WESTFORD, MA
NETSCOUT SYSTEMS INCNTCT— Latest position per institution from SEC 13F filings
15
Institutional holders
68.06M
Total shares held
1.85B
Estimated value
3.40M
Avg. position size
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
11.77M
Value
215.20M
Filed
Jun 30, 2024
BLACKROCK, INC.
CIK 2012383
Shares
11.39M
Value
362.06M
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
9.06M
Value
245.09M
Filed
Dec 31, 2025
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
5.53M
Value
175.76M
Filed
Mar 31, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
4.26M
Value
135.39M
Filed
Mar 31, 2026
LEGAL & GENERAL GROUP PLC
CIK 764068
Shares
3.64M
Value
115.56M
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
3.28M
Value
104.19M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
3.05M
Value
96.81M
Filed
Mar 31, 2026
LSV ASSET MANAGEMENT
CIK 1050470
Shares
2.75M
Value
87.28K
Filed
Mar 31, 2026
ROBECO INSTITUTIONAL ASSET MANAGEMENT B.V.
CIK 1418773
Shares
2.01M
Value
63.95M
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
1.83M
Value
58.33M
Filed
Mar 31, 2026
FIRST TRUST ADVISORS LP
CIK 1125816
Shares
1.74M
Value
55.46M
Filed
Mar 31, 2026
AQR CAPITAL MANAGEMENT LLC
CIK 1167557
Shares
1.20M
Value
37.76M
Filed
Mar 31, 2026
ALLIANZ ASSET MANAGEMENT GMBH
CIK 1535323
Shares
1.19M
Value
37.67M
Filed
Mar 31, 2026
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
CIK 1644956
Shares
1.12M
Value
20.52M
Filed
Jun 30, 2024
WELLINGTON MANAGEMENT GROUP LLP
CIK 902219
Shares
1.08M
Value
34.24M
Filed
Mar 31, 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 884546
Shares
1.06M
Value
33.65M
Filed
Mar 31, 2026
NORTHERN TRUST CORP
CIK 73124
Shares
737.77K
Value
23.45M
Filed
Mar 31, 2026
MORGAN STANLEY
CIK 895421
Shares
714.45K
Value
22.71M
Filed
Mar 31, 2026
NUVEEN ASSET MANAGEMENT, LLC
CIK 1521019
Shares
666.68K
Value
14.44M
Filed
Dec 31, 2024
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK FINANCE, INC. | 1364742 | 11.77M | 215.20M | Jun 30, 2024 |
| 2 | BLACKROCK, INC. | 2012383 | 11.39M | 362.06M | Mar 31, 2026 |
| 3 | VANGUARD GROUP INC | 102909 | 9.06M | 245.09M | Dec 31, 2025 |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 5.53M | 175.76M | Mar 31, 2026 |
| 5 | DIMENSIONAL FUND ADVISORS LP | 354204 | 4.26M | 135.39M | Mar 31, 2026 |
| 6 | LEGAL & GENERAL GROUP PLC | 764068 | 3.64M | 115.56M | Mar 31, 2026 |
| 7 | STATE STREET CORP | 93751 | 3.28M | 104.19M | Mar 31, 2026 |
| 8 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 3.05M | 96.81M | Mar 31, 2026 |
| 9 | LSV ASSET MANAGEMENT | 1050470 | 2.75M | 87.28K | Mar 31, 2026 |
| 10 | ROBECO INSTITUTIONAL ASSET MANAGEMENT B.V. | 1418773 | 2.01M | 63.95M | Mar 31, 2026 |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 1.83M | 58.33M | Mar 31, 2026 |
| 12 | FIRST TRUST ADVISORS LP | 1125816 | 1.74M | 55.46M | Mar 31, 2026 |
| 13 | AQR CAPITAL MANAGEMENT LLC | 1167557 | 1.20M | 37.76M | Mar 31, 2026 |
| 14 | ALLIANZ ASSET MANAGEMENT GMBH | 1535323 | 1.19M | 37.67M | Mar 31, 2026 |
| 15 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 1644956 | 1.12M | 20.52M | Jun 30, 2024 |
| 16 | WELLINGTON MANAGEMENT GROUP LLP | 902219 | 1.08M | 34.24M | Mar 31, 2026 |
| 17 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 884546 | 1.06M | 33.65M | Mar 31, 2026 |
| 18 | NORTHERN TRUST CORP | 73124 | 737.77K | 23.45M | Mar 31, 2026 |
| 19 | MORGAN STANLEY | 895421 | 714.45K | 22.71M | Mar 31, 2026 |
| 20 | NUVEEN ASSET MANAGEMENT, LLC | 1521019 | 666.68K | 14.44M | Dec 31, 2024 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.