AMETEK, Inc.
MX ˙ BMV ˙ US0311001004
SecurityMX:AME / AMETEK, Inc.
InstitutionAssenagon Asset Management S.A.
Latest Disclosed Ownership5,691 shares
Latest Disclosed Value $ 1,219,923
Assenagon Asset Management S.A. reports 98.89% decrease in ownership of AME / AMETEK, Inc.

On April 20, 2026 - Assenagon Asset Management S.A. filed a 13F-HR form disclosing ownership of 5,691 shares of AMETEK, Inc. (MX:AME) valued at $1,219,923 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 9, 2026 disclosing 510,728 shares of AMETEK, Inc.. This represents a change in shares of -98.89% 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)
2026-04-20 2026-03-31 13F AMETEK COM 031100100 5,691 -505,037 -98.89 1,220 -98.84 0.0019
2026-01-09 2025-12-31 13F AMETEK COM 031100100 510,728 297,052 139.02 104,858 161.03 0.1444
2025-10-07 2025-09-30 13F AMETEK COM 031100100 213,676 6,363 3.07 40,171 7.08 0.0549
2025-07-11 2025-06-30 13F AMETEK COM 031100100 207,313 -106,636 -33.97 37,515 -30.58 0.0557
2025-04-15 2025-03-31 13F AMETEK COM 031100100 313,949 -227,568 -42.02 54,043 -44.64 0.0901
2025-01-14 2024-12-31 13F AMETEK COM 031100100 541,517 440,197 434.46 97,614 461.09 0.1574
2024-10-23 2024-09-30 13F AMETEK COM 031100100 101,320 -50,812 -33.40 17,398 -31.40 0.0320
2024-07-18 2024-06-30 13F AMETEK COM 031100100 152,132 61,677 68.19 25,362 53.29 0.0565
2024-04-24 2024-03-31 13F AMETEK COM 031100100 90,455 -60,406 -40.04 16,544 -33.49 0.0392
2024-01-17 2023-12-31 13F AMETEK COM 031100100 150,861 89,293 145.03 24,875 173.44 0.0660
2023-11-06 2023-09-30 13F AMETEK COM 031100100 61,568 57,429 1,387.51 9,097 1,257.76 0.0282
2023-07-25 2023-06-30 13F AMETEK COM 031100100 4,139 -39,471 -90.51 670 -89.43 0.0023
2023-04-18 2023-03-31 13F AMETEK COM 031100100 43,610 -295,272 -87.13 6,338 13,382.98 0.0225
2023-01-12 2022-12-31 13F AMETEK COM 031100100 338,882 212,345 167.81 47 -99.67 0.1708
2022-10-27 2022-09-30 13F AMETEK COM 031100100 126,537 111,933 766.45 14,351 794.14 0.0551
2022-07-27 2022-06-30 13F AMETEK COM 031100100 14,604 -97,521 -86.98 1,605 -89.25 0.0059
2022-04-25 2022-03-31 13F AMETEK COM 031100100 112,125 11,663 11.61 14,933 1.09 0.0415
2022-02-01 2021-12-31 13F AMETEK COM 031100100 100,462 93,822 1,412.98 14,772 1,694.90 0.0428
2021-10-19 2021-09-30 13F AMETEK COM 031100100 6,640 -202,691 -96.83 823 -97.06 0.0026
2021-07-15 2021-06-30 13F AMETEK COM 031100100 209,331 201,872 2,706.42 27,946 2,832.42 0.0949
2021-04-26 2021-03-31 13F AMETEK COM 031100100 7,459 -24,581 -76.72 953 -75.41 0.0039
2021-02-01 2020-12-31 13F AMETEK COM 031100100 32,040 -19,529 -37.87 3,875 -24.40 0.0169
2020-10-07 2020-09-30 13F AMETEK COM 031100100 51,569 37,578 268.59 5,126 310.08 0.0288
2020-07-21 2020-06-30 13F AMETEK COM 031100100 13,991 13,991 1,250 0.0080
2020-01-17 2019-12-31 13F AMETEK INC COM 031100100 0 -139,520 -100.00 0 -100.00
2019-10-16 2019-09-30 13F AMETEK INC COM 031100100 139,520 72,990 109.71 12,811 111.96 0.0858
2019-08-12 2019-06-30 13F AMETEK INC COM 031100100 66,530 -83,231 -55.58 6,044 -51.36 0.0454
2019-04-26 2019-03-31 13F AMETEK INC COM 031100100 149,761 -173,503 -53.67 12,426 -43.22 0.1166
2019-01-23 2018-12-31 13F AMETEK INC COM 031100100 323,264 43,117 15.39 21,885 -1.26 0.2479
2018-10-29 2018-09-30 13F AMETEK INC COM 031100100 280,147 -61,370 -17.97 22,165 -10.06 0.2188
2018-07-17 2018-06-30 13F AMETEK INC COM 031100100 341,517 230,063 206.42 24,644 191.06 0.2845
2018-04-30 2018-03-31 13F AMETEK INC COM 031100100 111,454 111,454 8,467 0.1103
2018-01-25 2017-12-31 13F AMETEK INC COM 031100100 0 -90,046 -100.00 0 -100.00
2017-10-18 2017-09-30 13F AMETEK INC COM 031100100 90,046 90,046 5,947 0.0552
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.