A Cost Basis Analyst typically reviews and reconciles financial transactions to determine correct cost basis for securities, ensuring compliance with tax regulations and internal policies. Daily tasks often include analyzing large datasets, correcting discrepancies, processing corporate actions, and collaborating with operations, accounting, and client service teams. You may also assist with client inquiries, prepare detailed reports, and support audit or regulatory processes. This role requires strong attention to detail, as accuracy is vital in maintaining clients' trust and regulatory adherence.