ticker
The underlying symbol that represents the stock or index on which the option is based.
tradeDate
The date on which the option was traded.
expirDate
The date on which the option expires.
dte
The number of days remaining until the option's expiration date.
strike
The price at which the option can be exercised.
stockPrice
The current price of the underlying stock. For indexes, this is the solved implied futures price for each expiration.
callVolume
The total number of call option contracts traded on a particular day total at the time observed.
callOpenInterest
The total number of outstanding call option contracts updated by OCC the night before.
callBidSize
The number of call option contracts available at the current national best bid and offer (NBBO) bid price.
callAskSize
The number of call option contracts available at the current NBBO ask price.
putVolume
The total number of put option contracts traded on a particular day total at the time observed.
putOpenInterest
The total number of outstanding put option contracts updated by OCC the night before.
putBidSize
The number of put option contracts available at the current NBBO bid price.
putAskSize
The number of put option contracts available at the current NBBO ask price.
callBidPrice
The NBBO price at which a market maker is willing to buy a call option.
callValue
The theoretical value of a call option based on a smooth volatility assumption.
callAskPrice
The NBBO price at which a market maker is willing to sell a call option.
putBidPrice
The NBBO price at which a market maker is willing to buy a put option.
putValue
The theoretical value of a put option based on a smooth volatility assumption.
putAskPrice
The NBBO price at which a market maker is willing to sell a put option.
callBidIv
The implied volatility of a call option at the current NBBO bid price.
callMidIv
The implied volatility of a call option at the midpoint of the current NBBO bid and ask prices.
callAskIv
The implied volatility of a call option at the current NBBO ask price.
smvVol
The smoothed implied volatility of an option based on the ORATS model.
putBidIv
The implied volatility of a put option at the current NBBO bid price.
putMidIv
The implied volatility of a put option at the midpoint of the current NBBO bid and ask prices.
putAskIv
The implied volatility of a put option at the current NBBO ask price.
residualRate
The implied interest rate that is derived from the option pricing model.
delta
The theoretical increase in an option's price due to a one dollar increase in the underlying price.
gamma
The rate of change of an option's delta with respect to a one dollar increase in the price of the underlying asset.
theta
The rate of time decay of an option's value for one day.
vega
The sensitivity of an option's price to a one percent rise in the implied volatility of the option.
rho
The sensitivity of an option's price to a one percent increase in interest rates for the option.
phi
A measure of the convexity of an option's price with respect to changes in the price of the underlying asset.
driftlessTheta
The rate of time decay of an option's value as the expiration date approaches, without taking into account the drift in the price of the underlying asset.
callSmvVol
The smoothed implied volatility of a call option based on the ORATS model.
putSmvVol
The smoothed implied volatility of a put option based on the ORATS model.
extSmvVol
The external implied volatility of the underlying asset, as provided by an external data source. The external data source is from the ORATS forecast volatility.
extCallValue
The external theoretical value of a call option, as provided by an external data source.
extPutValue
The external theoretical value of a put option, as provided by an external data source.
spotPrice
The current market price of the underlying asset. For indexes this is the cash price.
quoteDate
The date and time at which the market quote used to calculate the SMV (option's greeks, skew, and other related values) was recorded.
updatedAt
The date and time at which the calculation of the option's greeks, skew, and other related values was completed.
snapShotEstTime
The time (EST) at which a one-minute snapshot of the SMV strikes was taken.
snapShotDate
The date and time at which a one-minute snapshot of the SMV strikes was taken.