{"slug":"what-is-option-vega","qid":"vega_dte","label":"At-the-money SPY vega grows with time to expiry (2026-07-13)","post_title":"What Is Option Vega? Volatility Sensitivity","post_url":"/blog/what-is-option-vega#q-vega_dte","columns":["time_to_expiry","avg_vega"],"rows":[{"time_to_expiry":"0-7 days","avg_vega":0.295},{"time_to_expiry":"8-30 days","avg_vega":0.594},{"time_to_expiry":"31-90 days","avg_vega":1.137},{"time_to_expiry":"90+ days","avg_vega":2.741}],"shape":"ranking","sql":"SELECT multiIf(days_to_expiry<=7,'0-7 days',days_to_expiry<=30,'8-30 days',\n               days_to_expiry<=90,'31-90 days','90+ days') AS time_to_expiry,\n       round(avg(vega), 3) AS avg_vega\nFROM global_markets.options_greeks\nWHERE date = '2026-07-13' AND underlying_symbol = 'SPY' AND abs(delta) BETWEEN 0.45 AND 0.55\nGROUP BY time_to_expiry ORDER BY min(days_to_expiry)","computed_at":"2026-08-13T14:46:39.849242+00:00","elapsed":0.001724867}