There's a company in Chicago called TempoIQ (formerly TempoDB) that is working on a time series database. https://www.tempoiq.com/ https://www.tempoiq.com/ I'

There's a company in Chicago called TempoIQ (formerly TempoDB) that is working on a time series database. https://www.tempoiq.com/ https://www.tempoiq.com/ I'm not affiliated with them, I just met them once.