Cognex Corporation
MX ˙ BMV ˙ US1924221039
SecurityMX:CGNX / Cognex Corporation
InstitutionWelch & Forbes Llc
Latest Disclosed Ownership322,893 shares
Latest Disclosed Value $ 15,818,548
Welch & Forbes Llc reports 2.34% decrease in ownership of CGNX / Cognex Corporation

On May 1, 2026 - Welch & Forbes Llc filed a 13F-HR form disclosing ownership of 322,893 shares of Cognex Corporation (MX:CGNX) valued at $15,818,548 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 330,638 shares of Cognex Corporation. This represents a change in shares of -2.34% 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.

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)
2026-05-01 2026-03-31 13F COGNEX COM 192422103 322,893 -7,745 -2.34 15,819 32.97 0.2045
2026-02-10 2025-12-31 13F COGNEX COM 192422103 330,638 -8,479 -2.50 11,896 -22.56 0.1441
2025-11-04 2025-09-30 13F COGNEX COM 192422103 339,117 -5,148 -1.50 15,362 40.68 0.1850
2025-08-05 2025-06-30 13F COGNEX COM 192422103 344,265 13,923 4.21 10,920 10.82 0.1364
2025-05-02 2025-03-31 13F COGNEX COM 192422103 330,342 5,077 1.56 9,854 -15.52 0.1289
2025-02-07 2024-12-31 13F COGNEX COM 192422103 325,265 -6,469 -1.95 11,664 -13.18 0.1500
2024-11-04 2024-09-30 13F COGNEX COM 192422103 331,734 -3,105 -0.93 13,435 -16.99 0.1710
2024-08-02 2024-06-30 13F COGNEX COM 192422103 334,839 10,859 3.35 16,186 17.77 0.2160
2024-05-03 2024-03-31 13F COGNEX COM 192422103 323,980 12,651 4.06 13,743 5.76 0.1887
2024-02-06 2023-12-31 13F COGNEX COM 192422103 311,329 3,760 1.22 12,995 -0.45 0.1963
2023-11-03 2023-09-30 13F COGNEX COM 192422103 307,569 -10,773 -3.38 13,053 -26.80 0.2158
2023-07-28 2023-06-30 13F COGNEX COM 192422103 318,342 7,729 2.49 17,834 15.87 0.2813
2023-04-14 2023-03-31 13F COGNEX COM 192422103 310,613 -1,720 -0.55 15,391 4.59 0.2606
2023-02-02 2022-12-31 13F COGNEX COM 192422103 312,333 -2,235 -0.71 14,714 12.85 0.2637
2022-10-31 2022-09-30 13F COGNEX COM 192422103 314,568 -2,715 -0.86 13,039 -3.35 0.2546
2022-07-22 2022-06-30 13F COGNEX COM 192422103 317,283 153 0.05 13,491 -44.86 0.2468
2022-04-25 2022-03-31 13F COGNEX COM 192422103 317,130 7,160 2.31 24,467 1.51 0.3855
2022-01-19 2021-12-31 13F COGNEX COM 192422103 309,970 3,094 1.01 24,103 -2.09 0.3608
2021-10-13 2021-09-30 13F COGNEX COM 192422103 306,876 -931 -0.30 24,617 -4.85 0.4091
2021-07-22 2021-06-30 13F COGNEX COM 192422103 307,807 -30 -0.01 25,871 1.27 0.4371
2021-04-14 2021-03-31 13F COGNEX COM 192422103 307,837 -12,375 -3.86 25,547 -0.63 0.4718
2021-01-20 2020-12-31 13F COGNEX COM 192422103 320,212 -1,749 -0.54 25,708 22.65 0.5029
2020-10-23 2020-09-30 13F COGNEX COM 192422103 321,961 -9,109 -2.75 20,960 6.01 0.4523
2020-07-15 2020-06-30 13F COGNEX COM 192422103 331,070 -16,947 -4.87 19,771 34.56 0.4631
2020-04-17 2020-03-31 13F COGNEX COM 192422103 348,017 -6,948 -1.96 14,693 -26.14 0.4104
2020-01-17 2019-12-31 13F COGNEX COM 192422103 354,965 -2,013 -0.56 19,893 13.43 0.4426
2019-10-11 2019-09-30 13F COGNEX COM 192422103 356,978 -6,391 -1.76 17,538 0.60 0.4185
2019-07-12 2019-06-30 13F COGNEX COM 192422103 363,369 -6,480 -1.75 17,434 -7.32 0.4244
2019-04-29 2019-03-31 13F COGNEX COM 192422103 369,849 -30,227 -7.56 18,810 21.58 0.4719
2019-02-05 2018-12-31 13F COGNEX COM 192422103 400,076 -17,754 -4.25 15,471 -33.67 0.4362
2018-10-17 2018-09-30 13F COGNEX COM 192422103 417,830 -2,926 -0.70 23,323 24.26 0.5559
2018-07-16 2018-06-30 13F COGNEX COM 192422103 420,756 -23,695 -5.33 18,770 -18.77 0.4853
2018-04-12 2018-03-31 13F COGNEX COM 192422103 444,451 -27,492 -5.83 23,107 -19.95 0.5954
2018-01-26 2017-12-31 13F COGNEX COM 192422103 471,943 217,396 85.41 28,864 2.82 0.7704
2017-11-13 2017-09-30 13F COGNEX COM 192422103 254,547 -7,284 -2.78 28,071 26.28 0.7389
2017-07-31 2017-06-30 13F COGNEX COM 192422103 261,831 569 0.22 22,229 1.35 0.6213
2017-07-31 2017-03-31 13F/A-1 COGNEX COM 192422103 261,262 -12,923 -4.71 21,933 25.73 0.6278
2017-04-27 2017-03-31 13F COGNEX COM 192422103 261,262 21,933
2017-02-07 2016-12-31 13F COGNEX COM 192422103 274,185 -5,215 -1.87 17,444 18.11 0.5220
2016-11-02 2016-09-30 13F COGNEX COM 192422103 279,400 -3,317 -1.17 14,769 21.21 0.5107
2016-08-02 2016-06-30 13F COGNEX COM 192422103 282,717 790 0.28 12,185 10.95 0.3713
2016-05-05 2016-03-31 13F COGNEX COM 192422103 281,927 -1,250 -0.44 10,982 14.84 0.3420
2016-01-27 2015-12-31 13F COGNEX COM 192422103 283,177 -6,684 -2.31 9,563 -4.01 0.3068
2015-11-05 2015-09-30 13F COGNEX COM 192422103 289,861 -6,498 -2.19 9,962 -30.12 0.3325
2015-08-11 2015-06-30 13F COGNEX COM 192422103 296,359 -6,735 -2.22 14,255 -5.16 0.4435
2015-04-30 2015-03-31 13F COGNEX COM 192422103 303,094 303,094 0.00 15,031 0.4516
2015-01-27 2014-12-31 13F COGNEX COM 192422103 0 -312,276 -100.00 0 -100.00
2014-10-27 2014-09-30 13F COGNEX COM 192422103 312,276 -8,164 -2.55 12,575 2.19 0.3839
2014-07-31 2014-06-30 13F COGNEX COM 192422103 320,440 -5,469 -1.68 12,305 11.51 0.3884
2014-05-01 2014-03-31 13F COGNEX COM 192422103 325,909 -13,157 -3.88 11,035 -14.75 0.3495
2014-01-17 2013-12-31 13F COGNEX COM 192422103 339,066 -2,740 -0.80 12,945 21.04 0.4098
2013-10-31 2013-09-30 13F COGNEX COM 192422103 341,806 169,765 98.68 10,695 37.47 0.3600
2013-08-08 2013-06-30 13F COGNEX COM 192422103 172,041 172,041 7,780 0.2782
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.