Cencora purchases pharmaceuticals from manufacturers on extended payment terms, often 30 to 45 days, while simultaneously collecting payments from retail pharmacies and hospitals on much shorter terms, typically 10 to 15 days. For the first two decades of its existence, the organization operated as a traditional wholesale distributor, engaging in brutal price wars with McKesson and Cardinal Health to secure exclusive supply contracts with massive retail chains like CVS and Walgreens. This margin structure is vastly inferior to the 40-60% margins typical of pharmaceutical manufacturers, but it is offset by a highly favorable negative working capital cycle. The revenue streams are segmented into three primary operational pillars. The commercial infrastructure required to support this model is highly specialized. Cencora employs a massive sales and operations workforce that engages directly with pharmaceutical manufacturers, hospital procurement officers, and retail pharmacy chains, providing complex supply chain analytics, inventory management solutions, and regulatory compliance support rather than simple product delivery. Surprisingly, unlike small molecule pills that can be manufactured in massive batches and stored in ambient warehouses for years, cell and gene therapies require a highly complex, temperature-controlled cold chain that involves the continuous monitoring of product integrity from the manufacturing facility to the patient's bedside. In the specialty pharmacy space, the competitive pattern are far more complex. Companies like Icon plc in clinical trials and Catalent in manufacturing operate with lower overhead and higher R&D efficiency, allowing them to bring novel commercialization services to market faster than a diversified giant like Cencora. This low gross margin is characteristic of the pharmaceutical wholesale distribution industry and reflects the intense competitive pressure from McKesson and Cardinal Health, and the consolidated buying power of retail giants like CVS Health and Walgreens Boots Alliance. The merger of CVS Health and Aetna, and the subsequent acquisition of Oak Street Health, has created a vertically integrated healthcare giant that possesses immense negotiating use over pharmaceutical distributors. Similarly, the combination of Walgreens Boots Alliance and its internal sourcing capabilities has reduced the number of independent retail pharmacies, forcing Cencora to compete fiercely for a shrinking pool of high-volume distribution contracts. In the specialty pharmacy space, Cencora faces relentless competition from vertically integrated PBMs like CVS Caremark, Express Scripts, and OptumRx, who have built massive internal specialty pharmacy networks that capture the highest-margin segments of the drug supply chain. In 1997, Amerisource Health merged with Bergen Brunswig, a larger, older distributor based in California, to form Amerisource Bergen, creating the second-largest pharmaceutical distributor in the United States.