Celldex Therapeutics Stock Price History
NASDAQ: CLDXHealth CareBiotechnology: In Vitro & In Vivo Diagnostic SubstancesUSD
29.89+0.59 (+2.01%)
At close: Oct 9, 4:00 PM ET · Delayed 15 min
CLDX price history at a glance
The price history for Celldex Therapeutics (CLDX) on this page begins on May 12, 1986, when the stock closed at $742.50; it most recently closed at $29.89 on October 5, 2026. The highest price in this record is $3,375.00, reached on March 6, 2000; the latest close is 99.1% below that peak. Across the 39 complete calendar years in the table, CLDX finished higher in 15 and lower in 24. Its best year was 2020 (+639.2%) and its worst was 2018 (-91.5%).
Over roughly 40 years the share price changed -96.0%, a -7.6% compound annual price return (excluding dividends). In the last 12 months alone, CLDX has gained 8.5%. Prices are split-adjusted closing prices; daily open, high, low, close and volume for the past year are listed below.
Summary generated from market data by MetaCap's automated system. Methodology
Key price levels
- High since 1986
- $3,375.00
- Date of high
- Mar 6, 2000
- Low since 1986
- $1.50
- Date of low
- Mar 16, 2020
- 52-week high
- $45.14
- 52-week low
- $22.10
- Last close
- $29.89
CLDX returns
1 week
-5.56%
1 month
-22.92%
3 months
-23.57%
6 months
-7.29%
Year to date
+10.05%
1 year
+8.53%
3 years
+14.35%
5 years
-35.28%
CLDX price return, excluding dividends.
CLDX annual returns
| Year | Year-end close | Return |
|---|---|---|
| 2026 | 29.89 | +10.66% |
| 2025 | 27.01 | +0.75% |
| 2024 | 26.81 | -32.40% |
| 2023 | 39.66 | -11.02% |
| 2022 | 44.57 | +15.35% |
| 2021 | 38.64 | +120.55% |
| 2020 | 17.52 | +639.24% |
| 2019 | 2.37 | -34.17% |
| 2018 | 3.60 | -91.55% |
| 2017 | 42.60 | -19.77% |
| 2016 | 53.10 | -77.42% |
| 2015 | 235.20 | -14.83% |
| 2014 | 276.15 | -24.18% |
| 2013 | 364.20 | +242.94% |
| 2012 | 106.20 | +172.31% |
| 2011 | 39.00 | -36.89% |
| 2010 | 61.80 | -11.78% |
| 2009 | 70.05 | -41.55% |
| 2008 | 119.85 | +7.39% |
| 2007 | 111.60 | -53.73% |
| 2006 | 241.20 | -28.72% |
| 2005 | 338.40 | -6.47% |
| 2004 | 361.80 | -27.17% |
| 2003 | 496.80 | +128.10% |
| 2002 | 217.80 | -68.97% |
| 2001 | 702.00 | -43.27% |
| 2000 | 1,237.50 | +178.48% |
| 1999 | 444.38 | +41.07% |
| 1998 | 315.00 | -22.22% |
| 1997 | 405.00 | +35.85% |
| 1996 | 298.13 | -47.00% |
| 1995 | 562.50 | +25.00% |
| 1994 | 450.00 | -67.74% |
| 1993 | 1,395.00 | +5.08% |
| 1992 | 1,327.50 | -37.23% |
| 1991 | 2,115.00 | +291.67% |
| 1990 | 540.00 | -40.00% |
| 1989 | 900.00 | +150.00% |
| 1988 | 360.00 | -33.33% |
| 1987 | 540.00 | -11.11% |
| 1986* | 607.50 | -18.18% |
* Partial year: the record begins after the start of 1986; return measured from the first available close.
2026 return is year to date.
CLDX daily prices (past year)
| Date | Open | High | Low | Close | Change |
|---|---|---|---|---|---|
| 29.04 | 30.25 | 28.88 | 29.89 | +2.01% | |
| 30.07 | 30.07 | 28.64 | 29.30 | -3.71% | |
| 30.62 | 31.35 | 30.11 | 30.43 | -1.87% | |
| 32.68 | 32.68 | 30.85 | 31.01 | -4.85% | |
| 31.83 | 32.88 | 31.50 | 32.59 | +2.97% | |
| 32.26 | 32.54 | 30.98 | 31.65 | -1.65% | |
| 32.26 | 32.55 | 31.70 | 32.18 | -0.71% | |
| 31.71 | 32.76 | 31.45 | 32.41 | +2.43% | |
| 31.49 | 31.79 | 31.00 | 31.64 | +0.48% | |
| 31.06 | 32.15 | 30.38 | 31.49 | +1.25% | |
| 31.48 | 31.71 | 30.65 | 31.10 | -1.21% | |
| 31.48 | 31.66 | 30.59 | 31.48 | +1.16% | |
| 33.54 | 33.59 | 30.41 | 31.12 | -7.13% | |
| 36.60 | 38.39 | 30.39 | 33.51 | -11.56% | |
| 41.62 | 41.62 | 37.48 | 37.89 | -0.92% | |
| 38.87 | 38.87 | 37.54 | 38.24 | -1.90% | |
| 39.47 | 40.66 | 38.92 | 38.98 | +0.70% | |
| 38.59 | 39.21 | 38.25 | 38.71 | +0.52% | |
| 39.00 | 39.19 | 37.74 | 38.51 | -1.71% | |
| 37.40 | 39.42 | 37.27 | 39.18 | +6.18% | |
| 38.39 | 38.59 | 36.84 | 36.90 | -3.15% | |
| 38.78 | 38.86 | 37.75 | 38.10 | -1.75% | |
| 38.95 | 40.04 | 38.67 | 38.78 | -0.87% | |
| 38.78 | 39.87 | 38.50 | 39.12 | -1.41% | |
| 38.96 | 39.81 | 38.90 | 39.68 | +0.79% | |
| 39.50 | 39.89 | 38.95 | 39.37 | -0.28% | |
| 39.43 | 40.55 | 39.01 | 39.48 | +0.61% | |
| 39.13 | 39.90 | 38.94 | 39.24 | -0.98% | |
| 38.86 | 39.84 | 38.74 | 39.63 | +1.30% | |
| 40.33 | 40.57 | 39.04 | 39.12 | -3.31% | |
| 40.44 | 41.00 | 40.02 | 40.46 | -0.27% | |
| 41.18 | 42.12 | 40.06 | 40.57 | -1.58% | |
| 41.02 | 41.92 | 40.63 | 41.22 | +1.60% | |
| 40.16 | 40.98 | 39.53 | 40.57 | +0.47% | |
| 40.38 | 41.24 | 40.12 | 40.38 | +1.10% | |
| 41.40 | 42.00 | 39.45 | 39.94 | -4.22% | |
| 42.10 | 43.20 | 41.33 | 41.70 | -0.22% | |
| 41.29 | 42.36 | 41.03 | 41.79 | -0.31% | |
| 41.54 | 42.81 | 41.07 | 41.92 | -0.07% | |
| 42.23 | 42.35 | 40.88 | 41.95 | -1.55% | |
| 45.13 | 45.13 | 42.56 | 42.61 | -5.04% | |
| 44.40 | 45.14 | 43.80 | 44.87 | +1.22% | |
| 42.81 | 44.60 | 42.46 | 44.33 | +3.16% | |
| 41.71 | 43.21 | 41.41 | 42.97 | +3.02% | |
| 41.87 | 42.92 | 41.29 | 41.71 | +0.36% | |
| 41.12 | 41.74 | 40.84 | 41.56 | +1.22% | |
| 39.36 | 41.15 | 38.86 | 41.06 | +5.15% | |
| 37.69 | 39.34 | 37.54 | 39.05 | +3.61% | |
| 38.09 | 38.59 | 37.05 | 37.69 | -0.97% | |
| 38.50 | 38.65 | 37.15 | 38.06 | -1.12% | |
| 37.26 | 38.59 | 37.23 | 38.49 | +2.61% | |
| 35.58 | 37.76 | 35.58 | 37.51 | +5.42% | |
| 35.93 | 36.05 | 35.00 | 35.58 | -0.20% | |
| 35.68 | 36.40 | 35.12 | 35.65 | +1.05% | |
| 35.76 | 35.76 | 34.74 | 35.28 | -0.40% | |
| 34.25 | 35.75 | 33.97 | 35.42 | +1.87% | |
| 33.83 | 36.09 | 33.37 | 34.77 | -2.50% | |
| 35.58 | 36.00 | 34.57 | 35.66 | +0.68% | |
| 36.05 | 36.65 | 35.29 | 35.42 | +0.20% | |
| 34.71 | 36.04 | 34.37 | 35.35 | -0.14% | |
| 37.49 | 37.94 | 34.97 | 35.40 | -7.60% | |
| 38.13 | 38.69 | 37.51 | 38.31 | +0.37% | |
| 38.70 | 39.22 | 38.08 | 38.17 | -0.93% | |
| 38.61 | 38.66 | 37.53 | 38.53 | -1.48% | |
| 38.90 | 39.19 | 37.81 | 39.11 | +0.33% | |
| 39.30 | 39.59 | 38.56 | 38.98 | +0.05% | |
| 39.48 | 40.19 | 38.68 | 38.96 | -2.43% | |
| 38.13 | 40.30 | 37.30 | 39.93 | +5.22% | |
| 38.20 | 38.50 | 37.26 | 37.95 | -1.09% | |
| 36.95 | 38.43 | 36.18 | 38.37 | +4.32% | |
| 37.15 | 37.64 | 36.57 | 36.78 | -1.16% | |
| 37.42 | 39.16 | 36.96 | 37.21 | -0.61% | |
| 35.32 | 37.54 | 34.66 | 37.44 | +6.18% | |
| 34.06 | 35.47 | 33.77 | 35.26 | +3.43% | |
| 33.71 | 35.39 | 33.70 | 34.09 | +0.92% | |
| 32.95 | 34.15 | 32.63 | 33.78 | +2.43% | |
| 32.87 | 33.72 | 32.57 | 32.98 | -1.29% | |
| 32.90 | 33.46 | 32.26 | 33.41 | +3.02% | |
| 33.69 | 34.14 | 32.35 | 32.43 | -1.52% | |
| 32.58 | 33.56 | 32.29 | 32.93 | +1.89% | |
| 32.20 | 32.45 | 31.41 | 32.32 | +0.62% | |
| 31.29 | 32.21 | 31.05 | 32.12 | +2.72% | |
| 29.94 | 31.41 | 29.94 | 31.27 | +4.37% | |
| 29.41 | 30.21 | 29.33 | 29.96 | +2.08% | |
| 29.92 | 30.35 | 29.29 | 29.35 | -0.84% | |
| 29.03 | 29.73 | 28.54 | 29.60 | +3.64% | |
| 28.87 | 29.00 | 28.38 | 28.56 | -0.21% | |
| 29.83 | 30.05 | 28.46 | 28.62 | -4.38% | |
| 30.10 | 30.62 | 29.83 | 29.93 | +0.54% | |
| 28.90 | 29.86 | 28.70 | 29.77 | +3.01% | |
| 29.73 | 29.88 | 28.82 | 28.90 | -4.11% | |
| 31.02 | 31.12 | 29.61 | 30.14 | -4.10% | |
| 31.79 | 32.00 | 31.09 | 31.43 | -0.85% | |
| 31.30 | 32.30 | 30.91 | 31.70 | +0.16% | |
| 31.01 | 32.24 | 30.89 | 31.65 | +2.59% | |
| 30.84 | 31.13 | 30.40 | 30.85 | +0.39% | |
| 30.66 | 31.22 | 30.65 | 30.73 | +0.49% | |
| 30.75 | 31.08 | 30.12 | 30.58 | -1.04% | |
| 30.40 | 31.18 | 30.35 | 30.90 | +2.49% | |
| 30.08 | 30.37 | 29.27 | 30.15 | -0.23% | |
| 31.45 | 31.98 | 29.70 | 30.22 | -3.57% | |
| 32.07 | 32.38 | 31.13 | 31.34 | -3.42% | |
| 32.70 | 32.83 | 31.60 | 32.45 | -0.18% | |
| 32.25 | 33.08 | 31.91 | 32.51 | +1.59% | |
| 32.45 | 32.49 | 31.73 | 32.00 | -0.87% | |
| 33.98 | 34.78 | 31.76 | 32.28 | -4.97% | |
| 34.94 | 34.94 | 32.62 | 33.97 | +1.95% | |
| 34.25 | 34.25 | 32.58 | 33.32 | -3.11% | |
| 33.91 | 34.54 | 33.33 | 34.39 | +1.57% | |
| 33.13 | 34.20 | 32.43 | 33.86 | +3.33% | |
| 32.17 | 33.01 | 32.17 | 32.77 | +1.42% | |
| 32.90 | 33.86 | 32.17 | 32.31 | -1.73% | |
| 32.70 | 33.32 | 32.29 | 32.88 | +2.30% | |
| 32.73 | 33.04 | 31.65 | 32.14 | -3.28% | |
| 33.96 | 34.61 | 33.19 | 33.23 | -1.28% | |
| 33.15 | 34.65 | 33.15 | 33.66 | +1.11% | |
| 33.80 | 33.80 | 32.88 | 33.29 | -0.77% | |
| 34.51 | 34.96 | 33.19 | 33.55 | -1.93% | |
| 34.57 | 34.74 | 33.84 | 34.21 | -0.12% | |
| 34.39 | 34.39 | 33.64 | 34.25 | -0.38% | |
| 35.79 | 35.79 | 34.34 | 34.38 | -0.49% | |
| 34.55 | 35.29 | 34.32 | 34.55 | +2.04% | |
| 33.82 | 33.97 | 33.29 | 33.86 | -0.03% | |
| 33.58 | 34.26 | 33.49 | 33.87 | +1.62% | |
| 32.23 | 33.72 | 31.97 | 33.33 | +2.27% | |
| 32.31 | 32.83 | 32.11 | 32.59 | +1.09% | |
| 33.60 | 33.73 | 32.08 | 32.24 | -4.10% | |
| 32.45 | 33.86 | 32.23 | 33.62 | +3.73% | |
| 31.97 | 32.59 | 31.04 | 32.41 | +3.38% | |
| 30.96 | 31.62 | 30.52 | 31.35 | -0.06% | |
| 31.77 | 32.32 | 30.88 | 31.37 | +1.00% | |
| 29.31 | 31.39 | 28.41 | 31.06 | -0.64% | |
| 31.94 | 32.61 | 31.14 | 31.26 | -1.45% | |
| 30.48 | 32.42 | 30.46 | 31.72 | +7.60% | |
| 30.24 | 30.67 | 29.30 | 29.48 | -2.71% | |
| 31.29 | 31.75 | 30.00 | 30.30 | -4.57% | |
| 31.17 | 32.66 | 31.17 | 31.75 | +0.22% | |
| 31.77 | 32.44 | 31.39 | 31.68 | +1.57% | |
| 31.40 | 31.97 | 30.50 | 31.19 | -1.92% | |
| 32.80 | 34.52 | 31.73 | 31.80 | +2.91% | |
| 30.26 | 31.85 | 29.95 | 30.90 | +2.90% | |
| 28.18 | 30.45 | 27.92 | 30.03 | +5.22% | |
| 29.38 | 29.72 | 28.40 | 28.54 | -3.71% | |
| 30.18 | 30.30 | 29.55 | 29.64 | -1.82% | |
| 29.90 | 30.76 | 29.72 | 30.19 | +2.30% | |
| 30.29 | 30.93 | 29.37 | 29.51 | -1.24% | |
| 30.75 | 30.75 | 29.34 | 29.88 | -4.32% | |
| 31.07 | 31.68 | 30.55 | 31.23 | +0.26% | |
| 30.87 | 31.99 | 30.56 | 31.15 | +1.37% | |
| 29.21 | 31.85 | 29.21 | 30.73 | +4.42% | |
| 28.81 | 29.83 | 28.62 | 29.43 | +0.24% | |
| 29.05 | 29.59 | 28.58 | 29.36 | -0.61% | |
| 29.06 | 30.14 | 28.95 | 29.54 | +2.07% | |
| 28.72 | 30.04 | 28.72 | 28.94 | -3.53% | |
| 29.94 | 30.69 | 29.62 | 30.00 | -0.30% | |
| 30.15 | 30.46 | 29.43 | 30.09 | -1.80% | |
| 30.05 | 31.31 | 29.84 | 30.64 | -0.58% | |
| 25.55 | 31.00 | 25.40 | 30.82 | +24.07% | |
| 24.53 | 25.11 | 24.19 | 24.84 | +2.14% | |
| 23.65 | 24.90 | 23.56 | 24.32 | +5.65% | |
| 23.34 | 23.79 | 22.60 | 23.02 | -2.21% | |
| 22.87 | 23.60 | 22.63 | 23.54 | +2.35% | |
| 22.93 | 23.54 | 22.91 | 23.00 | +0.26% | |
| 22.94 | 23.45 | 22.46 | 22.94 | -0.26% | |
| 23.66 | 24.29 | 22.51 | 23.00 | -2.42% | |
| 24.57 | 24.78 | 23.09 | 23.57 | -4.19% | |
| 24.72 | 25.02 | 23.62 | 24.60 | -0.12% | |
| 24.69 | 25.24 | 24.46 | 24.63 | -0.73% | |
| 23.74 | 24.88 | 23.12 | 24.81 | +4.42% | |
| 23.15 | 23.98 | 22.33 | 23.76 | +5.23% | |
| 24.04 | 24.34 | 22.55 | 22.58 | -6.96% | |
| 25.32 | 25.34 | 24.02 | 24.27 | -3.58% | |
| 24.72 | 25.60 | 24.68 | 25.17 | +2.07% | |
| 24.60 | 25.15 | 24.37 | 24.66 | +0.24% | |
| 24.39 | 24.99 | 23.95 | 24.60 | -0.36% | |
| 24.73 | 25.10 | 24.37 | 24.69 | -0.32% | |
| 26.21 | 26.21 | 24.58 | 24.77 | -5.57% | |
| 26.56 | 26.86 | 25.94 | 26.23 | -1.28% | |
| 25.57 | 26.75 | 25.40 | 26.57 | +2.51% | |
| 26.56 | 26.74 | 25.71 | 25.92 | -3.46% | |
| 26.03 | 26.96 | 25.70 | 26.85 | +2.60% | |
| 25.40 | 26.21 | 25.32 | 26.17 | +4.10% | |
| 25.44 | 25.61 | 25.00 | 25.14 | -1.99% | |
| 25.78 | 26.15 | 25.58 | 25.65 | -0.16% | |
| 26.24 | 26.46 | 25.28 | 25.69 | -2.47% | |
| 25.95 | 26.99 | 25.79 | 26.34 | +1.58% | |
| 25.68 | 26.50 | 25.15 | 25.93 | +1.01% | |
| 27.20 | 27.20 | 25.26 | 25.67 | -6.25% | |
| 27.59 | 28.00 | 27.00 | 27.38 | +0.11% | |
| 27.27 | 27.96 | 26.99 | 27.35 | -1.48% | |
| 26.52 | 28.27 | 26.37 | 27.76 | +5.63% | |
| 25.35 | 26.37 | 25.15 | 26.28 | +2.66% | |
| 27.04 | 27.30 | 25.50 | 25.60 | -5.22% | |
| 26.91 | 27.44 | 26.62 | 27.01 | -0.55% | |
| 26.34 | 27.65 | 25.90 | 27.16 | +2.76% | |
| 25.83 | 26.50 | 25.54 | 26.43 | +1.54% | |
| 26.33 | 26.60 | 25.51 | 26.03 | -1.40% | |
| 26.57 | 26.59 | 26.05 | 26.40 | -1.60% | |
| 26.58 | 26.95 | 26.39 | 26.83 | +0.94% | |
| 27.13 | 27.43 | 26.22 | 26.58 | -2.53% | |
| 25.47 | 27.92 | 25.39 | 27.27 | +6.52% | |
| 25.42 | 26.04 | 25.09 | 25.60 | +1.23% | |
| 25.99 | 26.16 | 24.97 | 25.29 | -1.86% | |
| 26.59 | 26.95 | 25.70 | 25.77 | -3.41% | |
| 26.95 | 27.16 | 26.56 | 26.68 | -1.51% | |
| 27.90 | 27.90 | 26.82 | 27.09 | -1.53% | |
| 28.02 | 28.14 | 27.29 | 27.51 | -1.54% | |
| 28.23 | 28.79 | 27.86 | 27.94 | -0.89% | |
| 28.10 | 28.72 | 27.51 | 28.19 | +0.36% | |
| 29.71 | 29.91 | 27.78 | 28.09 | -5.74% | |
| 29.85 | 30.50 | 29.11 | 29.80 | +1.19% | |
| 29.50 | 29.83 | 28.82 | 29.45 | -0.51% | |
| 27.68 | 29.71 | 27.68 | 29.60 | +6.44% | |
| 26.82 | 28.49 | 26.68 | 27.81 | +4.27% | |
| 26.34 | 27.75 | 25.92 | 26.67 | +2.89% | |
| 26.60 | 26.73 | 25.69 | 25.92 | -4.07% | |
| 26.82 | 27.06 | 26.61 | 27.02 | +0.86% | |
| 26.27 | 26.82 | 26.02 | 26.79 | +1.32% | |
| 26.36 | 26.59 | 25.71 | 26.44 | +0.46% | |
| 26.08 | 26.63 | 25.06 | 26.32 | +1.54% | |
| 24.93 | 26.09 | 24.79 | 25.92 | +3.39% | |
| 24.93 | 26.10 | 24.74 | 25.07 | +0.60% | |
| 25.35 | 25.99 | 24.53 | 24.92 | -2.58% | |
| 25.58 | 25.99 | 24.92 | 25.58 | -1.62% | |
| 25.46 | 26.50 | 25.40 | 26.00 | +1.76% | |
| 23.47 | 25.62 | 23.47 | 25.55 | +7.72% | |
| 23.95 | 24.64 | 23.63 | 23.72 | -2.19% | |
| 24.22 | 25.03 | 23.67 | 24.25 | -0.49% | |
| 22.26 | 24.77 | 22.10 | 24.37 | +7.50% | |
| 23.28 | 23.55 | 22.30 | 22.67 | -1.00% | |
| 23.26 | 23.26 | 22.50 | 22.90 | -1.55% | |
| 23.49 | 23.77 | 23.01 | 23.26 | -1.98% | |
| 23.86 | 24.14 | 23.29 | 23.73 | -0.50% | |
| 24.00 | 24.75 | 23.65 | 23.85 | -3.64% | |
| 26.46 | 26.80 | 24.40 | 24.75 | -7.41% | |
| 26.00 | 26.85 | 25.69 | 26.73 | +2.81% | |
| 25.92 | 26.65 | 25.90 | 26.00 | +0.04% | |
| 26.85 | 27.01 | 25.70 | 25.99 | -3.95% | |
| 27.24 | 27.65 | 26.80 | 27.06 | -1.13% | |
| 26.82 | 27.85 | 26.80 | 27.37 | +2.43% | |
| 26.62 | 26.77 | 26.18 | 26.72 | +1.75% | |
| 26.80 | 26.90 | 25.97 | 26.26 | -1.72% | |
| 27.91 | 28.20 | 26.55 | 26.72 | -4.26% | |
| 28.03 | 28.59 | 27.44 | 27.91 | +0.87% | |
| 27.58 | 27.80 | 26.60 | 27.67 | +3.13% | |
| 26.35 | 27.01 | 26.03 | 26.83 | +1.05% | |
| 27.53 | 27.89 | 26.17 | 26.55 | -2.89% | |
| 26.21 | 27.73 | 26.10 | 27.34 | +3.29% | |
| 26.81 | 27.44 | 26.45 | 26.47 | -2.43% | |
| 24.87 | 27.40 | 24.50 | 27.13 | +1.34% | |
| 27.62 | 27.74 | 26.31 | 26.77 | -2.80% | |
| 27.20 | 27.98 | 26.96 | 27.54 | — |
Prices are adjusted for stock splits. See adjusted closing price for how dividends and splits affect history, and the CLDX chart for longer ranges.