Alumina Aluminium oxide, also called alumina, is the raw material required to produce primary aluminium. It is a white powder  produced by the  refining of bauxite. 
  
  Backwardation Situation where early periods in a price  curve are valued at a premium to later periods.  This can be a result of short supply or a peak in demand in the short term. 
 
  Basis risk The risk that the value of a derivatives-based hedge  will not move in line with its underlying exposure. 
 
  Bauxite The main raw material for aluminium metal production. Bauxite deposits are mainly found in a wide belt around the equator. 
 
  Benchmark (crude) A crude oil specification that serves as a reference price for buyers and  sellers. There are three primary  benchmarks, West Texas Intermediate (WTI),  Brent Blend, and Dubai Crude. 
 
  Benchmark  (metals) A benchmark is a measurement of the price  per unit of quantity of the underlying commodity 
  traded in the international marketplace. It is set periodically by the country or through negotiation between the major producer and consumer  organisations 
  that consistently sell or buy large quantities of the commodity  in a marketplace, and is used to serve as a point of reference against  which sectors can be evaluated. 
 
  Bid / offer A market maker quotes a two-way price for a commodity with the bid price lower than the offer price. Customers can sell to the market maker  at his bid price and buy from him at his                  offer price. 
Bill of lading (BL) A document issued by the master of a ship when loading is completed. This acts as receipt for the goods, document of title to the goods and evidence of the contract of carriage. The rightful receiver of the cargo presents the BL to claim it at the discharge port.
 
  Blister copper An impure form of copper produced in a furnace. 
 
  Bunkers The fuel used by ships. The term for fuelling a ship is bunkering. 
  Call option A call option gives its owner the right but not the obligation to buy a specific quantity of a given commodity  at a defined price up until a certain point in time, in return for a premium. 
 
  Charter party (CP) A signatory in a contract to charter a vessel between the vessel  owner and the charterer. 
  
  Charterer A company that hires a ship and its crew for a single voyage or for a fixed period. 
 
  Collateral Security pledged in exchange for a loan. 
 
  Concentrate The tradable  commodity created by initial processing of lead, zinc or copper ore.  Concentrates are used  as raw materials by smelters to produce refined metals. 
 
  Condensate An ultralight oil found in huge quantities in shale deposits.  When underground it is mostly in gaseous form. It condenses into a liquid when pumped to the surface. 
 
  Contango A market environment where early periods  in a price curve are valued at a discount to later periods. It can be the result of over-supply or lack of demand in the present.  This is normally a temporary phenomenon. 
 
  Copper cathode A 99 percent pure form of copper – the primary raw material for copper  wire and cable. 
  Counterparty The opposite party in a contract or financial transaction. 
Deadweight tonnage (DWT) The cargo-carrying capacity of a vessel, in metric tonnes, plus the weight of bunkers, stores, lubes, fresh water, etc. It does not include the weight of the ship.
 
    Demurrage The compensation paid by charterers to the owners of a vessel for extra time used at the port, beyond what has been granted under the charter. 
    Exposure The portion of a trader’s position that is subject  to the risk of price movement. 
products, especially gasoline,  that exceed a required specification. 
    Hedge A position taken to counteract an exposed position intended to minimise or remove price risk. This is usually achieved using futures  contracts and other derivatives. 
    
    Initial margin The per contract financial guarantee required by a clearing house  to be able to trade on its exchange. 
    
    Mark-to-market An accounting mechanism that revalues trading positions against current market prices. Profits and losses are realised at each revaluation. 
 
    Middle distillates The range of refined products situated between lighter fractions, such  as gasoline, and heavier products, such as fuel oil. They include  jet fuel,  kerosene and diesel.                                
Multimodal Infrastructure that provides alternative transportation modalities for commodities, e.g. road, rail and river.
A flammable liquid made 
    
    Flat position Having no outright position 
    – either because nothing is held or because long and short positions net off. 
 
    Flat price risk Exposure to a change in absolute prices in a particular market. 
 
    Futures Contracts for commodities to be delivered in the future.  The product,  quality, delivery and quantity is specified. These are traded  on exchanges and there is no 
    counterparty-based credit risk. The only variable is price. Contracts are marked to market  daily. 
    Geographic spread The price differential between commodities with the same quality and grade characteristics deliverable on the same date but at different locations. 
    Laytime The  amount of time in port granted by the owners of the vessel,  as stated in the charter party,  for the loading and discharging of cargo. 
 
    Letter of credit (LC) A document from a bank guaranteeing that the seller will receive payment in full, as long as certain delivery conditions have been met. 
 
    Letter of indemnity (LOI) A guarantee that losses will not be suffered should certain provisions  of a contract not be met. If a BL is not 
    available, then a letter of indemnity is submitted to the owners for the delivery of the goods instead. 
 
    Long position The net position of a trader holding / owning a commodity in the  market. 
    from distilling petroleum. It is used as a diluent to help move heavy oil through pipelines and as a solvent. 
    Offtake agreement A long-term  supply agreement where  a trader agrees to buy a fixed quantity  or proportion of a resource producer’s future  output at a specified price. 
 
    Optionality A strategy that may have limited short-term benefits, but confers considerable longer-term value by extending choice and  improving contingent outcomes. 
 
    Over-the-counter (OTC) A security  or financial transaction conducted away from a formal,  centralised exchange. 
 
    Posted pricing A posted price  is set by  a government or national company where the price is set for a fixed period of time and only reviewed by that price- setting body. 
 
    Premium / discount (metals) Applied to benchmarks, being the addition or 
    Splitter A restricted refining process that splits  condensate into various products, including naphtha and distillates. 
 
    Spot price The current  market price at which a commodity  is bought or sold for immediate payment and delivery. 
    Vertical integration The combination in one company of two or more stages of the supply chain that would normally be operated by separate, specialist firms. 
 
    Viscosity Oil's resistance to flow. Higher viscosity  crude oil is much more difficult to pump from the ground, transport and refine. 
subtraction in price over or under a
reference price negotiated between physical trading partners for a specific product, delivery location and date.
 
  Put option A contract providing the owner with the right but not the obligation to sell a volume of a given commodity  at a certain price up until a certain point in time, in return for a premium. 
  Quality spread The difference in price between different grades  of a commodity deliverable on the same date at the same location. The higher grade commodity will normally trade  at a premium. 
A contract that operates like a secured loan. The seller of a security simultaneously agrees  to repurchase it from the buyer on a specified future date at an agreed price. 
  
  Short position The net position of a trader owing a commodity in the market,  often associated with futures markets. They have undertaken to sell a commodity and will need to buy back or cover that position by the delivery date. 
Time charter Hiring a vessel for a fixed period. The owner manages the vessel but the charterer specifies journeys, fuel, port charges, etc.
 
  Time spread The difference in price between a commodity delivered on a particular date and the identical commodity deliverable on a different date. Also known  as calendar spread. 
 
  Treatment charge (TC) and Refining charge (RC) (concentrates) TC / RC  are amounts designed to cover the cost incurred by the smelter during  the smelting and refining process,  whereby the treatment  costs occur during the smelting process  to extract metal  from the ore and the refining costs occur during further purification to pure metal where all  undesirable by products are removed. They  are negotiated fees that may be linked to metal prices  as well as market supply and demand, and in the concentrates business usually paid by the seller  to the buyer. 
  Variation margin Futures contracts are marked-to-market at the end of each trading session. Variation margin refers to the top-up payment  required of those holding loss-making positions before the start of each trading session. 
  evaporation occurs. More volatile oils have better burning properties, particularly  in cold climates, but they also require more active temperature regulation and  sealing procedures to protect the environment and minimise oil losses. 
  
  Volatility (price) The degree of variation in a trading price series over time as measured by standard  deviation. 
 
  Voyage charter Hiring a vessel for a specific voyage between  a load port and a discharge port. The charterer pays the vessel owner on a per-tonne or 
  lump-sum basis. The owner pays port costs, excluding loading and unloading, as well as fuel and crew costs. 
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