암페놀 주식회사
MX ˙ BMV ˙ US0320951017
SecurityMX:APH / Amphenol Corporation
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership769,693 shares
Latest Disclosed Value $ 97,250,650
Mercer Global Advisors Inc /adv reports 11.15% decrease in ownership of APH / Amphenol Corporation

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 769,693 shares of Amphenol Corporation (MX:APH) valued at $97,250,650 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 866,313 shares of Amphenol Corporation. This represents a change in shares of -11.15% 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 769,693 -96,620 -11.15 97,251 -16.93 0.1439
2026-02-17 2025-12-31 13F AMPHENOL CORP CL A 032095101 866,313 31,191 3.73 117,073 13.28 0.1785
2025-11-14 2025-09-30 13F AMPHENOL CORP CL A 032095101 835,122 73,607 9.67 103,346 37.43 0.1725
2025-08-14 2025-06-30 13F AMPHENOL CORP CL A 032095101 761,515 38,865 5.38 75,200 58.65 0.1532
2025-05-15 2025-03-31 13F AMPHENOL CORP CL A 032095101 722,650 30,886 4.46 47,399 -1.34 0.1087
2025-02-14 2024-12-31 13F AMPHENOL CORP CL A 032095101 691,764 691,764 48,043 0.1172
2024-05-15 2024-03-31 13F AMPHENOL CL A 032095101 0 -421,368 -100.00 0 -100.00
2024-02-15 2023-12-31 13F AMPHENOL CL A 032095101 421,368 12,086 2.95 42 20.59 0.1256
2023-11-15 2023-09-30 13F/A-1 AMPHENOL CORP CL A 032095101 409,282 41,488 11.28 34 9.68 0.1305
2023-11-14 2023-09-30 13F AMPHENOL CORP CL A 032095101 409,282 41,488 34 0.1305
2023-08-14 2023-06-30 13F AMPHENOL CORP CL A 032095101 367,794 29,374 8.68 31 14.81 0.1240
2023-05-16 2023-03-31 13F AMPHENOL CORP CL A 032095101 338,420 7,925 2.40 28 8.00 0.1256
2023-02-09 2022-12-31 13F AMPHENOL CL A 032095101 330,495 16,248 5.17 25 -99.88 0.1260
2022-11-15 2022-09-30 13F AMPHENOL CL A 032095101 314,247 13,837 4.61 21,042 8.80 0.1249
2022-08-10 2022-06-30 13F AMPHENOL CL A 032095101 300,410 18,647 6.62 19,340 -8.91 0.1184
2022-05-10 2022-03-31 13F AMPHENOL CL A 032095101 281,763 17,195 6.50 21,231 -8.25 0.1250
2022-02-04 2021-12-31 13F AMPHENOL CL A 032095101 264,568 12,570 4.99 23,139 25.39 0.1429
2021-11-10 2021-09-30 13F AMPHENOL CL A 032095101 251,998 16,222 6.88 18,454 14.42 0.1289
2021-08-10 2021-06-30 13F AMPHENOL CL A 032095101 235,776 8,361 3.68 16,129 7.51 0.1240
2021-08-10 2021-03-31 13F/A-1 AMPHENOL CL A 032095101 227,415 114,756 101.86 15,003 1.84 0.1365
2021-05-11 2021-03-31 13F AMPHENOL CL A 032095101 227,215 114,556 14,990 0.1435
2021-02-12 2020-12-31 13F AMPHENOL CL A 032095101 112,659 -1,565 -1.37 14,732 19.12 0.1840
2020-12-10 2020-09-30 13F AMPHENOL CORP CL A 032095101 114,224 3,887 3.52 12,367 16.99 0.1860
2020-08-10 2020-06-30 13F AMPHENOL CORP CL A 032095101 110,337 18,022 19.52 10,571 57.12 0.1919
2020-05-18 2020-03-31 13F AMPHENOL CORP CL A 032095101 92,315 18,559 25.16 6,728 -15.72 0.1481
2020-02-13 2019-12-31 13F AMPHENOL CORP NEW CL A COM 032095101 73,756 8,628 13.25 7,983 27.04 0.1594
2019-11-12 2019-09-30 13F AMPHENOL CORP NEW CL A COM 032095101 65,128 7,849 13.70 6,284 14.36 0.1478
2019-08-14 2019-06-30 13F AMPHENOL CORP NEW CL A COM 032095101 57,279 1,135 2.02 5,495 3.64 0.1456
2019-04-23 2019-03-31 13F/A-1 AMPHENOL CORP NEW CL A COM 032095101 56,144 56,144 5,302 0.1907
2019-04-12 2019-03-31 13F AMPHENOL CORP NEW CL A COM 032095101 29,982 2,429 0.1294
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.