GDYN Grid Dynamics Holdings, Inc.
Grid Dynamics Holdings, Inc. (GDYN) Institutional Ownership
What the institutions did with GDYN last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended September 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| DIMENSIONAL FUND ADVISORS LP | 1.8M | 14.4% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.6M | 13.2% |
| Nuveen, LLC | 1.3M | 10.8% |
| RIVERBRIDGE PARTNERS LLC | 919.9K | 7.5% |
| ACADIAN ASSET MANAGEMENT LLC | 903.9K | 7.4% |
| Summit Creek Advisors LLC | 488.3K | 4.0% |
| Russell Investments Group, Ltd. | 481.1K | 3.9% |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC | 445.4K | 3.6% |
| FMR LLC | 401.5K | 3.3% |
| VICTORY CAPITAL MANAGEMENT INC | 394.3K | 3.2% |
| NICHOLAS COMPANY, INC. | 382.6K | 3.1% |
| Creative Planning | 303.2K | 2.5% |
| Linden Thomas Advisory Services, LLC | 256.3K | 2.1% |
| Bank of New York Mellon Corp | 244.4K | 2.0% |
| Squarepoint Ops LLC | 222.9K | 1.8% |
| SEI INVESTMENTS CO | 198.5K | 1.6% |
| ROYCE & ASSOCIATES LP | 189.6K | 1.6% |
| Mirador Capital Partners LP | 189.1K | 1.5% |
| Y-Intercept (Hong Kong) Ltd | 179.9K | 1.5% |
| PICTON MAHONEY ASSET MANAGEMENT | 172.9K | 1.4% |
| SummerHaven Investment Management, LLC | 155.8K | 1.3% |
| UBS Group AG | 84.9K | 0.7% |
| CITIGROUP INC | 84.7K | 0.7% |
| RHUMBLINE ADVISERS | 83.3K | 0.7% |
| KORNITZER CAPITAL MANAGEMENT INC /KS | 83.3K | 0.7% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Nuveen, LLC | Increased | 261.0K | 1.3M | +1.1M |
| CenterBook Partners LP | Sold Out | 825.3K | 0 | -825.3K |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 96.0K | 903.9K | +808.0K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 1.1M | 1.8M | +655.7K |
| Squarepoint Ops LLC | Reduced | 475.7K | 222.9K | -252.8K |
| CITIGROUP INC | Reduced | 312.1K | 84.7K | -227.4K |
| FMR LLC | Increased | 199.3K | 401.5K | +202.1K |
| PICTON MAHONEY ASSET MANAGEMENT | New | 0 | 172.9K | +172.9K |
| Cambridge Investment Research Advisors, Inc. | Sold Out | 167.0K | 0 | -167.0K |
| UBS Group AG | Reduced | 249.1K | 84.9K | -164.1K |
| IMC-Chicago, LLC | Sold Out | 158.1K | 0 | -158.1K |
| SummerHaven Investment Management, LLC | New | 0 | 155.8K | +155.8K |
| Creative Planning | Increased | 150.4K | 303.2K | +152.8K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 1.8M | 1.6M | -143.4K |
| LPL Financial LLC | Reduced | 173.2K | 41.8K | -131.4K |
| RIVERBRIDGE PARTNERS LLC | Reduced | 986.5K | 919.9K | -66.5K |
| Themes Management Co LLC | Sold Out | 60.7K | 0 | -60.7K |
| VOYA INVESTMENT MANAGEMENT LLC | Reduced | 70.3K | 13.5K | -56.8K |
| Summit Creek Advisors LLC | Increased | 431.7K | 488.3K | +56.7K |
| Russell Investments Group, Ltd. | Increased | 424.6K | 481.1K | +56.5K |
| SEI INVESTMENTS CO | Increased | 142.6K | 198.5K | +55.9K |
| Fulcrum Asset Management LLP | Increased | 84 | 52.7K | +52.6K |
| Mirae Asset Global Investments Co., Ltd. | New | 0 | 33.2K | +33.2K |
| SIMPLEX TRADING, LLC | Reduced | 39.6K | 7.8K | -31.8K |
| Jefferies Financial Group Inc. | Sold Out | 31.0K | 0 | -31.0K |
| State of Wyoming | Reduced | 68.3K | 39.7K | -28.6K |
| Calamos Advisors LLC | New | 0 | 23.5K | +23.5K |
| VICTORY CAPITAL MANAGEMENT INC | Reduced | 412.6K | 394.3K | -18.3K |
| FNY Investment Advisers, LLC | Sold Out | 17.5K | 0 | -17.5K |
| INTECH INVESTMENT MANAGEMENT LLC | Sold Out | 16.6K | 0 | -16.6K |
| StoneX Group Inc. | New | 0 | 15.8K | +15.8K |
| BARCLAYS PLC | Increased | 28.4K | 42.9K | +14.5K |
| BLAIR WILLIAM & CO/IL | Sold Out | 13.6K | 0 | -13.6K |
| Vise Technologies, Inc. | New | 0 | 13.1K | +13.1K |
| Moran Wealth Management, LLC | New | 0 | 11.6K | +11.6K |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC | Reduced | 451.9K | 445.4K | -6.5K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | Reduced | 53.8K | 48.4K | -5.4K |
| HANTZ FINANCIAL SERVICES, INC. | Reduced | 10.4K | 5.6K | -4.8K |
| Caitong International Asset Management Co., Ltd | Reduced | 4.6K | 605 | -4.0K |
| KORNITZER CAPITAL MANAGEMENT INC /KS | Reduced | 86.5K | 83.3K | -3.2K |
| PNC Financial Services Group, Inc. | Reduced | 3.5K | 638 | -2.9K |
| OPPENHEIMER ASSET MANAGEMENT INC. | Reduced | 57.7K | 54.9K | -2.8K |
| FIFTH THIRD BANCORP | Increased | 20.0K | 22.6K | +2.6K |
| Pinnacle Wealth Planning Services, Inc. | Reduced | 2.7K | 44 | -2.6K |
| DEUTSCHE BANK AG\ | Reduced | 67.5K | 65.0K | -2.5K |
| Linden Thomas Advisory Services, LLC | Reduced | 258.8K | 256.3K | -2.5K |
| HUNTINGTON NATIONAL BANK | Reduced | 2.3K | 549 | -1.7K |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | Increased | 12.6K | 14.3K | +1.7K |
| Parkside Financial Bank & Trust | Reduced | 6.6K | 4.9K | -1.6K |
| Bank of New York Mellon Corp | Reduced | 245.9K | 244.4K | -1.6K |
| SJS Investment Consulting Inc. | Increased | 76 | 1.4K | +1.4K |
| Y-Intercept (Hong Kong) Ltd | Reduced | 181.2K | 179.9K | -1.3K |
| Parallel Advisors, LLC | Reduced | 3.1K | 2.0K | -1.1K |
| Abel Hall, LLC | Reduced | 18.5K | 17.5K | -1.1K |
| Park Place Capital Corp | Sold Out | 1.0K | 0 | -1.0K |
| GK Wealth Management LLC | New | 0 | 1.0K | +1.0K |
| NISA INVESTMENT ADVISORS, LLC | Reduced | 4.5K | 3.5K | -983 |
| SIGNATUREFD, LLC | Increased | 779 | 1.7K | +926 |
| RHUMBLINE ADVISERS | Reduced | 84.1K | 83.3K | -791 |
| Versant Capital Management, Inc | Reduced | 2.8K | 2.1K | -740 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.