Mexico makes oil hedge data a state secret to thwart speculators

LONDON (Bloomberg) - Mexico has made key data on its sovereign oil hedge a state secret to shield the information from speculators and prevent cost increases, according to official documents seen by Bloomberg.

The move reduces transparency into the workings of the program, which is the largest oil transaction on Wall Street and often moves the market. The Mexican Finance Ministry will keep the data secret for five years, it told the government’s auditing body in a February 2019 letter.

While the ministry and the central bank have revealed detailed information on the program in previous years, the government this year has provided only the approximate annual cost: $1 billion. Disclosing more would raise the value of premiums paid for the hedge, Deputy Finance Minister Gabriel Yorio told reporters in Mexico City Thursday.

“Several institutions outside the hedge could use the information to speculate, buying the same financial instruments ahead of the government, increasing considerably their price,” the central bank said in a March 2018 resolution.

Mexico’s finance ministry declined to comment on its policy beyond what was said on Thursday. The central bank had no immediate comment.

The central bank argued that Mexico has in prior years paid more after media reports about the hedging program. “The volatility in WTI and Brent increased, generating also an increase in the price offered by the counterparts to the Banco de Mexico to cover its operations,” it said, referring to the two main oil-price benchmarks.

As part of the oil hedge, Mexico buys put options -- contracts that give it the right to sell at a predetermined price -- with banks including Goldman Sachs Group Inc. and energy companies like Royal Dutch Shell Plc.

The deal typically involves between 200 million barrels and 435 million barrels of crude, with a value as high as $20 billion.

Earlier this month, the government said it had insured the budget against crude prices dropping below $49 a barrel.

Mexico has historically disclosed the strike price of the put options and the actual cost of the deal, which runs from Dec. 1 to Nov. 30. Until last year, it reported the number of barrels hedged too.

The government used to reveal its lock-in price via the hedge as well as how many extra dollars per barrel it would cover through the Oil Revenues Stabilization Fund, known as FEIP.

In 2017, for example, Mexico hedged at $38 a barrel, and insured another $4 a barrel with the FEIP cash reserves, equal to the $42 level used to write the budget that year.

Additionally, it released even more granular detail over time when the body that audits the government reviewed the program, including when Mexico started and finished buying the options, the name of the banks it dealt with, and each bank’s share in the deal.