Teradyne, Inc.
US ˙ NasdaqGS ˙ US8807701029

SecurityTER / Teradyne, Inc.
InstitutionShell Asset Management Co
Latest Disclosed Ownership8,717 shares
Latest Disclosed Value $ 1,200
Shell Asset Management Co reports 39.90% decrease in ownership of TER / Teradyne, Inc.

On November 7, 2025 - Shell Asset Management Co filed a 13F-HR form disclosing ownership of 8,717 shares of Teradyne, Inc. (US:TER) valued at $1,199,808 USD as of September 30, 2025. The entity filed a previous 13F-HR on July 23, 2025 disclosing 14,504 shares of Teradyne, Inc.. This represents a change in shares of -39.90% during the quarter. The current value of the position is $3,571,093 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)
2025-11-07 2025-09-30 13F TERADYNE COM 880770102 8,717 -5,787 -39.90 1 0.00 0.1205
2025-07-23 2025-06-30 13F TERADYNE COM 880770102 14,504 6,717 86.26 1 0.0450
2025-05-14 2025-03-31 13F TERADYNE COM 880770102 7,787 -76 -0.97 1 0.0305
2025-02-14 2024-12-31 13F TERADYNE COM 880770102 7,863 -157 -1.96 1 -100.00 0.0433
2024-11-07 2024-09-30 13F TERADYNE COM 880770102 8,020 -106 -1.30 1 0.00 0.0473
2024-07-25 2024-03-31 13F TERADYNE COM 880770102 8,126 -5,436 -40.08 1 0.00 0.0549
2024-02-14 2023-12-31 13F TERADYNE COM 880770102 13,562 10,760 384.01 1 0.0680
2023-11-08 2023-09-30 13F TERADYNE COM 880770102 2,802 -44 -1.55 0 0.0116
2023-07-28 2023-06-30 13F TERADYNE COM 880770102 2,846 -1,063 -27.19 0 0.0125
2023-05-15 2023-03-31 13F TERADYNE COM 880770102 3,909 -14 -0.36 0 0.0174
2023-02-07 2022-12-31 13F TERADYNE COM 880770102 3,923 -832 -17.50 0 -100.00 0.0150
2022-11-14 2022-09-30 13F TERADYNE COM 880770102 4,755 -1,241 -20.70 357 -33.52 0.0139
2022-08-09 2022-06-30 13F TERADYNE COM 880770102 5,996 612 11.37 537 -15.70 0.0159
2022-05-04 2022-03-31 13F TERADYNE COM 880770102 5,384 -798 -12.91 637 -36.99 0.0150
2022-02-09 2021-12-31 13F TERADYNE COM 880770102 6,182 24 0.39 1,011 50.45 0.0207
2021-11-04 2021-09-30 13F TERADYNE COM 880770102 6,158 -2,570 -29.45 672 -42.51 0.0151
2021-08-12 2021-06-30 13F TERADYNE COM 880770102 8,728 -6,413 -42.36 1,169 -36.54 0.0227
2021-05-10 2021-03-31 13F TERADYNE COM 880770102 15,141 -80 -0.53 1,842 0.93 0.0369
2021-02-16 2020-12-31 13F TERADYNE COM 880770102 15,221 -3,464 -18.54 1,825 22.90 0.0377
2020-11-13 2020-09-30 13F TERADYNE COM 880770102 18,685 0 0.00 1,485 -5.95 0.0345
2020-08-10 2020-06-30 13F TERADYNE COM 880770102 18,685 -5,354 -22.27 1,579 21.27 0.0394
2020-05-11 2020-03-31 13F TERADYNE COM 880770102 24,039 -1,283 -5.07 1,302 -24.61 0.0363
2020-02-13 2019-12-31 13F TERADYNE COM 880770102 25,322 -2,780 -9.89 1,727 6.15 0.0372
2019-11-12 2019-09-30 13F TERADYNE COM 880770102 28,102 -242 -0.85 1,627 19.81 0.0372
2019-08-12 2019-06-30 13F TERADYNE COM 880770102 28,344 -645 -2.22 1,358 17.58 0.0300
2019-05-09 2019-03-31 13F TERADYNE COM 880770102 28,989 0 0.00 1,155 26.92 0.0255
2019-02-13 2018-12-31 13F TERADYNE COM 880770102 28,989 -2,400 -7.65 910 -21.62 0.0227
2018-11-13 2018-09-30 13F TERADYNE COM 880770102 31,389 0 0.00 1,161 -2.85 0.0229
2018-08-10 2018-06-30 13F TERADYNE COM 880770102 31,389 -1,676 -5.07 1,195 -20.91 0.0245
2018-05-14 2018-03-31 13F TERADYNE COM 880770102 33,065 0 0.00 1,511 9.18 0.0301
2018-02-09 2017-12-31 13F TERADYNE COM 880770102 33,065 0 0.00 1,384 12.25 0.0275
2017-10-20 2017-09-30 13F/A-1 TERADYNE COM 880770102 33,065 33,065 1,233 0.0274
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.