Amgen Inc.
US ˙ NasdaqGS ˙ US0311621009

SecurityAMGN / Amgen Inc.
InstitutionDavis R M Inc
Latest Disclosed Ownership6,685 shares
Latest Disclosed Value $ 2,351,973
Davis R M Inc reports 9.84% decrease in ownership of AMGN / Amgen Inc.

On May 13, 2026 - Davis R M Inc filed a 13F-HR form disclosing ownership of 6,685 shares of Amgen Inc. (US:AMGN) valued at $2,352,117 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 7,415 shares of Amgen Inc.. This represents a change in shares of -9.84% during the quarter. The current value of the position is $2,261,001 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)
2026-05-13 2026-03-31 13F AMGEN COM 031162100 6,685 -730 -9.84 2,352 -3.13 0.0417
2026-02-12 2025-12-31 13F Amgen COM 031162100 7,415 4,339 141.06 2,427 179.61 0.0418
2025-11-12 2025-09-30 13F Amgen COM 031162100 3,076 -106 -3.33 868 -2.25 0.0152
2025-08-07 2025-06-30 13F Amgen COM 031162100 3,182 72 2.32 889 -8.26 0.0165
2025-05-08 2025-03-31 13F Amgen COM 031162100 3,110 -214 -6.44 969 11.78 0.0194
2025-02-07 2024-12-31 13F Amgen COM 031162100 3,324 -149 -4.29 866 -22.61 0.0169
2024-11-13 2024-09-30 13F Amgen COM 031162100 3,473 -448 -11.43 1,119 -8.65 0.0216
2024-08-09 2024-06-30 13F Amgen COM 031162100 3,921 -145 -3.57 1,225 5.97 0.0249
2024-05-10 2024-03-31 13F Amgen COM 031162100 4,066 -44 -1.07 1,156 -2.28 0.0242
2024-02-09 2023-12-31 13F Amgen COM 031162100 4,110 -415 -9.17 1,184 118,200.00 0.0273
2023-11-14 2023-09-30 13F Amgen COM 031162100 4,525 -180 -3.83 1 0.00 0.0305
2023-08-10 2023-06-30 13F Amgen COM 031162100 4,705 -645 -12.06 1 0.00 0.0251
2023-05-01 2023-03-31 13F Amgen COM 031162100 5,350 -243 -4.34 1 0.00 0.0329
2023-02-14 2022-12-31 13F Amgen COM 031162100 5,593 312 5.91 1 -99.92 0.0396
2022-11-08 2022-09-30 13F Amgen COM 031162100 5,281 -100 -1.86 1,190 -9.09 0.0345
2022-08-08 2022-06-30 13F Amgen COM 031162100 5,381 -331 -5.79 1,309 -5.21 0.0365
2022-05-05 2022-03-31 13F Amgen COM 031162100 5,712 -469 -7.59 1,381 -0.72 0.0329
2022-02-08 2021-12-31 13F Amgen COM 031162100 6,181 223 3.74 1,391 9.79 0.0310
2021-11-08 2021-09-30 13F Amgen COM 031162100 5,958 -527 -8.13 1,267 -19.86 0.0314
2021-08-12 2021-06-30 13F Amgen COM 031162100 6,485 -250 -3.71 1,581 -5.67 0.0397
2021-05-10 2021-03-31 13F Amgen COM 031162100 6,735 -181 -2.62 1,676 5.41 0.0461
2021-01-27 2020-12-31 13F Amgen COM 031162100 6,916 119 1.75 1,590 -7.99 0.0456
2020-12-01 2020-09-30 13F Amgen COM 031162100 6,797 -482 -6.62 1,728 0.64 0.0565
2020-07-20 2020-06-30 13F Amgen COM 031162100 7,279 -296 -3.91 1,717 11.78 0.0612
2020-04-24 2020-03-31 13F Amgen COM 031162100 7,575 253 3.46 1,536 -12.97 0.0638
2020-01-23 2019-12-31 13F Amgen COM 031162100 7,322 386 5.57 1,765 31.52 0.0579
2019-10-24 2019-09-30 13F Amgen COM 031162100 6,936 638 10.13 1,342 15.59 0.0473
2019-07-31 2019-06-30 13F Amgen COM 031162100 6,298 205 3.36 1,161 0.26 0.0413
2019-04-29 2019-03-31 13F Amgen COM 031162100 6,093 -554 -8.33 1,158 -10.51 0.0431
2019-01-18 2018-12-31 13F Amgen COM 031162100 6,647 406 6.51 1,294 0.00 0.0530
2018-10-17 2018-09-30 13F Amgen COM 031162100 6,241 5 0.08 1,294 12.42 0.0470
2018-07-19 2018-06-30 13F AMGEN COM 031162100 6,236 48 0.78 1,151 9.10 0.0448
2018-04-19 2018-03-31 13F AMGEN COM 031162100 6,188 -32 -0.51 1,055 -2.50 0.0420
2018-01-16 2017-12-31 13F AMGEN COM 031162100 6,220 56 0.91 1,082 -5.83 0.0424
2017-10-24 2017-09-30 13F AMGEN COM 031162100 6,164 677 12.34 1,149 21.59 0.0475
2017-07-31 2017-06-30 13F AMGEN COM 031162100 5,487 -49 -0.89 945 4.07 0.0399
2017-05-03 2017-03-31 13F AMGEN COM 031162100 5,536 -1,143 -17.11 908 -7.06 0.0410
2017-01-18 2016-12-31 13F AMGEN COM 031162100 6,679 -490 -6.83 977 -18.31 0.0467
2016-10-19 2016-09-30 13F AMGEN COM 031162100 7,169 -836 -10.44 1,196 -1.81 0.0583
2016-07-14 2016-06-30 13F AMGEN COM 031162100 8,005 668 9.10 1,218 10.73 0.0599
2016-04-18 2016-03-31 13F AMGEN COM 031162100 7,337 16 0.22 1,100 -7.41 0.0560
2016-01-14 2015-12-31 13F AMGEN COM 031162100 7,321 -2,800 -27.67 1,188 -15.14 0.0608
2015-10-16 2015-09-30 13F AMGEN COM 031162100 10,121 6,767 201.76 1,400 171.84 0.0748
2015-07-16 2015-06-30 13F AMGEN COM 031162100 3,354 434 14.86 515 10.28 0.0266
2015-04-17 2015-03-31 13F AMGEN COM 031162100 2,920 0 0.00 467 0.43 0.0246
2015-01-23 2014-12-31 13F AMGEN COM 031162100 2,920 -15 -0.51 465 12.86 0.0256
2014-10-20 2014-09-30 13F/A-2 AMGEN COM 031162100 2,935 -404 -12.10 412 4.30 0.0237
2014-10-20 2014-09-30 13F/A-1 AMGEN COM 031162100 2,935 0 412 0.0237
2014-10-20 2014-09-30 13F AMGEN COM 031162100 3,339 395
2014-07-15 2014-06-30 13F AMGEN COM 031162100 3,339 289 9.48 395 5.05 0.0227
2014-04-15 2014-03-31 13F AMGEN COM 031162100 3,050 -124 -3.91 376 3.87 0.0228
2014-01-27 2013-12-31 13F AMGEN COM 031162100 3,174 -1 -0.03 362 1.97 0.0221
2013-10-23 2013-09-30 13F AMGEN COM 031162100 3,175 0 0.00 355 13.42 0.0239
2013-08-12 2013-06-30 13F AMGEN COM 031162100 3,175 3,175 313 0.0223
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.