What if you invested in Amgen in 2020?
AMGN · Healthcare · Data through 2026-06-01
If you invested $1,000 in Amgen in 2020
The same $1,000 in the S&P 500 would be worth $2,540(+154%)
The S&P 500 returned $2,540 on the same $1,000. S&P 500 outperformed by $494.
Try a different start date
Pick any month and year to see what Amgen would be worth.
Compare Amgen to another stock
See how Amgen stacks up since 2020, head to head.
What if Amgen keeps this up?
Project forward at Amgen's 11.5% historical growth rate. See 5-30 year scenarios.
Growth of $1,000
Amgen vs. S&P 500 vs. US Dollar, 2020 to present
Year-by-Year Returns
$1,000 invested in Amgen starting January 2020
| Year | Price | Value | Annual |
|---|---|---|---|
| 2020 | $177.04 | $1,000 | - |
| 2021 | $203.31 | $1,148 | +14.8% |
| 2022 | $197.19 | $1,114 | -3% |
| 2023 | $226.04 | $1,277 | +14.6% |
| 2024 | $291.19 | $1,645 | +28.8% |
| 2025 | $272.46 | $1,539 | -6.4% |
| 2026 | $336.98 | $1,903 | +23.7% |
What this return means
$1,000 invested in Amgen (AMGN) in 2020 is worth $2,045 today. That is a +104.5% gain, a little over 2.0x your money, measured to 2026-06-01.
That is about 11.5% a year compounded, broadly in line with long-run stock market averages. By comparison the S&P 500 returned about $2,540 on the same stake, edging out Amgen by close to $494. The index compounded at about 15.2% a year, a reminder that a single stock can lag a basket of them.
Getting here meant sitting through real volatility. The best single year was 2024 at +28.8%, and the worst was 2025 at -6.4%. These figures use split-adjusted closing prices and exclude dividends, taxes, trading fees, and inflation, so a real after-tax result would differ.
This is historical math, not financial advice. Past performance does not guarantee future results.
What if you invested $100 a month instead?
Most people do not drop a lump sum in on day one. They add a fixed amount every month. Putting $100 into Amgen at the close of every month from January 2020 through June 2026 means 78 buys and $7,800 contributed over about 6.5 years.
$100/month, dollar-cost averaged
$12,147
+55.7% on $7,800 in
Same $7,800, all in at the start
$15,954
+104.5% on $7,800 in
Going all in at the start beat spreading the buys out by $3,807. That is the usual result when a stock trends up: each monthly buy pays a higher price than the last, so the average cost climbs. Averaging in also meant an average buy price of $232.52 per share across the whole stretch, so the monthly buyer never had to time a single low. Neither number counts dividends, taxes, or trading costs.
Illustrative fixed $100/month example, not a recommendation. Figures are computed from AMGN split-adjusted monthly closes through June 2026. Past performance does not guarantee future results.
Amgen at different times
See how the start year changes the outcome
More Healthcare investments
Compare returns across the sector
Related reading
Deep dives and analysis
Numbers worth sharing
Occasional data drops when something interesting surfaces. No schedule, just signal.
For informational and educational purposes only. Not financial advice. Past performance does not guarantee future results. All calculations are based on split-adjusted closing prices from Yahoo Finance and do not account for dividends, taxes, or trading fees. See our methodology and full disclaimer.