Institutional Monitor

This piece is technical. You will not hear a “fundamental reason” for what happened on Nov 5. You can look elsewhere for that, and you will find a thousand different takes on what people “think” happened. In quantitative finance, an opinion without data is considered completely useless.

In our view, the speed and magnitude of the move point to acute leverage and forced de-grossing. Using our in-house models and prime brokerage data, we show how it happened, how it was allowed to run that far, and how it became one of the worst days for hedge fund performance we’ve seen.

Our last two pieces would have had you well positioned on risk if you fully understood them.

Hedges Off

Larger moves in the market happen because the stage is already set for them behind the scenes.

On November 4, with the midterms behind it, the market treated the event risk as cleared and investors sold their protection into the rally. Nasdaq volatility fell six times more than a rally that size usually takes out, the 12th largest gap since 2009. The next day they had to buy it all back, and the VVIX jumped 44.6 points, its biggest one-day rise since the February 2018 volatility crash.

Key Takeaways

• Vol control funds are running near their highest exposure in five years with a cut already locked in. Another 2% drop would force tens of billions of mechanical selling, and roughly twice that on 3%.

• Dealer gamma fell sharply on Friday and is one bad session from turning negative, where hedging joins the move and next-day swings have run about two and a half times their normal size.

• Trend following has outperformed every major hedge fund strategy this year, and its real value is diversification: it tends to pay most when an equity sell-off persists.

• Asset managers have bought back close to half of their record VIX short since early October, so the demand that came from it is far smaller now, while levered funds built their largest Nasdaq long since November.

Portfolio Manager’s Summary

What happens to the market if volatility picks up and persists? We set the fundamentals aside and look only at the selling that mechanical strategies would be forced into.

On our numbers, another 2% decline in the S&P would force tens of billions of mechanical selling from vol control funds alone, and roughly twice that on a 3% decline, with CTAs having already sold and leveraged ETFs selling into the same move, and dealers set to join them once the market’s cushion runs out.

Four days of buying, undone in one session.

With vol control exposure already in the top 5% of the last five years, the market is increasingly vulnerable to a self-reinforcing feedback loop.

This is not a “view” these funds hold, it is a rule they follow. Their exposure moves inversely with realised volatility, so the calm that let them lever up is the same input that now forces them out. Friday’s drop has already locked in a cut for Tuesday before markets even reopen, and every further sharp down day adds to it. The chart above shows where that path leads if volatility persists: in COVID and the 2025 tariff shock the same funds were pushed down to a fraction of today’s exposure, selling the whole way.

With gamma at spot on the verge of slipping negative, the selling can get uglier.

Gamma at spot fell sharply on Friday, and another session like it would take it below zero. Above zero, dealer hedging leans against the move. Below it, the hedging joins the move, and next-day swings have run about two and a half times their normal size, in both directions. Forced sellers meeting a market that has lost its cushion is how a pullback turns into a run.

Key takeaway: The selling from here is mechanical, not discretionary. Vol control funds are running near their highest exposure in five years with a cut already locked in, and dealer gamma at spot is one bad session away from turning negative. A quiet week lets both reset; another sharp down day hands the market forced sellers and no cushion at the same time.

Key Takeaways

• Commodities did the hedging this year: energy doubled while bonds lost money, and stocks and bonds both fell with rising oil.

• Trend followers still hold their energy longs at the same entries and are short every metal.

• Vol control funds are at their fullest since October 2025, and dealers have slipped into negative gamma heading into the Fed.

• Asset managers covered a quarter of their VIX short, while managed money sold crude for a sixth week and gold for an eighth.

Hedging Portfolios With Commodities

Commodities did the hedging this year. The Bloomberg Commodity Index has returned roughly a third since January, energy has doubled and the oil complex is up more than 150%. Over the same stretch the S&P made 13% and Treasuries lost money at both the 10y and the 30y. Bonds, the leg meant to protect a portfolio, fell, and commodities did the protecting.

Not every commodity played its part. Precious metals are down 9% on the year, so gold, the textbook hedge, did not do the work. The return came from energy, and from supply shocks that hit oil far harder than they hit stocks.

We flagged the trade last week: trend followers were as long oil and as short government bonds as they have been only twice in 20 years, in the 2022 inflation shock and now.

Oil has been the far more violent market this year. Oil volatility has run at a median 3.3 times equity volatility in 2026, the highest of any year since 2010 and well above the usual 2 times. That is the cost of the hedge: today’s ratio of 3.2 times has been exceeded on only 7% of sessions since 2010, so a commodity position carries roughly three times the risk of the same amount in equities.

The case does not rest on this year’s return. Stocks and bonds have both fallen with rising oil more consistently this year than in any year since 2000, so a commodity position protects both legs of a portfolio at once.

That holds even if crude and European gas ease from here as Mideast supply adapts: escalation or a cold European winter can still push energy sharply higher, and that is the shock a stock and bond portfolio is least protected against. We think a small commodity allocation earns its place, tactically and structurally.

The takeaway: commodities hedge supply and inflation shocks rather than every shock, they belong in small size, and this year the protection came through energy, not gold. Below is how trend followers are holding that trade now.

Key Takeaways

• Extreme short positioning by asset managers in VIX futures has coincided with strong VIX forward returns.

• Systematic funds have little left to buy, with trend followers long only the S&P and Nasdaq among US indices and vol control funds at their fullest in a year.

• The market’s cushion is gone, with dealer gamma near zero and a thinner order book heading into Monday.

• Asset managers took 10y length to a fresh record, while managed money cut crude for a fifth straight week and gold for a seventh.

Portfolio Manager’s Summary

Friday was the day the crowded volatility trade got tested. With the S&P down a little over 1%, the front-month VIX future rose about one and a half vol points more than that decline would normally explain, and as much as three points intraday, a move seen only a handful of times in the past two years.

Asset managers went into the session with a record short in VIX futures, built over six weeks and barely trimmed since it peaked the week before, and when the tape turned that short had to be covered into a rising market.

The positioning history puts Friday in context. Each dot on the chart below marks a week when this cohort was as short as it is now.

• The July 2024 short, the deepest on record until last month, ran straight into the yen carry unwind, when the VIX tripled from the low teens to near 40.

• The January 2026 short preceded the US and Israeli strikes on Iran, with the VIX climbing from the mid teens to above 30 by late March.

Of the nine episodes with a full month behind them, the VIX was higher a month later in seven.

The difference this time is the starting point: those episodes began with volatility cheap, while this one met Friday with the VIX already jumping, so part of the move is behind us.

What remains is the setup the rest of this issue describes, with dealers no longer cushioning moves, a thinner book and vol control funds at their fullest in a year. If the covering continues, the scramble for volatility lands on a market with little left to absorb it.

Key Takeaways

• Bond shorts paid: CTAs made more than 4% in September, the best of any hedge fund category, and now trail only tech-focused funds this year.

• CTAs are long only where it counts: S&P and Nasdaq near full, Dow, Russell and Midcap short, so a pullback has plenty to sell.

• The cushion is real but thin: the S&P book is at its deepest since late September and gamma is positive, yet the flip sits less than half a percent below spot.

• Real money keeps loading the 10y: asset managers pushed 10y length to a decade high even as they sold the long end.

Portfolio Manager’s Summary

Bond positioning has split in two. Quant funds have profited from building short duration over the past month, while discretionary managers have been scrambling to contain the long duration and spread exposure they carried into the selloff.

We flagged on 29 August that every government bond market screened short for trend followers, and those shorts have only grown more profitable since.

September’s hedge fund returns show the split. Quant funds took advantage of the bond selloff and the swings in tech stocks, with CTAs, quant macro and quant equity funds all returning around 3% to 4% on the month. CTAs were the best performing category and now trail only tech-focused equity funds this year. Discretionary macro and equity long/short were flat to slightly down, and the mostly discretionary event driven, credit and equity sector funds lost ground.

Real money is still carrying the long duration overhang

Discretionary managers, real money in particular, are still working it off. Active bond funds lifted their duration to elevated levels in recent weeks, balanced funds held above average bond exposure and have been retreating, and the cutting shows up in futures into the end of September. Asset managers are selling the long end, yet their 10y Treasury length remains the largest in over a decade, so much of the overhang is still in place.

CTA bond shorts have reached an extreme

The short build is just as visible in CTA signals, which hit their most stretched in Treasuries and Bunds since October 2023 on 30 September. That helped returns over the past month but leaves the cohort exposed to a reversal into the fourth quarter: the last time these signals read this short, both futures rallied more than 6% into year end.

That raises two-way risk for bonds. Either stretched signals push trend followers to take profit, reversing some of the recent rise in yields, or discretionary managers amplify the selloff by cutting their duration and spread exposure further. We lean to the second in the near term, because the discretionary bond book is the larger of the two.