commodity trading value chain - bauer college of business · • generating capacity constraints in...
TRANSCRIPT
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Commodity Trading Value Chain
Craig Pirrong
Bauer College of Business
University of Houston
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Commodity Transformations
• All commodities undergo transformations through the value chain
• Transformation in space (transportation)
• Transformation in time (storage)
• Transformation in form (processing)
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Some Examples
• Power plants transform fuel into power
• Pipelines transform gas in one location to gas in another
• Storage terminals convert oil today to oil tomorrow
• Refining oil into products
• Blending grain, oil or metals concentrates
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Complexity
• Most commodities go through numerous transformations of all 3 types
• Think of the process of transforming oil at the wellhead to gasoline at the pump
• Multiple spatial transformations (VLCC, pipeline, truck)
• Multiple physical transformations (at refinery)• Storage at “break points”
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Transformations are Costly
• Transformations are costly• Space: transportation costs• Time: Storage costs• Form: refining/processing costs
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Constraints and Bottlenecks
• Marginal transformation costs tend to be increasing, and sometimes non-linear
• Constraints (“bottlenecks”) in the transformation process can create these non-linearities
• As constraints become binding, transformation costs tend to rise steeply in the quantity of transformation undertaken
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Some Examples: Spatial Transformations
• Pipeline capacity
• Transmission capacity (e.g., thermal, voltage limits)
• Rail-loading capacity
• Port capacity
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Some Examples: Temporal Transformations
• Grain or oil storage capacity limits
• Limits on the rate of inflow to or outflow from natural gas storage facilities
• The impossibility of time travel: can take a commodity from the present to the future via storage, but can’t take the commodity from the future to the present
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Some Examples: Transformations in Form
• Generating capacity constraints in electricity
• Refining capacity constraints
• Blending
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Regulatory Bottlenecks
• Regulatory factors are an increasingly important source of bottlenecks.
• Gasoline formula regulations that vary by geographic region (e.g., Midwest)
• Renewable Fuel Mandates
• Export bans
• Rail safety regulations
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Pricing
• Understanding commodity pricing requires an understanding of the transformation process and the role of bottlenecks
• It also requires an understanding of the role of the price system
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The Role of the Price System
• A competitive price system aggregates the information held by millions of economic actors
• Competitive prices adjust to direct resources to their highest value uses
• In particular, they adjust to reflect relative scarcity and the importance of constraints/bottlenecks
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Spreads Price Bottlenecks
• Transmission/congestion charges price transmission bottlenecks (example: PJM)
• Price of NG transportation and storage prices pipeline and storage bottlenecks
• Crack spread
• Spark spread
• Basis
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Spreads Provide Signals on Resource Allocation
• Basis prices quality/locational value differences
• Locational basis will adjust to reflect changes in spatial supply and demand patterns and transportation constraints
• Example: CL basis. Basis relations in WTI (and between WTI and other crudes) have changed dramatically in recent years
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Constraints and Spreads
• Since constraints/bottlenecks affect the marginal cost of transformation, they will affect spreads
• Spreads widen as constraints become more binding
• Spreads are more volatile when constraints bind tightly than when they do not
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Binding Constraints and Spreads: Transformations in Space
• Natural gas basis widens and becomes more volatile when pipeline constraints bind
• Locational spreads in power markets are wide and volatile when transmission constraints bind
• Grain basis wide and volatile when rail system is congested
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Binding Constraints and Spreads: Transformations in Time
• Calendar spreads widen and become volatile when storage space is almost completely utilized (e.g., oil, wheat)
• Backwardations become extreme when inventories drawn down to very low levels (and hence the non-negativity constraint on inventory starts to bind)
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Binding Constraints and Spreads: Transformations in Form
• Refining margins (e.g., crack or crush spreads) wide and variable when refining capacity utilization rates are high
• Spark spreads (the margin between the value of power and the cost of fuel to generate it) wide and variable when generation capacity utilization is high
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COMMODITY TRADING
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Light-Heavy Differential Example
• At the height of the oil price spike in summer, 2008, light-heavy price differentials were very wide and inventories of heavy crude were accumulating (e.g., Iran storing heavy crude in VLCCs)
• Combination of regulation-induced demand (low sulfur diesel), restrictions on supply of light sweet crude due to Nigerian disruptions, and limitations on capacity to process heavier crudes to satisfy demand for low sulfur diesel caused the differential to blow out
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Trading
• Spreads and pricing relationships are the essence of much commodity trading
• Trading and managing the risk of such price exposures requires an understanding of the value chain
• There is a big potential payoff to understanding the intricacies of the value chain
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US Oil Markets: An Extended Example
• Major changes in North American oil markets in the past decades
• Major supply and demand shocks have affected pricing relationships
• Marginal barrel determines price: where the marginal barrel comes from depends on shifting supply and demand conditions
• Seasonal and secular shifts
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An Overview• 1990s-early 2000s: US Midcontinent became a deficit
supply region: marginal barrel was from imports. Oil flow mainly south-to-north. Midwest supplied from Canada
• 2008: Financial crisis led to a substantial decline in demand
• Post-2008: huge increases in output in Midcon, S. TX and W. TX.
• Complete shift in pricing relationships due to bottlenecks
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Midcon Infrastructure
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Midcon Infrastructure II
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Midcon Flows
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Cash Basis Relationships
• Midcon prices above prices at GOM by cost of transportation prior to shale boom
• Shale boom created huge bottlenecks: excess supply in Midcon and parts of TX, no way to get it to Gulf, and Midcon refineries operating at full capacity
• Pricing relationships flipped: Midcon at a huge discount to GOM until bottleneck alleviated by reversal of pipelines, addition of rail and barge capacity
• Now the bottlenecks is legal: GOM-Midcon=cost of transportation, but GOM at a discount to foreign crude due to export ban
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US Oil Output
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350000
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-200
5
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2005
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2006
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-200
6
Sep-
2006
Jan-
2007
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-200
7
Sep-
2007
Jan-
2008
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-200
8
Sep-
2008
Jan-
2009
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-200
9
Sep-
2009
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2010
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-201
0
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2010
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1
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2011
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2
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2013
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2014
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4
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PADD 2 Output
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8
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9
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3
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4
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5
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2015
PADD 2 Crude Production
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North Dakota Output
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6
Sep-
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-200
7
Sep-
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Jan-
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May
-200
8
Sep-
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9
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0
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1
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North Dakota Crude Production
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PADD 3 Output
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6
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-200
7
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-200
8
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-200
9
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0
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PADD 3 Crude Output
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Crude Price Differential
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004
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-200
7
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7
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-200
8
Jul-2
008
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-200
8
Jan-
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-200
9
Jul-2
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9
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$/bb
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PADD 3-PADD2 RAC Differential
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US Prices vs. Brent
-35
-30
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-15
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0
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Axi
s Ti
tle
PADD II and PADD III RAC Minus Brent
RAC2-Brent
RAC3-Brent
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WTI-Brent Futures Spreads
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ay-0
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ar-0
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ug-0
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n-05
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n-05
1-N
ov-0
5
1-A
pr-0
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1-Se
p-06
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b-07
1-Ju
l-07
1-D
ec-0
7
1-M
ay-0
8
1-O
ct-0
8
1-M
ar-0
9
1-A
ug-0
9
1-Ja
n-10
1-Ju
n-10
1-N
ov-1
0
1-A
pr-1
1
1-Se
p-11
1-Fe
b-12
1-Ju
l-12
1-D
ec-1
2
1-M
ay-1
3
1-O
ct-1
3
1-M
ar-1
4
1-A
ug-1
4
1-Ja
n-15
1-Ju
n-15
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ov-1
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1-A
pr-1
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CL-CB Spread (Nearby & 12 Month)
Nearby
12 Month
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WTI-Brent Spot Spread
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009
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0
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2, 2
010
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02,
201
0
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02, 2
011
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02,
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1
Jul 0
2, 2
011
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201
1
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02, 2
012
Apr
02,
201
2
Jul 0
2, 2
012
Oct
02,
201
2
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02, 2
013
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02,
201
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2, 2
013
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02,
201
3
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02, 2
014
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02,
201
4
Jul 0
2, 2
014
Oct
02,
201
4
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02, 2
015
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02,
201
5
Jul 0
2, 2
015
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02,
201
5
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02, 2
016
Apr
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6
Jul 0
2, 2
016
Oct
02,
201
6
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02, 2
017
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017
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7
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02, 2
018
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8
WTI-Brent
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Bottlenecks and Spread Volatility
-4
-2
0
2
4
6
8
WTI-Midland Spread Change
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Commodity Flows & New Infrastructure
• Dramatic reversal in direction of oil flows• Utilization of rail, barge and even truck to circumvent
bottlenecks• Displacement of imports, especially from Nigeria (shale
oil light and sweet)• Reversal of pipelines, construction of new pipelines• Increased product exports to circumvent ban on crude
exports, increased investment in refining capacity• Building of “splitters” (“mini-refineries”) to circumvent
ban on crude exports
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Crude Shipments
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7
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8
Jul-2
008
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-200
8
Jan-
2009
Apr
-200
9
Jul-2
009
Oct
-200
9
Jan-
2010
Apr
-201
0
Jul-2
010
Oct
-201
0
Jan-
2011
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-201
1
Jul-2
011
Oct
-201
1
Jan-
2012
Apr
-201
2
Jul-2
012
Oct
-201
2
Jan-
2013
Apr
-201
3
Jul-2
013
Oct
-201
3
Jan-
2014
Apr
-201
4
Jul-2
014
Oct
-201
4
Jan-
2015
Apr
-201
5
Jul-2
015
Oct
-201
5
PADD 3 to PADD 2 Crude Shipments
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Crude Shipments
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
Jan-
2008
Apr
-200
8
Jul-2
008
Oct
-200
8
Jan-
2009
Apr
-200
9
Jul-2
009
Oct
-200
9
Jan-
2010
Apr
-201
0
Jul-2
010
Oct
-201
0
Jan-
2011
Apr
-201
1
Jul-2
011
Oct
-201
1
Jan-
2012
Apr
-201
2
Jul-2
012
Oct
-201
2
Jan-
2013
Apr
-201
3
Jul-2
013
Oct
-201
3
Jan-
2014
Apr
-201
4
Jul-2
014
Oct
-201
4
Jan-
2015
Apr
-201
5
Jul-2
015
Oct
-201
5
PADD 2 to PADD 3 Crude Shipments
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Rail Shipments
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
May
-201
0
Jul-2
010
Sep-
2010
Nov
-201
0
Jan-
2011
Mar
-201
1
May
-201
1
Jul-2
011
Sep-
2011
Nov
-201
1
Jan-
2012
Mar
-201
2
May
-201
2
Jul-2
012
Sep-
2012
Nov
-201
2
Jan-
2013
Mar
-201
3
May
-201
3
Jul-2
013
Sep-
2013
Nov
-201
3
Jan-
2014
Mar
-201
4
May
-201
4
Jul-2
014
Sep-
2014
Nov
-201
4
Jan-
2015
Mar
-201
5
May
-201
5
Jul-2
015
Sep-
2015
Nov
-201
5
PADD 2 to PADD 3 Crude Oil by Rail
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The Bottlenecks are Back
-35
-30
-25
-20
-15
-10
-5
0
5
10
15
WTI Cushing v. WTI Midland, LLS & Canadian Select
Midland-WTI LLS-WTI Canada-WTI
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Contango Example
• Demand collapse in aftermath of financial crisis and inflexibility of supply response in the short run caused huge crude inventory builds, including in US Midcontinent, especially Cushing
• Storage space effectively constrained• Contango (the implicit price of storage) on WTI
blew out• Also blew out on WTS—so it was a storage capacity
issue, not a WTI/futures issue
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Supercontango
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CL Supply of Storage
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Market Responses
• Substantial increase in storage capacity at Cushing
• Using VLCCs to store oil
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Grains in the US
• In 2006-2008, spreads between the grain futures prices (and the prices of shipping certificates) and cash grain prices in the country (e.g., elevator bids) reached historically high levels
• This differential should reflect the cost of transforming stored grain to grain on a barge
• What is the bottleneck?
• Huge inventory build (driven in part by impending renewable fuel mandates)
• Anything else?
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RINs
• Renewable ID Numbers (“RINs”) provide an example of how a regulatory bottleneck can affect pricing
• Congress mandated increasing use of biofuels (e.g., ethanol) but decline in gasoline usage and technical limitations on the amount of ethanol standard engines can use (“the blend wall”) caused dramatic increase in the demand for unused certificates issued in prior years
• Huge price spike
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Hitting the (Blend-) Wall
0
0.5
1
1.5
2
2.5
RINS Prices
D6-1
D6-2
D4
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LNG: EVOLUTION OF A NEW TRADED MARKET
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LNG
• First cargoes of LNG shipped in 1964
• LNG liquefaction characterized by expensive investment, large scale
• In early stages of development, one plant’s capacity sufficient to satisfy uncontracted demand
• Lumpy additions to capacity
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Transactions Costs
• This situation creates two sided small numbers bargaining situations
• Buyers can hold up sellers and vice versa
• Long term contracts a way of mitigating holdup problems
• Use oil price linkage to reduce pricing disputes
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Contractual Specificity
• Feedback cycle
• Long term contracts tie up buyers and sellers, so when a new plant comes on-line, new plant and buyers are in a small numbers bargaining situation
• “Contractual specificity”
• So new plant enters into long term contracts, and the process is self-perpetuating
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Coordination Game
• There are enough buyers and sellers to break the small numbers bargaining situation
• But it is necessary to coordinate a movement from the long term contract equilibrium to the short term contracting equilibrium
• Coordination always hard to achieve, and existing contracts impede that coordination
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Breaking the Cycle
• Need to have multiple plants competing for multiple buyers
• Market developments have facilitated this
• Slower than anticipated demand growth
• Large amounts of capacity coming online (e.g., Australia, US)
• Excess supply: “free cargoes”
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Breaking the Cycle II
• Shocks created short term needs for LNG (Egypt gas decline, Amazonian drought)
• Japanese overbought and desire to escape contractual obligations: government is obliging by trying to eliminate “destination clauses”
• This has created additional short-term trading
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A New Cycle
• The liquidity cycle
• Liquidity builds liquidity
• In liquid markets buyers (sellers) can rely on markets for security of supply (demand)
• This breaks the small numbers bargaining problems
• If there is a liquid spot market, even big, long-lived assets don’t need long term contracts (e.g., refineries)
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An Experimental Space
• Blockchain has burst upon the scene, and interest has spread rapidly from the cryptocurrency space to virtually every industry
• Many elaborate claims about how blockchain will revolutionize everything from A to Z
• FOMO
• Now businesses are in the process of experimenting to develop practical applications
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Blockchain & Supply Chains
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Many Attempts, Many Failures
• GitHub (a software collaboration platform) data shows the extent of experimentation
• Since 2009, 86,034 BC projects, 9,375 by companies & research institutions
• 28,885 in 2016 alone—pace obviously accelerating
• Only 8 percent of projects started are currently active
• Average longevity 1.22 years
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Signs of a Burgeoning Industry
• These patterns (many attempts, many failures) are characteristic of a newly developing, rapidly evolving industry
• Indicative of a highly promising technology that is not fully understood, and perhaps over-hyped
• Much trial-and-error• Evolutionary explosion• Likely to be followed by a narrowing and deepening
evolutionary process
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Alternative Visions: Disintermediation
• Blockchain will disintermediate—that is it will render existing intermediaries like banks obsolete and superfluous: peer-to-peer supplants reliance on trusted third parties– Will probably depend on function, e.g., payments vs.
supplying credit
• This is a more radical vision, and there is room for considerable skepticism (more on this later)
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Alternative Visions: Improving the Efficiency of Intermediation
• Using blockchain to change the way existing firms/intermediaries perform their legacy functions
• Performing the same basic functions, but doing so more efficiently
• The most mature blockchain initiatives are of this type
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A Conceptual Framework
• The conceptual underpinnings of blockchain can help one understand its most immediately promising applications
• A secure, immutable ledger (database) that multiple parties can view and add to—a way of sharing information – Open/unpermissioned
– Closed/permissioned
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Supply Chain Within a Single Entity
• Tracking a product or part that moves through many processes/locations within a single firm
• Employees update the blockchain as product/part moves through the firm– Cargill (turkeys)
– Maersk (shipping containers)
• Better inventory and quality control
• Source of data to identify process bottlenecks
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Commodity Trade Involving Multiple Parties
• Commodity trades are complex, and involve many parties– Buyer, seller (and a given lot can change hands multiple
times), banks (usually two or more), transporters (often several, e.g., truck, rail, ship), inspectors, warehouses
• Information currently diffused, often on paper documents that can be lost or altered, and which are cumbersome to transfer
• Participants can document their actions by updating blockchain
• Experiments in oil, cotton, and grain trading
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Recording and Transferring Asset Ownership
• Record asset ownership on a blockchain
• Update ownership record when asset is sold
• Digitize assets
• Subdivide assets into fractional shares
• Digital gold (CME & Royal Mint)
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Smart Contracts
• Many transactions involve contingencies: if X happens, do Y– Simple: make a fixed payment on the 15th of every
month
– More complex: size of payment depends on a market price (a swap contract, variation margin)
• Smart contracts implemented on blockchain can automate this process
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Devilish Details
• Participation
• Permissioning: who can do what?
• Organization, ownership, control, and governance
• Scaling and network effects
• The ongoing experimentation is in large part focused on attempting to master these details in particular applications
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Trust and Disintermediation
• One of the hyped benefits of some BC applications (e.g., Bitcoin) is the elimination of need for trusted intermediaries
• No free lunch• These applications involve relatively simple forms of
opportunistic behavior (e.g., double spend)• Many commercial applications (e.g., commodities
trades) involve more varied and complex misbehaviors• This is why I believe most successful implementations of
BC will involve trusted intermediaries to operate more efficiently, rather than disintermediation
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Functional Analysis
• When evaluating BC applications, it is essential to ask:– What economic function is being performed?
– How does BC improve the efficiency of performing this function?
– Does BC permit a change in who performs the function?