GRID DYNAMICS HOLDINGS, INC. - Class A Common Stock, $0.0001 par value (GDYN)

Q: What does CUSIP 39813G109 represent in this 13F holders report?

CUSIP 39813G109 is the security identifier for GDYN - GRID DYNAMICS HOLDINGS, INC. - Class A Common Stock, $0.0001 par value used to aggregate holder disclosures.

Q: How many institutions held GDYN - GRID DYNAMICS HOLDINGS, INC. - Class A Common Stock, $0.0001 par value in Q3 2021?

147 institutional investors reported GDYN - GRID DYNAMICS HOLDINGS, INC. - Class A Common Stock, $0.0001 par value for Q3 2021. Use the holders table for investor-level position and value details.

CUSIP: 39813G109

Q3 2021 13F Holders as of 30 Sep 2021

Security type / class: Equity / Class A Common Stock, $0.0001 par value
Total 13F shares: 43,176,792
Total 13F value: $1,261,780,057
Share change: +15,592,186
Put/Call ratio: 8.9%
SEC-reported price per share: $29.22
Number of holders: 147
Value change: +$466,595,537
Number of buys: 119
Number of sells: 35
Shares outstanding: 83,869,313

Security key

39813G109

Report period

Q3 2021

Institutions

147

Top holders

GDYN full security history Ownership snapshot Full 13F holder table Newer quarter: Q4 2021 Previous quarter: Q2 2021 GRID DYNAMICS HOLDINGS, INC. SEC filings GRID DYNAMICS HOLDINGS, INC. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 39813G109

Newer quarter: Q4 2021 Previous quarter: Q2 2021

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Ownership snapshot

Top reported holders of GDYN - GRID DYNAMICS HOLDINGS, INC. - Class A Common Stock, $0.0001 par value (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

WILLIAM BLAIR INVESTMENT ...

Disclosed value leader

WILLIAM BLAIR INVESTMENT ...

Comparable rows

15/15

Latest evidence

30 Jun 2021

13F Lead comparable stake: 3.8% Showing 1-6 of 15 holder rows.

Quick read

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC leads the comparable SEC ownership view at 3.8%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's linked filing trail.

Comparable ownership Top 5

WILLIAM BLAIR INVESTMENT MANAGEME... 3.8%

BlackRock Finance, Inc. 3.7%

FEDERATED HERMES, INC. 3.5%

BAMCO INC /NY/ 3%

VANGUARD GROUP INC 1.6%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	13F Company 13F	3.8%	$47,800,000 3,180,286 shares	—	30 Jun 2021
BlackRock Finance, Inc.	13F Company 13F	3.7%	$47,221,000 3,141,801 shares	—	30 Jun 2021
FEDERATED HERMES, INC.	13F Company 13F	3.5%	$44,345,000 2,950,425 shares	—	30 Jun 2021
BAMCO INC /NY/	13F Company 13F	3%	$38,056,000 2,532,000 shares	—	30 Jun 2021
VANGUARD GROUP INC	13F Company 13F	1.6%	$20,697,000 1,377,089 shares	—	30 Jun 2021
NEXT CENTURY GROWTH INVESTORS LLC	13F Company 13F	1.6%	$19,615,000 1,305,067 shares	—	30 Jun 2021

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q3 2021

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

147

43,176,792

Rows available

147

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q3 2021 vs Q2 2021 Across Filers

Q2 2021 holders

101

Q3 2021 holders

147

Holder diff

Investor	Q2 2021 Shares	Q3 2021 Shares	Share Diff	Share Chg %	Q2 2021 value	Q3 2021 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend