Teradyne, Inc.
US ˙ NasdaqGS ˙ US8807701029

SecurityTER / Teradyne, Inc.
InstitutionOMERS ADMINISTRATION Corp
Latest Disclosed Ownership9,174 shares
Latest Disclosed Value $ 2,719,724
OMERS ADMINISTRATION Corp reports 67.23% increase in ownership of TER / Teradyne, Inc.

On May 15, 2026 - OMERS ADMINISTRATION Corp filed a 13F-HR form disclosing ownership of 9,174 shares of Teradyne, Inc. (US:TER) valued at $2,719,724 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 5,486 shares of Teradyne, Inc.. This represents a change in shares of 67.23% during the quarter. The current value of the position is $3,758,313 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)
2026-05-15 2026-03-31 13F TERADYNE COM 880770102 9,174 3,688 67.23 2,720 156.27 0.0175
2026-02-13 2025-12-31 13F TERADYNE COM 880770102 5,486 0 0.00 1,062 40.53 0.0076
2025-11-14 2025-09-30 13F TERADYNE COM 880770102 5,486 0 0.00 755 53.14 0.0054
2025-08-13 2025-06-30 13F TERADYNE COM 880770102 5,486 0 0.00 493 8.83 0.0039
2025-05-14 2025-03-31 13F TERADYNE COM 880770102 5,486 -928 -14.47 453 -43.87 0.0040
2025-02-14 2024-12-31 13F TERADYNE COM 880770102 6,414 1,112 20.97 808 13.66 0.0071
2024-11-13 2024-09-30 13F TERADYNE COM 880770102 5,302 0 0.00 710 -9.67 0.0065
2024-08-13 2024-06-30 13F TERADYNE COM 880770102 5,302 5,302 786 0.0076
2017-02-09 2016-12-31 13F TERADYNE COM 880770102 0 -41,100 -100.00 0 -100.00
2016-11-14 2016-09-30 13F TERADYNE COM 880770102 41,100 0 0.00 887 9.64 0.0158
2016-08-11 2016-06-30 13F TERADYNE COM 880770102 41,100 41,100 0.00 809 0.0167
2016-05-12 2016-03-31 13F TERADYNE COM 880770102 0 -56,400 -100.00 0 -100.00
2016-02-11 2015-12-31 13F TERADYNE COM 880770102 56,400 56,400 0.00 1,166 0.0301
2015-02-11 2014-12-31 13F TERADYNE COM 880770102 0 -32,000 -100.00 0 -100.00
2014-11-10 2014-09-30 13F TERADYNE COM 880770102 32,000 32,000 620 0.0185
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.