NetScout Systems, Inc. (NTCT) Ownership
NTCT ownership summary
as of October 18, 2026- Institutions
- 98.0% of shares outstanding
- Insiders
- 4.81% of shares outstanding
- Shares outstanding
- 72.7M
- Float
- 69.0M shares available to trade
- Short interest
- 5.70% 3.3M shares short
- Days to cover
- 4.87 short interest down 9.4% vs prior month
- Institutions 98.02%
- Insiders 4.81%
NTCT top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 15.73% | 11.4M | $435.4M | +46,764 (+0.4%) | June 30, 2026 |
| 2 | Vanguard Portfolio Management, LLC | 7.69% | 5.6M | $212.8M | +61,999 (+1.1%) | June 30, 2026 |
| 3 | Dimensional Fund Advisors, Inc. | 5.95% | 4.3M | $164.8M | +69,023 (+1.6%) | June 30, 2026 |
| 4 | Legal & General Group PLC | 5.24% | 3.8M | $145.1M | +175,911 (+4.8%) | June 30, 2026 |
| 5 | State Street Corp | 4.92% | 3.6M | $136.3M | +301,856 (+9.2%) | June 30, 2026 |
| 6 | LSV Asset Management | 4.35% | 3.2M | $120.4M | +416,198 (+15.2%) | June 30, 2026 |
| 7 | Vanguard Capital Management, LLC | 4.20% | 3.1M | $116.3M | +9,696 (+0.3%) | June 30, 2026 |
| 8 | Geode Capital Management, LLC | 2.96% | 2.2M | $82.0M | +318,929 (+17.4%) | June 30, 2026 |
| 9 | Robeco Institutional Asset Management BV | 2.83% | 2.1M | $78.3M | +44,614 (+2.2%) | June 30, 2026 |
| 10 | First Trust Advisors L.P. | 2.70% | 2.0M | $74.7M | +218,298 (+12.5%) | June 30, 2026 |
| 11 | Wellington Management Company LLP | 1.73% | 1.3M | $47.9M | +181,380 (+16.8%) | June 30, 2026 |
| 12 | Allianz Asset Management AG | 1.72% | 1.3M | $47.7M | +68,077 (+5.7%) | June 30, 2026 |
| 13 | AQR Capital Management LLC | 1.46% | 1.1M | $40.3M | −140,336 (−11.7%) | June 30, 2026 |
| 14 | Ameriprise Financial Inc | 1.38% | 1.0M | $38.3M | +456,437 (+83.2%) | June 30, 2026 |
| 15 | Charles Schwab Investment Management Inc | 1.38% | 1.0M | $38.2M | −54,931 (−5.2%) | June 30, 2026 |
| 16 | Northern Trust Corp | 1.08% | 783K | $29.8M | +45,508 (+6.2%) | June 30, 2026 |
| 17 | Acadian Asset Management LLC | 1.06% | 768K | $29.2M | +561,845 (+272.4%) | June 30, 2026 |
| 18 | Morgan Stanley - Brokerage Accounts | 0.93% | 676K | $25.8M | −38,057 (−5.3%) | June 30, 2026 |
| 19 | Bridgeway Capital Management, LLC | 0.84% | 613K | $23.4M | −20,550 (−3.2%) | June 30, 2026 |
| 20 | Lazard Asset Management LLC | 0.81% | 592K | $22.5M | +6,559 (+1.1%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 16 holders added 3.0M shares and 4 cut 254K.
NTCT top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Core S&P Small-Cap ETF | 5.66% | 4.1M | $156.6M | +957 (+0.0%) | September 30, 2026 |
| 2 | L&G Cyber Security ETF | 5.38% | 3.9M | $148.9M | +39,697 (+1.0%) | September 30, 2026 |
| 3 | Vanguard MStar Total Stk Mkt Idx Invest | 2.96% | 2.2M | $82.0M | −3,107 (−0.1%) | August 31, 2026 |
| 4 | iShares Russell 2000 ETF | 2.60% | 1.9M | $71.9M | −21,760 (−1.1%) | September 30, 2026 |
| 5 | Vanguard Information Technology ETF | 2.46% | 1.8M | $68.1M | +4,113 (+0.2%) | September 30, 2026 |
| 6 | First Trust NASDAQ Cybersecurity ETF | 2.36% | 1.7M | $65.3M | — | September 30, 2026 |
| 7 | Vanguard Small Cap Index | 2.14% | 1.6M | $59.2M | −6,532 (−0.4%) | September 30, 2026 |
| 8 | Vanguard MStar Small Cap Value Index | 1.39% | 1.0M | $38.5M | +19,423 (+2.0%) | September 30, 2026 |
| 9 | DFA US Small Cap Value I | 1.34% | 977K | $37.2M | — | August 31, 2026 |
| 10 | PIMCO RAE US Small Instl | 1.11% | 810K | $30.9M | −18,461 (−2.2%) | June 30, 2026 |
| 11 | Fidelity Small Cap Index | 1.07% | 780K | $29.7M | +6,636 (+0.9%) | July 31, 2026 |
| 12 | iShares Russell 2000 Value ETF | 0.92% | 672K | $25.6M | +1,018 (+0.2%) | September 30, 2026 |
| 13 | State Street SPDR Port S&P 600 Sm CpETF | 0.87% | 632K | $24.1M | — | September 30, 2026 |
| 14 | DFA US Targeted Value I | 0.81% | 589K | $22.4M | — | August 31, 2026 |
| 15 | Invesco S&P SmallCap Momentum ETF | 0.77% | 560K | $21.3M | — | September 30, 2026 |
| 16 | Impax Small Cap Institutional | 0.65% | 470K | $17.9M | — | August 31, 2026 |
| 17 | Dimensional US Targeted Value ETF | 0.61% | 447K | $17.0M | — | September 30, 2026 |
| 18 | State Street® SPDR® S&P® Telecom ETF | 0.60% | 435K | $16.5M | +4,142 (+1.0%) | September 30, 2026 |
| 19 | Dimensional US Small Cap Value ETF | 0.58% | 424K | $16.2M | +140 (+0.0%) | September 24, 2026 |
| 20 | Vanguard Russell 2000 ETF | 0.57% | 415K | $15.8M | +4,675 (+1.1%) | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
NTCT insider transactions
latest 11| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-02-20 | John Downing | Sell | $30.00 | 3,000 | $90,000 |
| 2025-12-12 | Christopher Perretta | Sell | $28.01 | 10,000 | $280,100 |
| 2025-12-03 | Sanjay Munshi | Sell | $27.23 | 2,000 | $54,460 |
| 2025-11-06 | John Downing | Sell | $30.00 | 3,000 | $90,000 |
| 2025-11-03 | John Downing | Sell | $27.80 | 3,000 | $83,400 |
| 2025-08-27 | Alfred Grasso | Sell | $24.44 | 5,644 | $137,939 |
| 2025-08-26 | Alfred Grasso | Sell | $24.14 | 5,356 | $129,294 |
| 2025-08-22 | Michael Szabados | Sell | $22.91 | 4,000 | $91,640 |
| 2025-06-10 | Joseph G Hadzima Jr | Sell | $23.85 | 3,500 | $83,475 |
| 2025-05-29 | John Downing | Sell | $23.47 | 3,000 | $70,410 |
| 2025-05-13 | Michael Szabados | Sell | $22.77 | 7,500 | $170,775 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
NTCT shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns NTCT
Institutional investors own 98.0% of NetScout Systems's shares and insiders 4.81%. The largest holder is BlackRock Inc with 15.73% of the shares (11.4M), as of June 30, 2026. Among the top 20 institutions, 16 added shares and 4 reduced their stake in the latest filings. Short interest is 5.70% of the float, or 4.87 days of average trading volume. The share count rose 72.7% since 2014.
Related: NTCT analyst forecast, NTCT key metrics. See the NTCT stock overview for the latest quote and news.
NTCT ownership FAQ
Who owns the most NetScout Systems stock?
The largest shareholders of NetScout Systems are BlackRock Inc (15.73%), Vanguard Portfolio Management, LLC (7.69%), Dimensional Fund Advisors, Inc. (5.95%), Legal & General Group PLC (5.24%), State Street Corp (4.92%).
What percentage of NetScout Systems is owned by institutions?
Institutions hold 98.0% of NetScout Systems's shares outstanding; insiders hold 4.81%.
Which funds own NetScout Systems?
The largest fund holders of NetScout Systems are iShares Core S&P Small-Cap ETF (5.66%), L&G Cyber Security ETF (5.38%), Vanguard MStar Total Stk Mkt Idx Invest (2.96%), iShares Russell 2000 ETF (2.60%), Vanguard Information Technology ETF (2.46%).
What is NetScout Systems's short interest?
3.3M shares of NetScout Systems were sold short, 5.70% of the float; at the average daily volume it would take 4.87 days to cover.
Are insiders buying or selling NetScout Systems?
Of the latest 11 reported insider transactions in NetScout Systems (since May 13, 2025), 0 were purchases and 11 were sales.
How many shares of NetScout Systems are outstanding?
NetScout Systems has 72.7M shares outstanding, of which 69.0M are in the public float.