Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionFayez Sarofim & Co
Latest Disclosed Ownership21,244 shares
Latest Disclosed Value $ 2,684,179
Fayez Sarofim & Co reports 0.06% increase in ownership of APH / Amphenol Corporation

On May 15, 2026 - Fayez Sarofim & Co filed a 13F-HR form disclosing ownership of 21,244 shares of Amphenol Corporation (US:APH) valued at $2,684,179 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 21,231 shares of Amphenol Corporation. This represents a change in shares of 0.06% during the quarter. The current value of the position is $2,948,880 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 CORP-CL A Common Stock 032095101 21,244 13 0.06 2,684 -6.45 0.0022
2026-02-13 2025-12-31 13F AMPHENOL CORP-CL A Common Stock 032095101 21,231 0 0.00 2,869 9.21 0.0069
2025-11-14 2025-09-30 13F AMPHENOL CORP NEW CL A CL A 032095101 21,231 0 0.00 2,627 25.33 0.0061
2025-08-14 2025-06-30 13F AMPHENOL CORP CL A 032095101 21,231 -420 -1.94 2,097 47.61 0.0050
2025-05-12 2025-03-31 13F AMPHENOL CORP CL A 032095101 21,651 -745 -3.33 1,420 -8.68 0.0035
2025-02-14 2024-12-31 13F AMPHENOL CORP CL A 032095101 22,396 -1,000 -4.27 1,555 2.03 0.0038
2024-11-14 2024-09-30 13F AMPHENOL CORP CL A 032095101 23,396 0 0.00 1,524 -3.30 0.0039
2024-08-14 2024-06-30 13F AMPHENOL CORP CL A 032095101 23,396 11,698 100.00 1,576 16.83 0.0043
2024-05-14 2024-03-31 13F AMPHENOL CORP CL A 032095101 11,698 0 0.00 1,349 9.59 0.0040
2024-02-15 2023-12-31 13F AMPHENOLCORPNEW CLA 032095101 11,698 0 0.00 1,232 25.36 0.0038
2023-11-15 2023-09-30 13F AMPHENOL CORP CL A 032095101 11,698 -150 -1.27 983 -2.39 0.0033
2023-08-14 2023-06-30 13F AMPHENOL CORP CL A 032095101 11,848 0 0.00 1,006 3.93 0.0035
2023-05-11 2023-03-31 13F AMPHENOL CORP CL A 032095101 11,848 -4,556 -27.77 968 -22.50 0.0034
2023-02-13 2022-12-31 13F AMPHENOL CORP CL A 032095101 16,404 0 0.00 1,249 13.75 0.0046
2022-11-15 2022-09-30 13F AMPHENOL CORP CL A 032095101 16,404 0 0.00 1,098 3.98 0.0043
2022-08-12 2022-06-30 13F AMPHENOL CORP CL A 032095101 16,404 -600 -3.53 1,056 -17.56 0.0039
2022-05-16 2022-03-31 13F AMPHENOL CORP CL A 032095101 17,004 -64 -0.37 1,281 -14.20 0.0041
2022-02-11 2021-12-31 13F AMPHENOL CORP CL A 032095101 17,068 0 0.00 1,493 19.44 0.0045
2021-11-15 2021-09-30 13F AMPHENOL CORP CL A 032095101 17,068 0 0.00 1,250 7.02 0.0041
2021-08-13 2021-06-30 13F AmphenolCorp COMMON 032095101 17,068 64 0.38 1,168 4.10 0.0039
2021-05-13 2021-03-31 13F AmphenolCorp COMMON 032095101 17,004 8,352 96.53 1,122 -0.80 0.0041
2021-02-11 2020-12-31 13F AmphenolCorp COMMON 032095101 8,652 0 0.00 1,131 20.70 0.0043
2020-11-13 2020-09-30 13F AmphenolCorp COMMON 032095101 8,652 -536 -5.83 937 6.48 0.0040
2020-08-11 2020-06-30 13F AmphenolCorp COMMON 032095101 9,188 94 1.03 880 32.73 0.0041
2020-05-12 2020-03-31 13F AmphenolCorp COMMON 032095101 9,094 -75 -0.82 663 -33.17 0.0041
2020-02-14 2019-12-31 13F AmphenolCorp COMMON 032095101 9,169 375 4.26 992 16.84 0.0048
2019-11-13 2019-09-30 13F AmphenolCorp COMMON 032095101 8,794 0 0.00 849 0.59 0.0044
2019-08-09 2019-06-30 13F AmphenolCorp COMMON 032095101 8,794 0 0.00 844 1.56 0.0044
2019-05-14 2019-03-31 13F AmphenolCorp COMMON 032095101 8,794 610 7.45 831 25.34 0.0044
2019-02-13 2018-12-31 13F AmphenolCorp COMMON 032095101 8,184 1,290 18.71 663 2.31 0.0040
2018-11-14 2018-09-30 13F AmphenolCorp COMMON 032095101 6,894 0 0.00 648 7.82 0.0034
2018-08-14 2018-06-30 13F AmphenolCorp COMMON 032095101 6,894 -3,030 -30.53 601 -29.71 0.0032
2018-05-10 2018-03-31 13F AmphenolCorp COMMON 032095101 9,924 0 0.00 855 -1.84 0.0046
2018-02-13 2017-12-31 13F AmphenolCorp COMMON 032095101 9,924 3,124 45.94 871 51.22 0.0045
2017-11-08 2017-09-30 13F AmphenolCorp COMMON 032095101 6,800 0 0.00 576 14.74 0.0030
2017-08-11 2017-06-30 13F AmphenolCorp COMMON 032095101 6,800 0 0.00 502 3.72 0.0027
2017-05-12 2017-03-31 13F AmphenolCorp COMMON 032095101 6,800 0 0.00 484 5.91 0.0026
2017-02-14 2016-12-31 13F AmphenolCorp COMMON 032095101 6,800 0 0.00 457 3.63 0.0025
2016-11-21 2016-09-30 13F/A-1 AmphenolCorp COMMON 032095101 6,800 0 0.00 441 13.08 0.0024
2016-11-14 2016-09-30 13F AmphenolCorp COMMON 032095101 6,800 441
2016-08-10 2016-06-30 13F AmphenolCorp COMMON 032095101 6,800 0 0.00 390 -0.76 0.0021
2016-05-13 2016-03-31 13F AmphenolCorp COMMON 032095101 6,800 -200 -2.86 393 7.38 0.0023
2016-02-12 2015-12-31 13F AmphenolCorp COMMON 032095101 7,000 0 0.00 366 2.52 0.0021
2015-11-12 2015-09-30 13F AmphenolCorp COMMON 032095101 7,000 0 0.00 357 -12.07 0.0021
2015-08-13 2015-06-30 13F AmphenolCorp COMMON 032095101 7,000 0 0.00 406 -1.69 0.0021
2015-05-12 2015-03-31 13F AmphenolCorp COMMON 032095101 7,000 1,592 29.44 413 41.92 0.0020
2015-02-13 2014-12-31 13F AmphenolCorp COMMON 032095101 5,408 2,704 100.00 291 7.78 0.0014
2014-11-14 2014-09-30 13F AmphenolCorp COMMON 032095101 2,704 -796 -22.74 270 -19.88 0.0013
2014-08-14 2014-06-30 13F AmphenolCorp COMMON 032095101 3,500 3,500 337 0.0015
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.