AMETEK, Inc.
MX ˙ BMV ˙ US0311001004
SecurityMX:AME / AMETEK, Inc.
InstitutionMagnetar Financial LLC
Latest Disclosed Ownership4,926 shares
Latest Disclosed Value $ 1,026,431
Magnetar Financial LLC ownership in AME / AMETEK, Inc.

On May 13, 2026 - Magnetar Financial LLC filed a 13F-HR form disclosing ownership of 4,926 shares of AMETEK, Inc. (MX:AME) valued at $1,026,431 USD as of March 31, 2026. The entity filed a previous 13F-HR on November 13, 2025 disclosing 0 shares of AMETEK, Inc..

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 4,926 4,926 1,026 0.0094
2025-11-13 2025-09-30 13F AMETEK COM 031100100 0 -47,226 -100.00 0 -100.00
2025-08-12 2025-06-30 13F AMETEK COM 031100100 47,226 -19,818 -29.56 8,546 -25.94 0.0414
2025-05-15 2025-03-31 13F AMETEK COM 031100100 67,044 59,246 759.76 11,541 721.35 0.1516
2025-02-11 2024-12-31 13F AMETEK COM 031100100 7,798 1,268 19.42 1,406 25.33 0.0323
2024-11-13 2024-09-30 13F AMETEK COM 031100100 6,530 6,530 1,121 0.0243
2024-08-14 2024-06-30 13F AMETEK COM 031100100 0 -2,919 -100.00 0 -100.00
2024-05-15 2024-03-31 13F AMETEK COM 031100100 2,919 2,919 534 0.0120
2024-02-13 2023-12-31 13F AMETEK COM 031100100 0 -14,972 -100.00 0 -100.00
2023-11-14 2023-09-30 13F AMETEK COM 031100100 14,972 14,972 2,212 0.0565
2023-08-11 2023-06-30 13F AMETEK COM 031100100 0 -13,822 -100.00 0 -100.00
2023-05-15 2023-03-31 13F AMETEK COM 031100100 13,822 13,822 2,009 0.0392
2023-02-14 2022-12-31 13F AMETEK COM 031100100 0 -5,306 -100.00 0 -100.00
2022-11-14 2022-09-30 13F AMETEK COM 031100100 5,306 -28,331 -84.23 602 -83.71 0.0083
2022-08-15 2022-06-30 13F AMETEK COM 031100100 33,637 28,960 619.20 3,696 493.26 0.0382
2022-05-16 2022-03-31 13F AMETEK COM 031100100 4,677 4,677 623 0.0066
2022-02-14 2021-12-31 13F AMETEK COM 031100100 0 -13,351 -100.00 0 -100.00
2022-01-14 2021-09-30 13F/A-1 AMETEK COM 031100100 13,351 10,824 428.33 1,656 391.39 0.0169
2021-11-12 2021-09-30 13F AMETEK COM 031100100 13,351 10,824 1,656 0.0169
2021-08-06 2021-06-30 13F AMETEK COM 031100100 2,527 2,527 337 0.0032
2021-02-12 2020-12-31 13F AMETEK COM 031100100 0 -2,400 -100.00 0 -100.00
2020-11-16 2020-09-30 13F AMETEK COM 031100100 2,400 2,400 239 0.0042
2020-08-14 2020-06-30 13F AMETEK COM 031100100 0 -5,439 -100.00 0 -100.00
2020-05-15 2020-03-31 13F AMETEK COM 031100100 5,439 5,439 392 0.0094
2019-11-14 2019-09-30 13F AMETEK INC COM 031100100 0 -2,621 -100.00 0 -100.00
2019-08-14 2019-06-30 13F AMETEK INC COM 031100100 2,621 2,621 238 0.0048
2019-02-14 2018-09-30 13F/A-1 AMETEK INC COM 031100100 0 -6,369 -100.00 0 -100.00
2018-08-14 2018-06-30 13F AMETEK INC COM 031100100 6,369 -626 -8.95 460 -13.37 0.0089
2018-05-15 2018-03-31 13F AMETEK INC COM 031100100 6,995 -268 -3.69 531 0.95 0.0134
2018-02-14 2017-12-31 13F AMETEK INC COM 031100100 7,263 1,652 29.44 526 41.78 0.0129
2017-11-14 2017-09-30 13F AMETEK INC COM 031100100 5,611 -50,426 -89.99 371 -89.07 0.0083
2017-08-14 2017-06-30 13F AMETEK INC COM 031100100 56,037 22,466 66.92 3,394 86.89 0.0602
2017-05-15 2017-03-31 13F AMETEK INC COM 031100100 33,571 23,391 229.77 1,816 266.87 0.0289
2017-02-14 2016-12-31 13F AMETEK INC COM 031100100 10,180 -7,297 -41.75 495 -40.72 0.0067
2016-11-14 2016-09-30 13F AMETEK INC COM 031100100 17,477 17,477 71.68 835 68.69 0.0129
2016-08-15 2016-06-30 13F * AMETEK INC COM 031100100 0 -5,428 -100.00 0 -100.00
2016-05-16 2016-03-31 13F * AMETEK INC COM 031100100 5,428 5,428 271 0.0054
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.