Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionGuggenheim Capital Llc
Latest Disclosed Ownership26,757 shares
Latest Disclosed Value $ 3,380,747
Guggenheim Capital Llc reports 20.98% decrease in ownership of APH / Amphenol Corporation

On May 15, 2026 - Guggenheim Capital Llc filed a 13F-HR form disclosing ownership of 26,757 shares of Amphenol Corporation (US:APH) valued at $3,380,747 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 33,861 shares of Amphenol Corporation. This represents a change in shares of -20.98% during the quarter. The current value of the position is $3,714,139 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 26,757 -7,104 -20.98 3,381 -26.12 0.0131
2026-02-17 2025-12-31 13F AMPHENOL CORP CL A 032095101 33,861 2,959 9.58 4,576 19.64 0.0164
2025-11-13 2025-09-30 13F AMPHENOL CORP CL A 032095101 30,902 1,343 4.54 3,824 31.05 0.0278
2025-08-13 2025-06-30 13F AMPHENOL CORP CL A 032095101 29,559 2,430 8.96 2,919 64.02 0.0232
2025-05-14 2025-03-31 13F AMPHENOL CORP CL A 032095101 27,129 -6,624 -19.62 1,779 -24.10 0.0163
2025-02-13 2024-12-31 13F AMPHENOL CORP CL A 032095101 33,753 -34,269 -50.38 2,344 -47.11 0.0190
2024-11-13 2024-09-30 13F AMPHENOL CORP CL A 032095101 68,022 -5,060 -6.92 4,432 -9.97 0.0310
2024-08-14 2024-06-30 13F AMPHENOL CORP CL A 032095101 73,082 27,144 59.09 4,924 -7.08 0.0349
2024-05-14 2024-03-31 13F AMPHENOL CORP CL A 032095101 45,938 -8,436 -15.51 5,299 -1.71 0.0373
2024-02-14 2023-12-31 13F AMPHENOL CORP CL A 032095101 54,374 5,251 10.69 5,390 30.67 0.0407
2023-11-14 2023-09-30 13F AMPHENOL CORP CL A 032095101 49,123 -2,245 -4.37 4,126 -5.45 0.0355
2023-08-11 2023-06-30 13F AMPHENOL CORP CL A 032095101 51,368 -2,223 -4.15 4,364 -0.37 0.0343
2023-05-11 2023-03-31 13F AMPHENOL CORP CL A 032095101 53,591 27,177 102.89 4,379 117.75 0.0369
2023-02-14 2022-12-31 13F AMPHENOL CORP CL A 032095101 26,414 4,029 18.00 2,011 34.16 0.0177
2022-11-14 2022-09-30 13F AMPHENOL CORP CL A 032095101 22,385 -12,431 -35.70 1,499 -33.14 0.0137
2022-08-15 2022-06-30 13F AMPHENOL CORP CL A 032095101 34,816 -15,641 -31.00 2,242 -41.03 0.0177
2022-05-16 2022-03-31 13F AMPHENOL CORP CL A 032095101 50,457 -2,313 -4.38 3,802 -17.60 0.0229
2022-02-14 2021-12-31 13F AMPHENOL CORP CL A 032095101 52,770 125 0.24 4,614 19.69 0.0241
2021-11-15 2021-09-30 13F AMPHENOL CORP CL A 032095101 52,645 -47,327 -47.34 3,855 -43.63 0.0231
2021-08-13 2021-06-30 13F AMPHENOL CORP CL A 032095101 99,972 -3,392 -3.28 6,839 0.31 0.0403
2021-05-13 2021-03-31 13F AMPHENOL CORP CL A 032095101 103,364 46,616 82.15 6,818 -8.13 0.0448
2021-02-16 2020-12-31 13F AMPHENOL CORP CL A 032095101 56,748 -4,759 -7.74 7,421 11.44 0.0465
2020-11-13 2020-09-30 13F AMPHENOL CORP CL A 032095101 61,507 32,164 109.61 6,659 136.81 0.0482
2020-08-14 2020-06-30 13F AMPHENOL CORP CL A 032095101 29,343 -12,556 -29.97 2,812 -7.92 0.0218
2020-06-02 2020-03-31 13F AMPHENOL CORP CL A 032095101 41,899 -10,624 -20.23 3,054 -46.27 0.0308
2020-02-20 2019-12-31 13F/A-1 AMPHENOL CORP CL A 032095101 52,523 2,482 4.96 5,684 17.71 0.0427
2020-02-14 2019-12-31 13F AMPHENOL CORP CL A 032095101 52,523 2,482 5,684 33,687.9318
2020-02-20 2019-09-30 13F/A-1 AMPHENOL CORP CL A 032095101 50,041 -5,685 -10.20 4,829 -9.69 0.0386
2019-11-14 2019-09-30 13F AMPHENOL CORP CL A 032095101 50,041 -5,685 4,829 35,388.3285
2019-08-14 2019-06-30 13F AMPHENOL CORP CL A 032095101 55,726 4,773 9.37 5,347 11.09 0.0435
2019-05-15 2019-03-31 13F AMPHENOL CORP CL A 032095101 50,953 -366 -0.71 4,813 15.75 0.0392
2019-02-14 2018-12-31 13F AMPHENOL CORP CL A 032095101 51,319 -17,950 -25.91 4,158 -36.16 0.0352
2018-11-14 2018-09-30 13F AMPHENOL CORP CL A 032095101 69,269 -3,426 -4.71 6,513 2.83 0.0424
2018-08-14 2018-06-30 13F AMPHENOL CORP CL A 032095101 72,695 -777,455 -91.45 6,334 -91.35 0.0423
2018-05-15 2018-03-31 13F AMPHENOL CORP CL A 032095101 850,150 14,693 1.76 73,220 -0.18 0.1786
2018-02-14 2017-12-31 13F AMPHENOL CORP CL A 032095101 835,457 -67,512 -7.48 73,353 -4.02 0.1738
2017-11-14 2017-09-30 13F AMPHENOL CORP CL A 032095101 902,969 -64,041 -6.62 76,426 7.06 0.1795
2017-08-14 2017-06-30 13F AMPHENOL CORP CL A 032095101 967,010 -47,018 -4.64 71,385 -1.09 0.1891
2017-05-15 2017-03-31 13F AMPHENOL CORP CL A 032095101 1,014,028 6,345 0.63 72,169 6.57 0.1956
2017-02-14 2016-12-31 13F AMPHENOL CORP CL A 032095101 1,007,683 175,398 21.07 67,717 25.33 0.1937
2016-11-14 2016-09-30 13F AMPHENOL CORP CL A 032095101 832,285 -7,154 -0.85 54,032 12.27 0.1681
2016-08-15 2016-06-30 13F AMPHENOL CORP CL A 032095101 839,439 55,753 7.11 48,125 6.21 0.1511
2016-05-16 2016-03-31 13F AMPHENOL CORP CL A 032095101 783,686 -132,246 -14.44 45,313 -5.28 0.1430
2016-02-16 2015-12-31 13F AMPHENOL CORP CL A 032095101 915,932 -310,211 -25.30 47,840 -23.44 0.1392
2015-11-16 2015-09-30 13F AMPHENOL CORP CL A 032095101 1,226,143 -96,867 -7.32 62,484 -18.53 0.1923
2015-08-14 2015-06-30 13F AMPHENOL CORP CL A 032095101 1,323,010 -3,784 -0.29 76,695 -1.91 0.1893
2015-05-18 2015-03-31 13F/A-1 AMPHENOL CORP CL A 032095101 1,326,794 -516,339 -28.01 78,188 -21.17 0.1851
2015-05-15 2015-03-31 13F AMPHENOL CORP CL A 032095101 1,326,794 78,188
2015-02-17 2014-12-31 13F AMPHENOL CORP CL A 032095101 1,843,133 1,247,310 209.34 99,180 66.69 0.2488
2014-11-14 2014-09-30 13F AMPHENOL CORP CL A 032095101 595,823 -163,747 -21.56 59,498 -18.69 0.1435
2014-08-14 2014-06-30 13F AMPHENOL CORP CL A 032095101 759,570 31,858 4.38 73,177 9.72 0.1851
2014-05-16 2014-03-31 13F AMPHENOL CORP CL A 032095101 727,712 461,722 173.59 66,694 181.18 0.1897
2014-02-14 2013-12-31 13F AMPHENOL CORP CL A 032095101 265,990 -16,957 -5.99 23,719 8.34 0.0721
2013-11-14 2013-09-30 13F AMPHENOL CORP CL A 032095101 282,947 28,244 11.09 21,893 10.28 0.0786
2013-08-22 2013-06-30 13F/A-1 AMPHENOL CORP CL A 032095101 254,703 254,703 19,852 0.0835
2013-08-14 2013-06-30 13F AMPHENOL CORP CL A 032095101 254,703 19,852 0.0837
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.