Grifols (NSDQ:GRFS) said today it invested $50 million in clinical diagnostic tech developer Singulex, giving Grifols a 20% stake in the company. Grifols’ investment in Singulex now has a fully-diluted pre-money valuation of $200 million, the company said in an SEC filing. Along with the investment, Grifols will be entitled to appoint a director to serve […]