ProShares Ultra Silver (AMEX:AGQ) plunged 59.9% in today's trading, closing at $160.15.
The Financial Services stock traded 37,646,492 shares, 9.7x its average daily volume of 3,894,417.9 shares.
ProShares Ultra Silver has a market capitalization of $1.9B. The stock has gained 0.0% year-to-date.