Index-News

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Introduction

 

The HNX-Index (HASTC-Index previously) is calculated since the first day of official trading session of the market (14/7/2005) or the base day. This index shows the change in prices of all stocks traded on Hanoi Stock Exchange. The index is calculated by comparing the current market capitalization to the market capitalization of all listed stocks on the base day. The value assigned to the base day index is 100.

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Methodology

 

The computation follows the procedure below:

 

                                     Market capitalization at present

HNX-Index       =  -------------------------------------------------------------  x100

                                     Market capitalization on the base day

 

Or:

                                 ∑ Pit x Qit

HNX-Index   = --------------------- x 100

                                 ∑  Pio x Qit

 

Where:

Pit: Market value of stock i at present

Qit: number of listed shares of stock i at present

Pio: Market value of stock i on the base day

i: 1,……,n

During the trading session, HNX-Index will be calculated after any stock transaction is executed. Therefore, when the executed price of any transaction changes, the HNX-Index will change as well. The HNX-Index shows the change of prices during the whole trading session, which forms the online HNX index chart. The HNX-Index at the close is calculated basing on closing prices of stocks.

Example:

a. On the base day 14/7/2005 with the first trading session:

No.

Stock code

Closing price

Number of listed shares

Market value

01

CID

17,800

541,000

9,629,800,000

02

GHA

16,500

1,289,480

21,276,420,000

03

HSC

55,000

580,000

31,900,000,000

04

KHP

15,000

15,252,260

228,783,900,000

05

VSH

13,000

122,500,000

1,592,500,000,000

06

VTL

22,000

1,800,000

4,050,000,000

 

Total

 

 

1,924,590,120,000

                                    1,924,590,120,000

=> HNX-Index = ---------------------------------------- x 100 =100

                                    1,924,590,120,000

 

Market capitalization on base day  = 1,924,590,120,000

 

b. At the close of Day 2’s session on 18/7/2005:

No.

Stock code

Closing price

Number of listed shares

Market value

01

CID

16,000

541,000

8,656,000,000

02

GHA

18,200

1,289,480

23,468,536,000

03

HSC

53,600

580,000

31,088,000,000

04

KHP

14,500

15,252,260

221,157,770,000

05

VSH

13,000

122,500,000

1,592,500,000,000

06

VTL

21,000

1,800,000

37,800,000,000

 

Total

 

 

1,914,670,306,000

 

           1,914,670,306,000

=> HNX-Index =            ----------------------------------- x 100 =99.48

           1,924,590,120,000

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