CatalanXavier Sala-i-Martin is on Twitter (X) as @XSalaimartin, with 480,325 followers and 34,412 posts. It has been on X since August 2009, an account age of 17 years.
Engagement
Early reading. We have captured 5 original posts for this account, below the 8 we require before treating a median as settled. The numbers above describe what we have seen so far, not a finished profile of the account.
A typical post picks up 164 interactions against 480K followers, an engagement rate of 0.034%. Posts are seen about 17K times each, and 0.939% of those impressions turn into an interaction. That is about 3.63% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.63 post a day over the last 30 days, though only 33% of days saw any activity at all.
Measured over 5 original posts from a 30-day window, last computed on October 23, 2026. Recurring tag: #michaelwoodford.
Full engagement reportFollower growth
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Bio
Author of "Economia de la IA". Professor at Columbia University. I block trolls (especially Florentinians), abusers and would-be censors. No exceptions.
Notable followers
The biggest accounts in our directory following @XSalaimartin.
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Xavier Sala-i-Martin on Twitter (X) - frequently asked questions
- What is the Twitter handle for Xavier Sala-i-Martin?
- Xavier Sala-i-Martin posts on Twitter (X) as @XSalaimartin. The profile is at x.com/XSalaimartin, and the View on X button at the top of this page opens it.
- How many followers does Xavier Sala-i-Martin have on Twitter?
- Xavier Sala-i-Martin (@XSalaimartin) has 480,325 followers on Twitter (X). The count is refreshed continuously from public data.
- When did Xavier Sala-i-Martin join Twitter?
- Xavier Sala-i-Martin joined Twitter (X) in August 2009. The @XSalaimartin account is 17 years old. Searches for Xavier Sala-i-Martin age often mean a personal age, which we do not publish. The figure here is the account age only.