Amgen Inc.
MX ˙ BMV ˙ NL0000888691
SecurityMX:AMGN / Amgen Inc.
InstitutionAssetmark, Inc
Latest Disclosed Ownership243,853 shares
Latest Disclosed Value $ 85,799,524
Assetmark, Inc reports 6.89% increase in ownership of AMGN / Amgen Inc.

On May 6, 2026 - Assetmark, Inc filed a 13F-HR form disclosing ownership of 243,853 shares of Amgen Inc. (MX:AMGN) valued at $85,799,524 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 228,134 shares of Amgen Inc.. This represents a change in shares of 6.89% 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)
2026-05-06 2026-03-31 13F AMGEN COM 031162100 243,853 15,719 6.89 85,800 14.90 0.1750
2026-01-23 2025-12-31 13F AMGEN COM 031162100 228,134 14,341 6.71 74,670 23.77 0.1523
2025-11-06 2025-09-30 13F AMGEN COM 031162100 213,793 10,886 5.37 60,332 6.49 0.1293
2025-08-04 2025-06-30 13F AMGEN COM 031162100 202,907 26,939 15.31 56,654 3.34 0.1338
2025-05-06 2025-03-31 13F AMGEN COM 031162100 175,968 -118,002 -40.14 54,823 -28.45 0.1506
2025-02-06 2024-12-31 13F AMGEN COM 031162100 293,970 15,399 5.53 76,620 -14.64 0.2081
2024-11-01 2024-09-30 13F AMGEN COM 031162100 278,571 3,983 1.45 89,758 4.62 0.2571
2024-08-13 2024-06-30 13F AMGEN COM 031162100 274,588 -2,695 -0.97 85,795 8.82 0.2653
2024-05-07 2024-03-31 13F AMGEN COM 031162100 277,283 3,885 1.42 78,837 0.12 0.2563
2024-02-09 2023-12-31 13F AMGEN COM 031162100 273,398 -3,608 -1.30 78,744 5.77 0.2845
2023-10-27 2023-09-30 13F AMGEN COM 031162100 277,006 6,888 2.55 74,448 24.14 0.2977
2023-08-11 2023-06-30 13F AMGEN INC COM COM 031162100 270,118 -7,486 -2.70 59,972 -10.64 0.2353
2023-05-05 2023-03-31 13F AMGEN INC COM COM 031162100 277,604 8,131 3.02 67,111 -5.18 0.2774
2023-02-10 2022-12-31 13F AMGEN COM 031162100 269,473 6,624 2.52 70,774 19.46 0.3068
2022-11-01 2022-09-30 13F AMGEN COM 031162100 262,849 24,348 10.21 59,246 2.10 0.2770
2022-08-03 2022-06-30 13F AMGEN INC COM COM 031162100 238,501 -3,602 -1.49 58,027 -0.88 0.2601
2022-05-13 2022-03-31 13F AMGEN INC COM COM 031162100 242,103 4,892 2.06 58,545 9.71 0.2450
2022-02-14 2021-12-31 13F AMGEN INC COM COM 031162100 237,211 -26,225 -9.95 53,365 -4.74 0.2193
2021-11-12 2021-09-30 13F AMGEN INC COM COM 031162100 263,436 8,018 3.14 56,020 -10.02 0.2510
2021-08-16 2021-06-30 13F AMGEN INC COM COM 031162100 255,418 10,763 4.40 62,258 2.28 0.2887
2021-05-14 2021-03-31 13F AMGEN COM 031162100 244,655 -145,105 -37.23 60,873 -32.07 0.3140
2021-02-10 2020-12-31 13F AMGEN INC COM COM 031162100 389,760 56,289 16.88 89,614 5.73 0.4993
2020-11-13 2020-09-30 13F AMGEN INC COM COM 031162100 333,471 55,896 20.14 84,755 33.62 0.5469
2020-08-11 2020-06-30 13F AMGEN INC COM COM 031162100 277,575 25,945 10.31 63,428 24.34 0.4538
2020-05-12 2020-03-31 13F AMGEN INC COM COM 031162100 251,630 242,507 2,658.19 51,013 2,219.83 0.4319
2020-02-11 2019-12-31 13F AMGEN INC COM COM 031162100 9,123 -1,025 -10.10 2,199 11.97 0.0167
2019-11-13 2019-09-30 13F AMGEN INC COM COM 031162100 10,148 281 2.85 1,964 8.03 0.0164
2019-08-14 2019-06-30 13F AMGEN INC COM COM 031162100 9,867 1,625 19.72 1,818 16.09 0.0148
2019-05-14 2019-03-31 13F AMGEN INC COM COM 031162100 8,242 -504 -5.76 1,566 -8.04 0.0141
2019-02-13 2018-12-31 13F AMGEN INC COM COM 031162100 8,746 -84,407 -90.61 1,703 -91.18 0.0164
2018-11-13 2018-09-30 13F AMGEN INC COM COM 031162100 93,153 -78 -0.08 19,310 12.20 0.1756
2018-08-01 2018-06-30 13F AMGEN INC COM COM 031162100 93,231 2,840 3.14 17,210 11.68 0.1691
2018-05-16 2018-03-31 13F AMGEN INC COM COM 031162100 90,391 -3,703 -3.94 15,410 -5.82 0.1595
2018-02-13 2017-12-31 13F AMGEN INC COM COM 031162100 94,094 -20,105 -17.61 16,363 -23.15 0.1686
2017-11-08 2017-09-30 13F AMGEN INC COM COM 031162100 114,199 -440 -0.38 21,293 7.85 0.2422
2017-08-14 2017-06-30 13F AMGEN INC COM COM 031162100 114,639 11,751 11.42 19,744 16.96 0.2484
2017-09-15 2017-03-31 13F/A-1 AMGEN INC COM COM 031162100 102,888 27,808 37.04 16,881 53.79 0.2218
2017-05-08 2017-03-31 13F AMGEN INC COM COM 031162100 102,888 27,808 16,881
2017-09-15 2016-12-31 13F/A-1 AMGEN INC COM COM 031162100 75,080 14,178 23.28 10,977 8.04 0.1613
2017-02-14 2016-12-31 13F AMGEN INC COM COM 031162100 75,080 14,178 10,977
2017-09-14 2016-09-30 13F/A-1 AMGEN INC COM COM 031162100 60,902 9,666 18.87 10,160 30.32 0.1545
2016-11-04 2016-09-30 13F AMGEN INC COM COM 031162100 60,902 9,666 10,160
2017-09-14 2016-06-30 13F/A-1 AMGEN INC COM COM 031162100 51,236 6,409 14.30 7,796 15.99 0.1311
2016-08-08 2016-06-30 13F AMGEN INC COM COM 031162100 51,236 6,409 7,796
2017-09-14 2016-03-31 13F/A-1 AMGEN INC COM COM 031162100 44,827 5,860 15.04 6,721 6.24 0.1173
2016-05-13 2016-03-31 13F AMGEN INC COM COM 031162100 44,827 5,860 6,721
2017-09-14 2015-12-31 13F/A-1 AMGEN INC COM COM 031162100 38,967 7,962 25.68 6,326 47.49 0.1172
2016-02-12 2015-12-31 13F AMGEN INC COM COM 031162100 38,967 7,962 6,326
2016-01-05 2015-09-30 13F/A-1 AMGEN INC COM COM 031162100 31,005 13,923 81.51 4,289 63.52 0.0895
2015-11-10 2015-09-30 13F AMGEN INC COM COM 031162100 31,005 4,289
2015-08-13 2015-06-30 13F AMGEN INC COM COM 031162100 17,082 1,485 9.52 2,623 5.21 0.0546
2015-05-12 2015-03-31 13F AMGEN INC COM COM 031162100 15,597 15,597 0.00 2,493 0.0531
2015-02-03 2014-12-31 13F AMGEN INC COM COM 031162100 0 -14,364 -100.00 0 -100.00
2014-11-10 2014-09-30 13F AMGEN INC COM COM 031162100 14,364 32 0.22 2,018 18.99 0.0466
2014-08-12 2014-06-30 13F AMGEN INC COM COM 031162100 14,332 3,123 27.86 1,696 22.63 0.0361
2014-05-06 2014-03-31 13F AMGEN INC COM COM 031162100 11,209 -284 -2.47 1,383 5.49 0.0337
2014-02-11 2013-12-31 13F AMGEN INC COM COM 031162100 11,493 -334 -2.82 1,311 -0.98 0.0310
2014-02-11 2013-09-30 13F/A-1 AMGEN INC COM COM 031162100 11,827 11,827 1,324 0.0334
2013-11-14 2013-09-30 13F AMGEN INC COM COM 031162100 11,827 1,324 0.0334
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.