Amgen (AMGN) — Daily Price Character
Historical session stats from dividend-adjusted prices: win rate, streaks, record days, weekday patterns, and (when available) how often the stock was green on S&P 500 green days.
AMGN
Archetype
Balanced
Moderate daily swings — neither calm nor dramatic.
Win rate
48.1%
5188 green · 5079 red · 517 flat · 10784 sessions
Current streak
3 red
As of Apr 7, 2026
Max win / lose streak
10 / 10 days
Win streak return: +12.69% · Lose: 7.60%
Median / σ daily
+0.000% · 2.355%
Avg green +1.76% · avg red 1.59%
Extreme days (>3%)
14.0%
832 up · 674 down
History from Jun 20, 1983 through Apr 7, 2026 · 10784 trading days with returns.
Trailing year — daily returns (calendar)
Apr 8, 2025 – Apr 7, 2026 · Mon–Fri sessions only
Monday–Friday — average return
Average dividend-adjusted return on that weekday (green / red by sign). Green/red day rule: ±0.01% vs prior close.
Monday–Friday — win rate
Share of sessions that closed green on that weekday. Bars are green at or above 50%, red below 50%.
Top green days
Largest single-session gains (dividend-adjusted), by historical return.
| Date | Return |
|---|---|
| Apr 10, 1986 | +20.51% |
| Dec 4, 1985 | +19.78% |
| Oct 30, 1987 | +17.58% |
| Oct 28, 1987 | +16.55% |
| Jan 25, 1985 | +15.56% |
| Jul 20, 2005 | +15.11% |
| May 2, 1986 | +14.37% |
| Mar 7, 1991 | +14.11% |
| Jul 8, 2009 | +13.89% |
| Dec 21, 1998 | +13.89% |
| Apr 20, 1999 | +13.25% |
| Jul 25, 2002 | +13.07% |
| Jul 17, 2002 | +12.86% |
| Jan 22, 2001 | +12.74% |
| Apr 22, 1994 | +12.70% |
| Nov 11, 1986 | +12.65% |
| Oct 21, 1987 | +12.50% |
| Oct 29, 1987 | +12.34% |
| Oct 18, 1985 | +12.33% |
| Jul 28, 2008 | +12.17% |
Worst red days
Largest single-session losses; "Days to recovery" counts trading sessions until close recovered the prior peak (dividend-adjusted).
| Date | Return | Days to recovery |
|---|---|---|
| Feb 25, 1993 | 19.95% | 174 |
| Oct 26, 1987 | 18.75% | 2 |
| Oct 19, 1987 | 18.26% | 10 |
| Jul 1, 1987 | 16.99% | 398 |
| Oct 20, 1987 | 14.90% | 8 |
| Sep 16, 1983 | 13.88% | 527 |
| Oct 27, 2000 | 13.40% | 26 |
| Oct 16, 1987 | 12.21% | 54 |
| Jun 20, 1983 | 12.12% | 696 |
| Aug 12, 1997 | 12.11% | 146 |
| Jun 27, 1983 | 11.87% | 676 |
| Sep 8, 1986 | 11.54% | 34 |
| Aug 22, 1983 | 11.11% | 9 |
| Apr 14, 1987 | 10.46% | 2 |
| Nov 3, 1987 | 10.43% | 30 |
| Apr 30, 1986 | 10.33% | 2 |
| Jul 7, 1987 | 10.32% | 23 |
| Mar 14, 2000 | 9.91% | 1 |
| Feb 5, 1993 | 9.90% | 483 |
| Mar 27, 1989 | 9.60% | 48 |
Frequently asked questions
What is the daily win rate for Amgen (AMGN)?
- Historically, Amgen (AMGN) closed green on 48.1% of trading days (5188 green, 5079 red, 517 flat), using dividend-adjusted closes and a ±0.01% threshold for green vs red.
What is the current winning or losing streak for Amgen (AMGN)?
- As of 2026-04-07, Amgen (AMGN) is on a 3-day losing streak (consecutive green or red days by the same rules, ignoring trailing flat days).
What does Steady, Balanced, or Explosive mean for Amgen (AMGN)?
- We label Amgen (AMGN) as "balanced" based on the sample standard deviation of daily returns: Moderate daily swings — neither calm nor dramatic.
What were the best and worst single trading days for Amgen (AMGN)?
- Largest single-day gain: +20.51%. Largest single-day loss: 19.95%. Tables on this page list the top record green and red days.
What counts as an "extreme" daily move for Amgen (AMGN)?
- We treat a day as extreme if the absolute dividend-adjusted daily return exceeds 3%. About 14.0% of trading days for Amgen (AMGN) were extreme (832 up, 674 down).
Data & methodology
How are green, red, and flat days defined?
- We use dividend-adjusted (or close-to-close for non-equity) daily returns. Green: return ≥ +0.01%. Red: return ≤ −0.01%. Flat: between those bounds.
How is the current streak calculated?
- We count consecutive green or consecutive red days using the same thresholds. If the most recent session is flat, we skip trailing flat days and measure from the last non-flat close.
What does “vs S&P 500” mean?
- On sessions where the S&P 500 (^GSPC) was green, we report how often this stock was also green. Shown only for USD equities when benchmark data exists and the symbol is not the index itself.
Where does the archetype come from?
- Sample standard deviation of daily returns: low → Steady, high → Explosive, otherwise Balanced. Labels describe typical daily volatility, not quality of the investment.