These are the list of top contributors to modern Finance.
Franco Modigliani - Capital Structure
Franco Modigliani and Merton Miller are the biggest contributors to modern capital structure. They published The Modigliani-Miller irrelevance theorem in 1958, and in 1961 dividend theorem and in 1963 new version of capital structure theory with tax.
Merton Miller - Capital Structure
Merton Miller worked with Franco Modigliani and together published Modigliani and Miller 1958 Irrelevance theorem , Modigliani and Miller 1961 Dividend Policy theorem and Modigliani and Miller 1963 Cost of Capital.
William Forsyth Sharpe - Capital Asset Pricing Model
As a finance student you must definitly know what is Capital Asset Pricing Model or another words CAPM. William Forsyth Sharpe is the inventor or founder of CAPM.
Stephen Ross - Arbitrage Pricing Theory
The Arbitrage Pricing Theory (APT) was first originated from Stephen Ross in 1976, APT is widely taught in Finance and it is among the most important theories in modern finance.
Eugene Fama - Efficient Market Hypothesis
Eugene Fama is considered as the father of finance and he is well know for Efficient Market Hypothesis (EMH). He is also best know for modern portfolio theory.