The first reaction of the stock exchange to the cessation of negotiations / drop of several thousand units at the beginning of trading

According to Tejarat News, the stock market began to decline in the last week of 1401, falling by 10,000 units in the first half hour.
The total index of Tehran Stock Exchange, which ended its work at the level of one million and 347 thousand units at the end of last week, entered a downward trend today and suffered a 0.7% decline.
Experts forecast market growth for this week, with some even predicting that the overall index will reach 1.4 million. But it seems to be the most important news for Vienna talks The fall affected the forecasts.
At the end of last week, the EU foreign policy chief announced the suspension of the Vienna talks, citing foreign factors as the reason for the halt in Vienna. Many experts attribute external factors to Russia’s recent demand.
However, it is said that the announced interruption in the negotiations will take place at the suggestion of the BJP coordinator. The parties intend to continue the process after this break. But there are still concerns about not reaching an agreement.
In the days when the positive news of the Vienna talks was published, the capital market had an upward or at least slightly volatile trend. The drop in the index after about a week of uptrend indicates the impact of the news of the halt in the Vienna talks.