Heico Corporation (HEI) shares are up 1.06% to $280.30 as of 1:10 pm on Friday, compared to its previous close of $277.35 on November 21st. The stock's upward movement today appears to be influenced by Berkshire Hathaway's strategic investment in the company, which has been a significant driver of Heico's stock performance. Since Berkshire's entry into Heico in the second quarter, the aerospace company's stock has surged by 25%, reflecting investor confidence in Heico's business model and its alignment with Warren Buffett's investment philosophy.