GDYN: Grid Dynamics Holdings, Inc. insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 2 sales totaling $49K in the last 180 days.
Insider sales
| Trade date | Insider | Role | Value | 10b5-1 plan |
|---|---|---|---|---|
| 2026-10-08 | Gryzlov Yury | Officer | $39K | yes |
| 2026-10-02 | Gryzlov Yury | Officer | $11K | yes |
Activist and 5% holders
| Filed | What | Holder | Stake | Change | Filing |
|---|---|---|---|---|---|
| 2026-08-14 | 13G amendment | Alyeska Investment Group, L.P. | 7.25% | SEC |
Institutional ownership (Q2 2026)
197 institutions reported holding $324.64M of Grid Dynamics Holdings, Inc. on Form 13F (197 the quarter before). 48 opened a new position and 46 sold out. Shares held by institutions: -9%.
| Largest holders | Shares | Value |
|---|---|---|
| BlackRock, Inc. | 6,676,591 | $37.92M |
| Alyeska Investment Group, L.P. | 6,066,193 | $34.46M |
| BAMCO INC /NY/ | 3,000,000 | $17.04M |
| VANGUARD CAPITAL MANAGEMENT LLC | 2,803,256 | $15.92M |
| MORGAN STANLEY | 2,421,745 | $13.76M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2,153,933 | $12.23M |
| STATE STREET CORP | 2,018,993 | $11.47M |
| GEODE CAPITAL MANAGEMENT, LLC | 1,756,994 | $9.98M |
| FEDERATED HERMES, INC. | 1,745,369 | $9.91M |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 1,320,149 | $7.50M |
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