Amgen Inc.
MX ˙ BMV ˙ NL0000888691
SecurityMX:AMGN / Amgen Inc.
InstitutionTcw Group Inc
Latest Disclosed Ownership25,147 shares
Latest Disclosed Value $ 8,847,972
Tcw Group Inc reports 73.15% decrease in ownership of AMGN / Amgen Inc.

On May 14, 2026 - Tcw Group Inc filed a 13F-HR form disclosing ownership of 25,147 shares of Amgen Inc. (MX:AMGN) valued at $8,847,972 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 93,659 shares of Amgen Inc.. This represents a change in shares of -73.15% 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)
2026-05-14 2026-03-31 13F AMGEN COM 031162100 25,147 -68,512 -73.15 8,848 -71.14 0.0666
2026-02-17 2025-12-31 13F AMGEN COM 031162100 93,659 -56,396 -37.58 30,656 -27.61 0.2196
2025-11-14 2025-09-30 13F AMGEN COM 031162100 150,055 -42,771 -22.18 42,346 -21.35 0.3546
2025-08-14 2025-06-30 13F AMGEN COM 031162100 192,826 -28,918 -13.04 53,839 -22.07 0.4218
2025-05-07 2025-03-31 13F AMGEN COM 031162100 221,744 -1,018 -0.46 69,084 18.99 0.6182
2025-02-04 2024-12-31 13F AMGEN COM 031162100 222,762 -53,965 -19.50 58,061 -34.88 0.4875
2024-11-19 2024-09-30 13F/A-1 AMGEN COM 031162100 276,727 16,984 6.54 89,164 9.87 0.7795
2024-11-08 2024-09-30 13F AMGEN COM 031162100 276,727 16,984 89,164 0.4009
2024-07-19 2024-06-30 13F AMGEN COM 031162100 259,743 60,542 30.39 81,157 43.29 0.7254
2024-05-10 2024-03-31 13F AMGEN COM 031162100 199,201 24,310 13.90 56,637 12.43 0.5734
2024-02-09 2023-12-31 13F AMGEN COM 031162100 174,891 35,040 25.06 50,376 34.03 0.5614
2023-11-15 2023-09-30 13F AMGEN COM 031162100 139,851 -22,774 -14.00 37,586 4.10 0.4722
2023-08-14 2023-06-30 13F AMGEN COM 031162100 162,625 12,294 8.18 36,106 -0.65 0.4004
2023-05-15 2023-03-31 13F AMGEN COM 031162100 150,331 8,321 5.86 36,343 -2.56 0.4649
2023-02-14 2022-12-31 13F AMGEN COM 031162100 142,010 11,585 8.88 37,298 26.87 0.5340
2022-10-27 2022-09-30 13F AMGEN COM 031162100 130,425 16,049 14.03 29,397 5.64 0.4300
2022-07-19 2022-06-30 13F AMGEN COM 031162100 114,376 54,015 89.49 27,827 90.65 0.3643
2022-04-19 2022-03-31 13F AMGEN COM 031162100 60,361 60,361 14,596 0.1393
2017-05-11 2017-03-31 13F AMGEN COM 031162100 0 -72,320 -100.00 0 -100.00
2017-02-10 2016-12-31 13F AMGEN COM 031162100 72,320 -25,342 -25.95 10,574 -35.09 0.0796
2016-11-14 2016-09-30 13F AMGEN COM 031162100 97,662 -37,229 -27.60 16,291 -20.62 0.1237
2016-08-12 2016-06-30 13F/A-1 AMGEN COM 031162100 134,891 15,250 12.75 20,524 14.42 0.1551
2016-08-11 2016-06-30 13F AMGEN COM 031162100 134,891 20,524
2016-05-16 2016-03-31 13F AMGEN COM 031162100 119,641 21,220 21.56 17,938 12.27 0.1316
2016-02-16 2015-12-31 13F AMGEN COM 031162100 98,421 31,943 48.05 15,977 73.74 0.1147
2015-11-13 2015-09-30 13F AMGEN COM 031162100 66,478 1,963 3.04 9,196 -7.15 0.0660
2015-08-12 2015-06-30 13F AMGEN COM 031162100 64,515 -163,026 -71.65 9,904 -72.77 0.0638
2015-05-13 2015-03-31 13F AMGEN COM 031162100 227,541 2,628 1.17 36,372 1.52 0.1746
2015-02-13 2014-12-31 13F AMGEN COM 031162100 224,913 -162,470 -41.94 35,826 -34.16 0.1499
2014-11-14 2014-09-30 13F AMGEN COM 031162100 387,383 -14,907 -3.71 54,412 14.27 0.2188
2014-08-14 2014-06-30 13F AMGEN COM 031162100 402,290 26,850 7.15 47,618 2.83 0.1961
2014-05-13 2014-03-31 13F AMGEN COM 031162100 375,440 2,192 0.59 46,307 8.70 0.1923
2014-02-18 2013-12-31 13F/A-1 AMGEN COM 031162100 373,248 950 0.26 42,599 2.22 0.1795
2014-02-14 2013-12-31 13F AMGEN COM 031162100 42,599 373,248
2013-11-14 2013-09-30 13F AMGEN COM 031162100 372,298 4,150 1.13 41,675 14.74 0.1925
2013-08-14 2013-06-30 13F/A-1 AMGEN COM 031162100 368,148 368,148 36,321 0.1791
2013-08-14 2013-06-30 13F AMGEN COM 031162100 368,148 36,321
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.