According to Arthur Hayes, a significant price surge for risk assets such as Bitcoin hinges on the Federal Reserve revising a key policy, which he sees as the next major liquidity trigger. Until then, he is holding off on more aggressive investment strategies.

In an essay dated August 11, Hayes focuses on the standing Foreign and International Monetary Authorities (FIMA) Repo Facility. This mechanism permits approved foreign official accounts to temporarily obtain U.S. dollars by using U.S. Treasury securities as collateral.

Hayes has already prepared for a recovery in liquidity, stating he has maintained a larger position in dollars pending a revision of the FIMA rules by the Fed.

How the FIMA Facility Fuels Intervention

The process involves a foreign monetary authority pledging its Treasuries to the Federal Reserve in exchange for dollars. These dollars are then sold to purchase another currency, such as the yen. This structure enables a country to finance currency interventions without needing to sell its Treasury holdings outright.

As of the most recent H.4.1 release for the week ending August 5, foreign-official repurchase agreements were at zero, indicating that the liquidity channel Hayes proposes for Bitcoin is currently inactive.

The Federal Open Market Committee (FOMC) directive presently imposes a cap of $60 billion on the total outstanding FIMA repo exposure for any single counterparty at one time. The Foreign Currency Subcommittee possesses the authority to modify the interest rate, maturity terms, eligible counterparties, or the counterparty limit. Hayes is specifically waiting for this subcommittee to create a larger channel for liquidity.

Japan's Situation Highlights FIMA's Limits

Recent events involving Japan underscore the current limitations. Data from the Bank of Japan suggested that the country might have expended as much as $58.9 billion to purchase yen on July 30. A subsequent operation on July 31, in which the United States participated, may have amounted to $36.58 billion.

These estimates place the total Japanese spending over two days at approximately $95.55 billion, a figure that already surpasses the existing $60 billion FIMA counterparty limit.

On August 12, the yen was trading near 159.45 per dollar, close to the 160 level that has historically triggered intervention efforts. Treasury Secretary Scott Bessent has advocated for the Fed to broaden the FIMA facility, presenting it as a method for Japan to acquire dollars against its Treasuries and circumvent selling those securities on the open market.

This combination of factors creates the policy environment Hayes is looking to trade. Japan has demonstrated its readiness to spend nearly $100 billion in two days to bolster the yen, and Bessent has openly pointed to FIMA as a potential future support mechanism.

Hayes's Trillion-Dollar Thesis

Hayes calculates Japan's potential collateral capacity by assigning over $1.1 trillion in Treasuries to the Japanese government. To this, he adds an estimated $230 billion in U.S. Treasuries held by Japan’s Government Pension Investment Fund (GPIF), arriving at a theoretical total of $1.37 trillion.

Data from the Treasury International Capital (TIC) system indicated that Japan-attributed Treasury holdings were $1.14 trillion in May 2026. The TIC data, which depends heavily on U.S.-based custodians and broker-dealers, does not offer a precise owner-by-owner breakdown within Japan.

The Fed extends the facility to approved FIMA account holders, primarily foreign central banks and other monetary authorities with the necessary Fed accounts. Hayes's proposal explicitly calls for expanded eligibility to include entities like the GPIF and the complete removal of the $60 billion cap.

A collateral pool of $1.37 trillion is roughly 22.9 times larger than the current $60 billion ceiling. Therefore, approaching anything near Hayes's maximum potential would necessitate a substantially expanded facility before this liquidity trigger could be activated. The participation of the GPIF would also depend on a specific eligibility ruling, meaning Hayes's headline figure represents the collateral capacity under a revised framework.

The Bull and Bear Scenarios

Hayes's bullish case is contingent on the Fed first expanding the facility, followed by foreign official institutions actually drawing upon it. A FIMA repo involves a temporary swap of Treasury collateral for dollars, giving the foreign authority access to dollar liquidity without an outright sale of its securities. The repo is reversed upon maturity.

Substantial FIMA balances would temporarily add repo assets to the Federal Reserve's balance sheet. Reports have observed that heavy usage would swell the Fed's holdings for the duration of these transactions. Hayes interprets this temporary expansion as a liquidity boost for monetary assets, identifying Bitcoin, physical gold, and gold miners as his favored exposures.

The activation of Hayes's liquidity trigger involves two observable steps:

• First, the Fed must either increase the counterparty limit or broaden eligibility.
• Second, the H.4.1 report must begin to show significant foreign official repurchase agreements, moving away from the current zero balance.

A rule change without subsequent usage would mean Hayes’s liquidity trigger remains inactive.

Conversely, the bear case involves FIMA balances staying near zero. In this scenario, Japan would need to depend on its existing intervention resources or implement a tighter domestic monetary policy to support the yen. Market observers have also noted that Japan already has access to other dollar channels, which could dampen demand for an enlarged FIMA facility. Such an outcome would deny Hayes's Bitcoin thesis the balance sheet expansion he anticipates.

A further risk is that a rapid rally in the yen could compel investors to liquidate their yen-funded positions across global markets. This liquidation channel could negatively impact Bitcoin before any offsetting liquidity from FIMA becomes available. Hayes cites the 2024 yen carry unwind as his model for this particular risk.

The Current Impasse

Despite Japan's estimated intervention of nearly $95.55 billion on July 30 and July 31, the yen has not been kept far from the 160-per-dollar mark. Bessent is pushing for a larger Fed backstop, yet the official directive still holds the counterparty ceiling at $60 billion. The H.4.1 release from August 5 continues to report zero foreign-official repos.

Ultimately, Hayes has distilled a trillion-dollar macroeconomic thesis into two observable data points. The first is the Fed's rulebook governing FIMA limits and eligibility, and the second is the foreign-official repo line item in the H.4.1 report. His proposed Bitcoin liquidity trigger will only activate when a broadened facility generates real-world usage.