High quality journals of Mathematical Finance, Economics and Insurance can be found below.
Advances in Applied Probability
 Europen Journal of Operational Research
Annals of Applied Probability
Annals of Probability
Annals of Operations Research
Applied Mathematical Finance
ASTIN Bulletin
Bernoulli
Communications on Stochastic Analysis
Electronic Communications in Probability
Electronic Journal of Probability
ESAIM: Probability and Statistics
European Actuarial Journal
Finance and Stochastics
Insurance: Mathematics and Economics
International Journal of Theoretical and Applied Finance
Journal of Applied Probability
Journal of Computational Finance
Journal of Theoretical Probability
Management Science
Mathematical Finance
Mathematical Methods of Operations Research
Mathematics and Financial Economics
Mathematics of Operations Research
Methodology and Computing in Applied Probability
North American Actuarial Journal
Probability Surveys
Probability Theory and Related Fields
Quantitative Finance
Scandinavian Actuarial Journal
SIAM Journal on Control and Optimization
SIAM Journal on Financial Mathematics
Statistics and Probability Letters
Stochastic Analysis and Applications
Stochastic Models
Stochastic Systems
Stochastic Processes and their Applications
Stochastics: An International Journal of Probability and Stochastic Processes