NetScout Systems, Inc.
US ˙ NasdaqGS ˙ US64115T1043

SecurityNTCT / NetScout Systems, Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership714,445 shares
Latest Disclosed Value $ 22,712,219
Morgan Stanley reports 21.78% decrease in ownership of NTCT / NetScout Systems, Inc.

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 714,445 shares of NetScout Systems, Inc. (US:NTCT) valued at $22,712,207 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 913,334 shares of NetScout Systems, Inc.. This represents a change in shares of -21.78% during the quarter. The current value of the position is $30,149,579 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F NETSCOUT SYS COM 64115T104 714,445 -198,889 -21.78 22,712 -8.10 0.0014
2026-05-27 2025-12-31 13F/A-1 NETSCOUT SYS COM 64115T104 913,334 -41,594 -4.36 24,715 0.20 0.0015
2026-02-13 2025-12-31 13F NETSCOUT SYS COM 64115T104 913,334 -41,594 24,715 0.0015
2026-05-27 2025-09-30 13F/A-1 NETSCOUT SYS COM 64115T104 954,928 -164,013 -14.66 24,666 -11.15 0.0015
2025-11-14 2025-09-30 13F NETSCOUT SYS COM 64115T104 954,928 -164,013 24,666 0.0015
2025-08-15 2025-06-30 13F NETSCOUT SYS COM 64115T104 1,118,941 -354,306 -24.05 27,761 -10.31 0.0018
2025-05-15 2025-03-31 13F NETSCOUT SYS COM 64115T104 1,473,247 107,449 7.87 30,953 4.63 0.0022
2025-05-15 2024-12-31 13F/A-1 NETSCOUT SYS COM 64115T104 1,365,798 -647,096 -32.15 29,583 -32.43 0.0021
2025-02-14 2024-12-31 13F NETSCOUT SYS COM 64115T104 1,365,798 -647,096 29,583 0.0021
2025-05-14 2024-09-30 13F/A-2 NETSCOUT SYS COM 64115T104 2,012,894 473,296 30.74 43,780 55.47 0.0032
2025-02-14 2024-09-30 13F/A-1 NETSCOUT SYS COM 64115T104 2,012,894 473,296 43,780 0.0032
2024-11-14 2024-09-30 13F NETSCOUT SYS COM 64115T104 2,012,894 473,296 43,780 0.0004
2025-05-14 2024-06-30 13F/A-2 NETSCOUT SYS COM 64115T104 1,539,598 262,845 20.59 28,159 0.99 0.0022
2024-10-17 2024-06-30 13F/A-1 NETSCOUT SYS COM 64115T104 1,539,598 262,845 28,159 0.0022
2024-08-14 2024-06-30 13F NETSCOUT SYS COM 64115T104 1,539,598 262,845 28,159 0.0022
2024-10-17 2024-03-31 13F/A-2 NETSCOUT SYS COM 64115T104 1,276,753 262,301 25.86 27,884 25.23 0.0022
2024-08-16 2024-03-31 13F/A-1 NETSCOUT SYS COM 64115T104 1,276,753 262,301 27,884 0.0003
2024-05-15 2024-03-31 13F NETSCOUT SYS COM 64115T104 1,276,753 262,301 27,884 0.0022
2024-08-16 2023-12-31 13F/A-1 NETSCOUT SYS COM 64115T104 1,014,452 490,187 93.50 22,267 51.59 0.0020
2024-02-13 2023-12-31 13F NETSCOUT SYS COM 64115T104 1,014,452 490,187 22,267 0.0020
2023-11-15 2023-09-30 13F NETSCOUT SYS COM 64115T104 524,265 84,016 19.08 14,690 7.81 0.0015
2023-08-14 2023-06-30 13F NETSCOUT SYS COM 64115T104 440,249 -33,436 -7.06 13,626 0.40 0.0013
2023-05-15 2023-03-31 13F NETSCOUT SYS COM 64115T104 473,685 -223,434 -32.05 13,571 -40.12 0.0015
2023-02-14 2022-12-31 13F NETSCOUT SYS COM 64115T104 697,119 238,937 52.15 22,663 57.92 0.0026
2022-11-14 2022-09-30 13F NETSCOUT SYS COM 64115T104 458,182 -181,768 -28.40 14,351 -33.75 0.0020
2022-10-27 2022-06-30 13F/A-1 NETSCOUT SYS COM 64115T104 639,950 279,351 77.47 21,662 87.24 0.0028
2022-08-15 2022-06-30 13F NETSCOUT SYS COM 64115T104 639,950 279,351 21,662 0.0006
2022-10-27 2022-03-31 13F/A-1 NETSCOUT SYS COM 64115T104 360,599 -55,967 -13.44 11,569 -16.04 0.0016
2022-05-13 2022-03-31 13F NETSCOUT SYS COM 64115T104 360,599 -55,967 11,569 0.0016
2022-02-14 2021-12-31 13F NETSCOUT SYS COM 64115T104 416,566 347,643 504.39 13,780 642.06 0.0017
2021-11-15 2021-09-30 13F NETSCOUT SYS COM 64115T104 68,923 -96,406 -58.31 1,857 -60.65 0.0003
2021-08-23 2021-06-30 13F/A-1 NETSCOUT SYS COM 64115T104 165,329 -82,025 -33.16 4,719 -32.25 0.0006
2021-08-16 2021-06-30 13F NETSCOUT SYS COM 64115T104 165,329 -82,025 4,719 0.0001
2021-05-17 2021-03-31 13F NETSCOUT SYS COM 64115T104 247,354 155,503 169.30 6,965 176.61 0.0010
2021-02-16 2020-12-31 13F NETSCOUT SYS COM 64115T104 91,851 79,035 616.69 2,518 799.29 0.0004
2020-11-13 2020-09-30 13F NETSCOUT SYS COM 64115T104 12,816 -18,290 -58.80 280 -64.78 0.0001
2020-08-14 2020-06-30 13F NETSCOUT SYS COM 64115T104 31,106 -26,785 -46.27 795 -41.97 0.0002
2020-05-26 2020-03-31 13F/A-1 NETSCOUT SYS COM 64115T104 57,891 -140,245 -70.78 1,370 -71.28 0.0004
2020-05-15 2020-03-31 13F NETSCOUT SYS COM 64115T104 57,891 -140,245 1,370 105.2446
2020-02-14 2019-12-31 13F NETSCOUT SYS COM 64115T104 198,136 34,736 21.26 4,770 26.56 0.0011
2019-11-14 2019-09-30 13F NETSCOUT SYS COM 64115T104 163,400 121,553 290.47 3,769 254.56 0.0010
2019-08-14 2019-06-30 13F NETSCOUT SYS COM 64115T104 41,847 -56,560 -57.48 1,063 -61.51 0.0003
2019-05-15 2019-03-31 13F NETSCOUT SYS COM 64115T104 98,407 -510,433 -83.84 2,762 -80.80 0.0008
2019-02-14 2018-12-31 13F NETSCOUT SYS COM 64115T104 608,840 246,540 68.05 14,387 57.29 0.0043
2019-04-23 2018-09-30 13F/A-2 NETSCOUT SYS COM 64115T104 362,300 3,809 1.06 9,147 -14.09 0.0023
2018-11-20 2018-09-30 13F/A-1 NETSCOUT SYS COM 64115T104 362,300 0 9,147 0.0023
2018-11-14 2018-09-30 13F NETSCOUT SYS COM 64115T104 362,300 3,809 9,147
2019-04-23 2018-06-30 13F/A-1 NETSCOUT SYS COM 64115T104 358,491 -1,120,629 -75.76 10,647 -72.68 0.0029
2018-08-14 2018-06-30 13F NETSCOUT SYS COM 64115T104 358,491 -1,120,629 10,647
2019-04-23 2018-03-31 13F/A-1 NETSCOUT SYS COM 64115T104 1,479,120 73,802 5.25 38,974 -8.92 0.0108
2018-05-14 2018-03-31 13F NETSCOUT SYS COM 64115T104 1,479,120 73,802 38,974
2019-04-23 2017-12-31 13F/A-1 NETSCOUT SYS COM 64115T104 1,405,318 711,934 102.68 42,791 90.77 0.0117
2018-02-14 2017-12-31 13F NETSCOUT SYS COM 64115T104 1,405,318 711,934 42,791
2017-11-14 2017-09-30 13F NETSCOUT SYS COM 64115T104 693,384 289,076 71.50 22,431 61.28 0.0067
2017-08-11 2017-06-30 13F NETSCOUT SYS COM 64115T104 404,308 27,027 7.16 13,908 -2.86 0.0042
2017-05-22 2017-03-31 13F/A-1 NETSCOUT SYS COM 64115T104 377,281 -64,056 -14.51 14,317 2.99 0.0044
2017-05-12 2017-03-31 13F NETSCOUT SYS COM 64115T104 377,281 14,317
2017-02-22 2016-12-31 13F/A-1 NETSCOUT SYS COM 64115T104 441,337 312,487 242.52 13,902 268.75 0.0045
2017-02-13 2016-12-31 13F NETSCOUT SYS COM 64115T104 441,337 13,902
2016-11-10 2016-09-30 13F NETSCOUT SYS COM 64115T104 128,850 -14,907 -10.37 3,770 17.89 0.0013
2016-08-12 2016-06-30 13F NETSCOUT SYS COM 64115T104 143,757 35,520 32.82 3,198 28.64 0.0012
2016-05-12 2016-03-31 13F NETSCOUT SYS COM 64115T104 108,237 -80,912 -42.78 2,486 -57.20 0.0010
2016-02-09 2015-12-31 13F NETSCOUT SYS COM 64115T104 189,149 -77,633 -29.10 5,808 -38.45 0.0021
2016-02-08 2015-09-30 13F/A-1 NETSCOUT SYS COM 64115T104 266,782 135,443 103.12 9,436 95.97 0.0035
2015-11-09 2015-09-30 13F NETSCOUT SYS COM 64115T104 266,782 9,436
2015-08-12 2015-06-30 13F NETSCOUT SYS COM 64115T104 131,339 69,787 113.38 4,815 78.40 0.0017
2015-05-14 2015-03-31 13F NETSCOUT SYS COM 64115T104 61,552 -13,140 -17.59 2,699 -1.10 0.0010
2015-02-13 2014-12-31 13F NETSCOUT SYS COM 64115T104 74,692 34,512 85.89 2,729 48.32 0.0010
2014-12-16 2014-09-30 13F/A-1 NETSCOUT SYS COM 64115T104 40,180 22,858 131.96 1,840 182.64 0.0007
2014-11-14 2014-09-30 13F NETSCOUT SYS COM 64115T104 40,180 1,840
2014-05-13 2014-03-31 13F NETSCOUT SYS COM 64115T104 17,322 -31,980 -64.87 651 -55.35 0.0003
2014-02-13 2013-12-31 13F NETSCOUT SYS COM 64115T104 49,302 12,538 34.10 1,458 55.44 0.0006
2013-11-13 2013-09-30 13F NETSCOUT SYS INC COM ST COM 64115T104 36,764 -114,777 -75.74 938 -73.48 0.0004
2013-08-08 2013-06-30 13F NETSCOUT SYS INC COM ST COM 64115T104 151,541 151,541 3,537 0.0018
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.