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Second-Order Greeks

FreeValueStandardPro

Get second-order Greeks snapshot (gamma, vanna, charm) for an option contract.

  • Retrieve a real-time last second order greeks calculation for all option contracts that lie on a provided expiration.
  • You might need to change the default expiration date to a different date if it is past the current date. Some quotes are omitted in the example to reduce the space of the sample output.
  • Make expiration * if you want to get the snapshot for every expiration chain for the underlying.

This endpoint will return no data if the market was closed for the day. Theta Data resets the snapshot cache at midnight ET every night.

rust
pub fn option_snapshot_greeks_second_order(&self, symbol: &str, expiration: &str) -> OptionSnapshotGreeksSecondOrderBuilder<'_>

Optional parameters chain on the builder: .strike(&str), .right(&str), .annual_dividend(f64), .rate_type(&str), .rate_value(f64), .stock_price(f64), .version(&str), .max_dte(i32), .strike_range(i32), .min_time(&str), .use_market_value(bool). Execute with .awaitResult<Vec<GreeksSecondOrderTick>, Error>, or decode chunk-by-chunk with .stream(handler).

Example

rust
let rows = tdx
    .option_snapshot_greeks_second_order("SPY", "20250321")
    .strike("570")
    .right("C")
    .await?;
for t in &rows {
    println!("date={} gamma={} vanna={} charm={}", t.date, t.gamma, t.vanna, t.charm);
}

Parameters

NameTypeRequiredDefaultDescription
symbolstringyesTicker symbol (e.g. AAPL)
expirationdateyesExpiration date YYYYMMDD
strikestringno*Strike price in dollars as a string (e.g. 500 or 17.5). Use * for wildcard selection.
rightstringnobothOption side. Accepted values: call, put, both.
annual_dividendfloatnoAnnualized expected dividend amount, in dollars per share, used in the Greeks calculation (e.g. 2.5 is $2.50 per share per year).
rate_typestringnosofrRisk-free-rate source used in the Greeks calculation. Accepted values: sofr, treasury_m1, treasury_m3, treasury_m6, treasury_y1, treasury_y2, treasury_y3, treasury_y5, treasury_y7, treasury_y10, treasury_y20, treasury_y30.
rate_valuefloatnoInterest rate as a percent (4.36 means 4.36%, matching the InterestRateTick.rate convention) used in the Greeks calculation. Applied when rate_type selects a manual rate.
stock_pricefloatnoUnderlying price in dollars used in the Greeks calculation, overriding the observed underlying when set.
versionstringnolatestGreeks model version. Accepted values: latest, 1.
max_dteintnoMaximum days to expiration
strike_rangeintnoStrike range filter
min_timestringnoMinimum time filter
use_market_valueboolnofalseWhen true, calculate Greeks against the option market value (mid-price) instead of the NBBO bid/ask pair.
timeout_msintnoPer-request deadline in milliseconds. 0 means no deadline.

Response

Rows of GreeksSecondOrderTick:

FieldTypeDescription
ms_of_dayi32Milliseconds since midnight Eastern Time.
bidf64Last NBBO bid price.
askf64Last NBBO ask price.
gammaf64Rate of change of delta with respect to the underlying price.
vannaf64Sensitivity of delta to a change in implied volatility.
charmf64Rate of change of delta over time.
vommaf64Sensitivity of vega to a change in implied volatility.
vetaf64Rate of change of vega over time.
implied_volatilityf64Implied volatility solved from the option price.
iv_errorf64Residual pricing error of the implied-volatility solve.
underlying_ms_of_dayi32Timestamp of the underlying price, milliseconds since midnight ET.
underlying_pricef64Underlying price used in the calculation (midpoint of the underlying).
datei32Trading date as a YYYYMMDD integer.

Wildcard requests additionally populate expiration (YYYYMMDD), strike (dollars), and right ("C" / "P") on every row to identify the contract; on single-contract requests these are absent (None / null / undefined; the Rust and C rows carry the documented 0 / 0.0 / '\0' fills).

Released under the Apache-2.0 License.