How to Say "stock index" in Spanish
The Spanish word for “stock index” is “selectivo” — C1 level.
English → SpanishC1
nounC1formal
specifically the IBEX 35 in Spain

Examples
El selectivo español cayó un dos por ciento hoy.
The Spanish stock index fell two percent today.
The 'Hidden' Meaning
In financial news, people say 'el selectivo' as a shortcut for 'el índice selectivo' (the selective index).
Related Translations
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