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2012issue C0982-84

True range overlays versus isolated bar context

A printed bar leaves out the prior close that observers already use to judge the period. Folding that close into true high, true low, and true range turns a single print into a short-horizon regime observation. Editorial view: implied volatility, historical volatility, and option premium need the same prior-period context before they can justify a standalone trade.

  • A period's printed high and low are incomplete once the immediately prior close is treated as part of the current data set.
  • True range is the span between true high and true low, not the printed high and low alone.
  • True internals average the current true high, true low, and close with the prior close. True peripherals then record the true high or true low by comparing successive true means.
  • Editorial view: implied volatility, historical volatility, and option premium should meet the same prior-period test before they stand as a complete trade justification.
Entries in this reading3 entries
Current trackHistorical volatility analysis47 readingsOption premium analysis47 readingsImplied volatility analysis70 readings

An isolated bar is not a complete read

The historical workflow does not read a period from its printed high and low alone. The construction treats a trace of the prior close as part of the current data set because observers already judge present activity against the immediately preceding period.

A period's true high is whichever is higher: that period's printed high or the immediately prior close. A period's true low is whichever is lower: that period's printed low or the immediately prior close. The current period's true range is computed from those true high and true low points, not from the printed high and low alone.

True internals and true peripherals

True internals average four values: the current true high, the current true low, the current close, and the prior close. That average keeps the rebuilt range and both closes inside one reading.

True peripherals first average the current true high and true low into a true mean, then compare that true mean with the prior period's true mean. If the current true mean is above the prior true mean, true peripherals record the true high. If it is below, they record the true low.

The same series, with and without the overlay

The worked example uses the same daily industrial-average high-low-close series, shown first as a standard bar display and then with each overlay.

Editorial view: the overlay does not turn one bar into a complete justification for a trade. It only shows that implied volatility, historical volatility, and option premium still inherit the same prior-close gap whenever they are read from an isolated print. The registered use of those methods is to put a single trade into a diversified or regime-aware context over weeks to months, using cross-market prices, volatility, carry, and portfolio weights.

Educational research material, not investment advice. Historical source context does not establish present-day performance.
21 of 31 in the Historical volatility analysis track
201275-75 pp.Next on Historical volatility analysisConstructing regime context for option premium tradesConstruction means assembling data, platforms, and weights so implied volatility, historical volatility, and option-premium analysis can be read on the same inputs before a trade is sized.
All readings on this track · 31 readings
  1. 1985Putting listed option premiums in volatility-regime context
  2. 1988When volatility, not direction, selects the option spread
  3. 1988Path-aware volatility for option-replication cost
  4. 1989Option premium inside a volatility regime
  5. 1990Constructing consistent historical and implied volatility
  6. 1991Weekly close-to-close volatility as a horizon filter
  7. 1995A modified volatility construction for weeks-to-months regimes
  8. 1996Option smiles as a critique of constant volatility
  9. 1996Pairing short and long historical volatility for regime context
  10. 1998Normalized multi-horizon historical volatility construction
  11. 2001Park one options idea inside an implied and historical volatility regime
  12. 2002Constructing vertical spreads inside seasonal volatility regimes
  13. 2002Volatility regime context for option straddles
  14. 2003Option spread construction with volatility regime checks
  15. 2003Trend and volatility filters for option spread choice
  16. 2005Constructing vertical spreads inside volatility regimes
  17. 2006Implied volatility doubling as a commodity regime signal
  18. 2007A butterfly reversal call when implied volatility sits near historical volatility
  19. 2012Evaluate a broken-wing butterfly inside a volatility and premium regime
  20. 2012Regime-aware equity construction via carry and risk premium
  21. 2012True range overlays versus isolated bar context
  22. 2012Constructing regime context for option premium trades
  23. 2013Construct a ranked volatility switch before the trend filter fires
  24. 2013Combining Relative Strength Index, historical volatility, and Bollinger %b screens
  25. 2014A headline equity high is incomplete until the nominal-real spread is read
  26. 2015Daily implied volatility skew as a portfolio benchmark
  27. 2015Rebuild a volatility-skew template from size and slope
  28. 2015Evaluating concentrated winners with volatility and option premiums
  29. 2017Option book construction from implied volatility, historical volatility and premium
  30. 2018One-year volatility as the backdrop for short-horizon option trades
  31. 2019A low-volatility ETF sleeve inside a 2011 to 2019 market-regime case study
By fieldOptions and volatility171 readingsBy year201281 readings
All 47 readings tagged Historical volatility analysis
Also on Historical volatility analysis5 readings
1985Putting listed option premiums in volatility-regime contextOption premium analysis1988Path-aware volatility for option-replication costOption premium analysis1989Option premium inside a volatility regime1995A modified volatility construction for weeks-to-months regimesOption premium analysis1996Option smiles as a critique of constant volatilityOption premium analysis