AMETEK, Inc.
MX ˙ BMV ˙ US0311001004
SecurityMX:AME / AMETEK, Inc.
InstitutionO'Brien Wealth Partners LLC
Latest Disclosed Ownership2,547 shares
Latest Disclosed Value $ 522,925
O'Brien Wealth Partners LLC ownership in AME / AMETEK, Inc.

On January 22, 2026 - O'Brien Wealth Partners LLC filed a 13F-HR form disclosing ownership of 2,547 shares of AMETEK, Inc. (MX:AME) valued at $522,925 USD as of December 31, 2025. The entity filed a previous 13F-HR on October 22, 2025 disclosing 2,547 shares of AMETEK, Inc.. This represents a change in shares of 0.00% 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)
2026-01-22 2025-12-31 13F AMETEK COM 031100100 2,547 0 0.00 523 9.21 0.0691
2025-10-22 2025-09-30 13F AMETEK COM 031100100 2,547 0 0.00 479 3.91 0.0649
2025-07-09 2025-06-30 13F AMETEK COM 031100100 2,547 0 0.00 461 5.02 0.0723
2025-04-28 2025-03-31 13F AMETEK COM 031100100 2,547 -31 -1.20 438 -5.60 0.0816
2025-01-28 2024-12-31 13F AMETEK COM 031100100 2,578 -250 -8.84 465 -4.33 0.0837
2024-10-23 2024-09-30 13F AMETEK COM 031100100 2,828 -52 -1.81 486 1.04 0.0952
2024-07-22 2024-06-30 13F AMETEK COM 031100100 2,880 -18 -0.62 480 -9.43 0.1079
2024-04-18 2024-03-31 13F AMETEK COM 031100100 2,898 0 0.00 530 11.11 0.1226
2024-01-25 2023-12-31 13F AMETEK COM 031100100 2,898 -713 -19.75 478 -10.51 0.1248
2023-10-24 2023-09-30 13F AMETEK COM 031100100 3,611 0 0.00 534 -8.73 0.1530
2023-08-07 2023-06-30 13F AMETEK COM 031100100 3,611 -12 -0.33 585 11.03 0.1721
2023-05-08 2023-03-31 13F AMETEK COM 031100100 3,623 4 0.11 527 4.16 0.1660
2023-02-10 2022-12-31 13F AMETEK COM 031100100 3,619 -1,111 -23.49 506 -5.78 0.2008
2022-11-14 2022-09-30 13F AMETEK COM 031100100 4,730 8 0.17 536 3.28 0.2255
2022-07-22 2022-06-30 13F AMETEK COM 031100100 4,722 -3 -0.06 519 -9.90 0.2168
2022-05-10 2022-03-31 13F AMETEK COM 031100100 4,725 -6 -0.13 576 -10.14 0.2286
2022-02-09 2021-12-31 13F AMETEK COM 031100100 4,731 4 0.08 641 8.09 0.2224
2021-10-07 2021-09-30 13F AMETEK COM 031100100 4,727 -87 -1.81 593 -9.05 0.2072
2021-07-12 2021-06-30 13F AMETEK COM 031100100 4,814 13 0.27 652 4.15 0.2157
2021-04-13 2021-03-31 13F AMETEK COM 031100100 4,801 60 1.27 626 6.83 0.2074
2021-01-11 2020-12-31 13F AMETEK COM 031100100 4,741 8 0.17 586 16.27 0.2117
2020-10-09 2020-09-30 13F AMETEK COM 031100100 4,733 15 0.32 504 23.83 0.2059
2020-07-10 2020-06-30 13F AMETEK COM 031100100 4,718 0 0.00 407 21.49 0.1695
2020-04-03 2020-03-31 13F AMETEK COM 031100100 4,718 -47 -0.99 335 -30.50 0.1882
2020-01-07 2019-12-31 13F AMETEK INC COM 031100100 4,765 47 1.00 482 11.32 0.3443
2019-10-04 2019-09-30 13F AMETEK INC COM 031100100 4,718 -1,538 -24.58 433 -24.04 0.3401
2019-07-08 2019-06-30 13F AMETEK INC COM 031100100 6,256 0 0.00 570 9.83 0.4169
2019-04-05 2019-03-31 13F AMETEK INC COM 031100100 6,256 0 0.00 519 17.95 0.3669
2019-01-17 2018-12-31 13F AMETEK INC COM 031100100 6,256 0 0.00 440 -11.11 0.3012
2018-10-09 2018-09-30 13F AMETEK INC COM 031100100 6,256 6,256 495 0.3216
2018-07-11 2018-06-30 13F AMETEK INC COM 031100100 0 -6,256 -100.00 0 -100.00
2018-04-11 2018-03-31 13F AMETEK INC COM 031100100 6,256 0 0.00 475 4.86 0.3269
2018-01-10 2017-12-31 13F/A-1 AMETEK INC COM 031100100 6,256 0 0.00 453 9.69 0.2859
2018-01-08 2017-12-31 13F AMETEK INC COM 031100100 6,256 0 413
2017-10-12 2017-09-30 13F AMETEK INC COM 031100100 6,256 0 0.00 413 8.97 0.2148
2017-07-06 2017-06-30 13F AMETEK INC COM 031100100 6,256 0 0.00 379 12.13 0.2001
2017-05-25 2017-03-31 13F AMETEK INC COM 031100100 6,256 0 0.00 338 11.18 0.1877
2017-01-11 2016-12-31 13F AMETEK INC COM 031100100 6,256 0 0.00 304 1.67 0.1818
2016-11-14 2016-09-30 13F AMETEK INC COM 031100100 6,256 0 0.00 299 3.46 0.1952
2016-11-14 2016-06-30 13F AMETEK INC COM 031100100 6,256 0 0.00 289 -7.67 0.2016
2016-11-14 2016-03-31 13F AMETEK INC COM 031100100 6,256 0 0.00 313 -6.57 0.2432
2016-11-14 2015-12-31 13F AMETEK INC COM 031100100 6,256 6,256 335 0.3275
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.