Teradyne, Inc.
MX ˙ BMV ˙ US8807701029
SecurityMX:TER / Teradyne, Inc.
InstitutionWestpac Banking Corp
Latest Disclosed Ownership3,412 shares
Latest Disclosed Value $ 1,011,522
Westpac Banking Corp reports 64.64% decrease in ownership of TER / Teradyne, Inc.

On May 11, 2026 - Westpac Banking Corp filed a 13F-HR form disclosing ownership of 3,412 shares of Teradyne, Inc. (MX:TER) valued at $1,011,522 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 9,650 shares of Teradyne, Inc.. This represents a change in shares of -64.64% 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)
2026-05-11 2026-03-31 13F TERADYNE COM 880770102 3,412 -6,238 -64.64 1,012 -45.85 0.0352
2026-02-10 2025-12-31 13F TERADYNE COM 880770102 9,650 9,650 1,868 0.1180
2025-08-11 2025-06-30 13F TERADYNE COM 880770102 0 -1,577 -100.00 0 -100.00
2025-05-13 2025-03-31 13F TERADYNE COM 880770102 1,577 -774 -32.92 130 -56.08 0.0096
2025-02-12 2024-12-31 13F TERADYNE COM 880770102 2,351 0 0.00 296 -5.73 0.0196
2024-11-08 2024-09-30 13F TERADYNE COM 880770102 2,351 374 18.92 315 7.17 0.0211
2024-08-14 2024-06-30 13F/A-1 TERADYNE COM 880770102 1,977 0 0.00 293 31.39 0.0232
2024-08-13 2024-06-30 13F TERADYNE COM 880770102 148 -1,829 293 0.0101
2024-05-09 2024-03-31 13F TERADYNE COM 880770102 1,977 1 0.05 223 4.21 0.0170
2024-02-08 2023-12-31 13F TERADYNE COM 880770102 1,976 0 0.00 214 8.08 0.0177
2023-11-13 2023-09-30 13F TERADYNE COM 880770102 1,976 243 14.02 199 3.13 0.0149
2023-08-10 2023-06-30 13F TERADYNE COM 880770102 1,733 -26,797 -93.93 193 -93.74 0.0136
2023-05-04 2023-03-31 13F TERADYNE COM 880770102 28,530 0 0.00 3,067 23.07 0.0412
2023-02-06 2022-12-31 13F TERADYNE COM 880770102 28,530 458 1.63 2,492 18.16 0.0368
2022-11-08 2022-09-30 13F TERADYNE COM 880770102 28,072 -6,804 -19.51 2,110 -32.47 0.0322
2022-08-10 2022-06-30 13F TERADYNE COM 880770102 34,876 -25,000 -41.75 3,123 -55.88 0.0407
2022-05-11 2022-03-31 13F TERADYNE COM 880770102 59,876 -43,869 -42.29 7,079 -58.27 0.0812
2022-02-08 2021-12-31 13F TERADYNE COM 880770102 103,745 37,444 56.48 16,965 134.39 0.1758
2021-10-27 2021-09-30 13F TERADYNE COM 880770102 66,301 -2,000 -2.93 7,238 -20.89 0.0774
2021-08-11 2021-06-30 13F TERADYNE COM 880770102 68,301 9,542 16.24 9,150 27.98 0.0919
2021-05-13 2021-03-31 13F TERADYNE COM 880770102 58,759 17,376 41.99 7,150 44.10 0.0789
2021-02-11 2020-12-31 13F TERADYNE COM 880770102 41,383 -9,357 -18.44 4,961 23.07 0.0563
2020-11-10 2020-09-30 13F TERADYNE COM 880770102 50,740 -3,467 -6.40 4,032 -12.01 0.0546
2020-08-12 2020-06-30 13F TERADYNE COM 880770102 54,207 -6,993 -11.43 4,581 38.19 0.0683
2020-05-14 2020-03-31 13F TERADYNE COM 880770102 61,200 7,355 13.66 3,315 -9.70 0.0571
2020-02-11 2019-12-31 13F TERADYNE COM 880770102 53,845 53,845 3,672 0.0473
2019-02-07 2018-12-31 13F TERADYNE COM 880770102 0 -125,623 -100.00 0 -100.00
2018-11-13 2018-09-30 13F TERADYNE COM 880770102 125,623 125,623 4,646 0.0796
2018-07-18 2018-06-30 13F TERADYNE COM 880770102 0 -139,000 -100.00 0 -100.00
2018-05-01 2018-03-31 13F TERADYNE COM 880770102 139,000 32,750 30.82 6,354 42.83 0.1269
2018-01-18 2017-12-31 13F TERADYNE COM 880770102 106,250 -69,150 -39.42 4,449 -31.99 0.1011
2017-10-30 2017-09-30 13F TERADYNE COM 880770102 175,400 -6,600 -3.63 6,541 19.67 0.1440
2017-08-09 2017-06-30 13F TERADYNE COM 880770102 182,000 182,000 5,465 0.1203
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.