Twitter held talks in recent months to acquire Clubhouse, the buzzy audio-based social network, Bloomberg reported Wednesday, citing people familiar with the matter. From the report: The companies discussed a potential valuation of roughly $4 billion for Clubhouse, the people said, asking not to be identified because the matter is private. Discussions are no longer ongoing, and it’s unclear why they stalled, the people added. […] Clubhouse is barely a year old but has drawn appearances from some of the biggest names in business and Hollywood. Established social media companies have quickly gone to work on their own versions of Clubhouse, including Twitter. Facebook is exploring one, too, and Microsoft’s LinkedIn and Slack have also said they’re working on similar features for their networks.