Teradyne, Inc.
MX ˙ BMV ˙ US8807701029
SecurityMX:TER / Teradyne, Inc.
InstitutionAlliancebernstein L.p.
Latest Disclosed Ownership566,925 shares
Latest Disclosed Value $ 109,734,003
Alliancebernstein L.p. reports 24.47% decrease in ownership of TER / Teradyne, Inc.

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 566,925 shares of Teradyne, Inc. (MX:TER) valued at $109,734,003 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 750,634 shares of Teradyne, Inc.. This represents a change in shares of -24.47% 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)
2026-05-15 2026-03-31 13F TERADYNE COM 880770102 566,925 -183,709 -24.47 109,734 -24.47 0.0355
2026-02-17 2025-12-31 13F TERADYNE COM 880770102 750,634 -125,233 -14.30 145,293 20.52 0.0459
2025-11-14 2025-09-30 13F TERADYNE COM 880770102 875,867 681,571 350.79 120,554 590.02 0.0380
2025-08-14 2025-06-30 13F TERADYNE COM 880770102 194,296 23,722 13.91 17,471 24.00 0.0057
2025-05-15 2025-03-31 13F TERADYNE COM 880770102 170,574 -89,387 -34.38 14,089 -56.96 0.0051
2025-02-12 2024-12-31 13F TERADYNE COM 880770102 259,961 -27,795 -9.66 32,734 -15.06 0.0111
2024-11-14 2024-09-30 13F TERADYNE COM 880770102 287,756 -97,731 -25.35 38,539 -32.58 0.0129
2024-08-14 2024-06-30 13F TERADYNE COM 880770102 385,487 202,813 111.02 57,164 177.34 0.0199
2024-05-14 2024-03-31 13F TERADYNE COM 880770102 182,674 -168,712 -48.01 20,611 -45.95 0.0073
2024-02-14 2023-12-31 13F TERADYNE COM 880770102 351,386 30,633 9.55 38,132 18.34 0.0147
2023-11-14 2023-09-30 13F TERADYNE COM 880770102 320,753 14,019 4.57 32,223 -5.64 0.0137
2023-08-15 2023-06-30 13F TERADYNE COM 880770102 306,734 -16,416 -5.08 34,149 -1.71 0.0139
2023-05-15 2023-03-31 13F TERADYNE COM 880770102 323,150 -9,026 -2.72 34,742 19.73 0.0149
2023-02-15 2022-12-31 13F TERADYNE COM 880770102 332,176 117,117 54.46 29,016 79.53 0.0131
2022-11-15 2022-09-30 13F TERADYNE COM 880770102 215,059 -115,233 -34.89 16,162 -45.36 0.0078
2022-08-15 2022-06-30 13F TERADYNE COM 880770102 330,292 -18,303 -5.25 29,578 -28.23 0.0135
2022-05-13 2022-03-31 13F TERADYNE COM 880770102 348,595 -92,243 -20.92 41,214 -42.83 0.0159
2022-02-14 2021-12-31 13F TERADYNE COM 880770102 440,838 22,979 5.50 72,090 58.03 0.0255
2021-11-10 2021-09-30 13F TERADYNE COM 880770102 417,859 -7,084 -1.67 45,618 -19.86 0.0180
2021-07-30 2021-06-30 13F TERADYNE COM 880770102 424,943 67,800 18.98 56,925 30.99 0.0229
2021-05-06 2021-03-31 13F TERADYNE COM 880770102 357,143 3,903 1.10 43,457 2.61 0.0191
2021-02-08 2020-12-31 13F TERADYNE COM 880770102 353,240 -14,528 -3.95 42,350 44.92 0.0200
2020-11-12 2020-09-30 13F TERADYNE COM 880770102 367,768 -26,002 -6.60 29,223 -12.19 0.0157
2020-08-13 2020-06-30 13F TERADYNE COM 880770102 393,770 -32,543 -7.63 33,278 44.10 0.0196
2020-05-14 2020-03-31 13F TERADYNE COM 880770102 426,313 -40,050 -8.59 23,093 -27.38 0.0166
2020-02-18 2019-12-31 13F TERADYNE COM 880770102 466,363 114,369 32.49 31,801 56.01 0.0181
2019-11-14 2019-09-30 13F TERADYNE COM 880770102 351,994 -13,311 -3.64 20,384 16.47 0.0127
2019-08-14 2019-06-30 13F TERADYNE COM 880770102 365,305 -5,108 -1.38 17,502 18.60 0.0109
2019-05-14 2019-03-31 13F TERADYNE COM 880770102 370,413 -10,269 -2.70 14,757 23.53 0.0096
2019-02-13 2018-12-31 13F TERADYNE COM 880770102 380,682 248,808 188.67 11,946 144.95 0.0089
2018-11-08 2018-09-30 13F TERADYNE COM 880770102 131,874 16,832 14.63 4,877 11.35 0.0032
2018-08-13 2018-06-30 13F TERADYNE COM 880770102 115,042 -10,685 -8.50 4,380 -23.79 0.0030
2018-05-14 2018-03-31 13F TERADYNE COM 880770102 125,727 -1,910 -1.50 5,747 7.54 0.0042
2018-02-13 2017-12-31 13F TERADYNE COM 880770102 127,637 -855 -0.67 5,344 11.54 0.0038
2017-11-13 2017-09-30 13F TERADYNE COM 880770102 128,492 -113,814 -46.97 4,791 -34.15 0.0036
2017-08-10 2017-06-30 13F TERADYNE COM 880770102 242,306 99,369 69.52 7,276 63.69 0.0056
2017-05-11 2017-03-31 13F TERADYNE COM 880770102 142,937 -24,360 -14.56 4,445 4.61 0.0035
2017-02-13 2016-12-31 13F TERADYNE COM 880770102 167,297 -9,480 -5.36 4,249 11.38 0.0035
2016-11-10 2016-09-30 13F TERADYNE COM 880770102 176,777 -5,810 -3.18 3,815 6.12 0.0032
2016-08-11 2016-06-30 13F TERADYNE COM 880770102 182,587 -7,490 -3.94 3,595 -12.40 0.0031
2016-05-13 2016-03-31 13F TERADYNE COM 880770102 190,077 -800 -0.42 4,104 4.03 0.0035
2016-02-16 2015-12-31 13F/A-1 TERADYNE COM 880770102 190,877 -77,005 -28.75 3,945 -18.24 0.0034
2016-02-12 2015-12-31 13F TERADYNE COM 880770102 190,877 3,438
2015-11-13 2015-09-30 13F TERADYNE COM 880770102 267,882 -3,675 -1.35 4,825 -7.88 0.0041
2015-08-14 2015-06-30 13F TERADYNE COM 880770102 271,557 -2,383,012 -89.77 5,238 -89.53 0.0043
2015-05-13 2015-03-31 13F TERADYNE COM 880770102 2,654,569 -295,510 -10.02 50,039 -14.29 0.0406
2015-02-13 2014-12-31 13F TERADYNE COM 880770102 2,950,079 -2,283,349 -43.63 58,382 -42.47 0.0485
2014-11-13 2014-09-30 13F TERADYNE COM 880770102 5,233,428 -4,683,950 -47.23 101,476 -47.80 0.0855
2014-08-13 2014-06-30 13F TERADYNE COM 880770102 9,917,378 -2,036,008 -17.03 194,381 -18.24 0.1638
2014-05-13 2014-03-31 13F TERADYNE COM 880770102 11,953,386 7,219,907 152.53 237,753 185.06 0.2054
2014-02-13 2013-12-31 13F TERADYNE COM 880770102 4,733,479 -188,331 -3.83 83,404 2.58 0.0746
2013-11-14 2013-09-30 13F TERADYNE COM 880770102 4,921,810 -1,182,868 -19.38 81,308 -24.19 0.0803
2013-08-13 2013-06-30 13F TERADYNE COM 880770102 6,104,678 6,104,678 107,259 0.1139
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.