Teradyne, Inc.
MX ˙ BMV ˙ US8807701029
SecurityMX:TER / Teradyne, Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership2,172,070 shares
Latest Disclosed Value $ 643,932,949
Morgan Stanley reports 11.05% decrease in ownership of TER / Teradyne, Inc.

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 2,172,070 shares of Teradyne, Inc. (MX:TER) valued at $643,932,949 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 2,442,014 shares of Teradyne, Inc.. This represents a change in shares of -11.05% during the quarter.

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 TERADYNE COM 880770102 2,172,070 -269,944 -11.05 643,933 36.23 0.0388
2026-05-27 2025-12-31 13F/A-1 TERADYNE COM 880770102 2,442,014 45,089 1.88 472,677 43.27 0.0282
2026-02-13 2025-12-31 13F TERADYNE COM 880770102 2,442,014 45,089 472,677 0.0282
2026-05-27 2025-09-30 13F/A-1 TERADYNE COM 880770102 2,396,925 -1,424,865 -37.28 329,913 -4.00 0.0200
2025-11-14 2025-09-30 13F TERADYNE COM 880770102 2,396,925 -1,424,865 329,913 0.0200
2025-08-15 2025-06-30 13F TERADYNE COM 880770102 3,821,790 1,593,805 71.54 343,656 86.74 0.0224
2025-05-15 2025-03-31 13F TERADYNE COM 880770102 2,227,985 -896 -0.04 184,032 -34.43 0.0132
2025-05-15 2024-12-31 13F/A-1 TERADYNE COM 880770102 2,228,881 -74,926 -3.25 280,661 -9.04 0.0197
2025-02-14 2024-12-31 13F TERADYNE COM 880770102 2,228,881 -74,926 280,661 0.0197
2025-05-14 2024-09-30 13F/A-2 TERADYNE COM 880770102 2,303,807 617,291 36.60 308,549 23.37 0.0224
2025-02-14 2024-09-30 13F/A-1 TERADYNE COM 880770102 2,303,807 617,291 308,549 0.0224
2024-11-14 2024-09-30 13F TERADYNE COM 880770102 2,303,807 617,291 308,549 0.0027
2025-05-14 2024-06-30 13F/A-2 TERADYNE COM 880770102 1,686,516 96,130 6.04 250,094 39.37 0.0194
2024-10-17 2024-06-30 13F/A-1 TERADYNE COM 880770102 1,686,516 96,130 250,094 0.0193
2024-08-14 2024-06-30 13F TERADYNE COM 880770102 1,686,516 96,130 250,094 0.0194
2024-10-17 2024-03-31 13F/A-2 TERADYNE COM 880770102 1,590,386 -76,994 -4.62 179,443 -0.83 0.0144
2024-08-16 2024-03-31 13F/A-1 TERADYNE COM 880770102 1,590,386 -76,994 179,443 0.0017
2024-05-15 2024-03-31 13F TERADYNE COM 880770102 1,590,386 -76,994 179,443 0.0144
2024-08-16 2023-12-31 13F/A-1 TERADYNE COM 880770102 1,667,380 -13,810 -0.82 180,944 7.14 0.0159
2024-02-13 2023-12-31 13F TERADYNE COM 880770102 1,667,380 -13,810 180,944 0.0159
2023-11-15 2023-09-30 13F TERADYNE COM 880770102 1,681,190 52,550 3.23 168,892 -6.85 0.0172
2023-08-14 2023-06-30 13F TERADYNE COM 880770102 1,628,640 230,352 16.47 181,317 20.61 0.0179
2023-05-15 2023-03-31 13F TERADYNE COM 880770102 1,398,288 -40,553 -2.82 150,330 19.61 0.0161
2023-02-14 2022-12-31 13F TERADYNE COM 880770102 1,438,841 180,033 14.30 125,683 32.86 0.0143
2022-11-14 2022-09-30 13F TERADYNE COM 880770102 1,258,808 -198,464 -13.62 94,599 -27.51 0.0129
2022-10-27 2022-06-30 13F/A-1 TERADYNE COM 880770102 1,457,272 623,763 74.84 130,499 32.43 0.0169
2022-08-15 2022-06-30 13F TERADYNE COM 880770102 1,457,272 623,763 130,499 0.0034
2022-10-27 2022-03-31 13F/A-1 TERADYNE COM 880770102 833,509 -586,239 -41.29 98,545 -57.56 0.0133
2022-05-13 2022-03-31 13F TERADYNE COM 880770102 833,509 -586,239 98,545 0.0133
2022-02-14 2021-12-31 13F TERADYNE COM 880770102 1,419,748 680,927 92.16 232,172 187.85 0.0287
2021-11-15 2021-09-30 13F TERADYNE COM 880770102 738,821 88,649 13.63 80,658 -7.39 0.0109
2021-08-23 2021-06-30 13F/A-1 TERADYNE COM 880770102 650,172 77,756 13.58 87,095 25.05 0.0115
2021-08-16 2021-06-30 13F TERADYNE COM 880770102 650,172 77,756 87,095 0.0024
2021-05-17 2021-03-31 13F TERADYNE COM 880770102 572,416 -1,157,194 -66.90 69,650 -66.41 0.0102
2021-02-16 2020-12-31 13F TERADYNE COM 880770102 1,729,610 775,186 81.22 207,363 173.43 0.0320
2020-11-13 2020-09-30 13F TERADYNE COM 880770102 954,424 47,797 5.27 75,837 -1.02 0.0147
2020-08-14 2020-06-30 13F TERADYNE COM 880770102 906,627 580,109 177.67 76,620 333.22 0.0170
2020-05-26 2020-03-31 13F/A-1 TERADYNE COM 880770102 326,518 -267,782 -45.06 17,686 -56.36 0.0048
2020-05-15 2020-03-31 13F TERADYNE COM 880770102 326,518 -267,782 17,686 1,358.6535
2020-02-14 2019-12-31 13F TERADYNE COM 880770102 594,300 -76,793 -11.44 40,525 4.28 0.0094
2019-11-14 2019-09-30 13F TERADYNE COM 880770102 671,093 312,042 86.91 38,863 125.91 0.0103
2019-08-14 2019-06-30 13F TERADYNE COM 880770102 359,051 -820,566 -69.56 17,203 -63.39 0.0046
2019-05-15 2019-03-31 13F TERADYNE COM 880770102 1,179,617 225,470 23.63 46,996 56.96 0.0133
2019-02-14 2018-12-31 13F TERADYNE COM 880770102 954,147 182,669 23.68 29,941 4.95 0.0090
2019-04-23 2018-09-30 13F/A-2 TERADYNE COM 880770102 771,478 371,728 92.99 28,529 87.46 0.0071
2018-11-20 2018-09-30 13F/A-1 TERADYNE COM 880770102 771,478 0 28,529 0.0071
2018-11-14 2018-09-30 13F TERADYNE COM 880770102 771,478 371,728 28,529
2019-04-23 2018-06-30 13F/A-1 TERADYNE COM 880770102 399,750 -143,101 -26.36 15,219 -38.67 0.0041
2018-08-14 2018-06-30 13F TERADYNE COM 880770102 399,750 -143,101 15,219
2019-04-23 2018-03-31 13F/A-1 TERADYNE COM 880770102 542,851 -153,883 -22.09 24,813 -14.94 0.0069
2018-05-14 2018-03-31 13F TERADYNE COM 880770102 542,851 -153,883 24,813
2019-04-23 2017-12-31 13F/A-1 TERADYNE COM 880770102 696,734 -612,797 -46.80 29,172 -40.26 0.0080
2018-02-14 2017-12-31 13F TERADYNE COM 880770102 696,734 -612,797 29,172
2017-11-14 2017-09-30 13F TERADYNE COM 880770102 1,309,531 -344,167 -20.81 48,832 -1.67 0.0146
2017-08-11 2017-06-30 13F TERADYNE COM 880770102 1,653,698 578,632 53.82 49,661 48.53 0.0150
2017-05-22 2017-03-31 13F/A-1 TERADYNE COM 880770102 1,075,066 307,326 40.03 33,435 71.45 0.0103
2017-05-12 2017-03-31 13F TERADYNE COM 880770102 1,075,066 33,435
2017-02-22 2016-12-31 13F/A-1 TERADYNE COM 880770102 767,740 130,973 20.57 19,501 41.91 0.0064
2017-02-13 2016-12-31 13F TERADYNE COM 880770102 767,740 19,501
2016-11-10 2016-09-30 13F TERADYNE COM 880770102 636,767 -734,855 -53.58 13,742 -49.12 0.0047
2016-08-12 2016-06-30 13F TERADYNE COM 880770102 1,371,622 187,248 15.81 27,007 5.62 0.0098
2016-05-12 2016-03-31 13F TERADYNE COM 880770102 1,184,374 -126,567 -9.65 25,571 -5.63 0.0098
2016-02-09 2015-12-31 13F TERADYNE COM 880770102 1,310,941 -587,213 -30.94 27,096 -20.74 0.0098
2016-02-08 2015-09-30 13F/A-1 TERADYNE COM 880770102 1,898,154 503,622 36.11 34,186 27.09 0.0126
2015-11-09 2015-09-30 13F TERADYNE COM 880770102 1,898,154 34,186
2015-08-12 2015-06-30 13F TERADYNE COM 880770102 1,394,532 1,008,976 261.69 26,900 270.06 0.0093
2015-05-14 2015-03-31 13F TERADYNE COM 880770102 385,556 189,304 96.46 7,269 87.15 0.0027
2015-02-13 2014-12-31 13F TERADYNE COM 880770102 196,252 -84,017 -29.98 3,884 -28.52 0.0014
2014-12-16 2014-09-30 13F/A-1 TERADYNE COM 880770102 280,269 68,274 32.21 5,434 28.86 0.0021
2014-11-14 2014-09-30 13F TERADYNE COM 880770102 280,269 5,434
2014-05-13 2014-03-31 13F TERADYNE COM 880770102 211,995 -142,634 -40.22 4,217 -32.48 0.0018
2014-02-13 2013-12-31 13F TERADYNE COM 880770102 354,629 353 0.10 6,246 6.73 0.0027
2013-11-13 2013-09-30 13F TERADYNE INC COM ST COM 880770102 354,276 165,775 87.94 5,852 76.74 0.0028
2013-08-08 2013-06-30 13F TERADYNE INC COM ST COM 880770102 188,501 188,501 3,311 0.0017
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.