Amgen Inc.
CH ˙ SWX ˙ NL0000888691
SecurityCH:AMGN / Amgen Inc.
InstitutionGreat Valley Advisor Group, Inc.
Latest Disclosed Ownership12,193 shares
Latest Disclosed Value $ 4,290,117
Great Valley Advisor Group, Inc. reports 9.41% increase in ownership of AMGN / Amgen Inc.

On May 11, 2026 - Great Valley Advisor Group, Inc. filed a 13F-HR form disclosing ownership of 12,193 shares of Amgen Inc. (CH:AMGN) valued at $4,290,117 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 11,144 shares of Amgen Inc.. This represents a change in shares of 9.41% 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)
2026-05-11 2026-03-31 13F AMGEN COM 031162100 12,193 1,049 9.41 4,290 17.63 0.0780
2026-02-12 2025-12-31 13F AMGEN COM 031162100 11,144 190 1.73 3,647 18.03 0.0701
2025-11-14 2025-09-30 13F AMGEN COM 031162100 10,954 1,303 13.50 3,091 14.66 0.0620
2025-08-14 2025-06-30 13F AMGEN COM 031162100 9,651 -494 -4.87 2,695 -14.72 0.0597
2025-05-08 2025-03-31 13F AMGEN COM 031162100 10,145 -9,206 -47.57 3,161 -37.34 0.0680
2025-02-24 2024-12-31 13F AMGEN COM 031162100 19,351 1,443 8.06 5,043 -12.60 0.1129
2024-11-12 2024-09-30 13F AMGEN COM 031162100 17,908 10,136 130.42 5,770 137.64 0.1418
2024-07-16 2024-06-30 13F AMGEN COM 031162100 7,772 686 9.68 2,429 20.56 0.0680
2024-05-06 2024-03-31 13F AMGEN COM 031162100 7,086 71 1.01 2,014 -0.30 0.0612
2024-02-06 2023-12-31 13F AMGEN COM 031162100 7,015 155 2.26 2,021 9.60 0.0709
2023-11-07 2023-09-30 13F AMGEN COM 031162100 6,860 -284 -3.98 1,844 16.28 0.0764
2023-08-10 2023-06-30 13F AMGEN COM 031162100 7,144 -554 -7.20 1,586 -14.83 0.0665
2023-05-03 2023-03-31 13F AMGEN COM 031162100 7,698 1,020 15.27 1,862 6.10 0.0868
2023-02-01 2022-12-31 13F AMGEN COM 031162100 6,678 -150 -2.20 1,754 13.97 0.0896
2022-10-21 2022-09-30 13F AMGEN COM 031162100 6,828 -112 -1.61 1,539 -8.88 0.0862
2022-07-19 2022-06-30 13F AMGEN COM 031162100 6,940 580 9.12 1,689 10.90 0.0928
2022-04-20 2022-03-31 13F AMGEN COM 031162100 6,360 -17 -0.27 1,523 6.88 0.0888
2022-02-10 2021-12-31 13F AMGEN COM 031162100 6,377 -371 -5.50 1,425 -0.70 0.0881
2021-10-14 2021-09-30 13F AMGEN COM 031162100 6,748 76 1.14 1,435 -11.96 0.0989
2021-07-27 2021-06-30 13F AMGEN COM 031162100 6,672 31 0.47 1,630 -1.33 0.1205
2021-04-20 2021-03-31 13F AMGEN COM 031162100 6,641 -116 -1.72 1,652 6.37 0.1590
2021-01-29 2020-12-31 13F AMGEN COM 031162100 6,757 359 5.61 1,553 -4.43 0.1607
2020-10-21 2020-09-30 13F AMGEN COM 031162100 6,398 115 1.83 1,625 9.65 0.1994
2020-07-31 2020-06-30 13F AMGEN COM 031162100 6,283 596 10.48 1,482 28.53 0.2426
2020-05-15 2020-03-31 13F AMGEN COM 031162100 5,687 -43 -0.75 1,153 -16.51 0.3054
2020-02-10 2019-12-31 13F AMGEN COM 031162100 5,730 52 0.92 1,381 25.77 0.3075
2019-10-25 2019-09-30 13F AMGEN COM 031162100 5,678 3 0.05 1,098 4.97 0.2650
2019-07-30 2019-06-30 13F AMGEN COM 031162100 5,675 -266 -4.48 1,046 -7.35 0.2628
2019-04-26 2019-03-31 13F AMGEN COM 031162100 5,941 97 1.66 1,129 -0.79 0.3593
2019-04-11 2018-12-31 13F AMGEN COM 031162100 5,844 5,844 1,138 0.4251
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.