AMETEK, Inc.
MX ˙ BMV ˙ US0311001004
SecurityMX:AME / AMETEK, Inc.
InstitutionWellington Management Group Llp
Latest Disclosed Ownership2,797,091 shares
Latest Disclosed Value $ 599,584,427
Wellington Management Group Llp reports 0.38% decrease in ownership of AME / AMETEK, Inc.

On May 15, 2026 - Wellington Management Group Llp filed a 13F-HR form disclosing ownership of 2,797,091 shares of AMETEK, Inc. (MX:AME) valued at $599,584,427 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 2,807,664 shares of AMETEK, Inc.. This represents a change in shares of -0.38% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-15 2026-03-31 13F AMETEK COM 031100100 2,797,091 -10,573 -0.38 599,584 4.01 0.0159
2026-02-17 2025-12-31 13F AMETEK COM 031100100 2,807,664 2,110,818 302.91 576,441 340.01 0.1010
2025-11-14 2025-09-30 13F AMETEK COM 031100100 696,846 -199,533 -22.26 131,007 -19.24 0.0229
2025-08-14 2025-06-30 13F AMETEK COM 031100100 896,379 -28,774 -3.11 162,209 1.85 0.0294
2025-05-13 2025-03-31 13F AMETEK COM 031100100 925,153 -14,768 -1.57 159,256 -6.01 0.0306
2025-02-12 2024-12-31 13F AMETEK COM 031100100 939,921 -17,400 -1.82 169,430 3.07 0.0310
2024-11-14 2024-09-30 13F AMETEK COM 031100100 957,321 -61,500 -6.04 164,382 -3.22 0.0288
2024-08-14 2024-06-30 13F AMETEK COM 031100100 1,018,821 -184,631 -15.34 169,848 -22.84 0.0303
2024-05-15 2024-03-31 13F AMETEK COM 031100100 1,203,452 -388,521 -24.40 220,111 -16.15 0.0390
2024-02-12 2023-12-31 13F AMETEK COM 031100100 1,591,973 -324,651 -16.94 262,500 -7.31 0.0490
2023-11-14 2023-09-30 13F AMETEK COM 031100100 1,916,624 -545,020 -22.14 283,200 -28.93 0.0568
2023-08-14 2023-06-30 13F AMETEK COM 031100100 2,461,644 -81,809 -3.22 398,491 7.80 0.0755
2023-05-12 2023-03-31 13F AMETEK COM 031100100 2,543,453 -114,603 -4.31 369,640 -0.47 0.0733
2023-02-13 2022-12-31 13F AMETEK COM 031100100 2,658,056 471,301 21.55 371,384 49.75 0.0745
2022-11-14 2022-09-30 13F AMETEK COM 031100100 2,186,755 299,689 15.88 248,001 19.59 0.0528
2022-08-15 2022-06-30 13F AMETEK COM 031100100 1,887,066 -167,238 -8.14 207,370 -24.20 0.0418
2022-05-16 2022-03-31 13F AMETEK COM 031100100 2,054,304 373,148 22.20 273,593 10.68 0.0468
2022-02-11 2021-12-31 13F AMETEK COM 031100100 1,681,156 15,905 0.96 247,197 19.70 0.0395
2021-11-15 2021-09-30 13F AMETEK COM 031100100 1,665,251 146,199 9.62 206,509 1.83 0.0351
2021-08-16 2021-06-30 13F AMETEK COM 031100100 1,519,052 -98,855 -6.11 202,795 -1.87 0.0338
2021-05-17 2021-03-31 13F AMETEK COM 031100100 1,617,907 108,770 7.21 206,656 13.23 0.0364
2021-02-12 2020-12-31 13F AMETEK COM 031100100 1,509,137 -399,005 -20.91 182,514 -3.77 0.0336
2020-11-16 2020-09-30 13F AMETEK COM 031100100 1,908,142 -602,831 -24.01 189,669 -15.48 0.0393
2020-08-14 2020-06-30 13F AMETEK COM 031100100 2,510,973 -936,714 -27.17 224,405 -9.62 0.0500
2020-05-14 2020-03-31 13F AMETEK COM 031100100 3,447,687 -469,315 -11.98 248,302 -36.44 0.0657
2020-02-11 2019-12-31 13F AMETEK INC COM 031100100 3,917,002 -658,988 -14.40 390,681 -7.02 0.0819
2019-11-13 2019-09-30 13F AMETEK INC COM 031100100 4,575,990 -1,749,186 -27.65 420,167 -26.87 0.0947
2019-08-14 2019-06-30 13F AMETEK INC COM 031100100 6,325,176 -280,559 -4.25 574,580 4.84 0.1272
2019-05-15 2019-03-31 13F AMETEK INC COM 031100100 6,605,735 322,224 5.13 548,078 28.84 0.1241
2019-02-14 2018-12-31 13F AMETEK INC COM 031100100 6,283,511 619,761 10.94 425,393 -5.07 0.1065
2018-11-14 2018-09-30 13F AMETEK INC COM 031100100 5,663,750 317,116 5.93 448,116 16.15 0.0944
2018-08-14 2018-06-30 13F AMETEK INC COM 031100100 5,346,634 -1,668,140 -23.78 385,814 -27.60 0.0859
2018-05-15 2018-03-31 13F AMETEK INC COM 031100100 7,014,774 -1,041,058 -12.92 532,913 -8.72 0.1206
2018-02-13 2017-12-31 13F AMETEK INC COM 031100100 8,055,832 -1,508,353 -15.77 583,808 -7.57 0.1290
2017-11-13 2017-09-30 13F AMETEK INC COM 031100100 9,564,185 -508,094 -5.04 631,618 3.53 0.1450
2017-08-14 2017-06-30 13F AMETEK INC COM 031100100 10,072,279 -456,028 -4.33 610,078 7.15 0.1437
2017-05-11 2017-03-31 13F AMETEK INC COM 031100100 10,528,307 868,895 9.00 569,372 21.29 0.1371
2017-02-14 2016-12-31 13F AMETEK INC COM 031100100 9,659,412 3,064,322 46.46 469,447 48.98 0.1178
2016-11-14 2016-09-30 13F AMETEK INC COM 031100100 6,595,090 1,423,980 27.54 315,114 31.81 0.0789
2016-08-15 2016-06-30 13F AMETEK INC COM 031100100 5,171,110 195,698 3.93 239,061 -3.86 0.0618
2016-05-13 2016-03-31 13F AMETEK INC COM 031100100 4,975,412 -2,199,823 -30.66 248,671 -35.33 0.0654
2016-02-12 2015-12-31 13F AMETEK INC COM 031100100 7,175,235 18,688 0.26 384,522 2.69 0.1006
2015-11-16 2015-09-30 13F AMETEK INC COM 031100100 7,156,547 470,590 7.04 374,432 2.23 0.1044
2015-08-14 2015-06-30 13F AMETEK INC COM 031100100 6,685,957 695,651 11.61 366,256 16.37 0.0945
2015-05-15 2015-03-31 13F AMETEK INC COM 031100100 5,990,306 868,485 16.96 314,730 16.76 0.0809
2015-02-13 2014-12-31 13F AMETEK INC COM 031100100 5,121,821 29,435 0.58 269,561 5.43 0.0713
2014-11-14 2014-09-30 13F AMETEK INC COM 031100100 5,092,386 -2,404,345 -32.07 255,688 -34.76 0.0704
2014-08-14 2014-06-30 13F AMETEK INC COM 031100100 7,496,731 125,664 1.70 391,929 3.27 0.1054
2014-05-15 2014-03-31 13F AMETEKINCNEW COM 031100100 7,371,067 -146,994 -1.96 379,537 -4.15 0.1053
2014-02-14 2013-12-31 13F AMETEK INC COM 031100100 7,518,061 909,022 13.75 395,976 30.19 0.1139
2013-11-14 2013-09-30 13F AMETEK INC COM 031100100 6,609,039 -747,273 -10.16 304,149 -2.26 0.0952
2013-08-14 2013-06-30 13F AMETEK INC COM 031100100 7,356,312 7,356,312 311,171 0.1016
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.