Stanley Druckenmiller's position in Builders Firstsource is currently worth $13.5 Million. That's 0.73% of their equity portfolio (30th largest holding). The first Builders Firstsource trade was made in Q1 2021. Since then Stanley Druckenmiller bought shares one more times and sold shares on two occasions. The stake costed the investor $10.6 Million, netting the investor a gain of 27% so far.