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Equibles

NTCT

Netscout Systems Inc

Company with tickers: NTCT

CIK
1078075
CUSIP
64115T104
Shares Outstanding
71,495,215
13F Activity (30d)
185 filings 180 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 286
Total Value: $2,112,996,279
Total Shares: 66,467,332
Showing 1–100 of 288 holdings by value · page 1 of 3

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 286 13F filers · Δ vs Dec 31, 2025
Top Holder
17.1%
Jun 2023 → Mar 2026 · range 17.0% – 18.7%
+0.1 pts
Top 5
42.3%
Jun 2023 → Mar 2026 · range 42.3% – 55.9%
−4.8 pts
Top 10
59.4%
Jun 2023 → Mar 2026 · range 59.4% – 70.6%
−1.6 pts
HHI
548
Jun 2023 → Mar 2026 · range 548 – 795
Broadly held −82

Quarterly Activity

vs Dec 31, 2025
New
53
Increased
105
Decreased
84
Sold Out
30
Unchanged
44
Holder count: +23
Institutional value: +16.7%
Shares held: -0.7%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega WELLINGTON MANAGEMENT GROUP LLP +478,917 1,077,196
Large LSV ASSET MANAGEMENT +457,416 2,745,452
Large Robeco Institutional Asset Management B.V. +452,336 2,011,528
Mega TWO SIGMA INVESTMENTS, LP +231,198 436,607
Mega UBS Group AG +217,791 285,344

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mega FIRST TRUST ADVISORS LP −775,198 1,744,535
Large PRUDENTIAL FINANCIAL INC −445,402 113,622
Large ACADIAN ASSET MANAGEMENT LLC −303,879 206,223
Large MARSHALL WACE, LLP −301,257 92,915
Mega Legal & General Group Plc −225,831 3,635,111

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD PORTFOLIO MANAGEMENT LLC 5,528,844 $175,761,950
Mega VANGUARD CAPITAL MANAGEMENT LLC 3,045,450 $96,814,855
Large SEB Asset Management AB 444,688 $14,136,631
Mega VANGUARD FIDUCIARY TRUST CO 443,219 $14,089,932
Large Alyeska Investment Group, L.P. 290,606 $9,238,364

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 9,057,337 $245,091,537
Mid Pacer Advisors, Inc. 379,036 $10,256,714
Mid Skandinaviska Enskilda Banken AB (publ) 354,843 $9,602,051
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 255,101 $6,903,033
Large TWO SIGMA ADVISERS, LP 114,500 $3,098,370
Filter: New 53 Increased 105 Reduced 84 Sold out 30 Unchanged 44
Showing 100 of 288
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $362,055,888 17.13% 11,388,987
Mega VANGUARD PORTFOLIO MANAGEMENT LLC $175,761,950 8.32% 5,528,844
Mega DIMENSIONAL FUND ADVISORS LP $135,392,781 6.41% 4,258,974
Mega Legal & General Group Plc $115,560,177 5.47% 3,635,111
Mega STATE STREET CORP $104,189,595 4.93% 3,277,433
Mega VANGUARD CAPITAL MANAGEMENT LLC $96,814,855 4.58% 3,045,450
Large LSV ASSET MANAGEMENT $87,277,919 4.13% 2,745,452
Large Robeco Institutional Asset Management B.V. $63,946,475 3.03% 2,011,528
Mega GEODE CAPITAL MANAGEMENT, LLC $58,317,578 2.76% 1,834,463
Mega FIRST TRUST ADVISORS LP $55,458,767 2.62% 1,744,535
Mega AQR CAPITAL MANAGEMENT LLC $38,152,638 1.81% 1,200,146
Large Allianz Asset Management GmbH $37,673,597 1.78% 1,185,077
Mega WELLINGTON MANAGEMENT GROUP LLP $34,244,058 1.62% 1,077,196
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $33,645,327 1.59% 1,058,362
Mega NORTHERN TRUST CORP Bank $23,453,672 1.11% 737,769
Mega MORGAN STANLEY $22,712,204 1.07% 714,445
Large SG Americas Securities, LLC Broker-Dealer $20,238,785 0.96% 636,640
Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC $20,156,099 0.95% 634,039
Large LAZARD ASSET MANAGEMENT LLC $18,598,389 0.88% 585,039
Mega BARCLAYS PLC $17,841,468 0.84% 561,229
Mega Nuveen, LLC $17,840,801 0.84% 561,208
Mega AMERIPRISE FINANCIAL INC $17,445,619 0.83% 548,777
Large Impax Asset Management Group plc $16,594,380 0.79% 522,000
Mid CSM Advisors, LLC $14,633,445 0.69% 460,316
Mega Invesco Ltd. $14,398,102 0.68% 452,913
Mega Bank of New York Mellon Corp Bank $14,284,229 0.68% 449,331
Large SEB Asset Management AB $14,136,631 0.67% 444,688
Mega VANGUARD FIDUCIARY TRUST CO Bank $14,089,932 0.67% 443,219
Mega TWO SIGMA INVESTMENTS, LP $13,879,736 0.66% 436,607
Mega VICTORY CAPITAL MANAGEMENT INC $13,869,818 0.66% 436,295
Large JUPITER ASSET MANAGEMENT LTD $13,397,418 0.63% 421,435
Mega DEUTSCHE BANK AG\ Bank $12,916,053 0.61% 406,293
Mega PRINCIPAL FINANCIAL GROUP INC $12,770,265 0.60% 401,707
Mega GOLDMAN SACHS GROUP INC $12,723,628 0.60% 400,240
Large Empowered Funds, LLC $12,414,725 0.59% 390,523
Mega FMR LLC $10,279,932 0.49% 323,370
Large Connor, Clark & Lunn Investment Management Ltd. $10,260,413 0.49% 322,756
Large Public Sector Pension Investment Board Pension $9,581,664 0.45% 301,405
Large Qube Research & Technologies Ltd $9,410,602 0.45% 296,024
Mid Penserra Capital Management LLC $9,321,400 0.44% 293,218
Mid Defiance ETFs, LLC Mutual Fund $9,321,400 0.44% 293,218
Large Alyeska Investment Group, L.P. $9,238,364 0.44% 290,606
Mega UBS Group AG $9,071,085 0.43% 285,344
Large Allspring Global Investments Holdings, LLC $9,026,643 0.43% 283,946
Mid Hillsdale Investment Management Inc. $8,916,936 0.42% 280,495
Large SEI INVESTMENTS CO $7,167,976 0.34% 225,479
Large Universal- Beteiligungs- und Servicegesellschaft mbH $7,077,948 0.33% 222,647
Large ACADIAN ASSET MANAGEMENT LLC $6,555,829 0.31% 206,223
Large First Eagle Investment Management, LLC $6,358,063 0.30% 200,002
Mega RHUMBLINE ADVISERS $6,247,879 0.30% 196,536
Mega AMERICAN CENTURY COMPANIES INC $5,983,068 0.28% 188,206
Large Bridgewater Associates, LP $5,954,648 0.28% 187,312
Small LEUTHOLD GROUP, LLC $5,813,691 0.28% 182,878
Mid Edgestream Partners, L.P. $5,448,519 0.26% 171,391
Large Russell Investments Group, Ltd. $5,280,444 0.25% 166,104
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $5,162,279 0.24% 162,387
Mega JPMORGAN CHASE & CO $5,082,456 0.24% 159,876
Mega BANK OF AMERICA CORP /DE/ Bank $4,829,122 0.23% 151,907
Mid IQ EQ FUND MANAGEMENT (IRELAND) Ltd $4,577,092 0.22% 143,979
Mega Swiss National Bank Bank $4,537,323 0.21% 142,728
Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. $4,377,291 0.21% 137,694
Large Creative Planning $4,253,883 0.20% 133,812
Large IEQ CAPITAL, LLC $4,193,863 0.20% 131,924
Mega JANE STREET GROUP, LLC $3,762,695 0.18% 118,361
Large PRUDENTIAL FINANCIAL INC $3,612,043 0.17% 113,622
Large BESSEMER GROUP INC $3,611,883 0.17% 113,617
Large MACKENZIE FINANCIAL CORP $3,608,101 0.17% 113,498
Large FEDERATED HERMES, INC. $3,586,324 0.17% 112,813
Mid MARTINGALE ASSET MANAGEMENT L P $3,516,609 0.17% 110,620
Mega D. E. Shaw & Co., Inc. $3,317,032 0.16% 104,342
Mid SEGALL BRYANT & HAMILL, LLC $3,142,218 0.15% 98,843
Mid Empirical Financial Services, LLC d.b.a. Empirical Wealth Management $2,976,656 0.14% 93,635
Large MARSHALL WACE, LLP $2,953,767 0.14% 92,915
Mid ALGERT GLOBAL LLC $2,888,280 0.14% 90,855
Mega HSBC HOLDINGS PLC $2,885,864 0.14% 90,779
Large GABELLI FUNDS LLC $2,861,100 0.14% 90,000
Small CLARK ESTATES INC/NY $2,826,512 0.13% 88,912
Mega Vanguard Global Advisers, LLC $2,675,541 0.13% 84,163
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $2,616,762 0.12% 82,314
Large CANADA LIFE ASSURANCE Co Insurance $2,604,777 0.12% 81,937
Mega PRICE T ROWE ASSOCIATES INC /MD/ $2,576,483 0.12% 81,047
Small Rodgers Brothers Inc. $2,516,973 0.12% 79,175
Small Integrated Quantitative Investments LLC $2,505,560 0.12% 78,816
Mid WEDGE CAPITAL MANAGEMENT L L P/NC $2,360,184 0.11% 74,243
Mega FRANKLIN RESOURCES INC $2,316,694 0.11% 72,875
Large NEW YORK STATE TEACHERS RETIREMENT SYSTEM Pension $2,314,566 0.11% 72,808
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $2,250,732 0.11% 70,800
Mid SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC $2,217,193 0.10% 69,745
Mega ALLIANCEBERNSTEIN L.P. $2,213,474 0.10% 69,628
Mid Inspire Investing, LLC $2,200,122 0.10% 69,208
Mega MILLENNIUM MANAGEMENT LLC $2,197,261 0.10% 69,118
Mega BNP PARIBAS ARBITRAGE, SA $2,181,016 0.10% 68,607
Large Squarepoint Ops LLC $2,052,966 0.10% 64,579
Mega CITADEL ADVISORS LLC $2,052,171 0.10% 64,554
Large KLP KAPITALFORVALTNING AS $2,040,918 0.10% 64,200
Mega VANGUARD ASSET MANAGEMENT, Ltd $2,001,180 0.09% 62,950
Large Mariner, LLC $1,983,823 0.09% 62,404
Mid New Age Alpha Advisors, LLC $1,976,575 0.09% 62,176
Mega Amundi $1,878,057 0.09% 59,077
Mega CITIGROUP INC $1,866,962 0.09% 58,728

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