Core Insights - The article reflects on the importance of learning from past investment decisions, highlighting two stocks that have provided valuable lessons and solid returns [1][2] Group 1: Amazon Case Study - Amazon's Fire Phone was a significant misstep, leading to the decision to sell the stock despite its previous strong performance [3][4] - The stock, which had nearly tripled in value, ultimately became a 14-bagger, demonstrating the importance of long-term thinking and trust in management [4][6] - Key lessons learned include avoiding short-term thinking, trusting founder-led management, and not betting against innovation [6][7] Group 2: TransMedics Group Analysis - TransMedics Group, a provider of Organ Care Systems, was purchased at the beginning of 2023 and initially saw gains before a significant drop in share price following an acquisition announcement [9][10] - Despite initial concerns about the acquisition of Summit Aviation impacting margins, the company’s stock has since tripled from its lows, with sales more than doubling [12][14] - Recent financial performance includes a 32% increase in transplant revenue and a 35% rise in logistics revenue, with a net profit margin of 17% [16] - TransMedics aims to expand its transplant operations significantly and enter new markets, which could provide substantial growth opportunities [16][17]