Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionJlb & Associates Inc
Latest Disclosed Ownership253,092 shares
Latest Disclosed Value $ 31,978,174
Jlb & Associates Inc reports 13.95% decrease in ownership of APH / Amphenol Corporation

On May 4, 2026 - Jlb & Associates Inc filed a 13F-HR form disclosing ownership of 253,092 shares of Amphenol Corporation (US:APH) valued at $31,978,174 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 294,117 shares of Amphenol Corporation. This represents a change in shares of -13.95% during the quarter. The current value of the position is $37,361,441 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)
2026-05-04 2026-03-31 13F AMPHENOL COM 032095101 253,092 -41,025 -13.95 31,978 -19.54 4.5916
2026-02-03 2025-12-31 13F AMPHENOL COM 032095101 294,117 -17,991 -5.76 39,747 2.91 5.3621
2025-10-30 2025-09-30 13F AMPHENOL COM 032095101 312,108 -17,782 -5.39 38,623 18.56 5.0794
2025-07-17 2025-06-30 13F AMPHENOL COM 032095101 329,890 -32,429 -8.95 32,577 37.08 4.5428
2025-04-17 2025-03-31 13F AMPHENOL COM 032095101 362,319 -10,891 -2.92 23,765 -8.31 3.3141
2025-02-03 2024-12-31 13F AMPHENOL COM 032095101 373,210 -12,079 -3.14 25,919 3.24 3.5187
2024-10-02 2024-09-30 13F AMPHENOL COM 032095101 385,289 -15,486 -3.86 25,105 -7.02 3.2303
2024-07-18 2024-06-30 13F AMPHENOL COM 032095101 400,775 189,918 90.07 27,000 11.01 3.6453
2024-04-30 2024-03-31 13F AMPHENOL COM 032095101 210,857 -5,692 -2.63 24,322 13.30 3.2345
2024-01-22 2023-12-31 13F AMPHENOL COM 032095101 216,549 -1,453 -0.67 21,467 17.24 3.0852
2023-11-01 2023-09-30 13F AMPHENOL COM 032095101 218,002 -16,668 -7.10 18,310 -8.16 2.8707
2023-07-20 2023-06-30 13F AMPHENOL COM 032095101 234,670 -1,712 -0.72 19,935 3.20 2.8398
2023-04-25 2023-03-31 13F AMPHENOL COM 032095101 236,382 1,827 0.78 19,317 113,529.41 2.9068
2023-01-26 2022-12-31 13F AMPHENOL COM 032095101 234,555 -6,796 -2.82 18 -99.89 2.8458
2022-10-19 2022-09-30 13F AMPHENOL COM 032095101 241,351 2,386 1.00 16,160 5.04 2.8666
2022-07-19 2022-06-30 13F/A-1 AMPHENOL COM 032095101 238,965 -1,326 -0.55 15,384 -15.03 2.6212
2022-07-19 2022-06-30 13F AMPHENOL COM 032095101 238,965 -1,326 15,384 2.6212
2022-04-08 2022-03-31 13F AMPHENOL COM 032095101 240,291 1,798 0.75 18,105 -13.20 2.7068
2022-01-26 2021-12-31 13F AMPHENOL COM 032095101 238,493 -1,275 -0.53 20,858 18.79 2.9596
2021-11-10 2021-09-30 13F AMPHENOL COM 032095101 239,768 -16,943 -6.60 17,558 -0.02 2.7876
2021-07-29 2021-06-30 13F AMPHENOL COM 032095101 256,711 -5,276 -2.01 17,561 1.61 2.7354
2021-05-13 2021-03-31 13F AMPHENOL COM 032095101 261,987 131,753 101.17 17,283 1.49 2.8431
2021-01-28 2020-12-31 13F AMPHENOL COM 032095101 130,234 -1,236 -0.94 17,030 19.64 2.8258
2020-10-16 2020-09-30 13F AMPHENOL COM 032095101 131,470 -3,594 -2.66 14,234 10.00 2.6171
2020-07-13 2020-06-30 13F AMPHENOL COM 032095101 135,064 1,430 1.07 12,940 32.87 2.5832
2020-05-19 2020-03-31 13F AMPHENOL COM 032095101 133,634 -6,122 -4.38 9,739 -35.61 2.3102
2020-02-10 2019-12-31 13F AMPHENOL COM 032095101 139,756 -1,174 -0.83 15,125 11.22 2.7788
2019-10-29 2019-09-30 13F AMPHENOL COM 032095101 140,930 692 0.49 13,599 1.08 2.6940
2019-08-05 2019-06-30 13F AMPHENOL COM 032095101 140,238 2,655 1.93 13,454 3.55 2.7205
2019-04-30 2019-03-31 13F AMPHENOL COM 032095101 137,583 810 0.59 12,993 17.25 2.7401
2019-01-11 2018-12-31 13F AMPHENOL COM 032095101 136,773 -972 -0.71 11,081 -14.43 2.7009
2018-10-10 2018-09-30 13F AMPHENOL COM 032095101 137,745 -14,638 -9.61 12,950 -2.48 2.7730
2018-07-09 2018-06-30 13F AMPHENOL COM 032095101 152,383 -1,947 -1.26 13,280 -0.09 2.8268
2018-04-23 2018-03-31 13F AMPHENOL COM 032095101 154,330 -3,313 -2.10 13,292 -3.97 2.8608
2018-01-24 2017-12-31 13F AMPHENOL COM 032095101 157,643 12,869 8.89 13,841 12.96 3.0089
2017-10-12 2017-09-30 13F AMPHENOL COM 032095101 144,774 -3,397 -2.29 12,253 12.03 2.9926
2017-07-31 2017-06-30 13F AMPHENOL COM 032095101 148,171 -8,157 -5.22 10,937 4.11 2.7760
2017-01-18 2016-12-31 13F AMPHENOL COM 032095101 156,328 -19 -0.01 10,505 3.50 2.8408
2016-10-26 2016-09-30 13F AMPHENOL COM 032095101 156,347 -328 -0.21 10,150 13.00 2.7981
2016-07-21 2016-06-30 13F AMPHENOL COM 032095101 156,675 1,183 0.76 8,982 -0.09 2.5454
2016-04-08 2016-03-31 13F AMPHENOL COM 032095101 155,492 2,641 1.73 8,990 12.61 2.6313
2016-02-01 2015-12-31 13F AMPHENOL COM 032095101 152,851 -1,219 -0.79 7,983 1.68 2.4664
2015-10-19 2015-09-30 13F AMPHENOL COM 032095101 154,070 -1,586 -1.02 7,851 -12.99 2.5312
2015-07-21 2015-06-30 13F AMPHENOL COM 032095101 155,656 720 0.46 9,023 -1.17 2.7947
2015-04-09 2015-03-31 13F AMPHENOL COM 032095101 154,936 154,936 0.00 9,130 2.8542
2015-01-28 2014-12-31 13F AMPHENOL COM 032095101 0 -75,695 -100.00 0 -100.00
2014-10-07 2014-09-30 13F AMPHENOL COM 032095101 75,695 -1,378 -1.79 7,558 1.79 2.7095
2014-07-11 2014-06-30 13F AMPHENOL COM 032095101 77,073 285 0.37 7,425 5.51 2.6959
2014-04-04 2014-03-31 13F AMPHENOL COM 032095101 76,788 -287 -0.37 7,037 2.39 2.6227
2014-01-17 2013-12-31 13F AMPHENOL COM 032095101 77,075 -1,088 -1.39 6,873 13.64 2.6174
2013-10-07 2013-09-30 13F AMPHENOL COM 032095101 78,163 634 0.82 6,048 0.10 2.5500
2013-08-12 2013-06-30 13F AMPHENOL COM 032095101 77,529 77,529 6,042 2.7557
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.