What causes markets to rise or fall doesn’t matter as much as you think. Irusha Peiris, O’Neil Global portfolio manager, joins Investor’s Business Daily’s “Investing with IBD” podcast to discuss the importance of focus, the value of rejecting market opinions and why interpreting is better than predicting markets. Peiris ends with a look at cybersecurity firm CrowdStrike (CRWD), homebuilder D.R. Horton (DHI) and mining company Southern Copper (SCCO).