Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionCoastline Trust Co
Latest Disclosed Ownership5,066 shares
Latest Disclosed Value $ 640,090
Coastline Trust Co reports 25.39% decrease in ownership of APH / Amphenol Corporation

On April 3, 2026 - Coastline Trust Co filed a 13F-HR form disclosing ownership of 5,066 shares of Amphenol Corporation (US:APH) valued at $640,089 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 5, 2026 disclosing 6,790 shares of Amphenol Corporation. This represents a change in shares of -25.39% during the quarter. The current value of the position is $747,843 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.

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)
2026-04-03 2026-03-31 13F AMPHENOL CL A 032095101 5,066 -1,724 -25.39 640 -30.21 0.0607
2026-01-05 2025-12-31 13F AMPHENOL CORP CL A 032095101 6,790 0 0.00 918 9.17 0.0863
2025-10-21 2025-09-30 13F AMPHENOL CORP CL A 032095101 6,790 0 0.00 840 25.37 0.0902
2025-07-17 2025-06-30 13F AMPHENOL CORP CL A 032095101 6,790 0 0.00 671 50.56 0.0768
2025-04-28 2025-03-31 13F AMPHENOL CORP CL A 032095101 6,790 -100 -1.45 445 -6.90 0.0554
2025-02-13 2024-12-31 13F Amphenol CL A 032095101 6,890 0 0.00 479 6.70 0.0560
2024-11-06 2024-09-30 13F Amphenol CL A 032095101 6,890 -50 -0.72 449 -4.07 0.0528
2024-07-15 2024-06-30 13F AMPHENOL COMMON STOCK 032095101 6,940 3,470 100.00 468 16.75 0.0547
2024-04-26 2024-03-31 13F AMPHENOL COMMON STOCK 032095101 3,470 -150 -4.14 400 11.73 0.0484
2024-01-23 2023-12-31 13F AMPHENOL COMMON STOCK 032095101 3,620 0 0.00 359 17.76 0.0477
2023-10-18 2023-09-30 13F AMPHENOL COMMON STOCK 032095101 3,620 -345 -8.70 304 -9.52 0.0448
2023-08-07 2023-06-30 13F AMPHENOL COMMON STOCK 032095101 3,965 -2,950 -42.66 337 -40.53 0.0472
2023-05-31 2023-03-31 13F/A-1 AMPHENOL COMMON STOCK 032095101 6,915 700 11.26 565 19.45 0.0837
2023-04-12 2023-03-31 13F AMPHENOL COMMON STOCK 032095101 6,215 0 473 0.0387
2023-02-09 2022-12-31 13F AMPHENOL COMMON STOCK 032095101 6,215 803 14.84 473 30.30 0.0705
2022-11-03 2022-09-30 13F AMPHENOL COMMON STOCK 032095101 5,412 -9,860 -64.56 363 -63.07 0.0581
2022-07-22 2022-06-30 13F AMPHENOL COMMON STOCK 032095101 15,272 -730 -4.56 983 -18.49 0.1454
2022-05-04 2022-03-31 13F AMPHENOL COMMON STOCK 032095101 16,002 -120 -0.74 1,206 -14.47 0.1465
2022-02-10 2021-12-31 13F AMPHENOL COMMON STOCK 032095101 16,122 -160 -0.98 1,410 18.29 0.1608
2021-11-09 2021-09-30 13F AMPHENOL COMMON STOCK 032095101 16,282 -60 -0.37 1,192 6.62 0.1483
2021-08-10 2021-06-30 13F AMPHENOL COMMON STOCK 032095101 16,342 190 1.18 1,118 4.98 0.1384
2021-05-10 2021-03-31 13F AMPHENOL COMMON STOCK 032095101 16,152 7,961 97.19 1,065 -0.56 0.1373
2021-02-12 2020-12-31 13F AMPHENOL COMMON STOCK 032095101 8,191 395 5.07 1,071 26.90 0.1427
2020-10-15 2020-09-30 13F AMPHENOL COMMON STOCK 032095101 7,796 -375 -4.59 844 7.79 0.1269
2020-08-07 2020-06-30 13F AMPHENOL COMMON STOCK 032095101 8,171 -290 -3.43 783 26.90 0.1236
2020-06-10 2020-03-31 13F AMPHENOL COMMON STOCK 032095101 8,461 -440 -4.94 617 -35.93 0.1114
2020-01-15 2019-12-31 13F AMPHENOL COMMON STOCK 032095101 8,901 0 0.00 963 12.11 0.1335
2019-10-18 2019-09-30 13F AMPHENOL COMMON STOCK 032095101 8,901 250 2.89 859 3.49 0.1264
2019-07-18 2019-06-30 13F AMPHENOL COMMON STOCK 032095101 8,651 0 0.00 830 1.59 0.1207
2019-04-25 2019-03-31 13F AMPHENOL COMMON STOCK 032095101 8,651 555 6.86 817 24.54 0.1220
2019-01-15 2018-12-31 13F AMPHENOL COMMON STOCK 032095101 8,096 0 0.00 656 -13.80 0.1131
2018-10-17 2018-09-30 13F AMPHENOL COMMON STOCK 032095101 8,096 -55 -0.67 761 7.03 0.1091
2018-07-27 2018-06-30 13F AMPHENOL COMMON STOCK 032095101 8,151 335 4.29 711 5.65 0.1072
2018-04-16 2018-03-31 13F AMPHENOL COMMON STOCK 032095101 7,816 3,795 94.38 673 90.65 0.1034
2018-01-17 2017-12-31 13F AMPHENOL COMMON STOCK 032095101 4,021 -30 -0.74 353 2.92 0.0531
2017-11-17 2017-09-30 13F AMPHENOL COMMON STOCK 032095101 4,051 -475 -10.49 343 2.39 0.0598
2017-08-10 2017-06-30 13F AMPHENOL COMMON STOCK 032095101 4,526 0 0.00 335 4.04 0.0607
2017-04-19 2017-03-31 13F AMPHENOL COMMON STOCK 032095101 4,526 -320 -6.60 322 -1.23 0.0601
2017-01-17 2016-12-31 13F AMPHENOL COMMON STOCK 032095101 4,846 165 3.52 326 7.24 0.0640
2016-10-20 2016-09-30 13F AMPHENOL COMMON STOCK 032095101 4,681 -140 -2.90 304 10.14 0.0595
2016-07-18 2016-06-30 13F AMPHENOL COMMON STOCK 032095101 4,821 -45 -0.92 276 -1.78 0.0558
2016-04-15 2016-03-31 13F AMPHENOL COMMON STOCK 032095101 4,866 0 0.00 281 10.63 0.0599
2016-01-15 2015-12-31 13F AMPHENOL COMMON STOCK 032095101 4,866 0 0.00 254 2.42 0.0558
2015-10-30 2015-09-30 13F AMPHENOL COMMON STOCK 032095101 4,866 0 0.00 248 -12.06 0.0565
2015-07-22 2015-06-30 13F AMPHENOL COMMON STOCK 032095101 4,866 -230 -4.51 282 -6.31 0.0590
2015-04-17 2015-03-31 13F AMPHENOL COMMON STOCK 032095101 5,096 -464 -8.35 301 0.33 0.0618
2015-01-21 2014-12-31 13F AMPHENOL COMMON STOCK 032095101 5,560 2,730 96.47 300 6.01 0.0627
2014-10-20 2014-09-30 13F AMPHENOL COMMON STOCK 032095101 2,830 -345 -10.87 283 -7.52 0.0742
2014-07-23 2014-06-30 13F AMPHENOL COMMON STOCK 032095101 3,175 -80 -2.46 306 2.68 0.0794
2014-05-09 2014-03-31 13F AMPHENOL COMMON STOCK 032095101 3,255 -65 -1.96 298 0.68 0.0792
2014-02-14 2013-12-31 13F AMPHENOL COMMON STOCK 032095101 3,320 0 0.00 296 15.18 0.0804
2013-11-12 2013-09-30 13F AMPHENOL COMMON STOCK 032095101 3,320 0 0.00 257 -0.39 0.0756
2013-08-06 2013-06-30 13F AMPHENOL COMMON STOCK 032095101 3,320 3,320 258 0.0795
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.