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 June 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 |
|---|---|---|
| BlackRock, Inc. | 6.7M | 10.7% |
| Alyeska Investment Group, L.P. | 6.1M | 9.7% |
| T. Rowe Price Investment Management, Inc. | 3.7M | 6.0% |
| BAMCO INC /NY/ | 3.0M | 4.8% |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.8M | 4.5% |
| MORGAN STANLEY | 2.4M | 3.9% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2.2M | 3.5% |
| STATE STREET CORP | 2.0M | 3.2% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.8M | 2.8% |
| FEDERATED HERMES, INC. | 1.7M | 2.8% |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 1.3M | 2.1% |
| JANE STREET GROUP, LLC | 1.3M | 2.0% |
| GOLDMAN SACHS GROUP INC | 1.2M | 1.9% |
| ROYAL BANK OF CANADA | 1.1M | 1.8% |
| DIMENSIONAL FUND ADVISORS LP | 1.1M | 1.8% |
| MILLENNIUM MANAGEMENT LLC | 1.1M | 1.7% |
| AMERIPRISE FINANCIAL INC | 1.0M | 1.7% |
| Focus Partners Wealth | 1.0M | 1.7% |
| NORTHERN TRUST CORP | 991.7K | 1.6% |
| RIVERBRIDGE PARTNERS LLC | 986.5K | 1.6% |
| CenterBook Partners LP | 825.3K | 1.3% |
| CSM Advisors, LLC | 755.8K | 1.2% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 746.4K | 1.2% |
| S SQUARED TECHNOLOGY, LLC | 636.7K | 1.0% |
| Trexquant Investment LP | 614.1K | 1.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| BlackRock, Inc. | Reduced | 11.8M | 6.7M | -5.1M |
| ALLIANCEBERNSTEIN L.P. | Reduced | 2.3M | 313.0K | -2.0M |
| JANE STREET GROUP, LLC | New | 0 | 1.3M | +1.3M |
| T. Rowe Price Investment Management, Inc. | Increased | 2.6M | 3.7M | +1.1M |
| Bastion Asset Management Inc. | Sold Out | 1.1M | 0 | -1.1M |
| FRONTIER CAPITAL MANAGEMENT CO LLC | Sold Out | 1.1M | 0 | -1.1M |
| MILLENNIUM MANAGEMENT LLC | New | 0 | 1.1M | +1.1M |
| STATE STREET CORP | Reduced | 2.9M | 2.0M | -897.4K |
| Alyeska Investment Group, L.P. | Increased | 5.3M | 6.1M | +811.4K |
| CSM Advisors, LLC | New | 0 | 755.8K | +755.8K |
| D. E. Shaw & Co., Inc. | Reduced | 1.2M | 553.8K | -630.4K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | 2.8M | 2.2M | -626.0K |
| Fourth Sail Capital LP | Sold Out | 610.3K | 0 | -610.3K |
| MORGAN STANLEY | Increased | 1.9M | 2.4M | +552.0K |
| KENNEDY CAPITAL MANAGEMENT LLC | New | 0 | 501.7K | +501.7K |
| BLAIR WILLIAM & CO/IL | Reduced | 499.4K | 13.6K | -485.8K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Increased | 118.4K | 595.1K | +476.6K |
| Squarepoint Ops LLC | New | 0 | 475.7K | +475.7K |
| GOLDMAN SACHS GROUP INC | Increased | 768.3K | 1.2M | +441.8K |
| RIVERBRIDGE PARTNERS LLC | Reduced | 1.4M | 986.5K | -441.0K |
| Point72 Asset Management, L.P. | New | 0 | 438.0K | +438.0K |
| Summit Creek Advisors LLC | Reduced | 819.7K | 431.7K | -388.0K |
| PRINCIPAL FINANCIAL GROUP INC | Sold Out | 323.8K | 0 | -323.8K |
| FEDERATED HERMES, INC. | Increased | 1.4M | 1.7M | +302.9K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 1.4M | 1.1M | -292.7K |
| Taylor Frigon Capital Management LLC | Sold Out | 287.7K | 0 | -287.7K |
| WELLINGTON MANAGEMENT GROUP LLP | Sold Out | 260.0K | 0 | -260.0K |
| ACADIAN ASSET MANAGEMENT LLC | Reduced | 355.6K | 96.0K | -259.6K |
| UBS Group AG | Reduced | 497.2K | 249.1K | -248.1K |
| Public Sector Pension Investment Board | Sold Out | 238.2K | 0 | -238.2K |
| NORTHERN TRUST CORP | Increased | 764.0K | 991.7K | +227.7K |
| Pacific Ridge Capital Partners, LLC | New | 0 | 227.7K | +227.7K |
| ROYCE & ASSOCIATES LP | Reduced | 417.0K | 189.6K | -227.5K |
| ALGERT GLOBAL LLC | Sold Out | 225.4K | 0 | -225.4K |
| TWO SIGMA INVESTMENTS, LP | New | 0 | 207.6K | +207.6K |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | 250.2K | 54.6K | -195.7K |
| Invesco Ltd. | Reduced | 352.2K | 156.8K | -195.3K |
| Catalyst Funds Management Pty Ltd | New | 0 | 192.0K | +192.0K |
| Trexquant Investment LP | Increased | 423.8K | 614.1K | +190.3K |
| ROYAL BANK OF CANADA | Reduced | 1.3M | 1.1M | -190.2K |
| FMR LLC | Increased | 11.3K | 199.3K | +188.0K |
| Y-Intercept (Hong Kong) Ltd | New | 0 | 181.2K | +181.2K |
| Cambridge Investment Research Advisors, Inc. | New | 0 | 167.0K | +167.0K |
| IMC-Chicago, LLC | New | 0 | 158.1K | +158.1K |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Increased | 1.2M | 1.3M | +157.3K |
| Linden Thomas Advisory Services, LLC | Increased | 105.8K | 258.8K | +153.0K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | New | 0 | 148.9K | +148.9K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 1.6M | 1.8M | +147.3K |
| Quantinno Capital Management LP | Reduced | 206.3K | 61.4K | -144.8K |
| Bank of New York Mellon Corp | Reduced | 389.2K | 245.9K | -143.3K |
| TUDOR INVESTMENT CORP ET AL | Sold Out | 141.1K | 0 | -141.1K |
| Nuveen, LLC | Increased | 122.0K | 261.0K | +139.0K |
| SEI INVESTMENTS CO | Reduced | 281.4K | 142.6K | -138.8K |
| AMERIPRISE FINANCIAL INC | Increased | 903.5K | 1.0M | +132.2K |
| BANK OF AMERICA CORP /DE/ | Reduced | 364.3K | 237.1K | -127.2K |
| Walleye Capital LLC | Reduced | 176.6K | 56.1K | -120.5K |
| Magnetar Financial LLC | Sold Out | 115.4K | 0 | -115.4K |
| VICTORY CAPITAL MANAGEMENT INC | Increased | 306.9K | 412.6K | +105.8K |
| RHUMBLINE ADVISERS | Reduced | 189.1K | 84.1K | -104.9K |
| JPMORGAN CHASE & CO | Reduced | 594.1K | 489.3K | -104.8K |
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.