Iluka Resources has a 3-Year high breakout of a massive pattern, visible even in a weekly chart. If you search a Stock that can double up in 2018 - i guess this chance could be a good one.
It`s a mining company that mines rutile, ilmenite, and zircon. It was or is the biggest producer of zircon. All these metals are important for production of Titanium. Just a few days ago i read at Bloomberg that commodities could be booming in 2018. So a mining company is sure not the worst choice for a 2018 portfolio.