what was twitter's highest market cap and when and what was it when musk bought and when was that

Twitter’s highest market cap appears to have been about $73 billion , reached in early 2014 after its IPO-era surge. Musk bought Twitter in October 2022 ; the deal closed on October 27, 2022 , and the company’s market cap around then was about $41.09 billion on October 28, 2022.

Timing

• Highest market cap: roughly $73B in 2014.
• Musk acquisition: October 2022 , closing on October 27, 2022.

• Market cap when he bought it: about $41.09B around the closing date.

Useful nuance

The “highest market cap” is usually described from Twitter’s public-company period, and different market-data sources can vary a bit depending on the exact trading day used. The acquisition price was $44B , which was higher than the market cap around closing because buyout deals include a premium.

TL;DR

Twitter’s peak was about $73B in 2014 , and Musk bought it in late October 2022 when it was worth about $41.09B on the public market.