Teradyne, Inc.
MX ˙ BMV ˙ US8807701029
SecurityMX:TER / Teradyne, Inc.
InstitutionWinslow Asset Management Inc
Latest Disclosed Ownership132,901 shares
Latest Disclosed Value $ 39,400
Winslow Asset Management Inc reports 5.88% decrease in ownership of TER / Teradyne, Inc.

On May 5, 2026 - Winslow Asset Management Inc filed a 13F-HR form disclosing ownership of 132,901 shares of Teradyne, Inc. (MX:TER) valued at $39,400 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 141,208 shares of Teradyne, Inc.. This represents a change in shares of -5.88% 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)
2026-05-05 2026-03-31 13F TERADYNE INC COM COM 880770102 132,901 -8,307 -5.88 39 44.44 7.6550
2026-02-02 2025-12-31 13F TERADYNE INC COM COM 880770102 141,208 -1,937 -1.35 27 42.11 5.0412
2025-11-06 2025-09-30 13F TERADYNE INC COM COM 880770102 143,145 -1,712 -1.18 20 46.15 3.6969
2025-08-13 2025-06-30 13F TERADYNE INC COM COM 880770102 144,857 1,431 1.00 13 18.18 2.6277
2025-05-02 2025-03-31 13F TERADYNE INC COM COM 880770102 143,426 -3,525 -2.40 12 -38.89 2.6135
2025-02-06 2024-12-31 13F TERADYNE INC COM COM 880770102 146,951 -4,090 -2.71 19 -10.00 3.6876
2024-11-04 2024-09-30 13F TERADYNE INC COM COM 880770102 151,041 -478 -0.32 20 -9.09 3.7404
2024-08-09 2024-06-30 13F TERADYNE INC COM COM 880770102 151,519 -7,516 -4.73 22 29.41 4.4258
2024-05-02 2024-03-31 13F TERADYNE INC COM COM 880770102 159,035 161 0.10 18 0.00 3.3790
2024-02-16 2023-12-31 13F TERADYNE INC COM COM 880770102 158,874 2,524 1.61 17 13.33 3.5064
2023-11-07 2023-09-30 13F TERADYNE INC COM COM 880770102 156,350 -2,527 -1.59 16 -11.76 3.6387
2023-08-09 2023-06-30 13F TERADYNE INC COM COM 880770102 158,877 -2,393 -1.48 18 0.00 3.8097
2023-05-03 2023-03-31 13F TERADYNE INC COM COM 880770102 161,270 -2,809 -1.71 17 21.43 4.0470
2023-01-23 2022-12-31 13F TERADYNE INC COM COM 880770102 164,079 -6,098 -3.58 14 -99.89 3.3913
2022-11-08 2022-09-30 13F TERADYNE INC COM COM 880770102 170,177 -781 -0.46 12,789 -16.46 3.3305
2022-08-03 2022-06-30 13F TERADYNE INC COM COM 880770102 170,958 849 0.50 15,309 -23.88 3.6960
2022-05-09 2022-03-31 13F TERADYNE INC COM COM 880770102 170,109 -3,110 -1.80 20,112 -29.00 3.9724
2022-02-07 2021-12-31 13F TERADYNE INC COM COM 880770102 173,219 52 0.03 28,326 49.83 5.0017
2021-11-12 2021-09-30 13F TERADYNE INC COM COM 880770102 173,167 -3,091 -1.75 18,905 -19.93 3.6507
2021-08-10 2021-06-30 13F TERADYNE INC COM COM 880770102 176,258 -7,875 -4.28 23,612 5.39 4.4037
2021-05-10 2021-03-31 13F TERADYNE INC COM COM 880770102 184,133 -13,715 -6.93 22,405 -5.54 4.5391
2021-02-01 2020-12-31 13F TERADYNE INC COM COM 880770102 197,848 -2,856 -1.42 23,720 48.73 5.0049
2020-11-10 2020-09-30 13F TERADYNE INC COM COM 880770102 200,704 -6,953 -3.35 15,948 -9.12 4.0701
2020-08-11 2020-06-30 13F TERADYNE INC COM COM 880770102 207,657 -8,130 -3.77 17,549 50.13 4.7322
2020-05-12 2020-03-31 13F TERADYNE INC COM COM 880770102 215,787 -15,178 -6.57 11,689 -25.78 3.8416
2020-02-10 2019-12-31 13F TERADYNE INC COM COM 880770102 230,965 -427 -0.18 15,749 17.53 3.5938
2019-11-12 2019-09-30 13F TERADYNE INC COM COM 880770102 231,392 -41,345 -15.16 13,400 2.55 3.3458
2019-07-29 2019-06-30 13F TERADYNE INC COM COM 880770102 272,737 -26,499 -8.86 13,067 9.60 2.9023
2019-05-10 2019-03-31 13F TERADYNE INC COM COM 880770102 299,236 -5,214 -1.71 11,922 24.79 2.5033
2019-02-13 2018-12-31 13F TERADYNE INC COM COM 880770102 304,450 -2,303 -0.75 9,554 -15.78 2.2260
2018-10-18 2018-09-30 13F TERADYNE INC COM COM 880770102 306,753 -176 -0.06 11,344 -2.92 2.0649
2018-07-13 2018-06-30 13F TERADYNE INC COM COM 880770102 306,929 -4,262 -1.37 11,685 -17.86 2.1671
2018-04-26 2018-03-31 13F TERADYNE INC COM COM 880770102 311,191 -11,690 -3.62 14,225 5.22 2.7338
2018-01-11 2017-12-31 13F TERADYNE INC COM COM 880770102 322,881 -5,623 -1.71 13,519 10.36 2.4882
2017-10-13 2017-09-30 13F TERADYNE INC COM COM 880770102 328,504 -5,269 -1.58 12,250 22.22 2.3724
2017-08-04 2017-06-30 13F TERADYNE INC COM COM 880770102 333,773 -165,317 -33.12 10,023 -35.43 2.0367
2017-04-12 2017-03-31 13F TERADYNE INC COM COM 880770102 499,090 -13,323 -2.60 15,522 19.26 3.1785
2017-02-07 2016-12-31 13F TERADYNE INC COM COM 880770102 512,413 -610 -0.12 13,015 17.56 2.7310
2016-11-08 2016-09-30 13F TERADYNE INC COM COM 880770102 513,023 -7,178 -1.38 11,071 8.08 2.4410
2016-08-09 2016-06-30 13F TERADYNE INC COM COM 880770102 520,201 -18,276 -3.39 10,243 -11.90 2.2939
2016-05-10 2016-03-31 13F TERADYNE INC COM COM 880770102 538,477 -88,445 -14.11 11,626 -10.28 2.5996
2016-02-08 2015-12-31 13F TERADYNE INC COM COM 880770102 626,922 -8,017 -1.26 12,958 13.32 2.5616
2015-11-12 2015-09-30 13F TERADYNE INC COM COM 880770102 634,939 -2,120 -0.33 11,435 -6.95 2.2645
2015-08-07 2015-06-30 13F TERADYNE INC COM COM 880770102 637,059 -5,565 -0.87 12,289 1.45 2.1190
2015-05-07 2015-03-31 13F TERADYNE INC COM COM 880770102 642,624 -18,278 -2.77 12,113 -7.39 2.0384
2015-02-09 2014-12-31 13F TERADYNE INC COM COM 880770102 660,902 1,950 0.30 13,079 2.36 2.1430
2014-11-03 2014-09-30 13F TERADYNE INC COM COM 880770102 658,952 6,535 1.00 12,777 -0.08 2.2660
2014-07-31 2014-06-30 13F TERADYNE INC COM COM 880770102 652,417 -425 -0.07 12,787 -1.52 2.1157
2014-05-07 2014-03-31 13F TERADYNE INC COM COM 880770102 652,842 -11,397 -1.72 12,985 10.94 2.2561
2014-02-06 2013-12-31 13F TERADYNE INC COM COM 880770102 664,239 -11,495 -1.70 11,704 4.85 2.0963
2013-10-24 2013-09-30 13F TERADYNE INC COM COM 880770102 675,734 -610 -0.09 11,163 -6.06 2.1205
2013-08-06 2013-06-30 13F TERADYNE INC COM COM 880770102 676,344 676,344 11,883 2.3565
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.