Roll for a credit
Definition · Level 3 · Spreads & short options
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Repositioning a short option where the new contract brings in more premium than the old one costs to buy back — you are paid to add time or move the strike.
Example
Buy back at 2.20, sell the new put at 2.60 → +0.40.
Where Tradecraft teaches it
Level 3 · Spreads & short options, in the lesson “Rolling and defending”: Rolling out, down and up; rolling for a credit; and when to close instead.
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