Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionDaiwa Securities Group Inc.
Latest Disclosed Ownership253,623 shares
Latest Disclosed Value $ 32,045,266
Daiwa Securities Group Inc. reports 3.23% decrease in ownership of APH / Amphenol Corporation

On May 13, 2026 - Daiwa Securities Group Inc. filed a 13F-HR form disclosing ownership of 253,623 shares of Amphenol Corporation (US:APH) valued at $32,045,266 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 262,094 shares of Amphenol Corporation. This represents a change in shares of -3.23% during the quarter. The current value of the position is $37,439,827 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)
2026-05-13 2026-03-31 13F AMPHENOL CL A 032095101 253,623 -8,471 -3.23 32,045 91,457.14 0.0541
2026-02-10 2025-12-31 13F AMPHENOL CORP CL A 032095101 262,094 -6,051 -2.26 35 6.06 0.1132
2025-11-14 2025-09-30 13F AMPHENOL CORP CL A 032095101 268,145 45,853 20.63 33 57.14 0.1120
2025-08-14 2025-06-30 13F AMPHENOL CORP CL A 032095101 222,292 -96,432 -30.26 22 5.00 0.0810
2025-05-13 2025-03-31 13F AMPHENOL CORP CL A 032095101 318,724 27,708 9.52 21 0.00 0.0884
2025-02-07 2024-12-31 13F AMPHENOL CORP CL A 032095101 291,016 22,797 8.50 20 17.65 0.0903
2024-11-12 2024-09-30 13F AMPHENOL CORP CL A 032095101 268,219 90,450 50.88 17 54.55 0.0807
2024-08-07 2024-06-30 13F AMPHENOL CL A 032095101 177,769 100,644 130.49 12 37.50 0.0637
2024-05-02 2024-03-31 13F AMPHENOL CL A 032095101 77,125 9,499 14.05 9 33.33 0.0502
2024-01-31 2023-12-31 13F AMPHENOL CL A 032095101 67,626 4,553 7.22 7 20.00 0.0417
2023-11-01 2023-09-30 13F AMPHENOL CL A 032095101 63,073 7,075 12.63 5 25.00 0.0377
2023-07-31 2023-06-30 13F AMPHENOL CL A 032095101 55,998 1,652 3.04 5 0.00 0.0315
2023-05-02 2023-03-31 13F AMPHENOL CL A 032095101 54,346 4,721 9.51 4 33.33 0.0309
2023-02-06 2022-12-31 13F AMPHENOL CL A 032095101 49,625 3,245 7.00 4 -99.90 0.0290
2022-11-02 2022-09-30 13F AMPHENOL CL A 032095101 46,380 1,865 4.19 3,106 8.37 0.0258
2022-08-09 2022-06-30 13F AMPHENOL CL A 032095101 44,515 3,178 7.69 2,866 -7.99 0.0219
2022-04-29 2022-03-31 13F AMPHENOL CL A 032095101 41,337 2,996 7.81 3,115 -7.10 0.0144
2022-02-03 2021-12-31 13F AMPHENOL CORP CL A 032095101 38,341 3,498 10.04 3,353 31.39 0.0197
2021-11-05 2021-09-30 13F AMPHENOL CL A 032095101 34,843 1,601 4.82 2,552 12.23 0.0168
2021-08-06 2021-06-30 13F AMPHENOL CL A 032095101 33,242 2,808 9.23 2,274 13.25 0.0153
2021-05-03 2021-03-31 13F AMPHENOL CL A 032095101 30,434 15,202 99.80 2,008 0.80 0.0149
2021-02-04 2020-12-31 13F AMPHENOL CL A 032095101 15,232 238 1.59 1,992 22.74 0.0154
2020-11-02 2020-09-30 13F AMPHENOL CL A 032095101 14,994 917 6.51 1,623 58.19 0.0147
2020-08-11 2020-06-30 13F AMPHENOL CL A 032095101 14,077 0 0.00 1,026 0.00 0.0216
2020-05-14 2020-03-31 13F AMPHENOL CL A 032095101 14,077 1,479 11.74 1,026 -24.72 0.0106
2020-01-31 2019-12-31 13F AMPHENOL CL A 032095101 12,598 0 0.00 1,363 12.09 0.0112
2019-11-04 2019-09-30 13F AMPHENOL CL A 032095101 12,598 611 5.10 1,216 5.74 0.0103
2019-07-24 2019-06-30 13F AMPHENOL CL A 032095101 11,987 0 0.00 1,150 1.59 0.0102
2019-04-26 2019-03-31 13F AMPHENOL CL A 032095101 11,987 400 3.45 1,132 20.55 0.0099
2019-02-05 2018-12-31 13F AMPHENOL CL A 032095101 11,587 788 7.30 939 -7.49 0.0090
2018-11-01 2018-09-30 13F AMPHENOL CL A 032095101 10,799 630 6.20 1,015 14.56 0.0085
2018-07-30 2018-06-30 13F AMPHENOL CL A 032095101 10,169 0 0.00 886 1.14 0.0070
2018-05-02 2018-03-31 13F AMPHENOL CL A 032095101 10,169 -34,159 -77.06 876 -77.49 0.0070
2018-02-06 2017-12-31 13F AMPHENOL CL A 032095101 44,328 29,795 205.02 3,892 216.42 0.0275
2017-11-02 2017-09-30 13F AMPHENOL CL A 032095101 14,533 283 1.99 1,230 16.92 0.0084
2017-07-28 2017-06-30 13F AMPHENOL CL A 032095101 14,250 -15,900 -52.74 1,052 -50.98 0.0068
2017-05-02 2017-03-31 13F AMPHENOL CL A 032095101 30,150 -6,850 -18.51 2,146 -13.68 0.0135
2017-02-01 2016-12-31 13F AMPHENOL CL A 032095101 37,000 29,600 400.00 2,486 417.92 0.0160
2017-01-10 2016-09-30 13F/A-1 AMPHENOL CL A 032095101 7,400 0 0.00 480 13.21 0.0029
2016-11-04 2016-09-30 13F AMPHENOL CL A 032095101 7,400 480
2016-07-25 2016-06-30 13F AMPHENOL CL A 032095101 7,400 300 4.23 424 3.16 0.0025
2016-05-12 2016-03-31 13F AMPHENOL CL A 032095101 7,100 0 0.00 411 10.78 0.0026
2016-02-04 2015-12-31 13F AMPHENOL CL A 032095101 7,100 0 0.00 371 2.49 0.0025
2015-11-10 2015-09-30 13F AMPHENOL CL A 032095101 7,100 0 0.00 362 -12.14 0.0026
2015-08-05 2015-06-30 13F AMPHENOL CL A 032095101 7,100 -300 -4.05 412 -5.50 0.0029
2015-05-12 2015-03-31 13F AMPHENOL CL A 032095101 7,400 -300 -3.90 436 5.31 0.0029
2015-02-13 2014-12-31 13F AMPHENOL CL A 032095101 7,700 3,400 79.07 414 -3.50 0.0029
2014-11-12 2014-09-30 13F AMPHENOL CL A 032095101 4,300 0 0.00 429 3.62 0.0033
2014-08-13 2014-06-30 13F/A-1 AMPHENOL CL A 032095101 4,300 0 414 0.0031
2014-08-13 2014-06-30 13F/A-2 AMPHENOL CL A 032095101 4,300 0 0.00 414 5.08 0.0089
2014-08-13 2014-06-30 13F AMPHENOL CL A 032095101 4,300 414
2014-05-14 2014-03-31 13F/A-1 AMPHENOL CL A 032095101 4,300 -200 394 0.0031
2014-05-15 2014-03-31 13F/A-2 AMPHENOL CL A 032095101 4,300 -200 -4.44 394 -1.75 0.0031
2014-05-13 2014-03-31 13F AMPHENOL CL A 032095101 4,300 394
2014-02-13 2013-12-31 13F AMPHENOL CL A 032095101 4,500 -500 -10.00 401 3.62 0.0034
2013-11-14 2013-09-30 13F AMPHENOL CL A 032095101 5,000 0 0.00 387 -0.77 0.0031
2013-08-16 2013-06-30 13F/A-1 AMPHENOL CL A 032095101 5,000 5,000 390 0.0030
2013-08-13 2013-06-30 13F AMPHENOL CL A 032095101 5,000 390
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.