Company · Ownership research

GRID DYNAMICS HOLDINGS, INC. GDYN

CIK 0001743725 · CUSIP 39813G109

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 39813G109 (GDYN), not CUSIP 39813G909 (GDYN), CUSIP 39813G959 (GDYN), and does not merge CUSIPs.

This page lists the top 20 of 197 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock, Inc. CIK 2012383 · View history	$67.16M 11,782,501 shares	0.00%	-42.03K(-0.40%)Reduced	SEC filing ↗ May 13, 2026	▾
02	Alyeska Investment Group, L.P. CIK 1453072 · View history	$29.95M 5,254,813 shares	0.08%	+1.47M(+38.90%)Added	SEC filing ↗ May 15, 2026	▾
03	ALLIANCEBERNSTEIN L.P. CIK 1109448 · View history	$20.53M 2,273,678 shares	0.01%	-103.12K(-4.30%)Reduced	SEC filing ↗ May 15, 2026	▾
04	BAMCO INC /NY/ CIK 1017918 · View history	$17.10M 3,000,322 shares	0.05%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2026	▾
05	STATE STREET CORP CIK 93751 · View history	$16.62M 2,916,353 shares	0.00%	+154.90K(+5.60%)Added	SEC filing ↗ May 15, 2026	▾
06	VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · Amended · View history	$16.09M 2,822,129 shares	0.00%	—	SEC filing ↗ May 15, 2026	▾
07	VANGUARD PORTFOLIO MANAGEMENT LLC CIK 2100121 · Amended · View history	$15.85M 2,779,953 shares	0.00%	—	SEC filing ↗ May 8, 2026	▾
08	T. Rowe Price Investment Management, Inc. CIK 1897612 · View history	$14.63M 2,566,911 shares	0.01%	+1.54M(+149.10%)Added	SEC filing ↗ May 15, 2026	▾
09	MORGAN STANLEY CIK 895421 · View history	$10.66M 1,869,757 shares	0.00%	+152.77K(+8.90%)Added	SEC filing ↗ May 15, 2026	▾
10	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$9.18M 1,609,725 shares	0.00%	-14.81K(-0.90%)Reduced	SEC filing ↗ May 15, 2026	▾
11	FEDERATED HERMES, INC. CIK 1056288 · View history	$8.22M 1,442,429 shares	0.01%	+1.44MNew	SEC filing ↗ May 11, 2026	▾
12	RIVERBRIDGE PARTNERS LLC CIK 1112325 · View history	$8.14M 1,427,409 shares	0.20%	-318.56K(-18.20%)Reduced	SEC filing ↗ Apr 17, 2026	▾
13	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$7.98M 1,400,209 shares	0.00%	-370.42K(-20.90%)Reduced	SEC filing ↗ May 7, 2026	▾
14	ROYAL BANK OF CANADA CIK 1000275 · View history	$7.48M 1,312,624 shares	0.00%	-259.12K(-16.50%)Reduced	SEC filing ↗ May 15, 2026	▾
15	Bastion Asset Management Inc. CIK 1977794 · View history	$6.90M 1,134,450 shares	2.10%	+1.13MNew	SEC filing ↗ May 5, 2026	▾
16	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$6.75M 1,184,210 shares	0.01%	+858.27K(+263.30%)Added	SEC filing ↗ May 15, 2026	▾
17	JACOBS LEVY EQUITY MANAGEMENT, INC CIK 884414 · View history	$6.63M 1,162,845 shares	0.03%	+566.42K(+95.00%)Added	SEC filing ↗ May 15, 2026	▾
18	FRONTIER CAPITAL MANAGEMENT CO LLC CIK 351173 · View history	$6.44M 1,129,076 shares	0.07%	-42.73K(-3.60%)Reduced	SEC filing ↗ May 15, 2026	▾
19	Focus Partners Wealth CIK 1542153 · View history	$5.91M 1,036,416 shares	0.01%	-1.87K(-0.20%)Reduced	SEC filing ↗ May 15, 2026	▾
20	AMERIPRISE FINANCIAL INC CIK 820027 · Amended · View history	$5.15M 903,451 shares	0.00%	+94.93K(+11.70%)Added	SEC filing ↗ Jul 17, 2026	▾

Showing 20 / 197 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

197

Cancelled or null records excluded

Disclosed shares

68,357,762

Not deduplicated across managers

Disclosed value

$397.63M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

GRID DYNAMICS HOLDINGS, INC. · Q1 2026

Explore all 197 reporting institutions.

This page includes 20 of 197 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

Download CSV
Earlier quarters
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 197 reporting institutions; totals use the complete disclosed data.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.

MCP  https://api.akkrudata.ai/mcp

akkru_institutional_holdings
{"action":"holders","cusip":"39813G109","quarter":"2026Q1","type":"positions","page_size":100}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP / CLI documentation: /documents
llms.txt: /llms.txt

Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.