Celldex Therapeutics Inc
Celldex Therapeutics Inc (CLDX) Historical Volatility
CLDX's 30 day historical volatility is 47.28%, in the 50th percentile of readings over the past year. This is an average percentile, meaning Celldex Therapeutics Inc shares have moved roughly in line with their typical range. CLDX's 30 day implied volatility sits at 65.92%, with an IV Rank of 39.68%, leaving IV 18.64 points above historical volatility. This means options are pricing in more movement than the stock has actually delivered, as of Nov 5, 2026.
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Tracking CLDX historical volatility helps you see how much Celldex Therapeutics Inc's stock price has actually moved, giving you a baseline for whether option premiums look fair, cheap, or expensive. While implied volatility shows what the market expects, CLDX's HV, also known as realized volatility, shows what actually happened. Use our scanner to monitor CLDX 30 day historical volatility alongside longer lookback windows and spot the moments when realized and implied diverge.
Historical volatility is the annualized standard deviation of a stock's past returns, typically measured over rolling windows like 10, 20, 30, or 60 days. CLDX's 30 day historical volatility, or CLDX HV, is one of the most widely watched readings because it balances responsiveness with stability. Comparing CLDX's HV to its implied volatility reveals the volatility risk premium. When IV sits well above HV, options are pricing in more movement than the stock has actually delivered, giving option sellers an edge. When HV runs hot relative to IV, options are pricing in less movement than the stock has delivered, and buyers may be underpaying for it.
Celldex Therapeutics, Inc., a biopharmaceutical company, engages in developing therapeutic monoclonal and bispecific antibodies for the treatment of various diseases. Its drug candidates include antibody-based therapeutics to treat patients with inflammatory diseases and various forms of cancer. The company's clinical development programs CDX-0159, a Phase I monoclonal antibody that binds the receptor tyrosine kinase KIT and inhibits its activity; CDX-1140, a human agonist monoclonal antibody targeted to CD40, a key activator of immune response, which is found on dendritic cells, macrophages, and B cells, as well as is expressed on various cancer cells; and CDX-527, a bispecific antibody, which uses the company's proprietary active anti-PD-L1 and CD27 human antibodies to couple CD27 costimulation with blockade of the PD-L1/PD-1 pathway to help prime and activate anti-tumor T cell responses through CD27 costimulation.
Historical Volatility
Historical movement is near its typical level for the past year. Neither unusually calm nor unusually active.
As of Nov 5, 2026
As of Nov 5, 2026
As of Nov 5, 2026
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