The STI has a history dating back to its founding in 1966.[1] Following a major sectoral re-classification of listed companies by the Singapore Exchange, which saw the removal of the "industrials" category, the STI replaced the previous Straits Times Industrials Index (abbreviation: STII) and began trading on 31 August 1998 at 885.26 points, in continuation of where the STII left off. At the time, it represented 78% of the average daily traded value over a 12-month period and 61.2% of total market capitalisation on the exchange.[3]
The STI was constructed by SPH, the Singapore Exchange and SPH's consultant, Professor Tse Yiu Kuen from the Singapore Management University (formerly from the National University of Singapore). It came under formal review at least once annually and was also reviewed on an ad hoc basis when necessary.[3] One such review, for instance, raised the number of stocks from 45 to 50, which took effect when trading resumed on 18 March 2005. This change reduced the index representation of the average daily traded value to 60%, while increasing its total market capitalisation to 75%.[citation needed]
Revamp
The STI was again revamped and relaunched on 10 January 2008. As part of a new partnership between SPH, SGX and FTSE, the number of constituent stocks was reduced from about 50 to 30 and the index was re-calculated using FTSE's methodology.[4][5] Besides the STI, the partners also developed a family of indices including the FTSE ST Dividend Index, FTSE ST China Top tradable index, FTSE ST Catalist Index and FTSE ST Maritime Index as well as 19 Supersector and 39 Sector indices. For the purposes of computing the indices, stocks are classified using the Industry Classification Benchmark (ICB).
The creation of the FTSE ST Index Series was intended to facilitate the creation of financial products such as institutional and retail funds, exchange-traded funds (ETFs), derivatives contracts and other index-linked products.[6] There are currently two ETFs listed on the SGX that track the STI: the SPDR Straits Times Index ETF (formerly known as the streetTRACKS Straits Times Index Fund) (managed by State Street Global Advisors) and the Nikko AM's Singapore STI ETF.
Record values
Category
All-Time Highs
Closing
3,934.04
Wednesday, 19 February 2025
Intraday
3,951.64
Monday, 24 February 2025
Annual Returns
The following table shows the annual development of the Straits Times Index, which was calculated back to 1970.[7][8][9]
Year
Closing level
Change in index
In points
In%
1970
139.06
1971
198.69
59.63
42.88
1972
432.73
234.04
117.79
1973
265.57
−167.16
−38.63
1974
150.82
−114.75
−43.21
1975
236.76
85.94
56.98
1976
254.81
18.05
7.62
1977
264.24
9.43
3.70
1978
349.16
84.92
32.14
1979
435.41
86.25
24.70
1980
660.82
225.41
51.77
1981
780.78
119.96
18.15
1982
732.32
−48.46
−6.21
1983
1,002.03
269.71
36.83
1984
812.61
−189.42
−18.90
1985
620.04
−192.57
−23.70
1986
891.30
271.26
43.75
1987
823.58
−67.72
−7.60
1988
1,038.62
215.04
26.11
1989
1,481.33
442.71
42.62
1990
1,154.48
−326.85
−22.06
1991
1,490.70
336.22
29.12
1992
1,524.40
33.70
2.26
1993
2,425.68
901.28
59.12
1994
2,239.56
−186.12
−7.67
1995
2,266.54
26.98
1.20
1996
2,216.79
−49.75
−2.19
1997
1,529.84
−686.95
−30.99
1998
1,392.73
−137.11
−8.96
1999
2,479.58
1,086.85
78.04
2000
1,926.83
−552.75
−22.29
2001
1,623.60
−303.23
−15.74
2002
1,341.03
−282.57
−17.40
2003
1,764.52
423.49
31.58
2004
2,066.14
301.62
17.09
2005
2,347.34
281.20
13.61
2006
2,985.83
638.49
27.20
2007
3,482.30
496.47
16.63
2008
1,761.56
−1,720.74
−49.41
2009
2,897.62
1,136.06
64.49
2010
3,190.04
292.42
10.09
2011
2,646.35
−543.69
−17.04
2012
3,167.08
520.73
19.68
2013
3,167.43
0.35
0.01
2014
3,365.15
197.72
6.24
2015
2,882.73
−482.42
−14.34
2016
2,880.76
−1.97
−0.07
2017
3,402.92
522.16
18.13
2018
3,068.76
−334.16
−9.82
2019
3,222.83
154.07
5.02
2020
2,843.81
−379.02
−11.76
2021
3,123.68
279.87
9.84
2022
3,251.33
127.65
4.09
2023
3,240.27
−11.06
−0.34
2024
3,787.60
547.33
16.89
Constituents
The 30 constituents of the STI as of 3 January 2022[Out of date] are:
A detailed list of the STI index components with description of each company, logo and link to its website can be found on ASEAN UP Top 30 companies from Singapore’s STI
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