AMETEK, Inc.
US ˙ NYSE ˙ US0311001004

SecurityAME / AMETEK, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership2,075,229 shares
Latest Disclosed Value $ 444,787,820
Dimensional Fund Advisors Lp reports 1.42% increase in ownership of AME / AMETEK, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 2,075,229 shares of AMETEK, Inc. (US:AME) valued at $444,846,088 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 2,046,228 shares of AMETEK, Inc.. This represents a change in shares of 1.42% during the quarter. The current value of the position is $473,629,515 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)
2026-05-07 2026-03-31 13F AMETEK COM 031100100 2,075,229 29,001 1.42 444,788 5.87 0.0199
2026-02-12 2025-12-31 13F AMETEK COM 031100100 2,046,228 11,442 0.56 420,128 9.83 0.0881
2025-11-12 2025-09-30 13F AMETEK COM 031100100 2,034,786 -115,097 -5.35 382,520 -1.68 0.0821
2025-08-12 2025-06-30 13F AMETEK COM 031100100 2,149,883 2,467 0.11 389,046 5.26 0.0901
2025-05-13 2025-03-31 13F AMETEK COM 031100100 2,147,416 13,464 0.63 369,616 -3.92 0.0919
2025-02-13 2024-12-31 13F AMETEK COM 031100100 2,133,952 87,757 4.29 384,677 9.48 0.0924
2024-11-07 2024-09-30 13F AMETEK COM 031100100 2,046,195 164,029 8.71 351,354 11.98 0.0852
2024-08-09 2024-06-30 13F AMETEK COM 031100100 1,882,166 148,447 8.56 313,777 -1.05 0.0820
2024-05-10 2024-03-31 13F AMETEK COM 031100100 1,733,719 32,161 1.89 317,097 13.02 0.0858
2024-02-07 2023-12-31 13F AMETEK COM 031100100 1,701,558 255,193 17.64 280,573 31.27 0.0819
2023-11-09 2023-09-30 13F AMETEK COM 031100100 1,446,365 6,367 0.44 213,731 -8.31 0.0701
2023-08-09 2023-06-30 13F AMETEK COM 031100100 1,439,998 89,557 6.63 233,096 18.78 0.0743
2023-05-12 2023-03-31 13F AMETEK COM 031100100 1,350,441 -19,367 -1.41 196,237 102,641.88 0.0661
2023-02-09 2022-12-31 13F AMETEK COM 031100100 1,369,808 12,067 0.89 191 -99.88 0.0565
2022-11-10 2022-09-30 13F AMETEK COM 031100100 1,357,741 4,390 0.32 153,985 3.54 0.0591
2022-08-12 2022-06-30 13F AMETEK COM 031100100 1,353,351 10,412 0.78 148,715 -16.86 0.0533
2022-05-13 2022-03-31 13F AMETEK COM 031100100 1,342,939 -5,272 -0.39 178,880 -9.76 0.0551
2022-02-09 2021-12-31 13F AMETEK COM 031100100 1,348,211 -13,502 -0.99 198,230 17.36 0.0599
2021-11-12 2021-09-30 13F AMETEK COM 031100100 1,361,713 18,269 1.36 168,904 -5.82 0.0544
2021-08-12 2021-06-30 13F AMETEK COM 031100100 1,343,444 -13,788 -1.02 179,342 3.45 0.0568
2021-05-14 2021-03-31 13F AMETEK COM 031100100 1,357,232 -24,561 -1.78 173,357 3.74 0.0573
2021-03-08 2020-12-31 13F/A-2 AMETEK COM 031100100 1,381,793 656 0.05 167,103 21.72 0.0603
2021-02-11 2020-12-31 13F AMETEK COM 031100100 1,381,793 656 167,103 60,348.7216
2020-11-12 2020-09-30 13F AMETEK COM 031100100 1,381,137 3,414 0.25 137,286 11.51 0.0582
2020-08-13 2020-06-30 13F AMETEK COM 031100100 1,377,723 175,677 14.61 123,110 42.19 0.0541
2020-05-14 2020-03-31 13F AMETEK COM 031100100 1,202,046 70,758 6.25 86,581 -23.27 0.0451
2020-02-14 2019-12-31 13F AMETEK INC COM 031100100 1,131,288 4,331 0.38 112,836 9.05 0.0411
2019-11-12 2019-09-30 13F AMETEK INC COM 031100100 1,126,957 10,328 0.92 103,476 2.03 0.0402
2019-08-13 2019-06-30 13F AMETEK INC COM 031100100 1,116,629 23,389 2.14 101,420 11.81 0.0394
2019-08-12 2019-03-31 13F/A-2 AMETEK INC COM 031100100 1,093,240 15,583 1.45 90,704 24.33 0.0361
2019-05-10 2019-03-31 13F AMETEK INC COM 031100100 1,093,240 15,583 90,704
2019-02-26 2018-12-31 13F/A-1 AMETEK INC COM 031100100 1,077,657 39,003 3.76 72,955 -11.22 0.0330
2019-02-13 2018-12-31 13F AMETEK INC COM 031100100 1,077,657 39,003 72,955
2018-11-13 2018-09-30 13F AMETEK INC COM 031100100 1,038,654 2,948 0.28 82,176 9.96 0.0313
2018-08-10 2018-06-30 13F AMETEK INC COM 031100100 1,035,706 9,120 0.89 74,735 -4.17 0.0298
2018-05-11 2018-03-31 13F AMETEK INC COM 031100100 1,026,586 4,636 0.45 77,990 5.30 0.0325
2018-02-12 2017-12-31 13F AMETEK INC COM 031100100 1,021,950 -44,336 -4.16 74,064 5.18 0.0307
2017-11-13 2017-09-30 13F AMETEK INC COM 031100100 1,066,286 596 0.06 70,415 9.09 0.0308
2017-08-11 2017-06-30 13F AMETEK INC COM 031100100 1,065,690 69,712 7.00 64,547 19.84 0.0298
2017-05-12 2017-03-31 13F AMETEK INC COM 031100100 995,978 12,361 1.26 53,862 12.67 0.0257
2017-02-09 2016-12-31 13F AMETEK INC COM 031100100 983,617 -5,911 -0.60 47,805 1.12 0.0239
2016-11-10 2016-09-30 13F AMETEK INC COM 031100100 989,528 29,884 3.11 47,277 6.57 0.0256
2016-08-09 2016-06-30 13F AMETEK INC COM 031100100 959,644 21,003 2.24 44,361 -5.44 0.0255
2016-05-13 2016-03-31 13F AMETEK INC COM 031100100 938,641 24,316 2.66 46,915 -4.26 0.0281
2016-02-10 2015-12-31 13F AMETEK INC COM 031100100 914,325 43,510 5.00 49,001 7.56 0.0305
2015-11-13 2015-09-30 13F AMETEK INC COM 031100100 870,815 33,239 3.97 45,558 -0.70 0.0299
2015-08-14 2015-06-30 13F AMETEK INC COM 031100100 837,576 92,656 12.44 45,881 17.23 0.0281
2015-05-14 2015-03-31 13F AMETEK INC COM 031100100 744,920 21,259 2.94 39,139 2.75 0.0247
2015-02-06 2014-12-31 13F AMETEK INC COM 031100100 723,661 103,162 16.63 38,090 22.24 0.0250
2014-11-13 2014-09-30 13F AMETEK INC COM 031100100 620,499 186,475 42.96 31,159 37.31 0.0221
2014-08-08 2014-06-30 13F AMETEK INC COM 031100100 434,024 14,260 3.40 22,693 4.99 0.0158
2014-05-14 2014-03-31 13F AMETEK INC COM 031100100 419,764 8,760 2.13 21,614 -0.15 0.0162
2014-02-12 2013-12-31 13F AMETEK INC COM 031100100 411,004 97,131 30.95 21,647 49.90 0.0169
2013-11-13 2013-09-30 13F AMETEK INC COM 031100100 313,873 20,601 7.02 14,441 16.42 0.0125
2013-08-15 2013-06-30 13F AMETEK INC COM 031100100 293,272 293,272 12,404 0.0117
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.