Teradyne, Inc.
MX ˙ BMV ˙ US8807701029
SecurityMX:TER / Teradyne, Inc.
InstitutionMarshall Wace, Llp
Latest Disclosed Ownership131,000 shares
Latest Disclosed Value $ 38,836,260
Marshall Wace, Llp reports 1,670.27% increase in ownership of TER / Teradyne, Inc.

On May 14, 2026 - Marshall Wace, Llp filed a 13F-HR form disclosing ownership of 131,000 shares of Teradyne, Inc. (MX:TER) valued at $38,836,260 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 7,400 shares of Teradyne, Inc.. This represents a change in shares of 1,670.27% 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)
2026-05-14 2026-03-31 13F TERADYNE COMMON STOCK 880770102 131,000 123,600 1,670.27 38,836 2,612.01 0.0183
2026-02-13 2025-12-31 13F TERADYNE COMMON STOCK 880770102 7,400 7,400 1,432 0.0013
2025-05-15 2025-03-31 13F TERADYNE COMMON STOCK 880770102 0 -276,238 -100.00 0 -100.00
2025-02-13 2024-12-31 13F TERADYNE COMMON STOCK 880770102 276,238 234,222 557.46 34,784 518.14 0.0418
2024-11-14 2024-09-30 13F TERADYNE COMMON STOCK 880770102 42,016 3,391 8.78 5,627 -1.75 0.0069
2024-08-14 2024-06-30 13F TERADYNE COMMON STOCK 880770102 38,625 -206,219 -84.22 5,728 -79.27 0.0076
2024-05-15 2024-03-31 13F TERADYNE COMMON STOCK 880770102 244,844 -78,202 -24.21 27,626 -21.20 0.0421
2024-02-14 2023-12-31 13F TERADYNE COMMON STOCK 880770102 323,046 -37,339 -10.36 35,057 -3.17 0.0594
2023-11-14 2023-09-30 13F TERADYNE COMMON STOCK 880770102 360,385 202,823 128.73 36,204 106.40 0.0733
2023-08-14 2023-06-30 13F TERADYNE COMMON STOCK 880770102 157,562 -50,490 -24.27 17,541 -21.58 0.0343
2023-05-15 2023-03-31 13F TERADYNE COMMON STOCK 880770102 208,052 171,997 477.04 22,368 610.29 0.0475
2023-02-14 2022-12-31 13F TERADYNE COMMON STOCK 880770102 36,055 28,955 407.82 3,149 490.81 0.0071
2022-11-14 2022-09-30 13F TERADYNE COMMON STOCK 880770102 7,100 7,100 533 0.0012
2022-08-15 2022-06-30 13F TERADYNE COMMON STOCK 880770102 0 -484,671 -100.00 0 -100.00
2022-05-16 2022-03-31 13F TERADYNE COMMON STOCK 880770102 484,671 -105,470 -17.87 57,305 -40.62 0.1085
2022-02-14 2021-12-31 13F TERADYNE COMMON STOCK 880770102 590,141 285,885 93.96 96,505 190.54 0.1782
2021-11-15 2021-09-30 13F TERADYNE COMMON STOCK 880770102 304,256 249,160 452.23 33,216 350.02 0.1379
2021-08-13 2021-06-30 13F TERADYNE COMMON STOCK 880770102 55,096 18,865 52.07 7,381 67.45 0.0360
2021-05-17 2021-03-31 13F TERADYNE COMMON STOCK 880770102 36,231 -25,387 -41.20 4,408 -40.33 0.0202
2021-02-16 2020-12-31 13F TERADYNE COMMON STOCK 880770102 61,618 51,311 497.83 7,387 801.95 0.0400
2020-11-16 2020-09-30 13F TERADYNE COMMON STOCK 880770102 10,307 10,307 -83.27 819 -88.91 0.0052
2020-02-14 2019-12-31 13F TERADYNE COMMON STOCK 880770102 0 -27,049 -100.00 0 -100.00
2019-11-14 2019-09-30 13F TERADYNE COMMON STOCK 880770102 27,049 27,049 1,566 0.0123
2019-02-14 2018-12-31 13F TERADYNE COMMON STOCK 880770102 0 -172,036 -100.00 0 -100.00
2018-12-06 2018-09-30 13F/A-1 TERADYNE COMMON STOCK 880770102 172,036 172,036 6,362 0.0541
2018-11-14 2018-09-30 13F TERADYNE COMMON STOCK 880770102 172,036 172,036 6,362
2015-02-17 2014-12-31 13F TERADYNE COMMON STOCK 880770102 0 -11,774 -100.00 0 -100.00
2014-11-13 2014-09-30 13F TERADYNE COMMON STOCK 880770102 11,774 11,774 228 0.0033
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.