Security Snapshot

NETSCOUT SYSTEMS INC - COMMON STOCK (NTCT) Institutional Ownership

CUSIP: 64115T104

13F Institutional Holders and Ownership History from Q1 2014 to Q3 2026

13F reference period

Q3 2026

Institutions Reporting

183

Shares (Excl. Options)

33.41MFull value: 33,410,766 · shares · 30 Sep 2026

Price

$40.18

The headline uses the Q3 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended.

Save this security page for your next review

Watchlists follow companies and investors, across their share classes. Bookmark this page to revisit this specific CUSIP and its quarterly holders. If you create an account from here, we will bring you back after verification.

Create free account and return here Sign in and return here Review latest holder period
Security type / class
Equity / COMMON STOCK
Symbol
NTCT on Nasdaq
All holders as of 30 Sep 2026
Q3 2026
Total 13F shares
33,410,766
Latest holder snapshot 5 signals
Total 13F value
$1,341,445,771
Portfolio coverage rank
0%
Share change
+1,154,537
Value change
+$45,772,165
Number of holders
183
Issuer context Names, identifiers, and filing context for this profile. 3 identity fields
Shares outstanding
72,733,714
SEC-reported price per share
$40.18
Insider filing price
$40.18
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source

Key facts

  • NTCT - NETSCOUT SYSTEMS INC - COMMON STOCK is tracked under CUSIP 64115T104.
  • 183 institutions reported positions in Q3 2026.
  • 6 significant owners is listed from Schedule 13D/13G reporting.

Change

  • Holder count moved from 316 to 183 between Q2 2026 and Q3 2026.
  • SEC-reported value moved from
    $2.99BFull value: $2,985,012,927 · USD · 30 Jun 2026
    to
    $1.34BFull value: $1,341,445,771 · USD · 30 Sep 2026
    .

Research use

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Evidence

Source: SEC Form 13F

Latest holder context comes from 183 institutions filings for Q3 2026.

Open SEC evidence

Security key

64115T104

13F reference period

Q3 2026

13F holders

183

13D/G owners

6

CIK / CUSIP context first

Open Q3 2026 holders NTCT full holder history NETSCOUT SYSTEMS INC SEC filings NETSCOUT SYSTEMS INC company facts NETSCOUT SYSTEMS INC insider transactions

Broader feeds

Latest 13F filings Latest 13D/G filings All securities

13D/G owners

Significant owners

Large-stake holder rows connected to Schedule 13D/G evidence.

Rows
6
Security
NTCT
Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
BlackRock, Inc. 15% -6.9% $273,895,689 -$20,938,237 10,603,782 -7.1% BlackRock, Inc. 30 Sep 2025
VANGUARD PORTFOLIO MANAGEMENT LLC 7.8% $178,421,819 5,612,461 Vanguard Portfolio Management 31 Mar 2026
Legal & General Investment Management Ltd 5.7% $100,178,799 4,037,807 Legal & General Group Plc 31 Dec 2023
Legal & General Group Plc 5% -22% $115,560,179 -$27,004,270 3,635,111 -19% Legal & General Group Plc 31 Mar 2026
VANGUARD CAPITAL MANAGEMENT LLC 5% -1% $145,165,759 +$1,105,111 3,612,886 +0.77% Vanguard Capital Management 30 Sep 2026
STATE STREET CORP 4.9% -2% $143,199,591 -$616,241 3,563,952 -0.43% STATE STREET CORPORATION 30 Sep 2026
As of 30 Sep 2026, 183 institutional investors reported holding
33.41MFull value: 33,410,766 · shares · 30 Sep 2026
shares of NETSCOUT SYSTEMS INC - COMMON STOCK (NTCT). This represents 46% of the company’s total
72.73MFull value: 72,733,714 · shares · Stored outstanding share count
outstanding shares.

13F concentration

Top 25 institutional shareholders

Largest 13F positions for this security by reported shares and value.

Top holder share
41%
Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
VANGUARD PORTFOLIO MANAGEMENT LLC 7.7% 5,631,004 +0.72% 0.01% $226,253,741
DIMENSIONAL FUND ADVISORS LP 6.1% 4,406,116 +1.8% 0.03% $177,030,643
STATE STREET CORP 4.9% 3,563,952 -0.43% 0% $143,199,591
VANGUARD CAPITAL MANAGEMENT LLC 4.2% 3,066,633 +0.38% 0% $123,217,314
GEODE CAPITAL MANAGEMENT, LLC 2.9% 2,126,720 -1.2% 0% $85,463,181
FIRST TRUST ADVISORS LP 2.8% 2,068,696 +5.4% 0.05% $83,120,205
Robeco Institutional Asset Management B.V. 2.6% 1,859,587 -9.6% 0.09% $74,718,205
Invesco Ltd. 1.6% 1,190,987 +251% 0% $47,853,857
Qube Research & Technologies Ltd 0.98% 712,442 +33% 0.03% $28,625,920
MORGAN STANLEY 0.84% 608,435 -10% 0% $24,446,985
Empowered Funds, LLC 0.67% 486,070 +43% 0.09% $19,530,292
Impax Asset Management Group plc 0.65% 470,000 0% 0.14% $18,884,600
VANGUARD FIDUCIARY TRUST CO 0.63% 459,050 +1.6% 0% $18,444,629
CSM Advisors, LLC 0.63% 458,652 -4.9% 0.4% $18,428,000
JUPITER ASSET MANAGEMENT LTD 0.58% 421,435 0% 0.08% $16,933,259
SEB Asset Management AB 0.48% 349,157 -4.5% 0.05% $14,029,106
Public Sector Pension Investment Board 0.39% 280,477 -8.7% 0.02% $11,252,737
Hillsdale Investment Management Inc. 0.34% 250,795 -19% 0.23% $10,076,943
First Eagle Investment Management, LLC 0.34% 249,202 +0.32% 0.02% $10,012,936
AMERICAN CENTURY COMPANIES INC 0.3% 215,529 +4.2% 0% $8,659,956
Connor, Clark & Lunn Investment Management Ltd. 0.28% 202,725 -1.3% 0.01% $8,145,491
LEUTHOLD GROUP, LLC 0.26% 189,517 +9.1% 0.71% $7,614,793
Creative Planning 0.22% 162,714 +2.4% 0% $6,537,868
Universal- Beteiligungs- und Servicegesellschaft mbH 0.22% 158,647 -12% 0.01% $6,374,437
Riverwater Partners LLC 0.2% 143,833 +10% 1.6% $5,779,210

Quarter history

Institutional holders across reporting periods

Holder count, reported shares/value, and median price by quarter.

Periods
51
Headline period
Q3 2026
Rows shown
1-25 of 51
Period 13F Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q3 33,410,766 $1,341,445,771 +$45,772,165 $40.18 183
2026 Q2 68,607,323 $2,985,012,927 +$88,551,145 $43.55 316
2026 Q1 66,789,295 $2,122,032,171 -$12,075,568 $31.79 288
2025 Q4 66,896,134 $1,810,388,035 +$31,065,354 $27.06 263
2025 Q3 65,443,724 $1,690,330,300 +$25,838,757 $25.83 243
2025 Q2 64,409,040 $1,597,975,180 -$5,931,623 $24.81 241
2025 Q1 64,851,748 $1,359,974,630 +$16,440,337 $21.01 232
2024 Q4 63,930,731 $1,384,860,132 -$8,216,738 $21.66 217
2024 Q3 64,310,095 $1,398,555,954 +$27,534,885 $21.75 213
2024 Q2 63,367,517 $1,159,535,404 -$33,521,388 $18.29 219
2024 Q1 65,012,237 $1,419,616,233 -$8,102,539 $21.84 204
2023 Q4 65,429,617 $1,436,169,596 +$11,400,719 $21.95 206
2023 Q3 64,638,067 $1,811,069,090 -$44,475,464 $28.02 212
2023 Q2 66,295,917 $2,051,574,982 +$20,199,434 $30.95 212
2023 Q1 63,226,608 $1,811,371,364 -$58,140,245 $28.65 217
2022 Q4 67,193,475 $2,184,375,185 -$57,480,610 $32.51 224
2022 Q3 68,992,610 $2,160,916,770 -$42,763,523 $31.32 206
2022 Q2 70,061,217 $2,371,681,052 +$47,556,579 $33.85 197
2022 Q1 68,946,398 $2,211,948,714 +$13,952,500 $32.08 207
2021 Q4 68,379,204 $2,261,284,923 +$49,043,426 $33.08 196
2021 Q3 67,407,900 $1,816,753,482 -$40,595,674 $26.95 181
2021 Q2 70,265,689 $2,005,473,033 +$2,936,166 $28.54 181
2021 Q1 70,180,277 $1,975,965,751 -$72,593,964 $28.16 182
2020 Q4 72,762,347 $1,995,508,733 +$9,215,148 $27.42 165
2020 Q3 72,500,586 $1,583,161,685 +$14,675,644 $21.83 167
We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. Manage preferences to update or revoke optional consent for future visits. For more information, see our Privacy Policy .