13F Insight
DOSSIER · 13F Holders · Q1 2026Technology · Services-Computer Integrated Systems Design
NTCT

NETSCOUT SYS INC

305 institutions still hold NETSCOUT SYS INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 64115T104·Services-Computer Integrated Systems Design·305 13F holders·last filed Mar 31, 2026
Market cap
—
13F value held
$1.5B
visible holders
Holders
305
filers reporting
Concentration
23.41%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

305 institutions reported NTCT in Q1 2026. BlackRock, Inc. leads at 23.4% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$362M11.4M0.01%Q1 202602
Vanguard Portfolio Management
CIK 0002100121· Index
$176M5.5M0.01%Q1 202603
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$135M4.3M0.03%Q1 202604
Legal & General Group Plc
CIK 0000764068
$116M3.6M0.03%Q1 202605
STATE STREET CORP
CIK 0000093751
$104M3.3M0.00%Q1 202606
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$97M3.0M0.00%Q1 202607
Robeco Institutional Asset Management B.V.
CIK 0001418773
$90M2.1M0.11%Q2 202608
LSV ASSET MANAGEMENT
CIK 0001050470
$87M2.7M0.19%Q1 202609
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$58M1.8M0.00%Q1 202610
FIRST TRUST ADVISORS LP
CIK 0001125816· Index
$55M1.7M0.04%Q1 202611
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$38M1.2M0.02%Q1 202612
Allianz Asset Management GmbH
CIK 0001535323
$38M1.2M0.04%Q1 202613
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$34M1.1M0.01%Q1 202614
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$34M1.1M0.01%Q1 202615
NORTHERN TRUST CORP
CIK 0000073124· Index
$23M738K0.00%Q1 202616
MORGAN STANLEY
CIK 0000895421
$23M714K0.00%Q1 202617
SG Americas Securities, LLC
CIK 0001313360
$20M637K0.02%Q1 202618
BRIDGEWAY CAPITAL MANAGEMENT, LLC
CIK 0001107261
$20M634K0.41%Q1 202619
LAZARD ASSET MANAGEMENT LLC
CIK 0001207017
$19M585K0.03%Q1 202620
BARCLAYS PLC
CIK 0000312069
$18M561K0.00%Q1 2026
Page 1 of 16
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Insiders at NETSCOUT SYS INC
Downing John →Singhal Anil K →Szabados Michael →Munshi Sanjay →Grasso Alfred →Piazza Anthony John →Perretta Christopher →Hadzima Joseph G Jr →