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Finance Dictionary and Glossary of Investment Terms
Same-day substitution
Definition 1.
Offsetting changes in a margin account during the day that result in no overall change in the balance of the account.
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Definition 2.
Offsetting changes in a margin account, over the trading day, that result in no overall change in the value of the account. When a same-day substitution is made, a margin call is not generated.
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