This article is part of the Rising Star Portfolios series.

The Dada Portfolio's first purchase, China Yida (Nasdaq: CNYD), has run up 20% in a week. What kind of insanity is this? Watch the video and then read on below:

Sean Sun doesn't own shares of any company mentioned. Ilan Moscovitz owns shares of Walt Disney. Walt Disney is a Motley Fool Inside Value pick. Walt Disney is a Motley Fool Stock Advisor choice. The Fool owns shares of China Yida Holding. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.