Abstract
This paper undertakes tests for market efficiency of three UK financial futures contracts: FTSE100 futures (stock index futures), Long Gilt (bond futures), Short Sterling (interest rate futures) and also examines the impact of the introduction of electronic trading system on their market efficiency. The analysis is based on the notion of weak-form informational efficiency of the Efficient Market Hypothesis (EMH). For robustness, the study employs three test methods, ADF unit root test, KPSS test and Lo & MacKinlay Variance Ratio test, to investigate the randomness of the futures price fluctuation, which generally signifies market efficiency. Any evidence of market weak-form inefficiency implies that the futures prices do not follow a random walk process and the past price of the financial instrument can be used to forecast the futures price to obtain superior profit. The results show that the three markets under investigation are weak-form informational efficient. Before the introduction of electronic trading system, the UK bond futures market is relatively the most efficient among the three markets under investigation. After automation, the efficiency of FTSE100 futures contract improves to become the most efficient among the three markets under investigation.
Acknowledgements
The author would like to thank Dr Mike Buckle at the School of Business and Economics, University of Wales Swansea for his useful comments.
Notes
1 For example, S&P 500 futures returns by Goldenberg (Citation1988, Citation1989), Cheung and Ng (Citation1990), Fung
et al
. (Citation1994); interest rate futures returns by Neftci and Policano (Citation1990), Piccinato
et al
. (Citation1998), Lee and Mathur (Citation1999); spot equity returns by Hasbrouck and Ho (Citation1987), Stoll (Citation1989), Madhavan
et al
. (Citation1997), Lin
et al
. (Citation1999) and foreign exchange returns by Goodhart and Figliuoli (Citation1991), Goodhart and Guigale (Citation1993), Goodhart
et al
. (Citation1996), Low and Muthuswamy (Citation1996).
Goldenberg
,
DH
.
1988
.
Trading frictions and futures price movements
.
Journal of Financial and Quantitative Analysis
,
23
:
465
–
81
.
Goldenberg
,
DH
.
1989
.
Memory and equilibrium futures prices
.
Journal of Futures Markets
,
9
:
199
–
213
.
Cheung
,
YW
and
Ng
,
L
.
1990
.
The dynamics of S&P 500 Index and S&P 500 Futures Intraday Price Volatilities
.
Review of Futures Markets
,
9
:
458
–
86
.
Fung
,
HG
,
Lo
,
WC
and
Peterson
,
JE
.
1994
.
Examining the dependency in intra-day stock index futures
.
Journal of Futures Markets
,
14
:
405
–
19
.
Neftci
,
SN
and
Policano
,
AJ
.
1990
.
On some sample path properties of intra-day futures prices
.
Review of Economic and Statistics
,
72
:
529
–
36
.
Piccinato
,
B
,
Ballocchi
,
G
and
Dacorogna
,
M
.
1998
.
“
A closer look at the Eurofutures market
”
. In
intraday statistical analysis
,
Olsen & Associates
.
Working paper
Lee
,
CI
and
Mathur
,
I
.
1999
.
Efficiency tests in the Spanish futures markets
.
Journal of Futures Markets
,
19
:
59
–
77
.
Hasbrouck
,
J
and
Ho
,
T
.
1987
.
Order arrival, quote behaviour and the return generating process
.
Journal of Finance
,
42
:
1035
–
45
.
Stoll
,
HR
.
1989
.
Interring the component of the bid-ask spread: theory and empirical tests
.
Journal of Finance
,
44
:
115
–
34
.
Madhavan
,
A
,
Richardson
,
M
and
Roomans
,
M
.
1997
.
Why do security prices change? A transaction-level analysis of NYSE stocks
.
Review of Financial Studies
,
10
:
1035
–
64
.
Lin
,
SJ
,
Knight
,
J
and
Satchell
,
S
.
1999
.
“
Modelling intraday equity prices and volatility using information arrivals – a comparative study of difference choice of information proxies
”
. In
Financial Markets Tick by Tick
,
Edited by:
Lequeux
,
P
.
27
–
64
.
Chichester
:
John Wiley and Sons
.
Goodhart
,
C
and
Figliuoli
,
L
.
1991
.
Every minute counts in financial markets
.
Journal of International Money and Finance
,
10
:
23
–
52
.
Goodhart
,
CAE
and
Giugale
,
M
.
1993
.
From hour to hour in the foreign exchange market
.
The Manchester School
,
LXI
:
1
–
34
.
Goodhart
,
C
,
Ito
,
T
and
Payne
,
R
.
1996
.
“
One day in June 1993: A study of the working of the Reuters 2000–2 electronic foreign exchange trading system
”
. In
The Microstructure of Foreign Exchange Markets
,
Edited by:
Frankel
,
JA
,
Galli
,
G
and
Giovannini
,
A
.
107
–
79
.
Chicago,
, USA
:
University of Chicago Press
.
Low
,
AHW
and
Muthuswamy
,
J
.
1996
.
“
Information flows in high frequency exchange rates
”
. In
Forecasting Financial Markets: Exchange Rates, Interest Rates and Asset Management
,
Edited by:
Dunis
,
C
.
3
–
32
.
Chichester
:
John Wiley
.