Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionSegall Bryant & Hamill, Llc
Latest Disclosed Ownership381,425 shares
Latest Disclosed Value $ 51,316,936
Segall Bryant & Hamill, Llc ownership in APH / Amphenol Corporation

On May 15, 2026 - Segall Bryant & Hamill, Llc filed a 13F-HR form disclosing ownership of 381,425 shares of Amphenol Corporation (US:APH) valued at $48,193,049 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 14, 2024 disclosing 0 shares of Amphenol Corporation. The current value of the position is $52,945,604 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 AMPHENOL CL A 032095101 381,425 381,425 51,317 0.8314
2024-02-14 2023-12-31 13F AMPHENOL CORP CL A - COM 032095101 0 -123,926 -100.00 0 -100.00
2023-11-09 2023-09-30 13F AMPHENOL CORP CL A - COM 032095101 123,926 -2,248 -1.78 10,409 -2.89 0.1204
2023-08-14 2023-06-30 13F AMPHENOL CORP CL A - COM 032095101 126,174 -4,221 -3.24 10,718 107,080.00 0.1121
2023-05-15 2023-03-31 13F AMPHENOL CORP CL A - COM 032095101 130,395 -2,420 -1.82 11 -99.90 0.1149
2023-02-14 2022-12-31 13F AMPHENOL CORP CL A - COM 032095101 132,815 -1,527 -1.14 10,112 12.44 0.1129
2022-11-14 2022-09-30 13F AMPHENOL CORP COM 032095101 134,342 906 0.68 8,993 4.74 0.1071
2022-08-15 2022-06-30 13F AMPHENOL CORP CL A - COM 032095101 133,436 -5,219 -3.76 8,586 -17.89 0.0966
2022-05-13 2022-03-31 13F AMPHENOL CORP CL A - COM 032095101 138,655 -53,867 -27.98 10,457 -37.86 0.1000
2022-02-14 2021-12-31 13F AMPHENOL CORP CL A - COM 032095101 192,522 -49 -0.03 16,829 19.29 0.1555
2021-12-30 2021-09-30 13F/A-1 AMPHENOL CORP CL A - COM 032095101 192,571 -2,648 -1.36 14,108 5.63 0.1349
2021-11-03 2021-09-30 13F AMPHENOL CORP CL A - COM 032095101 192,571 -2,648 14,108 0.1365
2021-08-12 2021-06-30 13F AMPHENOL CORP CL A - COM 032095101 195,219 -436 -0.22 13,356 3.43 0.1296
2021-05-13 2021-03-31 13F AMPHENOL CORP CL A - COM 032095101 195,655 91,726 88.26 12,913 -5.06 0.1276
2021-02-12 2020-12-31 13F AMPHENOL CORP CL A - COM 032095101 103,929 -1,987 -1.88 13,601 18.61 0.1513
2020-11-13 2020-09-30 13F AMPHENOL CORP CL A - COM 032095101 105,916 457 0.43 11,467 13.37 0.1557
2020-08-14 2020-06-30 13F AMPHENOL CORP CL A - COM 032095101 105,459 -10,325 -8.92 10,115 19.99 0.1700
2020-05-14 2020-03-31 13F AMPHENOL CORP CL A - COM 032095101 115,784 -22,207 -16.09 8,430 -43.54 0.1712
2020-02-11 2019-12-31 13F AMPHENOL CORP CL A - COM 032095101 137,991 -115,098 -45.48 14,932 -38.88 0.2316
2019-11-12 2019-09-30 13F AMPHENOL CORP CL A - COM 032095101 253,089 1,499 0.60 24,430 1.18 0.3793
2019-08-14 2019-06-30 13F Amphenol Corp Cl A - COM 032095101 251,590 5,340 2.17 24,145 3.82 0.3648
2019-05-15 2019-03-31 13F Amphenol Corp Cl A - COM 032095101 246,250 30,885 14.34 23,256 33.28 0.3611
2019-02-14 2018-12-31 13F Amphenol Corp Cl A - COM 032095101 215,365 777 0.36 17,449 -13.52 0.3007
2018-11-14 2018-09-30 13F Amphenol Corp Cl A - COM 032095101 214,588 -27,647 -11.41 20,176 -4.43 0.2971
2018-08-08 2018-06-30 13F Amphenol Corp Cl A - COM 032095101 242,235 -32,670 -11.88 21,111 -10.84 0.3217
2018-05-15 2018-03-31 13F Amphenol Corp Cl A - COM 032095101 274,905 -38,523 -12.29 23,678 -13.96 0.5484
2018-02-15 2017-12-31 13F Amphenol Corp Cl A - COM 032095101 313,428 -7,144 -2.23 27,519 1.42 0.6058
2017-11-14 2017-09-30 13F Amphenol Corp Cl A - -Common Stock 032095101 320,572 -16,996 -5.03 27,133 8.88 0.6302
2017-08-14 2017-06-30 13F Amphenol Corp Cl A - -Common Stock 032095101 337,568 -5,592 -1.63 24,919 2.03 0.5871
2017-05-12 2017-03-31 13F Amphenol Corp Cl A - -Common Stock 032095101 343,160 15,856 4.84 24,423 11.04 0.5902
2017-02-14 2016-12-31 13F Amphenol Corp Cl A - -Common Stock 032095101 327,304 -3,207 -0.97 21,995 2.51 0.5521
2016-11-14 2016-09-30 13F Amphenol Corp Cl A - -Common Stock 032095101 330,511 27,266 8.99 21,457 23.42 0.5505
2016-08-10 2016-06-30 13F Amphenol Corp Cl A - -Common Stock 032095101 303,245 4,045 1.35 17,385 0.49 0.4582
2016-05-12 2016-03-31 13F Amphenol Corp Cl A - -Common Stock 032095101 299,200 12,543 4.38 17,300 15.55 0.4283
2016-02-12 2015-12-31 13F Amphenol Corp Cl A - -Common Stock 032095101 286,657 16,775 6.22 14,972 8.86 0.3599
2015-11-12 2015-09-30 13F Amphenol Corp Cl A - -Common Stock 032095101 269,882 46,976 21.07 13,753 6.43 0.3350
2015-08-12 2015-06-30 13F Amphenol Corp Cl A - -Common Stock 032095101 222,906 211,575 1,867.22 12,922 1,834.43 0.2892
2015-05-14 2015-03-31 13F Amphenol Corp Cl A - -Common Stock 032095101 11,331 5,090 81.56 668 98.81 0.0150
2015-02-12 2014-12-31 13F Amphenol Corp Cl A - -Common Stock 032095101 6,241 6,241 336 0.0076
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.