Grifols SA ADR (GRFS) Historical Volatility

Tracking GRFS historical volatility helps you see how much Grifols SA ADR'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, Grifols SA ADR's HV tells you what really happened. Use our scanner to monitor GRFS 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 GRFS 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing Grifols SA ADR'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.

Grifols, S.A. engages in the procurement, manufacture, preparation, and sale of therapeutic products, primarily hemoderivatives. The company operates through Bioscience, Hospital, Diagnostic, Bio Supplies, and Others divisions. The Bioscience division researches, develops, produces, and markets plasma-derived medicines and other innovative solutions to treat patients with chronic, rare, prevalent, and life-threatening diseases. It offers immunoglobulins, alpha-1 antitrypsin, albumin, clotting factors, and hyperimmune globulins. The Hospital division offers non-biological pharmaceutical products and medical supplies clinical nutrition, intravenous therapy, and medical devices.

The Diagnostic division researches, develops, produces, and commercializes diagnostic products that span the healthcare continuum–from prevention, screening, diagnosis, and prognosis to disease and treatment monitoring–to serve professionals. The Bio Supplies division provides biological materials for life-science research, clinical trials, and for manufacturing pharmaceutical and diagnostic products. Its products and services are used by healthcare providers to diagnose and treat patients with hemophilia, immune deficiencies, infectious diseases, and other medical conditions. The company serves public and private customers; and wholesalers, distributors, group purchasing organizations, blood banks, hospitals and care institutions, and national health systems. Grifols, S.A. has a technology collaboration agreement with Mondragon. The company was founded in 1940 and is headquartered in Barcelona, Spain.

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 Grifols SA ADR's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where GRFS HV is running hot, cold, or in line. Make the GRFS 30 day historical volatility — and every other window — work for your edge instead of against it.