Amgen Inc.
MX ˙ BMV ˙ NL0000888691
SecurityMX:AMGN / Amgen Inc.
InstitutionRossmore Private Capital
Latest Disclosed Ownership5,635 shares
Latest Disclosed Value $ 1,982,710
Rossmore Private Capital reports 0.56% decrease in ownership of AMGN / Amgen Inc.

On May 1, 2026 - Rossmore Private Capital filed a 13F-HR form disclosing ownership of 5,635 shares of Amgen Inc. (MX:AMGN) valued at $1,982,710 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 5,667 shares of Amgen Inc.. This represents a change in shares of -0.56% 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)
2026-05-01 2026-03-31 13F AMGEN COM 031162100 5,635 -32 -0.56 1,983 6.90 0.1740
2026-02-05 2025-12-31 13F AMGEN COM 031162100 5,667 1,195 26.72 1,855 46.91 0.1652
2025-10-30 2025-09-30 13F AMGEN COM 031162100 4,472 421 10.39 1,262 11.58 0.1360
2025-08-07 2025-06-30 13F AMGEN COM 031162100 4,051 102 2.58 1,131 -8.05 0.1320
2025-05-13 2025-03-31 13F AMGEN COM 031162100 3,949 -30 -0.75 1,230 18.61 0.1515
2025-02-13 2024-12-31 13F AMGEN COM 031162100 3,979 -29 -0.72 1,037 -19.67 0.1282
2024-11-05 2024-09-30 13F AMGEN COM 031162100 4,008 0 0.00 1,291 3.12 0.1596
2024-08-12 2024-06-30 13F AMGEN COM 031162100 4,008 0 0.00 1,252 9.92 0.1645
2024-05-13 2024-03-31 13F AMGEN COM 031162100 4,008 0 0.00 1,140 -1.30 0.1491
2024-02-07 2023-12-31 13F AMGEN COM 031162100 4,008 -115 -2.79 1,154 4.15 0.1631
2023-11-13 2023-09-30 13F AMGEN COM 031162100 4,123 50 1.23 1,108 22.57 0.1679
2023-08-14 2023-06-30 13F AMGEN COM 031162100 4,073 45 1.12 904 -7.09 0.1345
2023-05-02 2023-03-31 13F AMGEN COM 031162100 4,028 -5 -0.12 974 -8.12 0.1521
2023-02-14 2022-12-31 13F AMGEN COM 031162100 4,033 166 4.29 1,059 0.1696
2022-11-08 2022-09-30 13F AMGEN COM 031162100 3,867 243 6.71 1 0.1561
2022-08-11 2022-06-30 13F AMGEN COM 031162100 3,624 619 20.60 1 0.1527
2022-05-09 2022-03-31 13F AMGEN COM 031162100 3,005 -51 -1.67 1 0.1132
2022-02-07 2021-12-31 13F AMGEN COM 031162100 3,056 -140 -4.38 1 0.1074
2021-11-08 2021-09-30 13F AMGEN COM 031162100 3,196 100 3.23 1 0.1164
2021-08-13 2021-06-30 13F AMGEN COM 031162100 3,096 -99 -3.10 1 0.1292
2021-05-10 2021-03-31 13F AMGEN COM 031162100 3,195 -978 -23.44 1 0.1490
2021-02-10 2020-12-31 13F AMGEN COM 031162100 4,173 18 0.43 1 -100.00 0.1944
2020-11-10 2020-09-30 13F AMGEN COM 031162100 4,155 300 7.78 1 -99.89 0.2482
2020-08-05 2020-06-30 13F AMGEN COM 031162100 3,855 682 21.49 909 41.37 0.2511
2020-05-07 2020-03-31 13F AMGEN COM 031162100 3,173 -52 -1.61 643 -17.25 0.2223
2020-02-10 2019-12-31 13F AMGEN COM 031162100 3,225 0 0.00 777 24.52 0.2397
2019-11-05 2019-09-30 13F AMGEN COM 031162100 3,225 30 0.94 624 5.94 0.2098
2019-08-05 2019-06-30 13F AMGEN COM 031162100 3,195 0 0.00 589 -2.97 0.2081
2019-04-30 2019-03-31 13F AMGEN COM 031162100 3,195 150 4.93 607 2.36 0.2235
2019-01-22 2018-12-31 13F AMGEN COM 031162100 3,045 200 7.03 593 0.51 0.2513
2018-10-26 2018-09-30 13F AMGEN COM 031162100 2,845 570 25.05 590 40.48 0.2359
2018-07-20 2018-06-30 13F AMGEN COM 031162100 2,275 0 0.00 420 8.25 0.2711
2018-05-04 2018-03-31 13F AMGEN COM 031162100 2,275 1,100 93.62 388 90.20 0.3927
2018-03-15 2017-12-31 13F AMGEN INC COM COM 031162100 1,175 1,175 204 0.2059
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.