Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionBokf, Na
Latest Disclosed Ownership61,617 shares
Latest Disclosed Value $ 7,785,308
Bokf, Na reports 3.53% decrease in ownership of APH / Amphenol Corporation

On May 8, 2026 - Bokf, Na filed a 13F-HR form disclosing ownership of 61,617 shares of Amphenol Corporation (US:APH) valued at $7,785,308 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 63,872 shares of Amphenol Corporation. This represents a change in shares of -3.53% during the quarter. The current value of the position is $9,095,902 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)
2026-05-08 2026-03-31 13F AMPHENOL CORP-CL A common 032095101 61,617 -2,255 -3.53 7,785 -9.80 0.0917
2026-02-03 2025-12-31 13F AMPHENOL CORP-CL A common 032095101 63,872 1,108 1.77 8,632 11.12 0.1321
2025-11-13 2025-09-30 13F AMPHENOL CORP-CL A common 032095101 62,764 -4,182 -6.25 7,767 17.50 0.1169
2025-08-12 2025-06-30 13F AMPHENOL CORP-CL A common 032095101 66,946 -4,895 -6.81 6,611 40.28 0.1071
2025-05-13 2025-03-31 13F AMPHENOL CORP-CL A common 032095101 71,841 -1,353 -1.85 4,712 -8.29 0.0833
2025-02-14 2024-12-31 13F AMPHENOL CORP-CL A common 032095101 73,194 -5,121 -6.54 5,138 5.70 0.0868
2024-11-14 2024-09-30 13F AMPHENOL CORP-CL A common 032095101 78,315 -36,334 -31.69 4,861 -37.06 0.0863
2024-08-08 2024-06-30 13F AMPHENOL CORP CL A 032095101 114,649 50,873 79.77 7,724 6.19 0.1387
2024-05-15 2024-03-31 13F AMPHENOL CORP CL A 032095101 63,776 -2,053 -3.12 7,274 11.46 0.1324
2024-02-14 2023-12-31 13F AMPHENOL CORP CL A 032095101 65,829 -282 -0.43 6,526 22.54 0.1278
2023-11-14 2023-09-30 13F AMPHENOL CORP CL A 032095101 66,111 -11,581 -14.91 5,325 -19.31 0.1174
2023-08-21 2023-06-30 13F AMPHENOL CORP CL A 032095101 77,692 -11,524 -12.92 6,600 -9.48 0.1344
2023-05-11 2023-03-31 13F AMPHENOL CORP CL A 032095101 89,216 -7,258 -7.52 7,291 -0.75 0.1526
2023-02-13 2022-12-31 13F AMPHENOL CORP CL A 032095101 96,474 -1,261 -1.29 7,346 12.24 0.1356
2022-11-14 2022-09-30 13F AMPHENOL CORP CL A 032095101 97,735 -3,543 -3.50 6,544 0.37 0.1324
2022-08-11 2022-06-30 13F AMPHENOL CORP CL A 032095101 101,278 -1,481 -1.44 6,520 -15.79 0.1250
2022-05-13 2022-03-31 13F AMPHENOL CORP CL A 032095101 102,759 -15,025 -12.76 7,743 -24.83 0.1276
2022-03-11 2021-12-31 13F AMPHENOL CORP CL A 032095101 117,784 -7,741 -6.17 10,301 12.06 0.1594
2021-11-10 2021-09-30 13F AMPHENOL CORP CL A 032095101 125,525 8,568 7.33 9,192 19.14 0.1581
2021-04-21 2021-03-31 13F AMPHENOL CORP CL A 032095101 116,957 65,128 125.66 7,715 13.82 0.1403
2021-02-12 2020-12-31 13F AMPHENOL CORP CL A 032095101 51,829 3,548 7.35 6,778 29.65 0.1293
2020-10-30 2020-09-30 13F AMPHENOL CORP CL A 032095101 48,281 -15,812 -24.67 5,228 -14.87 0.1148
2020-08-12 2020-06-30 13F AMPHENOL CORP CL A 032095101 64,093 3,925 6.52 6,141 40.01 0.1444
2020-05-13 2020-03-31 13F AMPHENOL CORP CL A 032095101 60,168 1,267 2.15 4,386 -31.20 0.1264
2020-02-12 2019-12-31 13F AMPHENOL CORP CL A 032095101 58,901 -685 -1.15 6,375 10.87 0.1441
2019-11-13 2019-09-30 13F AMPHENOL CORP CL A 032095101 59,586 -13,316 -18.27 5,750 -17.80 0.1385
2019-08-14 2019-06-30 13F AMPHENOL CORP CL A 032095101 72,902 5,724 8.52 6,995 10.26 0.1680
2019-05-15 2019-03-31 13F AMPHENOL CORP CL A 032095101 67,178 26,079 63.45 6,344 90.51 0.1519
2019-02-13 2018-12-31 13F AMPHENOL CORP CL A 032095101 41,099 8,382 25.62 3,330 8.26 0.0953
2018-11-13 2018-09-30 13F AMPHENOL CORP CL A 032095101 32,717 5,263 19.17 3,076 28.60 0.0772
2018-08-13 2018-06-30 13F AMPHENOL CORP CL A 032095101 27,454 12,811 87.49 2,392 89.54 0.0644
2018-05-14 2018-03-31 13F AMPHENOL CORP CL A 032095101 14,643 -379 -2.52 1,262 -4.32 0.0358
2018-02-14 2017-12-31 13F AMPHENOL CORP CL A 032095101 15,022 -59 -0.39 1,319 3.37 0.0363
2017-11-14 2017-09-30 13F AMPHENOL CORP CL A 032095101 15,081 1,405 10.27 1,276 26.46 0.0370
2017-08-14 2017-06-30 13F AMPHENOL CORP CL A 032095101 13,676 -12 -0.09 1,009 3.59 0.0317
2017-05-15 2017-03-31 13F AMPHENOL CORP CL A 032095101 13,688 113 0.83 974 6.80 0.0304
2017-02-14 2016-12-31 13F AMPHENOL CORP CL A 032095101 13,575 -33 -0.24 912 3.17 0.0300
2016-11-10 2016-09-30 13F AMPHENOL CORP CL A 032095101 13,608 -835 -5.78 884 6.76 0.0293
2016-08-12 2016-06-30 13F AMPHENOL CORP CL A 032095101 14,443 -1,039 -6.71 828 -7.59 0.0292
2016-05-13 2016-03-31 13F AMPHENOL CORP CL A 032095101 15,482 1,187 8.30 896 20.11 0.0324
2016-02-09 2015-12-31 13F AMPHENOL CORP CL A 032095101 14,295 253 1.80 746 4.34 0.0270
2015-11-13 2015-09-30 13F AMPHENOL CORP CL A 032095101 14,042 1,951 16.14 715 2.00 0.0269
2015-08-13 2015-06-30 13F AMPHENOL CORP CL A 032095101 12,091 37 0.31 701 -1.41 0.0238
2015-05-14 2015-03-31 13F AMPHENOL CORP CL A 032095101 12,054 4,365 56.77 711 72.15 0.0239
2015-02-12 2014-12-31 13F AMPHENOL CORP CL A 032095101 7,689 -11 -0.14 413 -46.29 0.0143
2014-11-13 2014-09-30 13F AMPHENOL CORP CL A 032095101 7,700 935 13.82 769 17.94 0.0257
2014-08-14 2014-06-30 13F AMPHENOL CORP CL A 032095101 6,765 435 6.87 652 12.41 0.0209
2014-05-14 2014-03-31 13F AMPHENOL CORP CL A 032095101 6,330 167 2.71 580 5.45 0.0192
2014-02-14 2013-12-31 13F AMPHENOL CORP CL A 032095101 6,163 -8,776 -58.75 550 -52.42 0.0184
2013-11-12 2013-09-30 13F AMPHENOL CORP CL A 032095101 14,939 -2,523 -14.45 1,156 -15.06 0.0420
2013-08-14 2013-06-30 13F AMPHENOL CORP CL A 032095101 17,462 17,462 1,361 0.0514
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.