GRDX — GridAI Technologies Corp.
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2024-05-17.
Performance
Technicals
Others in Healthcare
Measured signals that fired on GRDX
| date | signal | measured base rate |
|---|---|---|
| 2026-08-14 | Short volume far above its own normal short | -0.76% over 21 days · t = -2.79 · n = 5,897 statistically distinguishable from its control group |
| 2026-03-26 | Short volume far above its own normal short | -0.76% over 21 days · t = -2.79 · n = 5,897 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-06-30 | Sawyer Jason David Chief Executive Officer | Grant or award | 250.0K | 0.00 | 0 |
| 2026-03-31 | Sawyer Jason David Chief Executive Officer | Grant or award | 250.0K | 0.00 | 0 |
| 2026-01-01 | Syage Jack Director | Grant or award | 40.0K | 0.00 | 0 |
| 2026-01-01 | BORKOWSKI EDWARD Director | Grant or award | 40.0K | 0.00 | 0 |
| 2026-01-01 | Pursglove Geordan Garrett Director | Grant or award | 40.0K | 0.00 | 0 |
| 2026-01-01 | Uppal Manpreet Director | Grant or award | 40.0K | 0.00 | 0 |
| 2025-12-22 | Sawyer Jason David Chief Executive Officer | Grant or award | 40.0K | 0.00 | 0 |
| 2025-12-22 | Skowron Anna Interim CFO | Grant or award | 65.0K | 0.00 | 0 |
| 2025-01-06 | Romano Sarah Chief Financial Officer | Open-market sale | 727 | 0.64 | 465 |
| 2024-10-09 | Romano Sarah Chief Financial Officer | Open-market sale | 476 | 0.45 | 214 |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC | 371.3K | 183.8K |
| Federation des caisses Desjardins du Quebec | 96.6K | 47.8K |
| GEODE CAPITAL MANAGEMENT, LLC | 67.2K | 33.3K |
| STATE STREET CORP | 47.4K | 23.4K |
| VANGUARD CAPITAL MANAGEMENT LLC | 37.0K | 18.3K |
| VANGUARD FIDUCIARY TRUST CO | 33.0K | 16.3K |
| JANE STREET GROUP, LLC | 25.6K | 12.7K |
| HARBOUR INVESTMENTS, INC. | 16.1K | 8.0K |
| UBS Group AG | 6.4K | 3.2K |
| Tower Research Capital LLC (TRC) | 2.5K | 1.3K |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Latest SEC filings
| form | filed | period | |
|---|---|---|---|
| NT 10-Q | 2026-08-14 | 2026-06-30 | on EDGAR ↗ |
| S-1/A | 2026-07-31 | — | on EDGAR ↗ |
| 8-K | 2026-07-23 | 2026-07-17 | on EDGAR ↗ |
| D | 2026-07-15 | — | on EDGAR ↗ |
| S-1/A | 2026-07-09 | — | on EDGAR ↗ |
| SCHEDULE 13D | 2026-07-08 | — | on EDGAR ↗ |
| 8-K/A | 2026-07-07 | 2026-07-01 | on EDGAR ↗ |
| 8-K | 2026-07-06 | 2026-07-01 | on EDGAR ↗ |
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
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