Amgen Inc.
CH ˙ SWX ˙ NL0000888691
SecurityCH:AMGN / Amgen Inc.
InstitutionGabelli Funds Llc
Latest Disclosed Ownership57,165 shares
Latest Disclosed Value $ 20,113,505
Gabelli Funds Llc reports 4.57% decrease in ownership of AMGN / Amgen Inc.

On May 14, 2026 - Gabelli Funds Llc filed a 13F-HR form disclosing ownership of 57,165 shares of Amgen Inc. (CH:AMGN) valued at $20,113,505 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 59,900 shares of Amgen Inc.. This represents a change in shares of -4.57% 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)
2026-05-14 2026-03-31 13F AMGEN EQUITY 031162100 57,165 -2,735 -4.57 20,114 2.59 0.1359
2026-02-05 2025-12-31 13F AMGEN EQUITY 031162100 59,900 -2,700 -4.31 19,606 10.98 0.1327
2025-11-12 2025-09-30 13F AMGEN EQUITY 031162100 62,600 -300 -0.48 17,666 0.59 0.1196
2025-08-13 2025-06-30 13F AMGEN EQUITY 031162100 62,900 -3,150 -4.77 17,562 -14.65 0.1247
2025-05-14 2025-03-31 13F AMGEN EQUITY 031162100 66,050 -1,300 -1.93 20,578 17.22 0.1568
2025-02-13 2024-12-31 13F AMGEN EQUITY 031162100 67,350 5,400 8.72 17,554 -12.05 0.1318
2024-11-13 2024-09-30 13F AMGEN EQUITY 031162100 61,950 10,570 20.57 19,961 24.34 0.1439
2024-08-13 2024-06-30 13F AMGEN EQUITY 031162100 51,380 -35 -0.07 16,054 9.82 0.1219
2024-05-14 2024-03-31 13F AMGEN EQUITY 031162100 51,415 15 0.03 14,618 -1.26 0.1077
2024-02-13 2023-12-31 13F AMGEN EQUITY 031162100 51,400 -2,150 -4.01 14,804 2.86 0.1140
2023-11-08 2023-09-30 13F AMGEN EQUITY 031162100 53,550 -670 -1.24 14,392 19.56 0.1168
2023-08-10 2023-06-30 13F AMGEN EQUITY 031162100 54,220 -530 -0.97 12,038 -9.05 0.0912
2023-05-12 2023-03-31 13F AMGEN EQUITY 031162100 54,750 275 0.50 13,236 -7.49 0.1003
2023-02-13 2022-12-31 13F AMGEN EQUITY 031162100 54,475 325 0.60 14,307 17.22 0.1112
2022-11-14 2022-09-30 13F/A-1 AMGEN COM 031162100 54,150 226 0.42 12,205 -6.97 0.1006
2022-11-10 2022-09-30 13F AMGEN COM 031162100 54,150 226 12,205 0.1006
2022-08-12 2022-06-30 13F AMGEN COM 031162100 53,924 0 0.00 13,120 0.61 0.1007
2022-05-18 2022-03-31 13F/A-1 AMGEN COM 031162100 53,924 0 0.00 13,040 7.49 0.0857
2022-05-13 2022-03-31 13F AMGEN COM 031162100 53,924 0 13,040 0.0880
2022-02-11 2021-12-31 13F AMGEN COM 031162100 53,924 0 0.00 12,131 5.79 0.0766
2021-11-12 2021-09-30 13F AMGEN COM 031162100 53,924 -175 -0.32 11,467 -13.04 0.0760
2021-08-13 2021-06-30 13F AMGEN COM 031162100 54,099 0 0.00 13,187 -2.03 0.0840
2021-05-14 2021-03-31 13F AMGEN COM 031162100 54,099 599 1.12 13,460 9.42 0.0902
2021-02-05 2020-12-31 13F AMGEN COM 031162100 53,500 0 0.00 12,301 -9.54 0.0876
2020-11-06 2020-09-30 13F AMGEN COM 031162100 53,500 -350 -0.65 13,598 7.06 0.1059
2020-08-13 2020-06-30 13F AMGEN COM 031162100 53,850 -550 -1.01 12,701 15.16 0.1035
2020-05-14 2020-03-31 13F AMGEN COM 031162100 54,400 -1,100 -1.98 11,029 -17.56 0.0983
2020-02-14 2019-12-31 13F AMGEN COM 031162100 55,500 -3,000 -5.13 13,379 18.19 0.0865
2019-11-01 2019-09-30 13F AMGEN COM 031162100 58,500 -4,000 -6.40 11,320 -1.72 0.0748
2019-08-02 2019-06-30 13F AMGEN COM 031162100 62,500 0 0.00 11,518 -3.00 0.0739
2019-05-02 2019-03-31 13F AMGEN COM 031162100 62,500 0 0.00 11,874 -2.41 0.0747
2019-01-30 2018-12-31 13F AMGEN COM 031162100 62,500 -2,000 -3.10 12,167 -9.00 0.0834
2018-11-02 2018-09-30 13F AMGEN COM 031162100 64,500 0 0.00 13,370 12.30 0.0767
2018-08-10 2018-06-30 13F AMGEN COM 031162100 64,500 0 0.00 11,906 8.28 0.0705
2018-05-09 2018-03-31 13F AMGEN COM 031162100 64,500 0 0.00 10,996 -1.97 0.0656
2018-02-02 2017-12-31 13F AMGEN COM 031162100 64,500 0 0.00 11,217 -6.73 0.0646
2017-11-01 2017-09-30 13F AMGEN COM 031162100 64,500 -63,700 -49.69 12,026 -45.53 0.0689
2017-08-03 2017-06-30 13F AMGEN COM 031162100 128,200 -10,000 -7.24 22,080 -2.62 0.1312
2017-05-04 2017-03-31 13F AMGEN COM 031162100 138,200 -11,500 -7.68 22,674 3.59 0.1337
2017-02-10 2016-12-31 13F AMGEN COM 031162100 149,700 200 0.13 21,888 -12.23 0.1295
2016-11-10 2016-09-30 13F AMGEN COM 031162100 149,500 -27,500 -15.54 24,938 -7.40 0.1480
2016-08-04 2016-06-30 13F AMGEN COM 031162100 177,000 0 0.00 26,931 1.48 0.1589
2016-05-05 2016-03-31 13F AMGEN COM 031162100 177,000 -8,800 -4.74 26,538 -12.01 0.1600
2016-02-05 2015-12-31 13F AMGEN COM 031162100 185,800 -3,000 -1.59 30,161 15.49 0.1826
2015-10-23 2015-09-30 13F AMGEN COM 031162100 188,800 -1,500 -0.79 26,115 -10.61 0.1552
2015-08-05 2015-06-30 13F AMGEN COM 031162100 190,300 -400 -0.21 29,215 -4.16 0.1529
2015-05-01 2015-03-31 13F AMGEN COM 031162100 190,700 2,600 1.38 30,483 1.74 0.1547
2015-02-05 2014-12-31 13F AMGEN COM 031162100 188,100 -11,000 -5.52 29,962 7.14 0.1457
2014-10-30 2014-09-30 13F AMGEN COM 031162100 199,100 3,500 1.79 27,966 20.79 0.1419
2014-08-06 2014-06-30 13F AMGEN COM 031162100 195,600 2,700 1.40 23,153 -2.69 0.1144
2014-05-16 2014-03-31 13F/A-1 AMGEN COM 031162100 192,900 10,000 5.47 23,792 14.03 0.1235
2014-05-02 2014-03-31 13F AMGEN COM 031162100 192,900 23,792
2014-02-07 2013-12-31 13F AMGEN COM 031162100 182,900 -3,700 -1.98 20,865 -0.10 0.1111
2013-11-07 2013-09-30 13F AMGEN COM 031162100 186,600 -1,300 -0.69 20,885 12.66 0.1189
2013-08-02 2013-06-30 13F/A-1 AMGEN COM 031162100 187,900 187,900 18,538 0.1125
2013-08-01 2013-06-30 13F AMGEN COM 031162100 187,900 18,538 0.1125
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.