Amgen Inc.
MX ˙ BMV ˙ NL0000888691
SecurityMX:AMGN / Amgen Inc.
InstitutionCornerstone Advisory, LLC
Latest Disclosed Ownership2,013 shares
Latest Disclosed Value $ 708,401
Cornerstone Advisory, LLC reports 3.12% increase in ownership of AMGN / Amgen Inc.

On May 4, 2026 - Cornerstone Advisory, LLC filed a 13F-HR form disclosing ownership of 2,013 shares of Amgen Inc. (MX:AMGN) valued at $708,401 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 1,952 shares of Amgen Inc.. This represents a change in shares of 3.12% 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)
2026-05-04 2026-03-31 13F AMGEN COM 031162100 2,013 61 3.12 708 10.97 0.0671
2026-01-28 2025-12-31 13F AMGEN COM 031162100 1,952 -475 -19.57 639 -6.73 0.0609
2025-11-07 2025-09-30 13F AMGEN COM 031162100 2,427 6 0.25 685 1.18 0.0673
2025-07-30 2025-06-30 13F AMGEN COM 031162100 2,421 -316 -11.55 676 -8.65 0.0726
2025-05-07 2025-03-31 13F AMGEN COM 031162100 2,737 153 5.92 740 -1.60 0.0864
2025-02-18 2024-12-31 13F AMGEN COM 031162100 2,584 92 3.69 752 -6.23 0.0855
2024-11-12 2024-09-30 13F AMGEN COM 031162100 2,492 16 0.65 803 3.75 0.1056
2024-08-14 2024-06-30 13F AMGEN COM 031162100 2,476 8 0.32 773 10.27 0.1088
2024-05-08 2024-03-31 13F AMGEN COM 031162100 2,468 -36 -1.44 702 -2.77 0.1000
2024-02-13 2023-12-31 13F AMGEN COM 031162100 2,504 99 4.12 721 11.61 0.1124
2023-11-14 2023-09-30 13F AMGEN COM 031162100 2,405 27 1.14 646 22.58 0.1131
2023-07-20 2023-06-30 13F AMGEN COM 031162100 2,378 22 0.93 528 -7.38 0.0927
2023-05-04 2023-03-31 13F AMGEN COM 031162100 2,356 30 1.29 569 -6.72 0.1025
2023-02-13 2022-12-31 13F AMGEN COM 031162100 2,326 6 0.26 611 16.63 0.1203
2022-10-26 2022-09-30 13F AMGEN COM 031162100 2,320 0 0.00 523 -7.43 0.1168
2022-08-02 2022-06-30 13F AMGEN COM 031162100 2,320 0 0.00 565 0.71 0.1293
2022-05-20 2022-03-31 13F AMGEN COM 031162100 2,320 -779 -25.14 561 -19.63 0.0855
2022-02-23 2021-12-31 13F AMGEN COM 031162100 3,099 1,282 70.56 698 80.36 0.1003
2021-11-16 2021-09-30 13F AMGEN COM 031162100 1,817 1 0.06 387 -12.64 0.0641
2021-08-16 2021-06-30 13F AMGEN COM 031162100 1,816 -7 -0.38 443 -2.42 0.0746
2021-05-13 2021-03-31 13F AMGEN COM 031162100 1,823 -1,605 -46.82 454 -42.39 0.0859
2021-05-11 2020-12-31 13F AMGEN COM 031162100 3,428 228 7.12 788 -3.08 0.1595
2020-11-12 2020-09-30 13F AMGEN COM 031162100 3,200 300 10.34 813 18.86 0.1897
2020-08-10 2020-06-30 13F AMGEN COM 031162100 2,900 1,454 100.55 684 133.45 0.1784
2020-05-11 2020-03-31 13F AMGEN COM 031162100 1,446 -400 -21.67 293 -34.16 0.0891
2020-02-12 2019-12-31 13F AMGEN COM 031162100 1,846 -7 -0.38 445 23.96 0.0921
2019-11-12 2019-09-30 13F AMGEN COM 031162100 1,853 0 0.00 359 4.97 0.0775
2019-08-08 2019-06-30 13F AMGEN COM 031162100 1,853 -300 -13.93 342 -16.38 0.0741
2019-05-08 2019-03-31 13F AMGEN COM 031162100 2,153 -80 -3.58 409 -5.98 0.0900
2019-02-12 2018-12-31 13F AMGEN COM 031162100 2,233 7 0.31 435 -5.84 0.1141
2018-11-13 2018-09-30 13F AMGEN COM 031162100 2,226 -8 -0.36 462 12.14 0.1370
2018-08-09 2018-06-30 13F AMGEN COM 031162100 2,234 25 1.13 412 9.28 0.1356
2018-05-10 2018-03-31 13F AMGEN COM 031162100 2,209 -58 -2.56 377 -4.31 0.1358
2018-02-09 2017-12-31 13F AMGEN COM 031162100 2,267 7 0.31 394 -6.64 0.1350
2017-11-14 2017-09-30 13F AMGEN COM 031162100 2,260 -4 -0.18 422 8.21 0.1428
2017-08-08 2017-06-30 13F AMGEN COM 031162100 2,264 165 7.86 390 13.37 0.1305
2017-05-15 2017-03-31 13F AMGEN COM 031162100 2,099 2 0.10 344 12.05 0.1737
2017-02-13 2016-12-31 13F AMGEN COM 031162100 2,097 -1,209 -36.57 307 -44.38 0.2304
2016-11-10 2016-09-30 13F AMGEN COM 031162100 3,306 -183 -5.25 552 3.95 0.4533
2016-08-10 2016-06-30 13F AMGEN COM 031162100 3,489 3 0.09 531 1.53 0.4464
2016-05-16 2016-03-31 13F AMGEN COM 031162100 3,486 -131 -3.62 523 -10.90 0.4468
2016-03-03 2015-12-31 13F AMGEN COM 031162100 3,617 3,617 587 0.5055
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.