Hedge funds have amassed the largest net short position on the yen since 2007, rebuilding a crowded bet that triggered a violent commodity repricing two years ago.
Hedge funds have amassed the largest net short position on the yen since 2007, rebuilding a crowded bet that triggered a violent commodity repricing two years ago.

Hedge funds have amassed the largest net short position on the yen since 2007, rebuilding a crowded bet that triggered a violent commodity repricing two years ago.
Gold traded near $4,126 an ounce as hedge funds held 138,000 net short yen futures and options contracts as of June 30, the largest bearish position since 2007, according to CFTC data reported by Bloomberg. The yen sits near ¥162 to the dollar, its weakest since 1986.
"The trade was a ticking time bomb," BCA Research told Bloomberg in February. Japan has since spent a record ¥11.73 trillion ($72.7 billion) on currency intervention between late April and late May, according to Hedgeweek, yet the yen weakened further to ¥162. Finance Minister Satsuki Katayama has said the government is prepared to act again.
The Bank of Japan's policy rate stands at 1% after its June hike, a 31-year peak, while the Federal Reserve has held its target range at 3.50% to 3.75% for four consecutive meetings. The rate gap funding the carry trade is narrower than 2024's, when the Fed sat near 5% against a BOJ at zero, meaning less carry to unwind per contract. Markets assign a 97% probability the BOJ holds at its July 30-31 meeting, per Polymarket odds.
The 2024 precedent shows what a forced unwind does to metals. Gold fell more than $100 to an intraday low near $2,367 on Aug. 5, 2024, as leveraged funds sold the most liquid asset to meet yen-denominated margin calls. Safe-haven buying returned before the close, completing a round trip within a single session. Silver fell harder than gold, while copper and crude sold off with equities and did not recover.
The 2024 Playbook
The August 2024 episode compressed a full commodity cycle into about 72 hours. The Nikkei plunged 12.4% on Aug. 5, its worst single-day drop since 1987, and the VIX surged to 65.73. Gold had risen to an intraday high of $2,476 on Aug. 2 following a weak US jobs report, then dropped over $100 three days later. Bitcoin fell as much as 17% intraday. The stabilization came when BOJ Deputy Governor Shinichi Uchida said on Aug. 7 the bank would not raise rates further amid market instability. The Nikkei had already rebounded 10.2% the previous day, and the VIX fell below 20 by Aug. 12.
Three Reasons a Repeat Could Be More Chaotic
Three factors have changed since 2024. First, the intervention option has been largely exhausted: the $72.7 billion spent this spring was a record, occurred before any actual unwind, and the yen weakened through it anyway, raising questions about remaining Ministry of Finance capacity. Second, Japanese government bond yields are rising toward multi-decade highs, with the 10-year reaching 2.846%, squeezing the BOJ from another direction and limiting its ability to repeat the Uchida strategy of promising no action. Third, the position is larger than the one that cleared in 2024.
The honest counterweights belong in the same paragraph. The rate gap is narrower, the BOJ is expected to hold, and crowded positions have unwound gradually before. The 2024 trigger required a rate hike and a weak US jobs report in the same week to detonate.
What Commodity Investors Should Watch
The 2024 trigger was a pairing: a BOJ move and a weak US payrolls print within 72 hours. The upcoming calendar stacks the same ingredients within days: the BOJ meets July 30-31, and the next US jobs report falls that same week. For positioning, a disorderly unwind would likely hit gold first and hardest in the opening hours, because it is the most liquid asset to sell. The structural bid underneath gold is stronger now than in 2024: central banks purchased 41 tonnes in May alone, and China's largest ETF is now a gold fund. Silver should be expected to trade worse than gold in a selloff, and copper worse still, with mining stocks amplifying the direction of their underlying metal. The market that just rebuilt a 2007-sized short is betting the calm holds through August. The last time this bet was so crowded and broke, the entire commodity complex repriced in three days, and gold was the only asset that ended the week where it started.
This article is for informational purposes only and does not constitute investment advice.