Regeneron Pharmaceuticals (REGN) — 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.
Archetype
Explosive
High daily volatility — frequent large price swings.
Win rate
47.1%
4154 green · 4300 red · 362 flat · 8816 sessions
Current streak
1 red
As of Apr 7, 2026
Max win / lose streak
11 / 12 days
Win streak return: +56.35% · Lose: 18.20%
Median / σ daily
+0.000% · 3.973%
Avg green +2.78% · avg red 2.44%
Extreme days (>3%)
28.1%
1278 up · 1201 down
History from Apr 3, 1991 through Apr 7, 2026 · 8816 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 |
|---|---|
| Feb 23, 2000 | +75.41% |
| May 13, 1997 | +50.83% |
| May 19, 2003 | +41.51% |
| Apr 18, 2000 | +40.64% |
| Jan 10, 1995 | +36.05% |
| Jan 9, 1995 | +33.91% |
| Sep 8, 2003 | +32.08% |
| Feb 2, 1999 | +30.63% |
| Mar 22, 2000 | +28.87% |
| Apr 27, 2011 | +28.60% |
| Feb 11, 1998 | +26.71% |
| Sep 19, 1991 | +26.61% |
| Feb 29, 2000 | +25.18% |
| Oct 31, 2000 | +25.09% |
| Feb 25, 2000 | +24.85% |
| Oct 24, 2005 | +24.50% |
| Mar 2, 1993 | +24.49% |
| Jul 26, 1995 | +23.15% |
| Nov 29, 2007 | +23.14% |
| Jan 5, 1993 | +22.90% |
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 |
|---|---|---|
| Mar 31, 2003 | 56.54% | 50 |
| Jan 10, 1997 | 43.11% | 784 |
| Mar 15, 1994 | 33.36% | 359 |
| Sep 2, 1999 | 22.21% | 68 |
| Apr 4, 2000 | 21.94% | 17 |
| Apr 29, 2011 | 21.00% | 88 |
| Oct 7, 2003 | 20.73% | 765 |
| Nov 15, 1991 | 20.29% | 31 |
| Mar 14, 2000 | 19.76% | 7 |
| Jun 5, 2008 | 19.53% | 32 |
| May 30, 2025 | 19.01% | 104 |
| Feb 22, 1993 | 16.95% | 2 |
| Nov 20, 2000 | 16.79% | 4 |
| Aug 25, 1992 | 16.68% | 55 |
| Jun 23, 1994 | 16.51% | 138 |
| Sep 17, 2001 | 15.34% | 45 |
| Apr 10, 2000 | 15.13% | 13 |
| Oct 13, 1998 | 14.97% | 4 |
| Mar 21, 1994 | 13.99% | 28 |
| Oct 12, 2001 | 13.98% | 26 |
Frequently asked questions
What is the daily win rate for Regeneron Pharmaceuticals (REGN)?
- Historically, Regeneron Pharmaceuticals (REGN) closed green on 47.1% of trading days (4154 green, 4300 red, 362 flat), using dividend-adjusted closes and a ±0.01% threshold for green vs red.
What is the current winning or losing streak for Regeneron Pharmaceuticals (REGN)?
- As of 2026-04-07, Regeneron Pharmaceuticals (REGN) is on a 1-day losing streak (consecutive green or red days by the same rules, ignoring trailing flat days).
What does Steady, Balanced, or Explosive mean for Regeneron Pharmaceuticals (REGN)?
- We label Regeneron Pharmaceuticals (REGN) as "explosive" based on the sample standard deviation of daily returns: High daily volatility — frequent large price swings.
What were the best and worst single trading days for Regeneron Pharmaceuticals (REGN)?
- Largest single-day gain: +75.41%. Largest single-day loss: 56.54%. Tables on this page list the top record green and red days.
What counts as an "extreme" daily move for Regeneron Pharmaceuticals (REGN)?
- We treat a day as extreme if the absolute dividend-adjusted daily return exceeds 3%. About 28.1% of trading days for Regeneron Pharmaceuticals (REGN) were extreme (1278 up, 1201 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.