Robert Half Inc (RHI) Historical Volatility

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

Robert Half International Inc. provides staffing and risk consulting services in North America, South America, Europe, Asia, and Australia. The company operates through three segments: Temporary and Consultant Staffing, Permanent Placement Staffing, and Risk Consulting and Internal Audit Services. It places temporary services for accounting, finance, and bookkeeping; temporary and full-time office and administrative personnel consisting of executive and administrative assistants, receptionists, and customer service representatives; full-time accounting, financial, tax, and accounting operations personnel; and information technology contract professionals and full-time employees in the areas of platform systems integration to end-user technical and desktop support, including specialists in application development, networking and cloud, systems integration and deployment, database design and administration, and security and business continuity.

The company also offers temporary and full-time employees in attorney, paralegal, legal administrative, and legal secretarial positions; and senior-level project professionals in the accounting and finance fields for financial systems conversions, expansion into new markets, business process re-engineering, business systems performance improvement, and post-merger financial consolidation. It is involved in serving professionals in the areas of creative, design, marketing, advertising, and public relations; and placing various positions, such as creative directors, graphics designers, web designers, media buyers, front end developers, copywriters, digital marketing managers, marketing analytics specialists, brand managers, and public relations specialists. The company provides internal audit, technology consulting, risk and compliance consulting, and business performance services. It serves clients and employment candidates. Robert Half International Inc. was founded in 1948 and is headquartered in Menlo Park, 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 Robert Half Inc's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where RHI HV is running hot, cold, or in line. Make the RHI 30 day historical volatility — and every other window — work for your edge instead of against it.