AMETEK, Inc.
MX ˙ BMV ˙ US0311001004
SecurityMX:AME / AMETEK, Inc.
InstitutionRockefeller Capital Management L.P.
Latest Disclosed Ownership15,442 shares
Latest Disclosed Value $ 3,310,532
Rockefeller Capital Management L.P. reports 19.87% increase in ownership of AME / AMETEK, Inc.

On May 14, 2026 - Rockefeller Capital Management L.P. filed a 13F-HR form disclosing ownership of 15,442 shares of AMETEK, Inc. (MX:AME) valued at $3,310,532 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on March 16, 2026 disclosing 12,882 shares of AMETEK, Inc.. This represents a change in shares of 19.87% 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)
2026-05-14 2026-03-31 13F AMETEK COM 031100100 15,442 2,560 19.87 3,311 25.14 0.0030
2026-03-16 2025-12-31 13F/A-1 AMETEK COM 031100100 12,882 1,857 16.84 2,645 27.65 0.0048
2026-02-14 2025-12-31 13F AMETEK COM 031100100 12,889 1,864 2,647 0.0024
2025-11-14 2025-09-30 13F AMETEK COM 031100100 11,025 673 6.50 2,073 10.62 0.0041
2025-08-14 2025-06-30 13F/A-1 AMETEK COM 031100100 10,352 -727 -6.56 1,873 -1.78 0.0041
2025-08-08 2025-06-30 13F AMETEK COM 031100100 10,352 -727 1,873 0.0024
2025-05-14 2025-03-31 13F AMETEK COM 031100100 11,079 -1,162 -9.49 1,907 -13.59 0.0047
2025-02-13 2024-12-31 13F AMETEK COM 031100100 12,241 1,085 9.73 2,207 15.07 0.0057
2024-11-14 2024-09-30 13F AMETEK COM 031100100 11,156 -203 -1.79 1,919 1.11 0.0052
2024-08-12 2024-06-30 13F AMETEK COM 031100100 11,359 567 5.25 1,898 -3.90 0.0054
2024-05-14 2024-03-31 13F AMETEK COM 031100100 10,792 10,792 1,974 0.0058
2023-11-14 2023-09-30 13F AMETEK COM 031100100 0 -7,611 -100.00 0 -100.00
2023-08-14 2023-06-30 13F AMETEK COM 031100100 7,611 378 5.23 1,232 123,100.00 0.0048
2023-05-16 2023-03-31 13F AMETEK COM 031100100 7,233 -1,726 -19.27 1 -99.92 0.0045
2023-03-06 2022-12-31 13F AMETEK COM 031100100 8,959 3,233 56.46 1,250 92.60 0.0063
2022-11-02 2022-09-30 13F AMETEK COM 031100100 5,726 887 18.33 649 22.22 0.0034
2022-08-12 2022-06-30 13F AMETEK COM 031100100 4,839 -1,722 -26.25 531 -39.18 0.0028
2022-05-13 2022-03-31 13F AMETEK COM 031100100 6,561 235 3.71 873 -6.03 0.0042
2022-02-14 2021-12-31 13F AMETEK COM 031100100 6,326 -1,087 -14.66 929 1.09 0.0043
2021-11-12 2021-09-30 13F AMETEK COM 031100100 7,413 -146 -1.93 919 -8.83 0.0048
2021-08-10 2021-06-30 13F AMETEK COM 031100100 7,559 1,477 24.28 1,008 29.90 0.0057
2021-05-11 2021-03-31 13F AMETEK COM 031100100 6,082 -142 -2.28 776 3.19 0.0053
2021-02-12 2020-12-31 13F AMETEK COM 031100100 6,224 -9,912 -61.43 752 -53.09 0.0057
2020-11-13 2020-09-30 13F AMETEK COM 031100100 16,136 -194 -1.19 1,603 9.79 0.0150
2020-08-12 2020-06-30 13F AMETEK COM 031100100 16,330 15,971 4,448.75 1,460 5,515.38 0.0153
2020-05-12 2020-03-31 13F AMETEK COM 031100100 359 -219 -37.89 26 -55.17 0.0003
2020-02-07 2019-12-31 13F AMETEK INC COM 031100100 578 120 26.20 58 38.10 0.0007
2019-11-12 2019-09-30 13F AMETEK INC COM 031100100 458 0 0.00 42 0.00 0.0006
2019-08-09 2019-06-30 13F AMETEK INC COM 031100100 458 -246 -34.94 42 -28.81 0.0006
2019-05-10 2019-03-31 13F AMETEK INC COM 031100100 704 673 2,170.97 59 2,850.00 0.0008
2019-02-12 2018-12-31 13F AMETEK INC COM 031100100 31 0 0.00 2 0.00 0.0000
2018-11-02 2018-09-30 13F Ametek Common 031100100 31 0 0.00 2 0.00 0.0000
2018-07-31 2018-06-30 13F Ametek Common 031100100 31 31 2 0.0000
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.