Options glossary · The Greeks
Four times the time to expiry is roughly half the daily theta, so decay accelerates as expiry approaches. The same at-the-money position pays about twice the daily theta with one day left as it does with four.
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Sven Hubens, ten years an options market maker at Optiver and Maven, adjunct faculty at The Options Institute at Cboe.
Education, not advice. Amsterdam Investment Club is not licensed by the AFM to give individual investment advice.