Changes In Adjusting Weight Ratios Of KRX 100, KOSTAR And KOSDAQ Premier Index

Title Changes in Adjusting Weight Ratios of KRX 100, KOSTAR and KOSDAQ Premier Index Adjusting weight ratios of following indices will be changed from June 11, 2010;

<KRX 100>
A005930 SamsungElec : (before)83.95% ? (after)78.61%

<KOSTAR>
A046890 SSC : (before)91.66%? (after)76.62%
A068270 Celltrion : (before)100.00% ? (after)90.20%

<KOSDAQ Premier>
All the Adjusting weight ratios of constituents in KOSDAQ Premier are 100.00%.

* Adjusting Weight ratio is derived from the constituent capitalization limit given to each index.
** Capitalization of a constituent = Number of Index Shares x Stock Price x Free Floating Ratio x Adjusting weight ratio

Please refer to the attachment for details. (KRX) File