AMETEK, Inc.
MX ˙ BMV ˙ US0311001004
SecurityMX:AME / AMETEK, Inc.
InstitutionKorea Investment CORP
Latest Disclosed Ownership147,180 shares
Latest Disclosed Value $ 31,549,505
Korea Investment CORP reports 15.03% decrease in ownership of AME / AMETEK, Inc.

On May 13, 2026 - Korea Investment CORP filed a 13F-HR form disclosing ownership of 147,180 shares of AMETEK, Inc. (MX:AME) valued at $31,549,505 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 173,224 shares of AMETEK, Inc.. This represents a change in shares of -15.03% 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)
2026-05-13 2026-03-31 13F AMETEK COM 031100100 147,180 -26,044 -15.03 31,550 -11.29 0.0654
2026-02-13 2025-12-31 13F AMETEK COM 031100100 173,224 13,928 8.74 35,565 18.76 0.0700
2025-11-13 2025-09-30 13F AMETEK COM 031100100 159,296 -19,713 -11.01 29,948 -7.55 0.0616
2025-08-13 2025-06-30 13F AMETEK COM 031100100 179,009 -15,095 -7.78 32,393 -3.05 0.0721
2025-05-14 2025-03-31 13F AMETEK COM 031100100 194,104 37,606 24.03 33,413 18.44 0.0810
2025-02-12 2024-12-31 13F AMETEK COM 031100100 156,498 70,795 82.61 28,210 91.70 0.0669
2024-11-13 2024-09-30 13F AMETEK COM 031100100 85,703 20,048 30.54 14,716 34.45 0.0349
2024-08-13 2024-06-30 13F AMETEK COM 031100100 65,655 -61,774 -48.48 10,945 -53.04 0.0276
2024-05-14 2024-03-31 13F AMETEK COM 031100100 127,429 -24,113 -15.91 23,307 -6.73 0.0591
2024-02-13 2023-12-31 13F AMETEK COM 031100100 151,542 34,973 30.00 24,988 45.07 0.0656
2023-11-13 2023-09-30 13F AMETEK COM 031100100 116,569 -9,249 -7.35 17,224 -15.43 0.0507
2023-08-11 2023-06-30 13F AMETEK COM 031100100 125,818 -49,022 -28.04 20,367 -19.84 0.0572
2023-05-12 2023-03-31 13F AMETEK COM 031100100 174,840 -35,163 -16.74 25,409 -13.40 0.0740
2023-02-13 2022-12-31 13F AMETEK COM 031100100 210,003 40,636 23.99 29,342 52.75 0.0922
2022-11-10 2022-09-30 13F AMETEK COM 031100100 169,367 83,774 97.87 19,208 104.21 0.0591
2022-08-12 2022-06-30 13F AMETEK COM 031100100 85,593 55,693 186.26 9,406 136.21 0.0288
2022-05-13 2022-03-31 13F AMETEK COM 031100100 29,900 -19,400 -39.35 3,982 -45.07 0.0098
2022-02-09 2021-12-31 13F AMETEK COM 031100100 49,300 22,200 81.92 7,249 115.68 0.0188
2021-11-12 2021-09-30 13F AMETEK COM 031100100 27,100 -61,600 -69.45 3,361 -71.62 0.0100
2021-08-12 2021-06-30 13F AMETEK COM 031100100 88,700 36,100 68.63 11,841 76.23 0.0339
2021-05-13 2021-03-31 13F AMETEK COM 031100100 52,600 -15,600 -22.87 6,719 -18.54 0.0212
2021-02-10 2020-12-31 13F AMETEK COM 031100100 68,200 5,600 8.95 8,248 32.56 0.0248
2020-11-12 2020-09-30 13F AMETEK COM 031100100 62,600 900 1.46 6,222 12.84 0.0220
2020-08-12 2020-06-30 13F AMETEK COM 031100100 61,700 -29,873 -32.62 5,514 -16.39 0.0203
2020-05-14 2020-03-31 13F AMETEK COM 031100100 91,573 19,400 26.88 6,595 -8.39 0.0289
2020-02-11 2019-12-31 13F AMETEK INC COM 031100100 72,173 13,600 23.22 7,199 33.86 0.0262
2019-11-12 2019-09-30 13F AMETEK INC COM 031100100 58,573 -10,800 -15.57 5,378 -14.66 0.0227
2019-08-12 2019-06-30 13F AMETEK INC COM 031100100 69,373 -32,000 -31.57 6,302 -25.07 0.0271
2019-05-15 2019-03-31 13F AMETEK INC COM 031100100 101,373 -28,301 -21.82 8,411 -4.19 0.0379
2019-02-13 2018-12-31 13F AMETEK INC COM 031100100 129,674 -700 -0.54 8,779 -14.89 0.0477
2018-11-13 2018-09-30 13F AMETEK INC COM 031100100 130,374 72,952 127.05 10,315 148.91 0.0476
2018-08-13 2018-06-30 13F AMETEK INC COM 031100100 57,422 11,400 24.77 4,144 18.54 0.0189
2018-05-09 2018-03-31 13F AMETEK INC COM 031100100 46,022 -9,627 -17.30 3,496 -13.32 0.0163
2018-02-12 2017-12-31 13F AMETEK INC COM 031100100 55,649 15,000 36.90 4,033 50.26 0.0184
2017-10-25 2017-09-30 13F AMETEK INC COM 031100100 40,649 -2,500 -5.79 2,684 2.68 0.0124
2017-07-31 2017-06-30 13F AMETEK INC COM 031100100 43,149 42,257 4,737.33 2,614 5,345.83 0.0122
2017-04-25 2017-03-31 13F AMETEK INC COM 031100100 892 618 225.55 48 269.23 0.0002
2017-02-13 2016-12-31 13F AMETEK INC COM 031100100 274 274 0.00 13 0.0001
2016-05-12 2016-03-31 13F AMETEK INC COM 031100100 0 -17,700 -100.00 0 -100.00
2016-02-01 2015-12-31 13F AMETEK INC COM 031100100 17,700 -400 -2.21 948 0.21 0.0066
2015-11-12 2015-09-30 13F AMETEK INC COM 031100100 18,100 18,100 946 0.0075
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.