Teradyne, Inc.
US ˙ NasdaqGS ˙ US8807701029

SecurityTER / Teradyne, Inc.
InstitutionLazard Asset Management Llc
Latest Disclosed Ownership830,964 shares
Latest Disclosed Value $ 246,347,587
Lazard Asset Management Llc reports 2.33% increase in ownership of TER / Teradyne, Inc.

On May 15, 2026 - Lazard Asset Management Llc filed a 13F-HR form disclosing ownership of 830,964 shares of Teradyne, Inc. (US:TER) valued at $246,347,587 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 812,074 shares of Teradyne, Inc.. This represents a change in shares of 2.33% during the quarter. The current value of the position is $297,426,945 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 830,964 18,890 2.33 246,348 56.72 0.2112
2026-02-17 2025-12-31 13F TERADYNE COM 880770102 812,074 -29,494 -3.50 157,185 35.70 0.2663
2025-11-14 2025-09-30 13F TERADYNE COM 880770102 841,568 -32,210 -3.69 115,833 148,403.85 0.1559
2025-08-14 2025-06-30 13F TERADYNE Common Stock 880770102 873,778 -9,906 -1.12 79 8.33 0.1081
2025-05-15 2025-03-31 13F TERADYNE Common Stock 880770102 883,684 -21,447 -2.37 73 -36.28 0.1121
2025-02-14 2024-12-31 13F TERADYNE Common Stock 880770102 905,131 -27,100 -2.91 114 -8.87 0.1667
2024-11-14 2024-09-30 13F TERADYNE Common Stock 880770102 932,231 298,097 47.01 125 31.91 0.1670
2024-08-14 2024-06-30 13F TERADYNE Common Stock 880770102 634,134 134,059 26.81 94 67.86 0.1180
2024-07-09 2024-03-31 13F/A-1 TERADYNE Common Stock 880770102 500,075 -18,947 -3.65 56 0.00 0.0686
2024-05-14 2024-03-31 13F TERADYNE Common Stock 880770102 500,075 -18,947 56 0.0685
2024-02-14 2023-12-31 13F TERADYNE Common Stock 880770102 519,022 1,018 0.20 56 7.69 0.0713
2023-11-14 2023-09-30 13F TERADYNE Common Stock 880770102 518,004 -15,448 -2.90 52 -11.86 0.0708
2023-08-15 2023-06-30 13F TERADYNE Common Stock 880770102 533,452 -44,144 -7.64 59 -4.84 0.0731
2023-05-15 2023-03-31 13F TERADYNE Common Stock 880770102 577,596 -10,060 -1.71 62 -99.88 0.0814
2023-02-15 2022-12-31 13F TERADYNE Common Stock 880770102 587,656 -2,672 -0.45 51,331 15.71 0.0707
2022-11-14 2022-09-30 13F TERADYNE Common Stock 880770102 590,328 3,640 0.62 44,362 -15.56 0.0648
2022-08-09 2022-06-30 13F TERADYNE Common Stock 880770102 586,688 -108,310 -15.58 52,537 -36.06 0.0710
2022-05-13 2022-03-31 13F TERADYNE Common Stock 880770102 694,998 36,172 5.49 82,169 -23.73 0.0952
2022-02-09 2021-12-31 13F TERADYNE Common Stock 880770102 658,826 -1,474 -0.22 107,737 49.46 0.1146
2021-11-15 2021-09-30 13F TERADYNE Common Stock 880770102 660,300 45,757 7.45 72,084 -12.44 0.0813
2021-08-12 2021-06-30 13F TERADYNE Common Stock 880770102 614,543 556,669 961.86 82,323 1,069.03 0.0924
2021-05-14 2021-03-31 13F TERADYNE Common Stock 880770102 57,874 -400,168 -87.36 7,042 -87.18 0.0085
2021-02-11 2020-12-31 13F TERADYNE Common Stock 880770102 458,042 133,921 41.32 54,913 113.22 0.0694
2020-11-13 2020-09-30 13F TERADYNE Common Stock 880770102 324,121 187,114 136.57 25,754 122.46 0.0362
2020-08-13 2020-06-30 13F TERADYNE Common Stock 880770102 137,007 111,922 446.17 11,577 752.50 0.0178
2020-05-14 2020-03-31 13F TERADYNE Common Stock 880770102 25,085 13,250 111.96 1,358 68.28 0.0025
2020-02-13 2019-12-31 13F TERADYNE Common Stock 880770102 11,835 11,800 33,714.29 807 40,250.00 0.0012
2019-11-14 2019-09-30 13F TERADYNE Common Stock 880770102 35 -76,864 -99.95 2 -99.95 0.0000
2019-08-14 2019-06-30 13F TERADYNE Common Stock 880770102 76,899 73,991 2,544.39 3,684 3,103.48 0.0060
2019-08-28 2019-03-31 13F/A-1 TERADYNE Common Stock 880770102 2,908 -30,973 -91.42 115 -89.18 0.0002
2019-05-13 2019-03-31 13F TERADYNE Common Stock 880770102 2,908 -30,973 115
2019-08-28 2018-12-31 13F/A-1 TERADYNE Common Stock 880770102 33,881 -110,396 -76.52 1,063 -80.07 0.0020
2019-02-13 2018-12-31 13F TERADYNE Common Stock 880770102 33,881 -110,396 1,063
2019-08-30 2018-09-30 13F/A-1 TERADYNE Common Stock 880770102 144,277 1,909 1.34 5,334 -1.57 0.0086
2018-11-13 2018-09-30 13F TERADYNE Common Stock 880770102 144,277 1,909 5,334
2019-08-30 2018-06-30 13F/A-1 TERADYNE Common Stock 880770102 142,368 -165,702 -53.79 5,419 -61.52 0.0094
2018-08-13 2018-06-30 13F TERADYNE Common Stock 880770102 142,368 -165,702 5,419
2019-08-28 2018-03-31 13F/A-1 TERADYNE Common Stock 880770102 308,070 308,070 14,081 0.0240
2018-05-14 2018-03-31 13F TERADYNE Common Stock 880770102 308,070 308,070 14,081
2019-08-07 2016-09-30 13F/A-1 TERADYNE Common Stock 880770102 0 -3,810,378 -100.00 0 -100.00
2019-07-29 2016-06-30 13F/A-1 TERADYNE Common Stock 880770102 3,810,378 -3,158,765 -45.33 75,025 -50.14 0.1583
2016-08-15 2016-06-30 13F TERADYNE Common Stock 880770102 3,764,535 -3,204,608 74,123
2019-07-25 2016-03-31 13F/A-1 TERADYNE Common Stock 880770102 6,969,143 819,297 13.32 150,462 18.36 0.3282
2016-05-12 2016-03-31 13F TERADYNE Common Stock 880770102 6,864,105 714,259 148,196
2019-07-24 2015-12-31 13F/A-1 TERADYNE Common Stock 880770102 6,149,846 315,043 5.40 127,117 20.97 0.2909
2016-02-12 2015-12-31 13F TERADYNE Common Stock 880770102 6,062,705 227,902 125,316
2019-07-15 2015-09-30 13F/A-1 TERADYNE Common Stock 880770102 5,834,803 -3,041,588 -34.27 105,083 -38.63 0.2512
2015-11-13 2015-09-30 13F TERADYNE Common Stock 880770102 5,748,260 -3,128,131 103,526
2019-07-08 2015-06-30 13F/A-1 TERADYNE Common Stock 880770102 8,876,391 14,461 0.16 171,224 2.50 0.3589
2015-08-13 2015-06-30 13F TERADYNE Common Stock 880770102 8,742,025 -119,905 168,633
2015-06-09 2015-03-31 13F/A-1 TERADYNE Common Stock 880770102 8,861,930 -448,851 -4.82 167,047 -9.34 0.3600
2015-05-15 2015-03-31 13F TERADYNE Common Stock 880770102 8,861,930 167,047
2019-08-29 2014-12-31 13F/A-3 TERADYNE Common Stock 880770102 9,310,781 139,599 1.52 184,259 3.62 0.3935
2015-05-20 2014-12-31 13F/A-1 TERADYNE Common Stock 880770102 9,153,115 -157,666 181,140 0.3488
2015-06-09 2014-12-31 13F/A-2 TERADYNE Common Stock 880770102 9,153,115 0 181,140 0.4133
2015-02-12 2014-12-31 13F TERADYNE Common Stock 880770102 9,310,781 184,260
2014-11-07 2014-09-30 13F TERADYNE Common Stock 880770102 9,171,182 3,050,693 49.84 177,829 48.24 0.3818
2014-08-12 2014-06-30 13F TERADYNE Common Stock 880770102 6,120,489 756,395 14.10 119,961 12.44 0.2507
2014-05-12 2014-03-31 13F TERADYNE Common Stock 880770102 5,364,094 4,808,779 865.96 106,691 990.46 0.2383
2014-02-14 2013-12-31 13F TERADYNE Common Stock 880770102 555,315 88,000 18.83 9,784 26.74 0.0217
2014-01-13 2013-09-30 13F/A-1 TERADYNE Common Stock 880770102 467,315 467,315 7,720 0.0183
2013-11-13 2013-09-30 13F TERADYNE Common Stock 880770102 467,315 7,720 0.0163
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.