David Einhorn's position in BlackRock Institutional Trust Company N.A. - BTC iShares Silver Trust is currently worth $31.1 Million. That's 1.98% of their equity portfolio (14th largest holding). The investor owns 27.74% of the outstanding BlackRock Institutional Trust Company N.A. - BTC iShares Silver Trust stock. The investor's estimated purchase price is $35 Million, resulting in a loss of 11%.