Teradyne, Inc.
US ˙ NasdaqGS ˙ US8807701029

SecurityTER / Teradyne, Inc.
InstitutionCwm, Llc
Latest Disclosed Ownership64,232 shares
Latest Disclosed Value $ 19,042,307
Cwm, Llc reports 77.19% increase in ownership of TER / Teradyne, Inc.

On May 14, 2026 - Cwm, Llc filed a 13F-HR form disclosing ownership of 64,232 shares of Teradyne, Inc. (US:TER) valued at $19,042,219 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 36,250 shares of Teradyne, Inc.. This represents a change in shares of 77.19% during the quarter. The current value of the position is $26,313,923 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)
2026-05-14 2026-03-31 13F TERADYNE COM 880770102 64,232 27,982 77.19 19,042 271,928.57 0.0495
2026-01-26 2025-12-31 13F TERADYNE COM 880770102 36,250 19,624 118.03 7 250.00 0.0190
2025-10-15 2025-09-30 13F TERADYNE COM 880770102 16,626 -1,575 -8.65 2 100.00 0.0069
2025-07-25 2025-06-30 13F TERADYNE COM 880770102 18,201 -19,250 -51.40 2 -66.67 0.0058
2025-05-01 2025-03-31 13F TERADYNE COM 880770102 37,451 33,940 966.68 3 0.0123
2025-02-04 2024-12-31 13F TERADYNE COM 880770102 3,511 -1,337 -27.58 0 0.0018
2024-10-08 2024-09-30 13F TERADYNE COM 880770102 4,848 1,227 33.89 1 0.0028
2024-07-10 2024-06-30 13F TERADYNE COM 880770102 3,621 595 19.66 1 0.0025
2024-04-05 2024-03-31 13F TERADYNE COM 880770102 3,026 373 14.06 0 0.0017
2024-02-01 2023-12-31 13F TERADYNE COM 880770102 2,653 -398 -13.04 0 0.0015
2023-10-11 2023-09-30 13F TERADYNE COM 880770102 3,051 499 19.55 0 0.0019
2023-08-03 2023-06-30 13F TERADYNE COM 880770102 2,552 454 21.64 0 0.0018
2023-05-01 2023-03-31 13F TERADYNE COM 880770102 2,098 158 8.14 0 0.0015
2023-02-01 2022-12-31 13F TERADYNE COM 880770102 1,940 203 11.69 0 -100.00 0.0012
2022-10-27 2022-09-30 13F TERADYNE COM 880770102 1,737 45 2.66 131 -13.82 0.0010
2022-07-28 2022-06-30 13F TERADYNE COM 880770102 1,692 186 12.35 152 -14.61 0.0012
2022-04-21 2022-03-31 13F TERADYNE COM 880770102 1,506 596 65.49 178 19.46 0.0013
2022-01-31 2021-12-31 13F TERADYNE COM 880770102 910 426 88.02 149 129.23 0.0010
2021-09-15 2021-06-30 13F/A-1 TERADYNE COM 880770102 484 0 0.00 65 0.00 0.0005
2021-07-29 2021-06-30 13F TERADYNE COM 880770102 484 0 65 0.0005
2021-09-15 2021-03-31 13F/A-1 TERADYNE COM 880770102 484 0 0.00 65 0.00 0.0005
2021-04-27 2021-03-31 13F TERADYNE COM 880770102 531 47 65 0.0006
2021-09-15 2020-12-31 13F/A-1 TERADYNE COM 880770102 484 0 0.00 65 0.00 0.0005
2021-01-27 2020-12-31 13F TERADYNE COM 880770102 583 99 70 0.0007
2021-09-15 2020-09-30 13F/A-1 TERADYNE COM 880770102 484 0 0.00 65 0.00 0.0005
2020-10-19 2020-09-30 13F TERADYNE COM 880770102 569 85 45 0.0005
2021-09-15 2020-06-30 13F/A-1 TERADYNE COM 880770102 484 0 0.00 65 0.00 0.0005
2020-07-22 2020-06-30 13F TERADYNE COM 880770102 571 87 48 0.0006
2021-09-15 2020-03-31 13F/A-1 TERADYNE COM 880770102 484 0 0.00 65 0.00 0.0005
2020-04-28 2020-03-31 13F TERADYNE COM 880770102 571 87 31 0.0005
2021-09-14 2019-12-31 13F/A-1 TERADYNE COM 880770102 484 0 0.00 65 0.00 0.0005
2020-01-27 2019-12-31 13F TERADYNE COM 880770102 171 -313 12 0.0002
2021-09-14 2019-09-30 13F/A-1 TERADYNE COM 880770102 484 0 0.00 65 0.00 0.0005
2019-10-22 2019-09-30 13F TERADYNE COM 880770102 168 -316 10 0.0001
2021-09-14 2019-06-30 13F/A-1 TERADYNE COM 880770102 484 0 0.00 65 0.00 0.0005
2019-07-31 2019-06-30 13F TERADYNE COM 880770102 8 -476 0
2021-09-02 2019-03-31 13F/A-1 TERADYNE COM 880770102 484 426 734.48 65 3,150.00 0.0005
2019-04-22 2019-03-31 13F TERADYNE COM 880770102 8 -50 0
2019-01-25 2018-12-31 13F TERADYNE COM 880770102 58 12 26.09 2 0.00 0.0000
2018-10-29 2018-09-30 13F TERADYNE COM 880770102 46 -14 -23.33 2 0.00 0.0001
2018-07-31 2018-06-30 13F TERADYNE COM 880770102 60 52 650.00 2 0.0001
2018-04-26 2018-03-31 13F TERADYNE COM 880770102 8 0 0.00 0 0.0000
2018-01-16 2017-12-31 13F TERADYNE COM 880770102 8 0 0.00 0 0.0000
2017-10-16 2017-09-30 13F TERADYNE COM 880770102 8 -17 -68.00 0 -100.00
2017-07-17 2017-06-30 13F TERADYNE COM 880770102 25 0 0.00 1 0.00 0.0001
2017-04-17 2017-03-31 13F TERADYNE COM 880770102 25 -374 -93.73 1 -90.00 0.0001
2017-01-19 2016-12-31 13F TERADYNE COM 880770102 399 382 2,247.06 10 0.0006
2016-10-17 2016-09-30 13F TERADYNE COM 880770102 17 0 0.00 0 0.0000
2016-07-21 2016-06-30 13F TERADYNE COM 880770102 17 17 0 0.0000
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.