Jim Simons's position in Dexcom is currently worth $377 Thousand. That's 0.00% of their equity portfolio (2736th largest holding). The first Dexcom trade was made in Q2 2013. Since then Jim Simons bought shares 21 more times and sold shares on seventeen occasions. The stake costed the investor $276 Thousand, netting the investor a gain of 37% so far.