Teradyne, Inc.
MX ˙ BMV ˙ US8807701029
SecurityMX:TER / Teradyne, Inc.
InstitutionAssenagon Asset Management S.A.
Latest Disclosed Ownership1,455,143 shares
Latest Disclosed Value $ 431,391,694
Assenagon Asset Management S.A. reports 59.90% increase in ownership of TER / Teradyne, Inc.

On April 20, 2026 - Assenagon Asset Management S.A. filed a 13F-HR form disclosing ownership of 1,455,143 shares of Teradyne, Inc. (MX:TER) valued at $431,391,694 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 9, 2026 disclosing 910,023 shares of Teradyne, Inc.. This represents a change in shares of 59.90% 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)
2026-04-20 2026-03-31 13F TERADYNE COM 880770102 1,455,143 545,120 59.90 431,392 144.91 0.6549
2026-01-09 2025-12-31 13F TERADYNE COM 880770102 910,023 882,723 3,233.42 176,144 4,588.42 0.2425
2025-10-07 2025-09-30 13F TERADYNE COM 880770102 27,300 -1,089,969 -97.56 3,758 -96.26 0.0051
2025-07-11 2025-06-30 13F TERADYNE COM 880770102 1,117,269 -310,743 -21.76 100,465 -14.83 0.1491
2025-04-15 2025-03-31 13F TERADYNE COM 880770102 1,428,012 504,944 54.70 117,954 1.48 0.1968
2025-01-14 2024-12-31 13F TERADYNE COM 880770102 923,068 873,626 1,766.97 116,233 1,655.51 0.1875
2024-10-23 2024-09-30 13F TERADYNE COM 880770102 49,442 -121,125 -71.01 6,622 -73.82 0.0122
2024-07-18 2024-06-30 13F TERADYNE COM 880770102 170,567 -5,832 -3.31 25,293 27.08 0.0563
2024-04-24 2024-03-31 13F TERADYNE COM 880770102 176,399 -298,577 -62.86 19,903 -61.39 0.0471
2024-01-17 2023-12-31 13F TERADYNE COM 880770102 474,976 31,632 7.13 51,544 15.73 0.1368
2023-11-06 2023-09-30 13F TERADYNE COM 880770102 443,344 249,529 128.75 44,538 106.41 0.1379
2023-07-25 2023-06-30 13F TERADYNE COM 880770102 193,815 56,951 41.61 21,577 46.64 0.0746
2023-04-18 2023-03-31 13F TERADYNE COM 880770102 136,864 136,864 14,714 0.0522
2023-01-12 2022-12-31 13F TERADYNE COM 880770102 0 -107,739 -100.00 0 -100.00
2022-10-27 2022-09-30 13F TERADYNE COM 880770102 107,739 -79,684 -42.52 8,097 -51.76 0.0311
2022-07-27 2022-06-30 13F TERADYNE COM 880770102 187,423 187,423 16,784 0.0622
2022-02-01 2021-12-31 13F TERADYNE COM 880770102 0 -562,591 -100.00 0 -100.00
2021-10-19 2021-09-30 13F TERADYNE COM 880770102 562,591 523,183 1,327.61 61,418 1,063.44 0.1964
2021-07-15 2021-06-30 13F TERADYNE COM 880770102 39,408 39,408 5,279 0.0179
2021-04-26 2021-03-31 13F TERADYNE COM 880770102 0 -56,880 -100.00 0 -100.00
2021-02-01 2020-12-31 13F TERADYNE COM 880770102 56,880 47,469 504.40 6,819 811.63 0.0297
2020-10-07 2020-09-30 13F TERADYNE COM 880770102 9,411 9,411 -83.45 748 -89.03 0.0042
2020-07-21 2020-06-30 13F TERADYNE COM 880770102 0 -20,376 -100.00 0 -100.00
2020-04-17 2020-03-31 13F TERADYNE COM 880770102 20,376 -455,021 -95.71 1,104 -96.59 0.0088
2020-01-17 2019-12-31 13F TERADYNE COM 880770102 475,397 475,397 2,233.12 32,417 2,836.32 0.2039
2019-10-16 2019-09-30 13F TERADYNE COM 880770102 0 -270,401 -100.00 0 -100.00
2019-08-12 2019-06-30 13F TERADYNE COM 880770102 270,401 123,217 83.72 12,955 120.92 0.0973
2019-04-26 2019-03-31 13F TERADYNE COM 880770102 147,184 147,184 -45.57 5,864 -54.74 0.0550
2019-01-23 2018-12-31 13F TERADYNE COM 880770102 0 -63,149 -100.00 0 -100.00
2018-10-29 2018-09-30 13F TERADYNE COM 880770102 63,149 63,149 2,335 0.0230
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.