Below, we guide you through the five primary Greeks—delta, gamma, theta, vega, and rho—explaining what each tells you, how they interact, and why they matter when you're trading options.

Delta Sigma Theta Sorority, Incorporated, has been a pillar of sisterhood, scholarship, service, and social action since its founding on January 13, 1913, by 22 collegiate women at Howard University.

Delta Sigma Theta Sorority, Inc. was founded on January 13, 1913, by 22 young women on the Howard University campus in Washington, D.C. The sorority has a remarkable legacy of promoting excellence ...