Teaching

Fall 2026

BUECB6200 Managerial Economics

Instructors: Nachum Sicherman, Laura Doval, Paola Valenti, Thomas Prusa.

TA: Ritsu Kitagawa (ritsu.kitagawa@columbia.edu); Ram Smaran Suresh Kumar (rs4114@columbia.edu). 

TA Review Sessions: Fridays 10:45 am– 12:15pm, Geffen Hall 390.

TA Office hours: 9:00-10:00am, Kravis Hall 590-3.

Summer 2026

UN3265 Money and Banking

Instructor: Ritsu Kitagawa (ritsu.kitagawa@columbia.edu).

Office hours: By appointment.

Course website: https://ritsuecon.github.io/money-and-banking/

Spring 2026

BUECB6200 Managerial Economics

Instructors: Nachum Sicherman, Viola Corradini.

TA: Ritsu Kitagawa (ritsu.kitagawa@columbia.edu). 

TA Review Sessions: Fridays 4:00 – 5:30pm, Geffen Hall 390.

TA Office hours: 2:30-3:30pm, Kravis Hall 590-3.

BUECB8315 Game Theory and Business

Instructor: Alessandro Citanna.

TA: Ritsu Kitagawa (ritsu.kitagawa@columbia.edu). 

TA Review Sessions: Fridays 2:00 – 3:30pm, Kravis Hall 780.

TA Office hours: By appointment.

Fall 2025

BUECB6200 Managerial Economics

Instructors: Nachum Sicherman, Jonah Rockoff, Paola Valenti, Thomas Prusa.

TA: Ritsu Kitagawa (ritsu.kitagawa@columbia.edu); Sanhitha Jugulum (sanhitha.jugulum@columbia.edu). 

TA Review Sessions: Fridays 10:45 am– 12:15pm, Geffen Hall 390.

TA Office hours: 9:00-10:00am, Kravis Hall 590-3.