Ten years after selling Periscope to Twitter, startup's co-founder raises $40 million for Macroscope ○ found 2025 › Sep › 17 (Wed) @ 16:30 UTC a story from CNBC ⚠️ › Top News Periscope ■■ Twitter ■■ Macroscope ■■ Kayvon ■■ Beykpour ■■ preview sentiment