Halozyme Therapeutics Inc
Halozyme Therapeutics Inc (HALO) Historical Volatility
HALO 30-day historical volatility is 25%. This ranks in the 7th percentile of readings over the past year.
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Tracking HALO historical volatility helps you see how much Halozyme Therapeutics Inc's stock price has actually moved over past periods, giving you a baseline to judge whether current option premiums are fair, cheap, or expensive. While implied volatility tells you what the market expects, Halozyme Therapeutics Inc's HV tells you what really happened. Use our scanner to monitor HALO 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 an underlying's past returns, typically measured over rolling windows like 10, 20, 30, or 60 days. The HALO 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing Halozyme Therapeutics Inc's HV to its implied volatility reveals the volatility risk premium — when IV sits well above HV, option sellers tend to have an edge; when HV runs hot relative to IV, buyers may be underpaying for movement.
Halozyme Therapeutics, Inc. operates as a biopharma technology platform company in the United States, Switzerland, Ireland, Belgium, Japan, and internationally. The company's products are based on the ENHANZE drug delivery technology, a patented recombinant human hyaluronidase enzyme (rHuPH20) that enables the subcutaneous delivery of injectable biologics, such as monoclonal antibodies and other therapeutic molecules, as well as small molecules and fluids. Its flagship product is Hylenex recombinant, a formulation of rHuPH20 to facilitate subcutaneous fluid administration for achieving hydration to enhance the dispersion and absorption of other injected drugs in subcutaneous urography and to improve resorption of radiopaque agents.
The company also develops Perjeta; RITUXAN HYCELA and MabThera SC for the treatment of non-Hodgkin lymphoma and chronic lymphocytic leukemia (CLL); RITUXAN SC for patients with CLL; and HYQVIA for the treatment of immunodeficiency disorders. In addition, it is developing Tecentriq for non-small cell lung cancer; OCREVUS for multiple sclerosis; DARZALEX for the treatment of patients with amyloidosis, smoldering myeloma, and multiple myeloma; nivolumab for the treatment of solid tumors; ARGX-113, a human neonatal Fc receptor; ARGX-117 to treat autoimmune diseases; and BMS-986179, an anti-CD-73 antibody. The company has collaborations with F. Hoffmann-La Roche, Ltd.; Hoffmann-La Roche, Inc.; Baxalta US Inc.; Baxalta GmbH; Pfizer Inc.; Janssen Biotech, Inc.; AbbVie, Inc.; Eli Lilly and Company; Bristol-Myers Squibb Company; Alexion Pharma Holding; ARGENX BVBA; Horizon Therapeutics plc; National Institute of Allergy and Infectious Diseases; Centre for the AIDS Programme of Research in South Africa; and ViiV Healthcare Limited for small and large molecule targets for the treatment and prevention of HIV. Halozyme Therapeutics, Inc. was founded in 1998 and is based in San Diego, California.
Sizing a long premium trade, modeling a covered call, or hunting volatility arbitrage all come back to one question: how much has the stock actually moved? Our scanner puts Halozyme Therapeutics Inc's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where HALO HV is running hot, cold, or in line. Make the HALO 30 day historical volatility — and every other window — work for your edge instead of against it.
As of September 29, 2026
As of September 29, 2026
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Track HALO historical volatility, spot where IV and realized volatility diverge, and find options that are priced in your favor right now.
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