Amgen Inc.
CH ˙ SWX ˙ NL0000888691
SecurityCH:AMGN / Amgen Inc.
InstitutionBalboa Wealth Partners
Latest Disclosed Ownership887 shares
Latest Disclosed Value $ 311,993
Balboa Wealth Partners reports 7.22% decrease in ownership of AMGN / Amgen Inc.

On April 16, 2026 - Balboa Wealth Partners filed a 13F-HR form disclosing ownership of 887 shares of Amgen Inc. (CH:AMGN) valued at $311,993 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 16, 2026 disclosing 956 shares of Amgen Inc.. This represents a change in shares of -7.22% 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)
2026-04-16 2026-03-31 13F AMGEN COM 031162100 887 -69 -7.22 312 -0.32 0.0523
2026-01-16 2025-12-31 13F AMGEN COM 031162100 956 -79 -7.63 313 7.22 0.0518
2025-11-06 2025-09-30 13F AMGEN COM 031162100 1,035 49 4.97 292 5.82 0.0504
2025-07-29 2025-06-30 13F AMGEN COM 031162100 986 43 4.56 275 -6.14 0.0552
2025-04-23 2025-03-31 13F AMGEN COM 031162100 943 -6 -0.63 294 18.62 0.0709
2025-02-10 2024-12-31 13F AMGEN COM 031162100 949 -848 -47.19 247 -57.34 0.0564
2024-11-06 2024-09-30 13F AMGEN COM 031162100 1,797 603 50.50 579 55.23 0.1442
2024-08-13 2024-06-30 13F AMGEN COM 031162100 1,194 118 10.97 373 22.30 0.0985
2024-05-13 2024-03-31 13F AMGEN COM 031162100 1,076 -256 -19.22 306 -20.37 0.0901
2024-02-09 2023-12-31 13F AMGEN COM 031162100 1,332 386 40.80 384 50.79 0.1275
2023-10-23 2023-09-30 13F AMGEN COM 031162100 946 946 254 0.0954
2023-05-11 2023-03-31 13F AMGEN COM 031162100 0 -1,217 -100.00 0 -100.00
2023-02-14 2022-12-31 13F AMGEN COM 031162100 1,217 1,217 320 0.1441
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.