Who owns AMGN? 13F holders and whale ownership
AMGN is tracked across public portfolios in Whale Analyzer. This page answers who owns AMGN, which top funds are buying AMGN, aggregate disclosed value, and recent position changes based on public data. PRIMECAP Management is the largest reported holder at $3.12B; the top five funds control 100.0% of reported ownership; institutions were net buying last quarter (3 increased, 1 reduced); the stock trades above the aggregate whale cost basis of $35.29. Top tracked holders include PRIMECAP Management, Capital Group, NPS Korea, and Samuel Isaly.
Continue to the live AMGN dashboardTop holders
| Investor | Reported value | Shares | Change |
|---|---|---|---|
| PRIMECAP Management 13F portfolio PRIMECAP Management Company holdings | $3.12B | 8.9M | Reduced |
| Capital Group 13F portfolio Capital Research Global Investors holdings | $2.45B | 7.0M | Increased |
| NPS Korea 13F portfolio National Pension Service holdings | $448.2M | 1.3M | Increased |
| Samuel Isaly 13F portfolio OrbiMed Advisors holdings | $14.0M | 39.9K | New |
Ownership concentration
Reported ownership of AMGN is highly concentrated across tracked institutions.
- Single largest holder: 51.8% of reported ownership
- Top 5 holders: 100.0%
- Top 10 holders: 100.0%
Whale activity this quarter
Across 4 tracked institutions, 3 increased, 1 reduced. Net positioning is net buying.
- PRIMECAP Management — PRIMECAP Management Company ($3.12B) (▼ 0.3% qoq shares) · avg cost $43.11
- Capital Group — Capital Research Global Investors ($2.45B) (▲ 49.6% qoq shares) · avg cost $14.71
- NPS Korea — National Pension Service ($448.2M) (▲ 2.8% qoq shares) · avg cost $39.95
Whale cost basis vs current price
The aggregate tracked cost basis is $35.29 versus a current price of $358.33, so AMGN trades above its cost basis (+915.4%). Average unrealized P&L across tracked holders: 947%.
Sector positioning — Health Care
AMGN sits within the Health Care sector alongside 221 other tracked names. Compare whale ownership across peers:
How to use this page
Values are reported public positions from tracked 13F filers and disclosures — not real-time ownership totals. Open the live AMGN dashboard for price charts and cross-investor scans, or read the SEC 13F guide.
Related stock holder pages
- LLY whale holders — ELI LILLY & CO
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- GOOGL whale holders — ALPHABET INC
- AZN whale holders — ASTRAZENECA PLC
- KLAC whale holders — KLA CORP
- INTC whale holders — INTEL CORP
- NVDA whale holders — NVIDIA CORPORATION
- FDX whale holders — FEDEX CORP
Learn more in Whale Analyzer Academy
Deepen your read on AMGN with these Whale Analyzer Academy guides:
Frequently asked questions
Who owns AMGN stock?
Whale Analyzer tracks 4 public institutional holders of AMGN with a combined reported value of $6.03B. See the holder table above for the largest tracked positions.
Which top funds are buying AMGN?
Tracked institutions were net buying last quarter — 3 increased, 1 reduced. Check the "Change" column: "New" = fresh position, "Increased" = added, "Reduced" = trimmed.
How concentrated is AMGN ownership?
The top five tracked holders report 100.0% of aggregate ownership.
Is AMGN above or below the whale cost basis?
The aggregate tracked cost basis is $35.29 versus a current price of $358.33 (+915.4%).
What does 13F ownership mean for AMGN?
Use the interactive AMGN dashboard on Whale Analyzer for real-time holder analysis, or read our 13F Alpha Signals Guide.