David Walter Banks for The New York Times  Aluminum ingots waiting to be shipped from a processor. Financial institutions like Goldman Sachs have used industry pricing regulations to earn millions of dollars each year.Â  MOUNT CLEMENS, Mich. â Hundreds of millions of times a day, thirsty Americans open a can of soda, beer or juice. And every time they do it, they pay a fraction of a penny more because of a shrewd maneuver by Goldman Sachs and other financial players that ultimately costs consumers billions of dollars.  One of Metro International's 27 warehouses near Detroit.  The story of how this works begins in 27 industrial warehouses in the Detroit area where a Goldman subsidiary stores customersâ aluminum. Each day, a fleet of trucks shuffles 1,500-pound bars of the metal among the warehouses. Two or three times a day, sometimes more, the drivers make the same circuits. They load in one warehouse. They unload in another. And then they do it again.  This industrial dance has been choreographed by Goldman to exploit pricing regulations set up by an overseas commodities exchange, an investigation by The New York Times has found. The back-and-forth lengthens the storage time. And that adds many millions a year to the coffers of Goldman, which owns the warehouses and charges rent to store the metal. It also increases prices paid by manufacturers and consumers across the country.  Tyler Clay, a forklift driver who worked at the Goldman warehouses until early this year, called the process âa merry-go-round of metal.â  Only a tenth of a cent or so of an aluminum canâs purchase price can be traced back to the strategy. But multiply that amount by the 90 billion aluminum cans consumed in the United States each year â and add the tons of aluminum used in things like cars, electronics and house siding â and the efforts by Goldman and other financial players has cost American consumers more than $5 billion over the last three years, say former industry executives, analysts and consultants.  The inflated aluminum pricing is just one way that Wall Street is flexing its financial muscle and capitalizing on loosened federal regulations to sway a variety of commodities markets, according to financial records, regulatory documents and interviews with people involved in the activities.  The maneuvering in markets for oil, wheat, cotton, coffee and more have brought billions in profits to investment banks like Goldman, JPMorgan Chase and Morgan Stanley, while forcing consumers to pay more every time they fill up a gas tank, flick on a light switch, open a beer or buy a cellphone. In the last year, federal authorities have accused three banks, including JPMorgan, of rigging electricity prices, and last week JPMorgan was trying to reach a settlement that could cost it $500 million.  Using special exemptions granted by the Federal Reserve Bank and relaxed regulations approved by Congress, the banks have bought huge swaths of infrastructure used to store commodities and deliver them to consumers â from pipelines and refineries in Oklahoma, Louisiana and Texas; to fleets of more than 100 double-hulled oil tankers at sea around the globe; to companies that control operations at major ports like Oakland, Calif., and Seattle.  In the case of aluminum, Goldman bought Metro International Trade Services, one of the countryâs biggest storers of the metal. More than a quarter of the supply of aluminum available on the market is kept in the companyâs Detroit-area warehouses.  Before Goldman bought Metro International three years ago, warehouse customers used to wait an average of six weeks for their purchases to be located, retrieved by forklift and delivered to factories. But now that Goldman owns the company, the wait has grown more than 20-fold â to more than 16 months, according to industry records.  Longer waits might be written off as an aggravation, but they also make aluminum more expensive nearly everywhere in the country because of the arcane formula used to determine the cost of the metal on the spot market. The delays are so acute that Coca-Cola and many other manufacturers avoid buying aluminum stored here. Nonetheless, they still pay the higher price.  Goldman Sachs says it complies with all industry standards, which are set by the London Metal Exchange, and there is no suggestion that these activities violate any laws or regulations. Metro International, which declined to comment for this article, in the past has attributed the delays to logistical problems, including a shortage of trucks and forklift drivers, and the administrative complications of tracking so much metal. But interviews with several current and former Metro employees, as well as someone with direct knowledge of the companyâs business plan, suggest the longer waiting times are part of the companyâs strategy and help Goldman increase its profits from the warehouses.  Gretchen Morgenson contributed reporting from New York. Alain DelaquÃ©riÃ¨re contributed research from New York.  This article has been revised to reflect the following correction:  A previous version of this article misstated one of the financial institutions that received approval to buy up to 80 percent of the copper available on the market. It is BlackRock, not the Blackstone Group.
Regulators have allowed banks to buy companies that trade in commodities, resulting in huge profits for the banks and higher prices for consumers.