Rare Earth: Avalon Jumps 20%, No News (AVL; MCP; REE)

The stock is up 20.67% at $7.52.
As we saw in "Rare Earths: What's in Your Mine? (MCP; REE; RES.tsxv; AVL.TO)" the company actually has a better mix of the rare earth elements than Molycorp.
The stock went on the AMEX on Dec. 22.