DaveManuel.com · Institutional Ownership · Who Owns It
NETSCOUT SYS INC (NTCT)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
317
Reporting holders
$3.0B
Reported value
94.7%
Of shares outstanding
0.1%
Calls
0.0%
Puts
+29
Holder change
Institutions report 68,852,138 shares against 72,707,312 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. A figure this high can overstate: where an adviser and a sub-adviser both report the same shares, both are counted.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $498.0M | 11,435,751 | 0.01% | 8q | HELD |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $243.5M | 5,590,843 | 0.01% | 2q | +1.1%+$2.7M |
| DIMENSIONAL FUND ADVISORS LP | $188.5M | 4,327,997 | 0.03% | 31q | +1.6%+$3.0M |
| Legal & General Group Plc | $166.0M | 3,811,022 | 0.03% | 31q | +4.8%+$7.7M |
| STATE STREET CORP | $155.9M | 3,579,289 | 0.00% | 31q | +9.2%+$13.1M |
| LSV ASSET MANAGEMENT | $137.7M | 3,161,650 | 0.25% | 14q | +15.2%+$18.1M |
| VANGUARD CAPITAL MANAGEMENT LLC | $133.1M | 3,055,146 | 0.00% | 2q | HELD |
| GEODE CAPITAL MANAGEMENT, LLC | $93.8M | 2,153,392 | 0.01% | 31q | +17.4%+$13.9M |
| Robeco Institutional Asset Management B.V. | $89.5M | 2,056,142 | 0.11% | 16q | +2.2%+$1.9M |
| FIRST TRUST ADVISORS LP | $85.5M | 1,962,833 | 0.05% | 31q | +12.5%+$9.5M |
| WELLINGTON MANAGEMENT GROUP LLP | $54.8M | 1,258,576 | 0.01% | 4q | +16.8%+$7.9M |
| Allianz Asset Management GmbH | $54.6M | 1,253,154 | 0.04% | 20q | +5.7%+$3.0M |
| AQR CAPITAL MANAGEMENT LLC | $45.8M | 1,059,810 | 0.02% | 27q | -11.7%-$6.1M |
| AMERIPRISE FINANCIAL INC | $43.8M | 1,005,214 | 0.01% | 31q | +83.2%+$19.9M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $43.7M | 1,003,431 | 0.01% | 31q | -5.2%-$2.4M |
| NORTHERN TRUST CORP | $34.1M | 783,277 | 0.00% | 31q | +6.2%+$2.0M |
| ACADIAN ASSET MANAGEMENT LLC | $33.4M | 768,068 | 0.04% | 28q | +272.4%+$24.5M |
| MORGAN STANLEY | $29.5M | 676,388 | 0.00% | 35q | -5.3%-$1.7M |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | $26.7M | 613,489 | 0.47% | 26q | -3.2%-$895.0K |
| LAZARD ASSET MANAGEMENT LLC | $25.8M | 591,598 | 0.04% | 7q | +1.1%+$285.6K |
| FMR LLC | $25.7M | 590,593 | 0.00% | 31q | +82.6%+$11.6M |
| Nuveen, LLC | $25.5M | 584,926 | 0.01% | 6q | +4.2%+$1.0M |
| Qube Research & Technologies Ltd | $23.3M | 534,625 | 0.02% | 18q | +80.6%+$10.4M |
| First Eagle Investment Management, LLC | $21.6M | 496,804 | 0.02% | 12q | +148.4%+$12.9M |
| CSM Advisors, LLC | $21.0M | 482,271 | 0.45% | 3q | +4.8%+$956.1K |
| Impax Asset Management Group plc | $20.5M | 470,000 | 0.13% | 9q | -10.0%-$2.3M |
| Bank of New York Mellon Corp | $19.7M | 452,403 | 0.00% | 31q | +0.7%+$133.8K |
| VANGUARD FIDUCIARY TRUST CO | $19.7M | 452,005 | 0.00% | 2q | +2.0%+$382.6K |
| TWO SIGMA INVESTMENTS, LP | $19.6M | 449,621 | 0.01% | 9q | +3.0%+$566.8K |
| MILLENNIUM MANAGEMENT LLC | $18.8M | 432,729 | 0.01% | 15q | +526.1%+$15.8M |
| JUPITER ASSET MANAGEMENT LTD | $18.4M | 421,435 | 0.09% | 5q | HELD |
| PRINCIPAL FINANCIAL GROUP INC | $17.5M | 402,439 | 0.01% | 31q | HELD |
| VICTORY CAPITAL MANAGEMENT INC | $16.3M | 375,065 | 0.01% | 28q | -14.0%-$2.7M |
| SEB Asset Management AB | $15.9M | 365,685 | 0.06% | 2q | -17.8%-$3.4M |
| Empowered Funds, LLC | $14.8M | 340,099 | 0.08% | 4q | -12.9%-$2.2M |
| Invesco Ltd. | $14.8M | 338,925 | 0.00% | 31q | -25.2%-$5.0M |
| GOLDMAN SACHS GROUP INC | $14.3M | 329,249 | 0.00% | 31q | -17.7%-$3.1M |
| Hillsdale Investment Management Inc. | $13.4M | 307,795 | 0.31% | 5q | +9.7%+$1.2M |
| Public Sector Pension Investment Board | $13.4M | 307,164 | 0.03% | 20q | +1.9%+$250.8K |
| SEI INVESTMENTS CO | $13.1M | 300,942 | 0.01% | 9q | +33.5%+$3.3M |
| Penserra Capital Management LLC | $12.4M | 285,635 | 0.10% | 5q | -2.6%-$330.2K |
| Defiance ETFs, LLC | $12.3M | 285,635 | 0.17% | 3q | -2.6%-$325.7K |
| Clark Capital Management Group, Inc. | $11.6M | 267,486 | 0.06% | new | NEW |
| BARCLAYS PLC | $11.5M | 264,176 | 0.00% | 31q | -52.9%-$12.9M |
| Pacer Advisors, Inc. | $11.5M | 263,824 | 0.03% | 24q | -30.2%-$5.0M |
| CITADEL ADVISORS LLC | $11.5M incl. $248.2K options CALL | 257,561 | 0.00% | 23q | +299.0%+$8.6M |
| Russell Investments Group, Ltd. | $10.7M | 246,874 | 0.01% | 31q | +48.6%+$3.5M |
| Allspring Global Investments Holdings, LLC | $9.7M | 224,996 | 0.01% | 5q | -20.8%-$2.5M |
| AMERICAN CENTURY COMPANIES INC | $9.0M | 206,809 | 0.00% | 9q | +9.9%+$810.2K |
| Connor, Clark & Lunn Investment Management Ltd. | $8.9M | 205,477 | 0.02% | 9q | -36.3%-$5.1M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | $7.9M | 180,896 | 0.01% | 6q | -18.8%-$1.8M |
| DEUTSCHE BANK AG\ | $7.7M | 177,624 | 0.00% | 34q | -56.3%-$10.0M |
| RHUMBLINE ADVISERS | $7.7M | 176,834 | 0.01% | 31q | -10.0%-$858.0K |
| LEUTHOLD GROUP, LLC | $7.6M | 173,744 | 0.76% | 4q | -5.0%-$397.8K |
| BANK OF AMERICA CORP /DE/ | $7.1M | 162,924 | 0.00% | 31q | +7.3%+$479.8K |
| Creative Planning | $6.9M | 158,890 | 0.00% | 20q | +18.7%+$1.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $6.4M | 147,875 | 0.00% | 31q | -8.9%-$632.0K |
| HSBC HOLDINGS PLC | $6.4M | 147,138 | 0.00% | 12q | +62.1%+$2.5M |
| JPMORGAN CHASE & CO | $6.0M | 139,385 | 0.00% | 31q | -12.8%-$887.9K |
| Swiss National Bank | $6.0M | 137,728 | 0.00% | 31q | -3.5%-$217.7K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $5.9M | 136,213 | 0.01% | 5q | -1.1%-$64.5K |
| ALGERT GLOBAL LLC | $5.7M | 130,935 | 0.07% | 6q | +44.1%+$1.7M |
| Riverwater Partners LLC | $5.7M | 130,664 | 1.69% | 2q | +210.0%+$3.9M |
| SG Americas Securities, LLC | $5.2M | 119,662 | 0.00% | 8q | -81.2%-$22.5M |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd | $5.2M | 119,631 | 0.33% | 25q | -16.9%-$1.1M |
| PRUDENTIAL FINANCIAL INC | $5.1M | 118,202 | 0.01% | 31q | +4.0%+$199.5K |
| BESSEMER GROUP INC | $4.9M | 113,617 | 0.01% | 13q | HELD |
| MARTINGALE ASSET MANAGEMENT L P | $4.8M | 109,218 | 0.11% | 19q | -1.3%-$61.1K |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | $4.8M | 109,158 | 0.02% | 3q | +117.3%+$2.6M |
| CANADA LIFE ASSURANCE Co | $4.7M | 107,518 | 0.01% | 27q | +31.2%+$1.1M |
| IEQ CAPITAL, LLC | $4.5M | 102,819 | 0.02% | 7q | -22.1%-$1.3M |
| GABELLI FUNDS LLC | $4.4M | 100,000 | 0.03% | 5q | +11.1%+$435.5K |
| Bridgewater Associates, LP | $4.3M | 99,831 | 0.02% | 4q | -46.7%-$3.8M |
| FEDERATED HERMES, INC. | $4.2M | 97,172 | 0.01% | 11q | -13.9%-$681.2K |
| PRICE T ROWE ASSOCIATES INC /MD/ | $4.1M | 95,037 | 0.00% | 31q | +17.3%+$609.4K |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | $4.1M | 94,629 | 0.06% | 4q | +1.1%+$43.3K |
| SEGALL BRYANT & HAMILL, LLC | $4.0M | 91,609 | 0.05% | 6q | -7.3%-$315.0K |
| UBS Group AG | $3.9M | 89,484 | 0.00% | 31q | -68.6%-$8.5M |
| WELLS FARGO & COMPANY/MN | $3.7M | 85,981 | 0.00% | 31q | +79.3%+$1.7M |
| RITHOLTZ WEALTH MANAGEMENT | $3.7M | 85,551 | 0.06% | 3q | +61.2%+$1.4M |
| WEDGE CAPITAL MANAGEMENT L L P/NC | $3.7M | 84,687 | 0.06% | 13q | +14.1%+$454.8K |
| Rodgers Brothers Inc. | $3.4M | 78,175 | 0.33% | 11q | -1.3%-$43.5K |
| CITIGROUP INC | $3.3M | 76,853 | 0.00% | 31q | +30.9%+$789.3K |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $3.3M | 76,100 | 0.00% | 31q | -7.5%-$270.6K |
| FRANKLIN RESOURCES INC | $3.2M | 72,655 | 0.00% | 26q | HELD |
| Odyssean, LLC | $3.1M | 71,772 | 0.51% | 3q | +44.1%+$956.4K |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | $3.0M | 69,745 | 0.06% | 4q | HELD |
| ALLIANCEBERNSTEIN L.P. | $3.0M | 93,118 | 0.00% | 31q | +33.7%+$746.7K |
| KLP KAPITALFORVALTNING AS | $2.8M | 64,200 | 0.01% | 7q | HELD |
| VANGUARD ASSET MANAGEMENT, Ltd | $2.7M | 62,950 | 0.00% | 2q | HELD |
| Trexquant Investment LP | $2.7M | 62,856 | 0.02% | 3q | +65.0%+$1.1M |
| New Age Alpha Advisors, LLC | $2.7M | 61,978 | 0.11% | 5q | HELD |
| Integrated Quantitative Investments LLC | $2.6M | 59,664 | 0.43% | 6q | -24.3%-$834.1K |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM | $2.5M | 56,787 | 0.00% | 31q | -22.0%-$697.7K |
| Dakota Wealth Management | $2.4M | 55,746 | 0.05% | 2q | +92.3%+$1.2M |
| PICTON MAHONEY ASSET MANAGEMENT | $2.4M | 55,705 | 0.02% | 8q | +247.3%+$1.7M |
| Mariner, LLC | $2.4M | 54,006 | 0.00% | 8q | -13.5%-$365.7K |
| COMPASS FINANCIAL MANAGEMENT LLC | $2.3M | 54,181 | 0.28% | new | FIRST |
| EXCHANGE TRADED CONCEPTS, LLC | $2.3M | 53,305 | 0.01% | 4q | +4.6%+$101.6K |
| ROYCE & ASSOCIATES LP | $2.3M | 51,994 | 0.02% | 18q | -2.1%-$49.4K |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-10-30 | 13G/A | Vanguard Capital Management | 5.0% |
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-10-26 | 2026-10-22 | Directors or officers departed or appointed | filing |
| 2026-09-11 | 2026-09-09 | Directors or officers departed or appointed | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-08 | DOWNING JOHN | EVP, World-Wide Sales | Sold | 8,000 | $322.3K |
| 2026-08-11 | DOWNING JOHN | EVP, Worldwide Sales Ops | Sold | 8,000 | $307.3K |
| 2026-09-11 | Perretta Christopher | Director | Sold | 7,000 | $266.0K |
| 2026-05-12 | Grasso Alfred | Director | Sold | 5,000 | $203.3K |
| 2026-05-15 | SZABADOS MICHAEL | Director | Sold | 4,000 | $153.6K |
| 2026-08-25 | SZABADOS MICHAEL | Director | Sold | 4,000 | $150.8K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 69 | $108.2M | 2,709,873 | 9 | 20 | 14 | 0.0% |
| Q2 2026 | 317 | $3.0B | 68,852,138 | 51 | 104 | 100 | 0.1% |
| Q1 2026 | 288 | $2.1B | 66,789,295 | 46 | 98 | 82 | 0.1% |
| Q4 2025 | 264 | $1.8B | 66,966,802 | 38 | 96 | 79 | 0.1% |
| Q3 2025 | 245 | $1.7B | 65,790,120 | 29 | 99 | 71 | 0.0% |
| Q2 2025 | 241 | $1.6B | 65,009,698 | 34 | 81 | 86 | 0.3% |
| Q1 2025 | 233 | $1.4B | 64,995,272 | 30 | 88 | 74 | 0.0% |
| Q4 2024 | 218 | $1.4B | 64,175,319 | 23 | 86 | 62 | 0.0% |
| Q3 2024 | 215 | $1.4B | 64,475,054 | 22 | 71 | 89 | 0.0% |
| Q2 2024 | 219 | $1.2B | 63,833,677 | 41 | 71 | 68 | 0.1% |
| Q1 2024 | 209 | $1.5B | 68,055,609 | 28 | 68 | 79 | 0.4% |
| Q4 2023 | 208 | $1.5B | 66,752,185 | 28 | 79 | 62 | 0.3% |
| Q3 2023 | 214 | $1.8B | 64,610,735 | 20 | 89 | 65 | 0.0% |
| Q2 2023 | 214 | $2.1B | 68,880,479 | 32 | 67 | 75 | 0.0% |
| Q1 2023 | 220 | $2.8B | 68,192,249 | 24 | 83 | 79 | 0.0% |
| Q4 2022 | 225 | $2.2B | 67,071,876 | 33 | 79 | 71 | 0.0% |
| Q3 2022 | 203 | $2.3B | 73,121,397 | 22 | 65 | 82 | 0.1% |
| Q2 2022 | 202 | $2.5B | 74,292,563 | 26 | 59 | 73 | 0.4% |
| Q1 2022 | 207 | $2.3B | 73,072,440 | 32 | 66 | 57 | 0.1% |
| Q4 2021 | 196 | $2.9B | 87,223,282 | 36 | 66 | 62 | 0.1% |
| Q3 2021 | 180 | $2.7B | 98,520,412 | 19 | 51 | 67 | 0.1% |
| Q2 2021 | 180 | $2.9B | 102,011,171 | 25 | 45 | 71 | 0.0% |
| Q1 2021 | 180 | $2.9B | 102,805,606 | 28 | 47 | 67 | 0.1% |
| Q4 2020 | 166 | $2.9B | 106,063,743 | 21 | 52 | 61 | 0.1% |
| Q3 2020 | 165 | $3.2B | 147,094,357 | 10 | 57 | 64 | 0.0% |
| Q2 2020 | 190 | $4.0B | 154,678,388 | 33 | 45 | 80 | 0.0% |
| Q1 2020 | 183 | $6.1B | 255,980,630 | 27 | 49 | 63 | 0.0% |
| Q4 2019 | 193 | $4.4B | 181,501,239 | 33 | 50 | 68 | 0.0% |
| Q3 2019 | 181 | $4.2B | 184,014,639 | 13 | 45 | 79 | 0.0% |
| Q2 2019 | 199 | $4.8B | 188,568,290 | 32 | 51 | 59 | 0.0% |
| Q1 2019 | 193 | $5.5B | 194,726,238 | 21 | 52 | 62 | 0.1% |
| Q4 2018 | 202 | $4.9B | 207,553,124 | 4 | 2 | 5 | 0.0% |