Blackrock Inc
Blackrock Inc (BLK) Historical Volatility
BLK 30-day historical volatility is 23%. This ranks in the 23th percentile of readings over the past year.
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Tracking BLK historical volatility helps you see how much Blackrock 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, Blackrock Inc's HV tells you what really happened. Use our scanner to monitor BLK 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 BLK 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing Blackrock 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.
BlackRock, Inc. is a publicly owned investment manager. The firm primarily provides its services to institutional, intermediary, and individual investors including corporate, public, union, and industry pension plans, insurance companies, third-party mutual funds, endowments, public institutions, governments, foundations, charities, sovereign wealth funds, corporations, official institutions, and banks. It also provides global risk management and advisory services. The firm manages separate client-focused equity, fixed income, and balanced portfolios. It also launches and manages open-end and closed-end mutual funds, offshore funds, unit trusts, and alternative investment vehicles including structured funds.
The firm launches equity, fixed income, balanced, and real estate mutual funds. It also launches equity, fixed income, balanced, currency, commodity, and multi-asset exchange traded funds. The firm also launches and manages hedge funds. It invests in the public equity, fixed income, real estate, currency, commodity, and alternative markets across the globe. The firm primarily invests in growth and value stocks of small-cap, mid-cap, SMID-cap, large-cap, and multi-cap companies. It also invests in dividend-paying equity securities. The firm invests in investment grade municipal securities, government securities including securities issued or guaranteed by a government or a government agency or instrumentality, corporate bonds, and asset-backed and mortgage-backed securities. It employs fundamental and quantitative analysis with a focus on bottom-up and top-down approach to make its investments. The firm employs liquidity, asset allocation, balanced, real estate, and alternative strategies to make its investments. In real estate sector, it seeks to invest in Poland and Germany. The firm benchmarks the performance of its portfolios against various S&P, Russell, Barclays, MSCI, Citigroup, and Merrill Lynch indices. BlackRock, Inc. was founded in 1988 and is based in New York City with additional offices in Boston, Massachusetts; London, United Kingdom; Gurgaon, India; Hong Kong; Greenwich, Connecticut; Princeton, New Jersey; Edinburgh, United Kingdom; Sydney, Australia; Taipei, Taiwan; Singapore; Sao Paulo, Brazil; Philadelphia, Pennsylvania; Washington, District of Columbia; Toronto, Canada; Wilmington, Delaware; and San Francisco, 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 Blackrock Inc's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where BLK HV is running hot, cold, or in line. Make the BLK 30 day historical volatility — and every other window — work for your edge instead of against it.
As of September 25, 2026
As of September 25, 2026
See how volatility has moved over time
Track BLK historical volatility, spot where IV and realized volatility diverge, and find options that are priced in your favor right now.
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