Turkey's Borsa Istanbul down at close
BIST 100 index drops nearly 990 points from close of last week
By Gokhan Ergocun
Turkey's benchmark stock index fell 0.96 percent to close at 101,728.51 points on Monday.
Borsa Istanbul's BIST 100 index started the day at 102,866.81 points, down 986.50 points from last week's close of 102,715.01 points.
The benchmark index hovered between 101,728.51 and 103,131.15 points during Monday's trading.
The total market value of the BIST 100 by market close was around 664 billion Turkish liras ($126.2 billion), and the daily trading volume was 6.86 billion Turkish liras ($1.3 billion).
On the first transaction day of the week, 39 stocks on the index were on the rise, 53 were on the decline, and eight were flat compared to the previous close.
The top-listed companies by market value were Turkish conglomerate Koc Holding ($8.3 billion), private lender Garanti ($6.82 billion), and petrochemical company Tupras ($6.81 billion)
The highest trading volumes were posted by Garanti, national flag carrier Turkish Airlines, and iron/steel company Kardemir.
Shares of energy company Aksa were the top gainers -- up 5.13 percent -- and Ipek Dogal Enerji, another energy firm, dropped the most, losing 9.11 percent.
The U.S. dollar/Turkish lira exchange rate climbed to 5.3030 at close, up from Friday's close of 5.2720.
The euro/lira rate also rose to 6.0080 at Monday's close, versus 5.9380 at last week's close.
One British pound traded for 6.8560 Turkish liras, while the GBP/TRY rate was 6.7550 at close on Friday.
The price of Brent oil was around $66.50 per barrel as of 6 p.m. local time (1500GMT) on Monday.