Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionBessemer Group Inc
Latest Disclosed Ownership50,422 shares
Latest Disclosed Value $ 6,371
Bessemer Group Inc reports 11.10% increase in ownership of APH / Amphenol Corporation

On May 6, 2026 - Bessemer Group Inc filed a 13F-HR form disclosing ownership of 50,422 shares of Amphenol Corporation (US:APH) valued at $6,370,820 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 45,384 shares of Amphenol Corporation. This represents a change in shares of 11.10% during the quarter. The current value of the position is $7,443,296 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)
2026-05-06 2026-03-31 13F AMPHENOL SC 032095101 50,422 5,038 11.10 6 0.00 0.0100
2026-02-05 2025-12-31 13F AMPHENOL SC 032095101 45,384 7,095 18.53 6 50.00 0.0094
2025-11-05 2025-09-30 13F AMPHENOL SC 032095101 38,289 1,000 2.68 5 33.33 0.0072
2025-08-01 2025-06-30 13F AMPHENOL SC 032095101 37,289 -15,228 -29.00 4 0.00 0.0060
2025-04-23 2025-03-31 13F AMPHENOL SC 032095101 52,517 -48,707 -48.12 3 -57.14 0.0062
2025-02-13 2024-12-31 13F AMPHENOL SC 032095101 101,224 -142 -0.14 7 16.67 0.0115
2024-11-12 2024-09-30 13F AMPHENOL SC 032095101 101,366 -2,832 -2.72 7 -14.29 0.0109
2024-08-13 2024-06-30 13F AMPHENOL SC 032095101 104,198 49,138 89.24 7 16.67 0.0124
2024-08-13 2024-03-31 13F/A-1 AMPHENOL SC 032095101 55,060 16,936 44.42 6 100.00 0.0115
2024-05-13 2024-03-31 13F AMPHENOL SC 032095101 55,060 16,936 6 0.0115
2024-02-09 2023-12-31 13F AMPHENOL SC 032095101 38,124 -2,147,981 -98.26 4 -98.36 0.0074
2023-11-13 2023-09-30 13F AMPHENOL SC 032095101 2,186,105 -16,242 -0.74 184 -2.14 0.4031
2023-08-10 2023-06-30 13F AMPHENOL SC 032095101 2,202,347 -26,864 -1.21 187 2.75 0.3969
2023-05-10 2023-03-31 13F AMPHENOL SC 032095101 2,229,211 -26,878 -1.19 182 6.43 0.4324
2023-02-13 2022-12-31 13F AMPHENOL SC 032095101 2,256,089 -706,113 -23.84 172 -99.91 0.4184
2022-11-09 2022-09-30 13F AMPHENOL SC 032095101 2,962,202 -31,030 -1.04 198,348 2.93 0.5177
2022-08-10 2022-06-30 13F AMPHENOL SC 032095101 2,993,232 -7,945 -0.26 192,704 -14.78 0.4805
2022-05-12 2022-03-31 13F AMPHENOL SC 032095101 3,001,177 49,247 1.67 226,138 -12.41 0.4744
2022-01-27 2021-12-31 13F AMPHENOL SC 032095101 2,951,930 54,614 1.88 258,175 21.68 0.5173
2021-11-12 2021-09-30 13F AMPHENOL SC 032095101 2,897,316 36,926 1.29 212,172 8.43 0.4525
2021-08-06 2021-06-30 13F AMPHENOL SC 032095101 2,860,390 16,197 0.57 195,679 4.29 0.4247
2021-05-13 2021-03-31 13F AMPHENOL SC 032095101 2,844,193 1,439,653 102.50 187,631 2.15 0.4496
2021-02-09 2020-12-31 13F AMPHENOL SC 032095101 1,404,540 -107,079 -7.08 183,674 12.23 0.4854
2020-11-12 2020-09-30 13F AMPHENOL SC 032095101 1,511,619 -48,921 -3.13 163,662 9.46 0.4837
2020-08-05 2020-06-30 13F AMPHENOL SC 032095101 1,560,540 190,650 13.92 149,515 49.76 0.4720
2020-04-30 2020-03-31 13F AMPHENOL SC 032095101 1,369,890 -113,766 -7.67 99,837 -37.83 0.4021
2020-02-04 2019-12-31 13F AMPHENOL SC 032095101 1,483,656 103,517 7.50 160,576 20.57 0.5198
2019-11-07 2019-09-30 13F AMPHENOL SC 032095101 1,380,139 1,369,200 12,516.68 133,185 12,596.38 0.4755
2019-07-19 2019-06-30 13F AMPHENOL SC 032095101 10,939 -2,319 -17.49 1,049 -16.21 0.0035
2019-05-13 2019-03-31 13F AMPHENOL SC 032095101 13,258 509 3.99 1,252 21.20 0.0048
2019-05-21 2018-12-31 13F/A-1 AMPHENOL SC 032095101 12,749 -61,430 -82.81 1,033 -85.19 0.0045
2019-02-12 2018-12-31 13F AMPHENOL SC 032095101 12,749 -61,430 1,033 0.0045
2018-11-06 2018-09-30 13F AMPHENOL SC 032095101 74,179 -317 -0.43 6,975 7.42 0.0260
2018-07-25 2018-06-30 13F AMPHENOL SC 032095101 74,496 0 0.00 6,493 1.20 0.0252
2018-05-10 2018-03-31 13F AMPHENOL SC 032095101 74,496 -9,609 -11.43 6,416 -13.12 0.0250
2018-01-30 2017-12-31 13F AMPHENOL SC 032095101 84,105 350 0.42 7,385 4.18 0.0287
2017-11-03 2017-09-30 13F AMPHENOL SC 032095101 83,755 69,878 503.55 7,089 592.29 0.0283
2017-07-27 2017-06-30 13F AMPHENOL SC 032095101 13,877 0 0.00 1,024 3.64 0.0041
2017-05-12 2017-03-31 13F AMPHENOL SC 032095101 13,877 345 2.55 988 8.57 0.0041
2017-02-07 2016-12-31 13F AMPHENOL SC 032095101 13,532 0 0.00 910 3.53 0.0042
2016-11-10 2016-09-30 13F AMPHENOL SC 032095101 13,532 -4,620 -25.45 879 -15.56 0.0044
2016-08-11 2016-06-30 13F AMPHENOL SC 032095101 18,152 -2,450 -11.89 1,041 -12.67 0.0057
2016-05-11 2016-03-31 13F AMPHENOL SC 032095101 20,602 -4,929 -19.31 1,192 -10.71 0.0067
2016-02-12 2015-12-31 13F AMPHENOL SC 032095101 25,531 -1,322 -4.92 1,335 -2.41 0.0074
2015-11-16 2015-09-30 13F AMPHENOL SC 032095101 26,853 -7,388 -21.58 1,368 -31.05 0.0078
2015-08-14 2015-06-30 13F AMPHENOL SC 032095101 34,241 -93 -0.27 1,984 -1.93 0.0104
2015-06-18 2015-03-31 13F/A-1 AMPHENOL SC 032095101 34,334 -2,157 -5.91 2,023 3.00 0.0103
2015-05-14 2015-03-31 13F AMPHENOL SC 032095101 34,334 2,023
2015-02-17 2014-12-31 13F AMPHENOL SC 032095101 36,491 19,992 121.17 1,964 19.25 0.0106
2014-12-11 2014-09-30 13F/A-1 AMPHENOL SC 032095101 16,499 -1,169 -6.62 1,647 -3.29 0.0093
2014-11-13 2014-09-30 13F AMPHENOL SC 032095101 16,499 -1,169 1,647 0.0104
2014-08-13 2014-06-30 13F AMPHENOL SC 032095101 17,668 -401 -2.22 1,703 2.78 0.0105
2014-05-14 2014-03-31 13F AMPHENOL SC 032095101 18,069 -352 -1.91 1,657 0.91 0.0112
2014-02-18 2013-12-31 13F AMPHENOL SC 032095101 18,421 -645 -3.38 1,642 11.32 0.0118
2013-11-08 2013-09-30 13F AMPHENOL SC 032095101 19,066 -2,228 -10.46 1,475 -11.09 0.0120
2013-08-14 2013-06-30 13F AMPHENOL SC 032095101 21,294 21,294 1,659 0.0149
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.