4. Kleiner Perkins Caufield & Byers

Kleiner Perkins Caufield & Byers invests in big data, security and digital health companies surrounding the Internet of Things. The company was an early investor in home automation and smart thermostat manufacturer Nest.

Kleiner Perkins Caufield & Byers was particularly active in the first quarter of 2016, with investments in four IoT companies in the quarter – Ring, Motiv, Enlighted and Airware. Its IoT portfolio includes big names like consumer drone technology manufacturer DJI and Wi-Fi streaming security video camera company Dropcam.