AMETEK, Inc.
MX ˙ BMV ˙ US0311001004
SecurityMX:AME / AMETEK, Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership452,471 shares
Latest Disclosed Value $ 96,991,575
Rhumbline Advisers reports 0.19% decrease in ownership of AME / AMETEK, Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 452,471 shares of AMETEK, Inc. (MX:AME) valued at $96,991,575 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 453,319 shares of AMETEK, Inc.. This represents a change in shares of -0.19% 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)
2026-05-12 2026-03-31 13F AMETEK INC NEW COM COM 031100100 452,471 -848 -0.19 96,992 4.21 0.0830
2026-02-13 2025-12-31 13F AMETEK INC NEW COM COM 031100100 453,319 593 0.13 93,071 9.35 0.0752
2025-11-06 2025-09-30 13F AMETEK INC NEW COM COM 031100100 452,726 -8,439 -1.83 85,112 1.99 0.0684
2025-08-12 2025-06-30 13F AMETEK INC NEW COM COM 031100100 461,165 3,864 0.84 83,452 6.01 0.0715
2025-05-29 2025-03-31 13F/A-1 AMETEK INC NEW COM COM 031100100 457,301 13,213 2.98 78,720 -1.66 0.0736
2025-04-08 2025-03-31 13F AMETEK INC NEW COM COM 031100100 457,301 13,213 78,720 0.0736
2025-05-29 2024-12-31 13F/A-1 AMETEK INC NEW COM COM 031100100 444,088 -2,749 -0.62 80,051 4.33 0.0716
2025-01-30 2024-12-31 13F AMETEK INC NEW COM COM 031100100 444,088 -2,749 80,051 0.0716
2024-11-12 2024-09-30 13F AMETEK INC NEW COM COM 031100100 446,837 -52,067 -10.44 76,726 -7.75 0.0692
2024-08-01 2024-06-30 13F AMETEK INC NEW COM COM 031100100 498,904 -5,330 -1.06 83,172 -9.82 0.0782
2024-05-09 2024-03-31 13F AMETEK INC NEW COM COM 031100100 504,234 35 0.01 92,224 10.93 0.0886
2024-02-08 2023-12-31 13F AMETEK INC NEW COM COM 031100100 504,199 2,635 0.53 83,137 12.18 0.0871
2023-11-09 2023-09-30 13F AMETEK INC NEW COM COM 031100100 501,564 33,725 7.21 74,111 -2.14 0.0860
2023-08-08 2023-06-30 13F AMETEK INC NEW COM COM 031100100 467,839 -8,538 -1.79 75,734 109,657.97 0.0848
2023-05-11 2023-03-31 13F AMETEK INC NEW COM COM 031100100 476,377 4,206 0.89 69 -99.90 0.0854
2023-02-14 2022-12-31 13F AMETEK INC NEW COM COM 031100100 472,171 15,899 3.48 65,972 27.49 0.0887
2022-11-10 2022-09-30 13F AMETEK INC NEW COM COM 031100100 456,272 20,429 4.69 51,746 8.04 0.0771
2022-08-11 2022-06-30 13F AMETEK INC NEW COM COM 031100100 435,843 48,960 12.65 47,895 -7.05 0.0699
2022-05-12 2022-03-31 13F AMETEK INC NEW COM COM 031100100 386,883 2,968 0.77 51,525 -8.73 0.0663
2022-02-10 2021-12-31 13F AMETEK INC NEW COM COM 031100100 383,915 7,649 2.03 56,451 20.98 0.0692
2021-11-12 2021-09-30 13F AMETEK INC NEW COM COM 031100100 376,266 -55,775 -12.91 46,661 -19.10 0.0632
2021-08-05 2021-06-30 13F AMETEK INC NEW COM COM 031100100 432,041 -12,838 -2.89 57,677 1.50 0.0757
2021-05-06 2021-03-31 13F AMETEK INC NEW COM COM 031100100 444,879 -22,975 -4.91 56,824 0.43 0.0772
2021-02-10 2020-12-31 13F AMETEK INC NEW COM COM 031100100 467,854 1,354 0.29 56,582 22.02 0.0781
2020-11-12 2020-09-30 13F AMETEK INC NEW COM COM 031100100 466,500 67,313 16.86 46,370 29.98 0.0727
2020-08-13 2020-06-30 13F AMETEK INC NEW COM COM 031100100 399,187 -35,733 -8.22 35,675 13.89 0.0596
2020-05-06 2020-03-31 13F AMETEK INC NEW COM COM 031100100 434,920 19,689 4.74 31,323 -24.37 0.0656
2020-02-05 2019-12-31 13F AMETEK INC NEW COM COM 031100100 415,231 3,686 0.90 41,415 9.60 0.0693
2019-10-23 2019-09-30 13F AMETEK INC NEW COM COM 031100100 411,545 6,418 1.58 37,788 2.68 0.0691
2019-08-14 2019-06-30 13F AMETEK INC NEW COM COM 031100100 405,127 14,422 3.69 36,802 13.53 0.0691
2019-05-01 2019-03-31 13F AMETEK INC NEW COM COM 031100100 390,705 -38,015 -8.87 32,417 11.69 0.0628
2019-01-31 2018-12-31 13F AMETEK INC NEW COM COM 031100100 428,720 -16,038 -3.61 29,024 -17.52 0.0632
2018-11-07 2018-09-30 13F AMETEK INC NEW COM COM 031100100 444,758 -5,454 -1.21 35,189 8.32 0.0680
2018-08-06 2018-06-30 13F AMETEK INC NEW COM COM 031100100 450,212 13,189 3.02 32,487 -2.15 0.0655
2018-05-02 2018-03-31 13F AMETEK INC NEW COM COM 031100100 437,023 4,179 0.97 33,201 5.84 0.0693
2018-02-09 2017-12-31 13F AMETEK INC NEW COM COM 031100100 432,844 -1,339 -0.31 31,368 9.40 0.0637
2017-11-06 2017-09-30 13F AMETEK INC NEW COM COM 031100100 434,183 -3,890 -0.89 28,673 8.06 0.0623
2017-08-02 2017-06-30 13F AMETEK INC NEW COM COM 031100100 438,073 19,728 4.72 26,534 17.28 0.0606
2017-05-02 2017-03-31 13F AMETEK INC NEW COM COM 031100100 418,345 -8,232 -1.93 22,624 9.13 0.0528
2017-01-27 2016-12-31 13F AMETEK INC NEW COM COM 031100100 426,577 40,940 10.62 20,732 12.51 0.0525
2016-11-08 2016-09-30 13F AMETEK INC NEW COM COM 031100100 385,637 44,689 13.11 18,426 16.90 0.0508
2016-08-11 2016-06-30 13F AMETEK INC NEW COM COM 031100100 340,948 -41,425 -10.83 15,762 -17.52 0.0467
2016-05-02 2016-03-31 13F AMETEK INC USD.01 COM 031100100 382,373 -42,779 -10.06 19,111 -16.12 0.0593
2016-02-03 2015-12-31 13F AMETEK INC USD.01 COM 031100100 425,152 9,637 2.32 22,784 4.80 0.0733
2015-11-04 2015-09-30 13F AMETEK INC USD.01 COM 031100100 415,515 34,156 8.96 21,740 4.06 0.0740
2015-08-04 2015-06-30 13F AMETEK INC USD.01 COM 031100100 381,359 18,687 5.15 20,891 9.64 0.0666
2015-05-12 2015-03-31 13F AMETEK INC USD.01 COM 031100100 362,672 -70 -0.02 19,055 -0.19 0.0550
2015-02-06 2014-12-31 13F AMETEK INC USD.01 COM 031100100 362,742 2,798 0.78 19,091 5.63 0.0555
2014-11-12 2014-09-30 13F AMETEK INC USD.01 COM 031100100 359,944 -2,468 -0.68 18,073 -4.61 0.0543
2014-08-06 2014-06-30 13F AMETEK INC USD.01 COM 031100100 362,412 5,580 1.56 18,947 3.12 0.0556
2014-05-06 2014-03-31 13F AMETEK INC USD.01 COM 031100100 356,832 8,354 2.40 18,373 0.10 0.0545
2014-02-03 2013-12-31 13F AMETEK INC USD.01 COM 031100100 348,478 52,200 17.62 18,354 34.61 0.0541
2013-11-05 2013-09-30 13F AMETEK INC USD.01 COM 031100100 296,278 -158,998 -34.92 13,635 -29.20 0.0422
2013-08-07 2013-06-30 13F AMETEK INC USD.01 COM 031100100 455,276 455,276 19,258 0.0619
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.