安費諾公司
MX ˙ BMV ˙ US0320951017
SecurityMX:APH / Amphenol Corporation
InstitutionMAI Capital Management
Latest Disclosed Ownership49,624 shares
Latest Disclosed Value $ 6,269,937
MAI Capital Management reports 1.07% increase in ownership of APH / Amphenol Corporation

On May 15, 2026 - MAI Capital Management filed a 13F-HR form disclosing ownership of 49,624 shares of Amphenol Corporation (MX:APH) valued at $6,269,937 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 49,099 shares of Amphenol Corporation. This represents a change in shares of 1.07% during the quarter.

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 49,624 525 1.07 6,270 -5.52 0.0354
2026-02-13 2025-12-31 13F AMPHENOL CORP CL A 032095101 49,099 9,410 23.71 6,635 35.10 0.0382
2025-11-10 2025-09-30 13F AMPHENOL CORP CL A 032095101 39,689 28,940 269.23 4,912 362.87 0.0306
2025-08-12 2025-06-30 13F AMPHENOL CORP CL A 032095101 10,749 6,133 132.86 1,062 251.32 0.0073
2025-05-15 2025-03-31 13F AMPHENOL CORP CL A 032095101 4,616 -1,343 -22.54 303 -26.88 0.0023
2025-02-14 2024-12-31 13F AMPHENOL CORP CL A 032095101 5,959 -770 -11.44 414 -5.71 0.0031
2024-11-07 2024-09-30 13F Amphenol CS 032095101 6,729 -4,178 -38.31 438 -40.33 0.0042
2024-08-12 2024-06-30 13F Amphenol CS 032095101 10,907 5,820 114.41 735 25.26 0.0072
2024-05-08 2024-03-31 13F Amphenol CS 032095101 5,087 1,087 27.18 587 47.98 0.0061
2024-02-09 2023-12-31 13F Amphenol CS 032095101 4,000 1,129 39.32 397 64.32 0.0052
2023-11-14 2023-09-30 13F Amphenol CS 032095101 2,871 -118 -3.95 241 -4.74 0.0036
2023-08-02 2023-06-30 13F Amphenol CS 032095101 2,989 -596 -16.62 254 -13.36 0.0037
2023-05-10 2023-03-31 13F Amphenol CS 032095101 3,585 -603 -14.40 293 -8.18 0.0046
2023-02-09 2022-12-31 13F Amphenol CS 032095101 4,188 4,188 319 0.0054
2022-11-15 2022-09-30 13F Amphenol CS 032095101 0 -3,418 -100.00 0 -100.00
2022-07-19 2022-06-30 13F Amphenol CS 032095101 3,418 52 1.54 220 -13.39 0.0042
2022-05-10 2022-03-31 13F Amphenol CS 032095101 3,366 301 9.82 254 -5.22 0.0043
2022-02-11 2021-12-31 13F Amphenol CS 032095101 3,065 -10 -0.33 268 19.11 0.0043
2021-11-12 2021-09-30 13F Amphenol CS 032095101 3,075 3,075 225 0.0043
2021-07-19 2021-06-30 13F Amphenol CS 032095101 0 -3,217 -100.00 0 -100.00
2021-05-10 2021-03-31 13F Amphenol CS 032095101 3,217 1,594 98.21 212 0.00 0.0047
2021-02-16 2020-12-31 13F Amphenol CS 032095101 1,623 1,623 212 0.0053
2020-10-26 2020-09-30 13F Amphenol CS 032095101 0 -3,381 -100.00 0 -100.00
2020-07-27 2020-06-30 13F Amphenol CS 032095101 3,381 65 1.96 324 33.88 0.0102
2020-04-16 2020-03-31 13F Amphenol CS 032095101 3,316 -62 -1.84 242 -33.88 0.0099
2020-02-03 2019-12-31 13F Amphenol CS 032095101 3,378 -1 -0.03 366 12.27 0.0119
2019-10-29 2019-09-30 13F Amphenol CS 032095101 3,379 627 22.78 326 23.48 0.0145
2019-08-15 2019-06-30 13F Amphenol CS 032095101 2,752 2,752 264 0.0119
2018-04-17 2018-03-31 13F Amphenol CS 032095101 0 -2,541 -100.00 0 -100.00
2018-01-30 2017-12-31 13F Amphenol CS 032095101 2,541 -92 -3.49 223 0.00 0.0127
2017-10-12 2017-09-30 13F Amphenol CS 032095101 2,633 2,633 223 0.0135
2017-08-07 2017-06-30 13F Amphenol CS 032095101 0 -4,435 -100.00 0 -100.00
2017-05-11 2017-03-31 13F Amphenol CS 032095101 4,435 -5,884 -57.02 316 -54.40 0.0213
2017-01-31 2016-12-31 13F Amphenol CS 032095101 10,319 0 0.00 693 3.43 0.0504
2016-10-18 2016-09-30 13F Amphenol CS 032095101 10,319 0 0.00 670 13.18 0.0505
2016-07-14 2016-06-30 13F Amphenol CS 032095101 10,319 0 0.00 592 -0.84 0.0456
2016-04-08 2016-03-31 13F Amphenol CS 032095101 10,319 0 0.00 597 10.76 0.0457
2016-01-27 2015-12-31 13F Amphenol CS 032095101 10,319 -55 -0.53 539 1.89 0.0411
2015-10-28 2015-09-30 13F Amphenol CS 032095101 10,374 0 0.00 529 -11.98 0.0400
2015-07-09 2015-06-30 13F Amphenol CS 032095101 10,374 0 0.00 601 -1.64 0.0396
2015-04-30 2015-03-31 13F Amphenol CS 032095101 10,374 -38 -0.36 611 9.11 0.0409
2015-01-20 2014-12-31 13F Amphenol CS 032095101 10,412 5,169 98.59 560 6.87 0.0393
2014-10-16 2014-09-30 13F/A-1 Amphenol CS 032095101 5,243 -406 -7.19 524 -3.68 0.0505
2014-10-16 2014-09-30 13F Amphenol COM 032095101 5,649 544
2014-07-28 2014-06-30 13F Amphenol COM 032095101 5,649 0 0.00 544 5.02 0.0523
2014-04-28 2014-03-31 13F Amphenol COM 032095101 5,649 674 13.55 518 16.67 0.0521
2014-02-06 2013-12-31 13F Amphenol COM 032095101 4,975 676 15.72 444 33.33 0.0471
2013-10-28 2013-09-30 13F Amphenol COM 032095101 4,299 0 0.00 333 -0.60 0.0433
2013-08-01 2013-06-30 13F Amphenol COM 032095101 4,299 4,299 335 0.0437
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.