UPDATE -Turkey's Borsa Istanbul Up 0.39% At Close

Turkey's benchmark stock index closed the day at 109,536.92 points on Thursday, up 0.39% from the previous close.

Borsa Istanbul's BIST 100 index started the day at 109,383.75 points. As of the daily close, it earned 425.58 points from the midweek's close of 109,111.34 points.

During the day, the index's lowest level was 108,779.39 points, while the highest was 109,853.13 points.

The total market value of the BIST 100 was around 783.8 billion Turkish liras ($116.4 billion) by market close, with a daily trading volume of 15.2 billion Turkish liras ($2.2 billion).

On the fourth transaction day of the week, 41 stocks on the index rose, 55 were down, and four were flat compared to Wednesday.

The highest trading volumes were posted by national flag carrier Turkish Airlines, defense giant Aselsan, and chemical producer Petkim.

Cement producer Akcansa was the best performer, with its shares up 10%, while medicine firm Deva dropped the most, losing 5.56%.

Meanwhile, Borsa Istanbul warned investors against manipulators by saying that share markets are not places to invest with tips or gossips.

People paying attention to basic analysis and consulting experts will earn, it added.

The price of one ounce of gold was $1,714 by market close, up from $1,709.50 at the previous close, according to data from Borsa Istanbul's Precious Metals and Diamond Markets.

The price of Brent crude oil was around $39.50 per barrel as of 6 p.m. (1500GMT) on Thursday.