The Monetary and Banking Research Institute (MBRI) says the output of manufacturing companies in the stock market has increased.
In its latest report it reflected on the monthly performance of 280 companies in the Tehran Stock Exchange and Iran Fara Bourse, the junior equities exchange.
Overall industrial production index (IPI) in the seventh calendar month to January 22 was up 7.7% compared to the corresponding month last year.
The companies account for almost half the industrial production in Iran and their performance is seen as a gauge to track domestic manufacturing trends, the MBRI said on its website.