The Wheat ETF (WEAT) is up 40% since the end of February. It is trading at a 8cent premium to its NAV, which is way above normal. Commodity ETFs operate differently from equity ETFs, which can simply issue new shares to meet rising demand, keeping the premium down. Teucrium Trading issued all of its shares and was forced to stop creations of the ETF until the SEC had reviewed its request to offer more shares. “We have sold out of the shares that we had registered for issuance and have applied to the SEC to have new shares registered so we can start to issue creates,” said Jake Hanley at Teucrium.