The Rock Health accelerator for digital health did some tracking of its own–2012 investment action in the wide, wild world of digital health. Good news: investments were up 45% vs. 2011 to $1.4 billion. Not so great news: more than 20% of that was due to five large deals; out of 179 companies, only eight had invested in three or more companies. Many of the eight are familiar: Qualcomm Ventures, Aberdare Ventures, Merck Global Health Innovation Fund, NEA, West Health Investment Fund, BlueCross BlueShield Venture Partners, Council Capital and the ubiquitous Khosla Ventures. Most of these investments funded technologies relating to consumer engagement and personal health tracking. According to the bar chart in the article, most deals exceeded $5 million. Rock Health’s presentation (Slideshare). MedCityNews article.