Teradyne, Inc.
US ˙ NasdaqGS ˙ US8807701029

SecurityTER / Teradyne, Inc.
InstitutionAmalgamated Bank
Latest Disclosed Ownership28,973 shares
Latest Disclosed Value $ 8,589
Amalgamated Bank reports 3.46% decrease in ownership of TER / Teradyne, Inc.

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 28,973 shares of Teradyne, Inc. (US:TER) valued at $8,589,336 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 30,012 shares of Teradyne, Inc.. This represents a change in shares of -3.46% during the quarter. The current value of the position is $11,869,369 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-08 2026-03-31 13F TERADYNE COM 880770102 28,973 -1,039 -3.46 9 60.00 0.0657
2026-02-05 2025-12-31 13F TERADYNE COM 880770102 30,012 -248 -0.82 6 25.00 0.0419
2025-10-29 2025-09-30 13F TERADYNE COM 880770102 30,260 -623 -2.02 4 100.00 0.0298
2025-08-04 2025-06-30 13F TERADYNE COM 880770102 30,883 -3,255 -9.53 3 0.00 0.0214
2025-04-25 2025-03-31 13F TERADYNE COM 880770102 34,138 1,028 3.10 3 -50.00 0.0241
2025-02-04 2024-12-31 13F TERADYNE COM 880770102 33,110 -515 -1.53 4 0.00 0.0342
2024-10-30 2024-09-30 13F TERADYNE COM 880770102 33,625 370 1.11 5 0.00 0.0371
2024-08-12 2024-06-30 13F TERADYNE COM 880770102 33,255 270 0.82 5 33.33 0.0420
2024-04-23 2024-03-31 13F TERADYNE COM 880770102 32,985 -8,188 -19.89 4 -25.00 0.0318
2024-02-06 2023-12-31 13F TERADYNE COM 880770102 41,173 -2,710 -6.18 4 0.00 0.0356
2023-11-08 2023-09-30 13F TERADYNE COM 880770102 43,883 2,313 5.56 4 0.00 0.0375
2023-08-11 2023-06-30 13F TERADYNE COM 880770102 41,570 -1,045 -2.45 5 0.00 0.0375
2023-05-02 2023-03-31 13F TERADYNE COM 880770102 42,615 -275 -0.64 5 33.33 0.0391
2023-02-10 2022-12-31 13F TERADYNE COM 880770102 42,890 228 0.53 4 -99.91 0.0334
2022-11-09 2022-09-30 13F TERADYNE COM 880770102 42,662 -1,754 -3.95 3,206 -19.39 0.0309
2022-08-15 2022-06-30 13F TERADYNE COM 880770102 44,416 1,272 2.95 3,977 -22.03 0.0371
2022-08-25 2022-03-31 13F/A-1 TERADYNE COM 880770102 43,144 1,582 3.81 5,101 -24.95 0.0396
2022-06-30 2022-03-31 13F TERADYNE COM 880770102 43,144 1,582 5,101 0.0405
2022-02-15 2021-12-31 13F/A-1 TERADYNE COM 880770102 41,562 1,024 2.53 6,797 53.57 0.0502
2022-02-15 2021-12-31 13F TERADYNE COM 880770102 41,562 1,024 6,797 0.0502
2021-10-29 2021-09-30 13F TERADYNE COM 880770102 40,538 -1,919 -4.52 4,426 -22.19 0.0374
2021-08-16 2021-06-30 13F TERADYNE COM 880770102 42,457 9,803 30.02 5,688 43.17 0.0456
2021-05-13 2021-03-31 13F TERADYNE COM 880770102 32,654 -2,840 -8.00 3,973 -6.63 0.1490
2021-02-12 2020-12-31 13F TERADYNE COM 880770102 35,494 79 0.22 4,255 51.21 0.1613
2020-10-30 2020-09-30 13F TERADYNE COM 880770102 35,415 -370 -1.03 2,814 -6.94 0.1223
2020-08-10 2020-06-30 13F TERADYNE COM 880770102 35,785 -9,591 -21.14 3,024 23.03 0.1399
2020-05-13 2020-03-31 13F TERADYNE COM 880770102 45,376 -1,065 -2.29 2,458 -22.39 0.0601
2020-02-13 2019-12-31 13F TERADYNE COM 880770102 46,441 1,833 4.11 3,167 22.61 0.0583
2019-11-13 2019-09-30 13F TERADYNE COM 880770102 44,608 5,137 13.01 2,583 36.59 0.0543
2019-08-14 2019-06-30 13F TERADYNE COM 880770102 39,471 1,467 3.86 1,891 24.90 0.0441
2019-05-15 2019-03-31 13F TERADYNE COM 880770102 38,004 780 2.10 1,514 29.62 0.0367
2019-02-15 2018-12-31 13F TERADYNE COM 880770102 37,224 1,469 4.11 1,168 -11.65 0.0331
2018-11-14 2018-09-30 13F TERADYNE COM 880770102 35,755 -3,886 -9.80 1,322 -12.39 0.0327
2018-07-18 2018-06-30 13F TERADYNE COM 880770102 39,641 -3,904 -8.97 1,509 -24.17 0.0369
2018-05-22 2018-03-31 13F TERADYNE COM 880770102 43,545 1,884 4.52 1,990 14.11 0.0528
2018-02-13 2017-12-31 13F TERADYNE COM 880770102 41,661 2,198 5.57 1,744 18.48 0.0472
2017-11-09 2017-09-30 13F TERADYNE COM 880770102 39,463 -1,028 -2.54 1,472 21.05 0.0458
2017-08-10 2017-06-30 13F TERADYNE COM 880770102 40,491 8,343 25.95 1,216 21.60 0.0399
2017-05-12 2017-03-31 13F TERADYNE COM 880770102 32,148 946 3.03 1,000 26.10 0.0498
2017-02-14 2016-12-31 13F TERADYNE COM 880770102 31,202 3,598 13.03 793 33.05 0.0358
2016-11-15 2016-09-30 13F/A-1 TERADYNE COM 880770102 27,604 11 0.04 596 7.97 0.0346
2016-08-16 2016-06-30 13F TERADYNE COM 880770102 27,593 1,699 6.56 552 -1.25 0.0319
2016-05-11 2016-03-31 13F TERADYNE COM 880770102 25,894 2,227 9.41 559 14.31 0.0545
2016-02-10 2015-12-31 13F TERADYNE COM 880770102 23,667 -1,584 -6.27 489 7.47 0.0603
2015-11-04 2015-09-30 13F TERADYNE COM 880770102 25,251 217 0.87 455 -5.80 0.0477
2015-07-10 2015-06-30 13F TERADYNE COM 880770102 25,034 25,034 483 0.0474
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.