# NETSCOUT SYS INC COM

NETSCOUT SYS INC COM is a security (CUSIP 64115T104) tracked across SEC portfolio filings. 301 institutional managers reported $1.9B on Form 13F as of 2026-06-30; 22 registered fund positions totaling $80.4M via N-PORT as of 2026-06-30.

## Summary

- Issuer: NETSCOUT SYS INC
- Class: COM
- CUSIP: 64115T104
- Asset category: EC
- 13F holders: 301
- 13F value: $1.9B
- 13F period: 2026-06-30
- N-PORT fund positions: 22
- N-PORT value: $80.4M
- N-PORT report: 2026-06-30

## Top institutional holders (Form 13F)

_Showing 15 of 301 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $362.1M | 11,388,987 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $245.1M | 9,057,337 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $135.4M | 4,258,974 |
| Legal & General Group Plc | London, X0 | $115.6M | 3,635,111 |
| STATE STREET CORP | BOSTON, MA | $104.2M | 3,277,433 |
| Robeco Institutional Asset Management B.V. | ROTTERDAM, P7 | $89.5M | 2,056,142 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $58.3M | 1,834,463 |
| FIRST TRUST ADVISORS LP | Wheaton, IL | $55.5M | 1,744,535 |
| [AQR CAPITAL MANAGEMENT LLC](https://search.stillhousedata.com/firm/111883) | Greenwich, CT | $37.8M | 1,200,146 |
| Allianz Asset Management GmbH | MUNICH, 2M | $37.7M | 1,185,077 |
| WELLINGTON MANAGEMENT GROUP LLP | BOSTON, MA | $34.2M | 1,077,196 |
| [CHARLES SCHWAB INVESTMENT MANAGEMENT INC](https://search.stillhousedata.com/firm/106753) | SAN FRANCISCO, CA | $33.6M | 1,058,362 |
| NORTHERN TRUST CORP | CHICAGO, IL | $23.5M | 737,769 |
| MORGAN STANLEY | NEW YORK, NY | $22.7M | 714,445 |
| [BRIDGEWAY CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/111441) | HOUSTON, TX | $20.2M | 634,039 |

## Top fund holders (N-PORT)

_Showing 15 of 22 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $24.3M | 2.99% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $15.0M | 8.53% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $9.7M | 13.02% |
| [ETFMG Prime Cyber Security ETF](https://search.stillhousedata.com/fund/S000047480) | ETF Managers Trust | $8.4M | 50.70% |
| [Keeley Small Cap Fund](https://search.stillhousedata.com/fund/S000001085) | Teton Westwood Funds | $5.7M | 666.59% |
| [NORTH SQUARE SMALL CAP VALUE FUND](https://search.stillhousedata.com/fund/S000091143) | Valued Advisers Trust | $5.1M | 242.89% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $3.7M | 7.58% |
| ROYCE SMALL-CAP TRUST, INC. | ROYCE SMALL-CAP TRUST, INC. | $1.6M | 7.13% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $1.2M | 0.21% |
| [Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF](https://search.stillhousedata.com/fund/S000048296) | Goldman Sachs ETF Trust | $1.2M | 12.06% |
| [BNY Mellon Smallcap Stock Index Fund](https://search.stillhousedata.com/fund/S000000132) | BNY MELLON INDEX FUNDS, INC. | $1.2M | 13.70% |
| [Fidelity Nasdaq Composite Index ETF](https://search.stillhousedata.com/fund/S000006011) | Fidelity Commonwealth Trust | $1.1M | 1.05% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $1.1M | 0.36% |
| [VANGUARD U.S. MOMENTUM FACTOR ETF](https://search.stillhousedata.com/fund/S000061302) | VANGUARD WELLINGTON FUND | $832K | 4.53% |
| [Vericimetry U.S. Small Cap Value Fund](https://search.stillhousedata.com/fund/S000033942) | VERICIMETRY FUNDS | $313K | 18.62% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/64115T104.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.