Ethanol futures liquidity lagged the policy boom

A thin book after years of growth

By the 2007 source window, listed ethanol futures still showed thin standing interest relative to larger energy and grain contracts, even after several years of industry growth. Front-month open-interest snapshots in that window placed ethanol in the tens of contracts while corn, crude oil, and RBOB gasoline sat in the tens or hundreds of thousands.

Earlier ethanol listings from 2004 on energy and agricultural platforms failed to attract enough product, traders, and contracts to support a broad commercial and speculative audience. The 2005 CBOT ethanol listing produced some early activity but still lacked the participation typically associated with a rapidly expanding physical industry.

Open interest and the liquidity filter

Open interest analysis is a count of outstanding futures positions used to judge whether a contract has enough standing interest for entry and exit. A related grain contract with decades of price history and more than 1.5 million outstanding contracts offered immediate entry and exit that front-month ethanol, with fewer than 200 contracts, could not match.

A liquidity filter asks whether an order can be placed and offset at a tolerable cost given the book, spread, volume, and auction design. The thin ethanol book raised implementation cost: the extra cost of getting into and out of a position, including spread, slippage, and the risk of finding no offset.

Futures contract selection chooses among related listed contracts by comparing depth, participant mix, and how each market sits in a broader commodity complex. On those screens, the grain contract offered the standing interest that front-month ethanol did not.

Who sat on the other side

Most ethanol futures activity was commercially based, with few if any large speculative accounts present to add two-sided flow. A commercial trader is a participant whose futures activity is tied to producing, blending, or otherwise handling the underlying commodity. A noncommercial trader takes futures positions for speculation or investment rather than to source or hedge a physical product.

A designated electronic market maker was introduced in 2007 specifically to post continuous two-sided ethanol quotes and draw noncommercial participation.

Physical expansion and a still immature listing

The physical ethanol complex was expanding on policy and plant-count grounds, including a 2005 consumption target of 7.5 billion gallons by 2012 and more than 120 operating plants plus dozens more under construction.

The source argued that later commercial entry, developing price trends, and smaller more flexible contract sizes would be needed before speculative traders treated ethanol futures as a mature, executable market. A later biodiesel listing was expected to face similar early liquidity constraints, while overseas ethanol and biodiesel production raised the chance that both markets could eventually sit in a cross-border rather than purely domestic context.