NTCT Institutional Ownership & Shareholders
NETSCOUT SYSTEMS INC (NTCT) is currently held by 305 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $2.95B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of NTCT tracked by InsiderSet, reporting ownership valued at approximately $498.03M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $430.21M, representing an estimated loss of -13.62% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 60% of the total disclosed NTCT value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Portfolio Management Llc, Dimensional Fund Advisors Lp, and several other long-term asset managers with concentrated positions in NETSCOUT SYSTEMS INC (NTCT).
This page ranks the largest institutional NTCT shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
305
Total Reported Value
$2.95B
Largest Holder
Blackrock, Inc.
Largest Position
$498.03M
Insider Transactions (90d)
20
Latest Filing Quarter
Q2 2026
New Institutional Positions
56
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 11,435,751 | $498,026,960 | $430,212,953 | -$67,814,007 | -13.62% | |
| Vanguard Portfolio Management Llc | 0.01% | 5,590,843 | $243,481,213 | $210,327,514 | -$33,153,699 | -13.62% | |
| Dimensional Fund Advisors Lp | 0.03% | 4,327,997 | $188,478,386 | $162,819,247 | -$25,659,139 | -13.61% | |
| Legal & General Group Plc | 0.03% | 3,811,022 | $165,970,006 | $143,370,648 | -$22,599,358 | -13.62% | |
| State Street Corp | 0.00% | 3,579,289 | $155,878,036 | $134,652,852 | -$21,225,184 | -13.62% | |
| Lsv Asset Management | 0.25% | 3,161,650 | $137,690,000 | $118,941,273 | -$18,748,727 | -13.62% | |
| Vanguard Capital Management Llc | 0.00% | 3,055,146 | $133,051,608 | $114,934,593 | -$18,117,015 | -13.62% | |
| Geode Capital Management, Llc | 0.01% | 2,153,392 | $93,792,512 | $81,010,607 | -$12,781,905 | -13.63% | |
| First Trust Advisors Lp | 0.05% | 1,962,833 | $85,481,377 | $73,841,777 | -$11,639,600 | -13.62% | |
| Robeco Institutional Asset Management B.V. | 0.09% | 1,859,587 | $74,718,205 | $69,957,663 | -$4,760,542 | -6.37% | |
| Wellington Management Group Llp | 0.01% | 1,258,576 | $54,810,986 | $47,347,629 | -$7,463,357 | -13.62% | |
| Allianz Asset Management Gmbh | 0.05% | 1,253,154 | $54,574,857 | $47,143,653 | -$7,431,204 | -13.62% | |
| Aqr Capital Management Llc | 0.02% | 1,059,810 | $45,847,397 | $39,870,052 | -$5,977,345 | -13.04% | |
| Ameriprise Financial Inc | 0.01% | 1,005,214 | $43,777,074 | $37,816,151 | -$5,960,923 | -13.62% | |
| Charles Schwab Investment Management Inc | 0.01% | 1,003,431 | $43,699,420 | $37,749,074 | -$5,950,346 | -13.62% | |
| Northern Trust Corp | 0.00% | 783,277 | $34,111,713 | $29,466,881 | -$4,644,832 | -13.62% | |
| Acadian Asset Management Llc | 0.04% | 768,068 | $33,438,000 | $28,894,718 | -$4,543,282 | -13.59% | |
| Morgan Stanley | 0.00% | 676,388 | $29,456,721 | $25,445,717 | -$4,011,004 | -13.62% | |
| Bridgeway Capital Management, Llc | 0.47% | 613,489 | $26,717,446 | $23,079,456 | -$3,637,990 | -13.62% | |
| Lazard Asset Management Llc | 0.04% | 591,598 | $25,764,093 | $22,255,917 | -$3,508,176 | -13.62% | |
| Fmr Llc | 0.00% | 590,593 | $25,720,310 | $22,218,109 | -$3,502,201 | -13.62% | |
| Nuveen, Llc | 0.01% | 584,926 | $25,473,528 | $22,004,916 | -$3,468,612 | -13.62% | |
| Qube Research & Technologies Ltd | 0.03% | 534,625 | $23,282,919 | $20,112,593 | -$3,170,327 | -13.62% | |
| Csm Advisors, Llc | 0.45% | 482,271 | $21,002,000 | $18,143,035 | -$2,858,965 | -13.61% | |
| Impax Asset Management Group Plc | 0.13% | 470,000 | $20,468,500 | $17,681,400 | -$2,787,100 | -13.62% | |
| Bank Of New York Mellon Corp | 0.00% | 452,403 | $19,702,152 | $17,019,401 | -$2,682,751 | -13.62% | |
| Vanguard Fiduciary Trust Co | 0.00% | 452,005 | $19,684,818 | $17,004,428 | -$2,680,390 | -13.62% | |
| Two Sigma Investments, Lp | 0.01% | 449,621 | $19,580,995 | $16,914,742 | -$2,666,253 | -13.62% | |
| Millennium Management Llc | 0.01% | 432,729 | $18,845,348 | $16,279,265 | -$2,566,083 | -13.62% | |
| Jupiter Asset Management Ltd | 0.09% | 421,435 | $18,353,494 | $15,854,385 | -$2,499,109 | -13.62% | |
| Principal Financial Group Inc | 0.01% | 423,532 | $17,017,516 | $15,933,274 | -$1,084,242 | -6.37% | |
| Victory Capital Management Inc | 0.01% | 375,065 | $16,334,080 | $14,109,945 | -$2,224,135 | -13.62% | |
| Seb Asset Management Ab | 0.06% | 365,685 | $15,925,551 | $13,757,070 | -$2,168,481 | -13.62% | |
| Empowered Funds, Llc | 0.08% | 340,099 | $14,811,311 | $12,794,524 | -$2,016,787 | -13.62% | |
| Invesco Ltd. | 0.00% | 338,925 | $14,760,184 | $12,750,359 | -$2,009,826 | -13.62% | |
| Goldman Sachs Group Inc | 0.00% | 329,249 | $14,338,794 | $12,386,347 | -$1,952,447 | -13.62% | |
| Hillsdale Investment Management Inc. | 0.31% | 307,795 | $13,404,472 | $11,579,248 | -$1,825,224 | -13.62% | |
| Public Sector Pension Investment Board | 0.04% | 307,164 | $13,376,992 | $11,555,510 | -$1,821,482 | -13.62% | |
| Sei Investments Co | 0.01% | 300,942 | $13,105,938 | $11,321,438 | -$1,784,500 | -13.62% | |
| Penserra Capital Management Llc | 0.10% | 285,635 | $12,439,000 | $10,745,589 | -$1,693,411 | -13.61% | |
| Defiance Etfs, Llc | 0.17% | 285,635 | $12,268,023 | $10,745,589 | -$1,522,434 | -12.41% | |
| Clark Capital Management Group, Inc. | 0.06% | 267,486 | $11,649,015 | $10,062,823 | -$1,586,192 | -13.62% | |
| Barclays Plc | 0.00% | 264,176 | $11,504,866 | $9,938,301 | -$1,566,565 | -13.62% | |
| Pacer Advisors, Inc. | 0.03% | 263,824 | $11,490,000 | $9,925,059 | -$1,564,941 | -13.62% | |
| Citadel Advisors Llc | 0.01% | 257,561 | $11,216,782 | $9,689,445 | -$1,527,337 | -13.62% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.02% | 248,402 | $10,817,907 | $9,344,883 | -$1,473,024 | -13.62% |
| Russell Investments Group, Ltd. | 0.01% | 246,874 | $10,694,727 | $9,287,400 | -$1,407,327 | -13.16% | |
| Allspring Global Investments Holdings, Llc | 0.01% | 224,996 | $9,663,578 | $8,464,350 | -$1,199,228 | -12.41% | |
| American Century Companies Inc | 0.00% | 206,809 | $9,006,532 | $7,780,155 | -$1,226,377 | -13.62% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.02% | 205,477 | $8,948,523 | $7,730,045 | -$1,218,478 | -13.62% |
Frequently asked questions about NTCT
Who are the largest institutional holders of NTCT?
The largest institutional holders of NTCT reported in the latest SEC Form 13F filings include Blackrock, Inc., Vanguard Portfolio Management Llc, Dimensional Fund Advisors Lp, Legal & General Group Plc, and State Street Corp. InsiderSet ranks institutional holders by their latest reported NTCT position.
What is NTCT institutional ownership?
This page tracks NTCT positions reported by institutional investment managers through SEC Form 13F. NETSCOUT SYSTEMS INC (NTCT) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own NTCT?
InsiderSet currently tracks 305 institutional managers reporting NTCT holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of NTCT shareholders.
How much NTCT stock do institutions own?
Institutional investment managers disclosed approximately $2.95B in NTCT holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was NTCT institutional ownership last updated?
The latest NTCT institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional NTCT holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its NTCT position after the reporting date.
Are institutions buying or selling NTCT?
Institutional buying and selling can be analyzed by comparing NTCT positions across consecutive 13F reporting periods. InsiderSet's NTCT Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View NTCT ownership changes.
How has NTCT institutional ownership changed over time?
InsiderSet tracks NTCT institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.