Fed facility unlocks $1 trillion for Japan yen defence
Japan can fund multiple record-breaking yen interventions using a Federal Reserve facility, a capacity that is keeping currency short-sellers cautious despite the yen's recent slide back toward 160.
Tokyo possesses the firepower for several more interventions on the scale of last month's historic operation, according to Goldman Sachs. Access to the Federal Reserve's FIMA repo facility theoretically makes Japan's full $1 trillion in US dollar reserves available in liquid form, sparing the finance ministry from dumping Treasuries on the secondary market. This access, combined with roughly $200 billion already held in cash or equivalents, means "they have plenty of capacity to keep intervening if they wish," said Karen Fishman, a Goldman Sachs Research strategist.
Last month's joint US-Japan action, the first since 1998, temporarily pushed the yen past its 200-day moving average of 158 per dollar. The operation saw Tokyo deploy an estimated $85 billion over two days, marking its largest such foray outside the aftermath of the 2011 Fukushima disaster. Those gains are now fading, with the currency slipping back to near the key 160 level and giving back about half its post-intervention strength.
The prospect of a much larger war chest has nevertheless shifted market sentiment. Clients "really did get quite bulled up on the yen" once the Fed facility potentially put the full $1 trillion within reach, said Praneet Shah, head of FX options trading at Goldman. Elevated premiums on short-dated yen calls show traders remain on guard for a sudden gap move.
This fear of state-sponsored short squeezes is deterring fresh selling as the currency drifts back toward 160. "If spot is trading up into 160, there's a real risk that you don't want to continue selling yen when you've got this large risk of a drawdown still priced by the market," Shah said.
Despite this tactical deterrence, intervention remains a temporary fix rather than a sustainable solution. The overwhelming driver of the exchange rate is the massive carry differential between US and Japanese borrowing costs. The 10-year US Treasury yield stood at 4.690% late Wednesday, compared with 2.839% for 10-year Japanese government bonds.
The Bank of Japan's September policy meeting is now the focal point for whether the currency's recent reprieve holds. Markets currently price a 65% chance of a 25-basis-point rate hike next month. "If they don't deliver" that hike, Fishman warned, "that would put renewed downward pressure on the yen."
Softer US economic data could still aid the currency by weakening the case for further Federal Reserve rate hikes. Wednesday's July CPI report matched expectations at 0.1% monthly and 3.4% annually, prompting a modest pullback in Treasury yields. Shah noted that any future data misses would immediately revive expectations for another round of intervention.
