AMETEK, Inc.
MX ˙ BMV ˙ US0311001004
SecurityMX:AME / AMETEK, Inc.
InstitutionTcw Group Inc
Latest Disclosed Ownership486,922 shares
Latest Disclosed Value $ 104,376,606
Tcw Group Inc reports 2.04% increase in ownership of AME / AMETEK, Inc.

On May 14, 2026 - Tcw Group Inc filed a 13F-HR form disclosing ownership of 486,922 shares of AMETEK, Inc. (MX:AME) valued at $104,376,606 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 477,200 shares of AMETEK, Inc.. This represents a change in shares of 2.04% 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 486,922 9,722 2.04 104,377 6.54 0.4180
2026-02-17 2025-12-31 13F AMETEK COM 031100100 477,200 394,225 475.11 97,974 528.07 0.7018
2025-11-14 2025-09-30 13F AMETEK COM 031100100 82,975 -7,308 -8.09 15,599 -4.52 0.1306
2025-08-14 2025-06-30 13F AMETEK COM 031100100 90,283 -6,335 -6.56 16,338 -1.77 0.1280
2025-05-07 2025-03-31 13F AMETEK COM 031100100 96,618 -3,291 -3.29 16,632 -7.65 0.1488
2025-02-04 2024-12-31 13F AMETEK COM 031100100 99,909 -1,896 -1.86 18,010 3.03 0.1512
2024-11-19 2024-09-30 13F/A-1 AMETEK COM 031100100 101,805 -9,834 -8.81 17,481 -6.08 0.1528
2024-11-08 2024-09-30 13F AMETEK COM 031100100 101,805 -9,834 17,481 0.0786
2024-07-19 2024-06-30 13F AMETEK COM 031100100 111,639 -1,362 -1.21 18,611 -9.95 0.1664
2024-05-10 2024-03-31 13F AMETEK COM 031100100 113,001 920 0.82 20,668 11.83 0.2092
2024-02-09 2023-12-31 13F AMETEK COM 031100100 112,081 4,141 3.84 18,482 15.88 0.2059
2023-11-15 2023-09-30 13F AMETEK COM 031100100 107,940 0 0.00 15,949 -8.72 0.2004
2023-08-14 2023-06-30 13F AMETEK COM 031100100 107,940 25 0.02 17,473 11.41 0.1937
2023-05-15 2023-03-31 13F AMETEK COM 031100100 107,915 -183 -0.17 15,683 3.84 0.2006
2023-02-14 2022-12-31 13F AMETEK COM 031100100 108,098 -27,388 -20.21 15,103 -1.71 0.2162
2022-10-27 2022-09-30 13F AMETEK COM 031100100 135,486 0 0.00 15,365 3.20 0.2248
2022-07-19 2022-06-30 13F AMETEK COM 031100100 135,486 0 0.00 14,889 -17.49 0.1949
2022-04-19 2022-03-31 13F AMETEK COM 031100100 135,486 11,581 9.35 18,044 -0.96 0.1722
2022-01-26 2021-12-31 13F AMETEK COM 031100100 123,905 0 0.00 18,219 18.57 0.1498
2021-10-26 2021-09-30 13F AMETEK COM 031100100 123,905 -23,949 -16.20 15,366 -22.15 0.0396
2021-07-23 2021-06-30 13F AMETEK COM 031100100 147,854 29,837 25.28 19,739 30.94 0.1710
2021-05-05 2021-03-31 13F AMETEK COM 031100100 118,017 74,406 170.61 15,075 185.78 0.1444
2021-02-02 2020-12-31 13F AMETEK COM 031100100 43,611 0 0.00 5,275 21.68 0.0459
2020-10-30 2020-09-30 13F AMETEK COM 031100100 43,611 6,601 17.84 4,335 31.05 0.0473
2020-08-05 2020-06-30 13F AMETEK COM 031100100 37,010 16 0.04 3,308 24.17 0.0386
2020-05-05 2020-03-31 13F AMETEK COM 031100100 36,994 0 0.00 2,664 -27.79 0.0368
2020-02-10 2019-12-31 13F AMETEK INC COM 031100100 36,994 0 0.00 3,689 8.60 0.0409
2019-11-13 2019-09-30 13F AMETEK INC COM 031100100 36,994 -14,792 -28.56 3,397 -27.78 0.0387
2019-08-07 2019-06-30 13F AMETEK INC COM 031100100 51,786 0 0.00 4,704 9.47 0.0500
2019-05-13 2019-03-31 13F AMETEK INC COM 031100100 51,786 -5,102 -8.97 4,297 11.55 0.0412
2019-02-11 2018-12-31 13F AMETEK INC COM 031100100 56,888 56,888 3,852 0.0399
2017-05-11 2017-03-31 13F AMETEK INC COM 031100100 0 -21,022 -100.00 0 -100.00
2017-02-10 2016-12-31 13F AMETEK INC COM 031100100 21,022 2,254 12.01 1,022 13.94 0.0077
2016-11-14 2016-09-30 13F AMETEK INC COM 031100100 18,768 -2,941 -13.55 897 -10.66 0.0068
2016-08-12 2016-06-30 13F/A-1 AMETEK INC COM 031100100 21,709 648 3.08 1,004 -4.65 0.0076
2016-08-11 2016-06-30 13F AMETEK INC COM 031100100 21,709 1,004
2016-05-16 2016-03-31 13F AMETEK INC COM 031100100 21,061 1,333 6.76 1,053 -0.38 0.0077
2016-02-16 2015-12-31 13F AMETEK INC COM 031100100 19,728 1 0.01 1,057 2.42 0.0076
2015-11-13 2015-09-30 13F AMETEK INC COM 031100100 19,727 790 4.17 1,032 -0.48 0.0074
2015-08-12 2015-06-30 13F AMETEK INC COM 031100100 18,937 -51,800 -73.23 1,037 -72.10 0.0067
2015-05-13 2015-03-31 13F AMETEK INC COM 031100100 70,737 1,937 2.82 3,717 2.65 0.0178
2015-02-13 2014-12-31 13F AMETEK INC COM 031100100 68,800 -51,650 -42.88 3,621 -40.13 0.0151
2014-11-14 2014-09-30 13F AMETEK INC COM 031100100 120,450 -54,104 -31.00 6,048 -33.74 0.0243
2014-08-14 2014-06-30 13F AMETEK INC COM 031100100 174,554 -2,338 -1.32 9,127 0.21 0.0376
2014-05-13 2014-03-31 13F AMETEK INC COM 031100100 176,892 265 0.15 9,108 -2.10 0.0378
2014-02-18 2013-12-31 13F/A-1 AMETEK INC COM 031100100 176,627 2,897 1.67 9,303 16.37 0.0392
2014-02-14 2013-12-31 13F AMETEK INC COM 031100100 9,303 176,627
2013-11-14 2013-09-30 13F AMETEK INC COM 031100100 173,730 118,960 217.20 7,994 245.02 0.0369
2013-08-14 2013-06-30 13F/A-1 AMETEK INC COM 031100100 54,770 54,770 2,317 0.0114
2013-08-14 2013-06-30 13F AMETEK INC COM 031100100 54,770 2,317
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.