Amgen Inc.
US ˙ NasdaqGS ˙ US0311621009

SecurityAMGN / Amgen Inc.
InstitutionOppenheimer & Co Inc
Latest Disclosed Ownership119,841 shares
Latest Disclosed Value $ 42,166,056
Oppenheimer & Co Inc ownership in AMGN / Amgen Inc.

On April 23, 2026 - Oppenheimer & Co Inc filed a 13F-HR form disclosing ownership of 119,841 shares of Amgen Inc. (US:AMGN) valued at $42,166,056 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 0 shares of Amgen Inc.. The current value of the position is $40,532,623 USD.

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)
2026-04-23 2026-03-31 13F AMGEN COM 031162100 119,841 119,841 42,166 0.5136
2026-02-02 2025-12-31 13F AMGEN COM 031162100 0 -113,123 -100.00 0 -100.00
2025-11-06 2025-09-30 13F AMGEN COM 031162100 113,123 2,111 1.90 31,923 2.99 0.3894
2025-07-31 2025-06-30 13F AMGEN COM 031162100 111,012 1,179 1.07 30,996 -9.42 0.4099
2025-04-23 2025-03-31 13F AMGEN COM 031162100 109,833 -1,335 -1.20 34,218 18.10 0.5166
2025-02-05 2024-12-31 13F AMGEN COM 031162100 111,168 -11,384 -9.29 28,975 -26.62 0.4324
2024-11-05 2024-09-30 13F AMGEN COM 031162100 122,552 -1,086 -0.88 39,487 2.22 0.6022
2024-08-08 2024-06-30 13F AMGEN COM 031162100 123,638 2,483 2.05 38,631 12.15 0.6132
2024-05-07 2024-03-31 13F AMGEN COM 031162100 121,155 8,874 7.90 34,447 6.52 0.5712
2024-02-13 2023-12-31 13F AMGEN COM 031162100 112,281 3,413 3.13 32,339 10.53 0.5943
2023-11-08 2023-09-30 13F AMGEN COM 031162100 108,868 2,651 2.50 29,259 24.07 0.6040
2023-08-03 2023-06-30 13F AMGEN COM 031162100 106,217 1,763 1.69 23,582 -6.61 0.4718
2023-05-10 2023-03-31 13F AMGEN COM 031162100 104,454 16,848 19.23 25,252 9.75 0.5355
2023-02-08 2022-12-31 13F AMGEN COM 031162100 87,606 -6,259 -6.67 23,009 8.75 0.5238
2022-11-14 2022-09-30 13F AMGEN COM 031162100 93,865 1,370 1.48 21,157 -5.99 0.4949
2022-08-08 2022-06-30 13F AMGEN COM 031162100 92,495 -2,793 -2.93 22,505 -2.33 0.4845
2022-05-12 2022-03-31 13F AMGEN COM 031162100 95,288 -2,143 -2.20 23,043 5.12 0.4153
2022-02-02 2021-12-31 13F AMGEN COM 031162100 97,431 4,753 5.13 21,920 11.22 0.3833
2021-11-12 2021-09-30 13F AMGEN COM 031162100 92,678 -1,301 -1.38 19,709 -13.96 0.3689
2021-08-03 2021-06-30 13F AMGEN COM 031162100 93,979 1,457 1.57 22,907 -0.49 0.4106
2021-05-10 2021-03-31 13F AMGEN COM 031162100 92,522 9,879 11.95 23,020 21.15 0.4594
2021-02-11 2020-12-31 13F AMGEN COM 031162100 82,643 -779 -0.93 19,001 -10.38 0.4009
2020-11-13 2020-09-30 13F AMGEN COM 031162100 83,422 -13,037 -13.52 21,202 -6.81 0.5305
2020-08-11 2020-06-30 13F AMGEN COM 031162100 96,459 -17,306 -15.21 22,751 -1.36 0.5886
2020-05-08 2020-03-31 13F AMGEN COM 031162100 113,765 3,599 3.27 23,064 -13.16 0.7002
2020-02-07 2019-12-31 13F AMGEN COM 031162100 110,166 -1,695 -1.52 26,558 22.69 0.6577
2019-10-31 2019-09-30 13F AMGEN COM 031162100 111,861 628 0.56 21,646 5.60 0.5897
2019-08-09 2019-06-30 13F AMGEN COM 031162100 111,233 -13,387 -10.74 20,498 -13.43 0.5570
2019-04-24 2019-03-31 13F AMGEN COM 031162100 124,620 -553 -0.44 23,677 -2.83 0.6325
2019-01-29 2018-12-31 13F AMGEN COM 031162100 125,173 -2,398 -1.88 24,367 -7.85 0.7618
2018-10-26 2018-09-30 13F AMGEN COM 031162100 127,571 -4,121 -3.13 26,444 8.78 0.6731
2018-08-10 2018-06-30 13F AMGEN COM 031162100 131,692 -1,279 -0.96 24,309 7.24 0.6598
2018-05-01 2018-03-31 13F AMGEN COM 031162100 132,971 -18,175 -12.02 22,668 -13.76 0.5823
2018-02-07 2017-12-31 13F AMGEN COM 031162100 151,146 10,834 7.72 26,285 0.48 0.6766
2017-11-09 2017-09-30 13F AMGEN COM 031162100 140,312 -31,236 -18.21 26,160 -11.46 0.7002
2017-08-09 2017-06-30 13F AMGEN COM 031162100 171,548 8,888 5.46 29,546 10.71 0.8145
2017-05-15 2017-03-31 13F AMGEN COM 031162100 162,660 16,589 11.36 26,688 24.96 0.7554
2017-02-01 2016-12-31 13F AMGEN COM 031162100 146,071 1,958 1.36 21,358 -11.15 0.6218
2016-11-07 2016-09-30 13F AMGEN COM 031162100 144,113 742 0.52 24,039 10.19 0.7008
2016-08-08 2016-06-30 13F AMGEN COM 031162100 143,371 23,997 20.10 21,815 21.89 0.6503
2016-04-26 2016-03-31 13F AMGEN COM 031162100 119,374 -3,726 -3.03 17,898 -10.43 0.5435
2016-02-03 2015-12-31 13F AMGEN COM 031162100 123,100 -6,161 -4.77 19,983 11.76 0.5946
2015-11-13 2015-09-30 13F AMGEN COM 031162100 129,261 1,108 0.86 17,880 -9.12 0.5432
2015-08-12 2015-06-30 13F AMGEN COM 031162100 128,153 8,201 6.84 19,674 2.60 0.5473
2015-05-08 2015-03-31 13F AMGEN COM 031162100 119,952 2,160 1.83 19,175 2.20 0.5220
2015-02-10 2014-12-31 13F AMGEN COM 031162100 117,792 33,097 39.08 18,763 57.71 0.5387
2014-11-12 2014-09-30 13F AMGEN COM 031162100 84,695 -7,664 -8.30 11,897 8.82 0.3539
2014-08-14 2014-06-30 13F AMGEN COM 031162100 92,359 -9,062 -8.94 10,933 -12.60 0.3290
2014-05-09 2014-03-31 13F AMGEN COM 031162100 101,421 22,518 28.54 12,509 38.97 0.3750
2014-02-12 2013-12-31 13F AMGEN COM 031162100 78,903 4,353 5.84 9,001 7.87 0.2879
2013-11-01 2013-09-30 13F AMGEN COM 031162100 74,550 -1,946 -2.54 8,344 10.56 0.2933
2013-08-14 2013-06-30 13F AMGEN COM 031162100 76,496 76,496 7,547 0.2918
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.