trust Co | 0.80% | 34K | $142,653 | +17,459 (+106.8%) | June 30, 2026 |
| 8 | State Street Corp | 0.56% | 23K | $98,942 | — | June 30, 2026 |
| 9 | HRT FINANCIAL LLC | 0.50% | 21K | $88,464 | +20,963 (0.0%) | June 30, 2026 |
| 10 | Independent Advisor Alliance | 0.36% | 15K | $63,300 | +15,000 (0.0%) | June 30, 2026 |
| 11 | Northern Trust Corp | 0.33% | 14K | $58,823 | +13,939 (0.0%) | June 30, 2026 |
| 12 | HARBOUR INVESTMENTS, INC. | 0.14% | 5,862 | $24,738 | −2,132 (−26.7%) | June 30, 2026 |
| 13 | JONES FINANCIAL COMPANIES LLLP | 0.05% | 2,000 | $8,440 | +2,000 (0.0%) | June 30, 2026 |
| 14 | Tower Research Capital LLC | 0.03% | 1,445 | $6,098 | +184 (+14.6%) | June 30, 2026 |
| 15 | Barclays PLC | 0.01% | 380 | $1,604 | +380 (0.0%) | June 30, 2026 |
| 16 | SBI Securities Co Ltd | <0.01% | 31 | $131 | −473 (−93.8%) | June 30, 2026 |
| 17 | Caitong International Asset Management Co., Limited. | <0.01% | 21 | $89 | +21 (0.0%) | June 30, 2026 |
| 18 | Danske Bank A/S. | 0.00% | 1 | $4 | — | June 30, 2026 |
| 19 | Advisor Group Holdings, Inc. | 0.00% | 1 | $4 | — | June 30, 2026 |
| 20 | DRW Securities, LLC | 0.00% | — | — | −48,623 (−100.0%) | March 31, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 13 holders added 303K shares and 4 cut 59K.
GRDX top mutual fund and ETF holders
5 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Fidelity Extended Market Index | 0.72% | 30K | $127,503 | −162 (−0.5%) | August 31, 2026 |
| 2 | Fidelity Series Total Market Index | 0.23% | 9,781 | $41,276 | — | August 31, 2026 |
| 3 | Fidelity Total Market Index | 0.20% | 8,541 | $36,043 | +1,434 (+20.2%) | August 31, 2026 |
| 4 | Fidelity Nasdaq Composite Index | 0.10% | 4,094 | $17,277 | — | August 31, 2026 |
| 5 | Dimensional US Sustainability Core 1 ETF | 0.06% | 2,539 | $10,715 | — | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
GRDX shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns GRDX
Institutional investors own 9.0% of GridAI Technologies's shares and insiders 12.08%. The largest holder is Renaissance Technologies Corp with 4.17% of the shares (176K), as of June 30, 2026. Among the top 20 institutions, 13 added shares and 4 reduced their stake in the latest filings. Short interest is 1.52% of the float, or 1.24 days of average trading volume. The share count rose 2,111,950.0% since 2014.
Related: GRDX key metrics. See the GRDX stock overview for the latest quote and news.
GRDX ownership FAQ
Who owns the most GridAI Technologies stock?
The largest shareholders of GridAI Technologies are Renaissance Technologies Corp (4.17%), Citadel Advisors Llc (2.02%), Federation des caisses Desjardins du Quebec (1.81%), Vanguard Capital Management, LLC (1.75%), Geode Capital Management, LLC (1.42%).
What percentage of GridAI Technologies is owned by institutions?
Institutions hold 9.0% of GridAI Technologies's shares outstanding; insiders hold 12.08%.
Which funds own GridAI Technologies?
The largest fund holders of GridAI Technologies are Fidelity Extended Market Index (0.72%), Fidelity Series Total Market Index (0.23%), Fidelity Total Market Index (0.20%), Fidelity Nasdaq Composite Index (0.10%), Dimensional US Sustainability Core 1 ETF (0.06%).
What is GridAI Technologies's short interest?
105K shares of GridAI Technologies were sold short, 1.52% of the float; at the average daily volume it would take 1.24 days to cover.
How many shares of GridAI Technologies are outstanding?
GridAI Technologies has 7.1M shares outstanding, of which an unreported number are in the public float.