Final answer:
Ralph Nelson Elliott is renowned as one of the titans of technical analysis, known for his development of the Elliott Wave Theory used in financial markets.
Step-by-step explanation:
One of the individuals often recognized as a titan of technical analysis is Ralph Nelson Elliott. He is famous for developing the Elliott Wave Theory, a form of technical analysis that investors and traders use to analyze financial market cycles and forecast market trends by identifying extremes in investor psychology, highs and lows in prices, and other collective factors. Elliott's profound contribution to technical analysis remains influential and is used by countless financial professionals around the world to inform their trading strategies.