Joel Greenblatt's position in ProShares Trust - ProShares Short VIX Short-Term Futures ETF -1x Shares is currently worth $507k. That's 0.00% of their equity portfolio (1319th largest holding). The investor owns 1.67% of the outstanding ProShares Trust - ProShares Short VIX Short-Term Futures ETF -1x Shares stock. The investor's estimated purchase price is $555k, resulting in a loss of 8.6%.