This document discusses world commodity prices and markets. It begins by defining commodities and outlining the main features of commodity markets, including that demand is generally stable but supply can be volatile. This leads to price volatility and a long-term downward trend in prices. The document then examines policies for stabilizing commodity markets, including international commodity agreements and supply controls by producer cartels. However, such interventions face challenges in reconciling the interests of commodity producers and consumers. In conclusion, commodities are important but commodity markets have issues of price volatility and long-term price declines that various policies have aimed to address.
2. Question: what links Chinese economic policy
with a crime committed in Sinfin in June?
http://news.bbc.co.uk/1/hi/england/derbyshire/5011174.stm
Answer: the price of copper. Why?
China is growing rapidly and demanding
commodities such as copper, thus prices have
risen sharply
Criminals see prices rising and try to “supply”
some from a community centre!
4. Source: COMTRADE.
Figure 2
China's primary imports from world and from Africa, by major commodity group,
average annual rate of growth, 1994–2003
per cent
0
10
20
30
40
50
60
Total primary
commodities
Food Agricultural raw
materials
Fuels Ores and Metals
World Africa
5. Outline
1. Commodities defined
2. The main features of commodity markets
3. Price behaviour
4. Policies for commodity markets
5. Conclusions/questions
6. 1. Commodities Defined
“A commodity is something that hurts
when you drop it on your big toe, or smells
bad if you leave it out in the sun too long”
(Barron’s 27th
June 1983)
Primary commodities are “natural” and have
not been processed into other products
What types of internationally traded primary
commodities are there?
7. Food/Beverages
Coffee, cocoa, sugar, wheat, maize, rice,
bananas, beef
Minerals and Metals
Tin, copper, zinc, nickel, iron ore, aluminium
Agricultural Raw Materials
Rubber, cotton, tobacco, oilseeds, soybeans,
oils (palm, groundnut)
Fuels
Oil, gas and coal
8. 2. What are the Main Features
of Commodity Markets?
Major share of world trade
•23% including fuels
•14% excluding fuels
•Many countries export & import (see Table 1)
•Most DMEs net importers (except Australia
and Canada)
9. Demand – generally stable
•Necessities (e.g. food)
Low degree of substitution
Low income elasticity for food
•Inputs into manufacturing production:
Copper in construction or palladium
for mobile phones
Some substitution (e.g. rubber)
10. Supply – can be volatile
•Not just developing countries (see Table 2)
•Time period for supply means short run is a
long time and elasticity low e.g.:
Minerals need new mines
Coffee bushes need 7 years to mature
•Effect of shocks
Permanent - new processes
Temporary - weather
http://business.timesonline.co.uk/article/0,,9065-2236557.html
11. Graph 1: Commodity Market with Supply Shock
Price
Quantity
S1
D
S2
P2
P1
Q1Q2
S3
P3
Q3
12. Graph 2: Commodity Market with a Demand Shift
Price
Quantity
S
P1
Q1
D1
D2
P2
Q2
13. 3. Price Behaviour
Commodity prices exhibit two main features:
1. A high degree of volatility (see Table 3)
arising mostly from supply volatility
2. Downward trend relative to manufactured
goods
17. Figure 6: Real Commodity Prices 1980-2000 (Deflated by US Price Index)
140
160
180
200
220
240
260
280
300
1980Q41981Q31982Q21983Q11983Q41984Q31985Q21986Q11986Q41987Q31988Q21989Q11989Q41990Q31991Q21992Q11992Q41993Q31994Q21995Q11995Q41996Q31997Q21998Q11998Q41999Q32000Q22001Q12001Q4
18. Do these features represent a problem?
Volatility
•Input price volatility
Labour and capital costs known, other
inputs not – what happens?
Who pays for this? Inflation effects?
•Selling price volatility
Producer income unknown
Investment difficulties
19. Downward Trend
•LDC producers rely on export revenues
•Need manufactured goods for growth
•Try to produce more to increase revenues:
Y = PQ
Increase Q to offset fall in P but this
causes P to fall!
•Problem of dependence on a few
commodities for export earnings (see Table 4)
20. 4. Policies for Commodity
Markets
What do countries want?
•DMEs want good supplies but with stable
and “fair” (low??) prices
•LDCs want increased export earnings but
want them to be stable (high prices??)
How can these be reconciled?
By “managing” the market
21. International Commodity Agreements
•Buyers and sellers control supply to keep
prices in a stable range
•Supply controlled by production limits,
export quotas, buffer stocks etc
22. Graph 3: Price Bands in a Commodity Market
Price
Quantity
S
D
Pu
Pe
Qe
PL
23. International Commodity Agreements
•Buyers and sellers control supply to keep
prices in a stable range
•Supply controlled by production limits, export
quotas, buffer stocks etc
•Existed for a number of commodities: sugar,
coffee, cocoa, rubber, tin
•All collapsed due to disagreements between
the two sides
24. One-sided interventions
•Supply control by producers (cartels)
e.g. OPEC
Controls supply by quotas and can
increase prices (see 1973/4 on Figure 1)
•Protection of domestic producers
e.g. Common Agricultural Policy
Use tariffs and artificial prices to raise
incomes for EU farmers
Impact on world markets significant
25. Other Policy Issues in Commodity Markets
•Development and growth concerns
•Diversification of production in LDCs
•Inflation in DMEs
•Environmental concerns
•Technological change and its effects
•Market power and prices
•Risk management
26. 5. Conclusions/Questions
• Commodities are important for both LDCs
and DMEs
• Commodity markets have stable demand but
potentially volatile supply
• Prices can be volatile in short run and
downward trending in the long run
• Intervention can affect prices but what are
the welfare implications of such policies?