May 2026 QIS Update: Carry Paid. Convexity Didn't.

May's QIS tape had a simple message, but it took three weeks to deliver it.

Markets moved through a clean sequence: an AI-led equity rally early in the month, a sharp mid-month repricing in rates and inflation expectations, then a late relief phase as oil sold off hard and macro anxiety unwound. The month ended constructively. The path there was not.

That path dependency is exactly what explains May's QIS outcomes.

What the numbers said

Average composite return: +0.10%. Median: –0.07%. Fewer than half of composites finished positive. That is not "easy beta." It is the signature of a month where a specific set of premia harvested quietly while a broader set of strategies either trod water or paid insurance.

Dispersion between best and worst performers: ~4.1 percentage points. Enough to reward conviction, not enough to call it a crisis regime.

The pattern was unusually consistent:

Leaders: Commodities Liquidity (+2.53%), Credit Momentum (+2.12%), Commodities Carry (+1.68%), Credit Carry (+1.60%)

In short: carry and short-volatility dominated. Long-volatility hedges and defensive equity factors were a consistent drag. Credit was the strongest asset class (+1.23% on average); Rates the weakest (–0.45%).

The mechanism that matteres most

Rates volatility was the headline risk, but energy was the real transmission channel.

Oil's sharp late-month decline did three things simultaneously: it unwound the stagflation narrative that had pressured mid-month sentiment, it supported equity indices into month-end, and it reversed the commodity trend environment that had rewarded momentum strategies in prior months. Strategies with exposure to commodity convexity felt both sides of that move.

The rates picture was similarly path-dependent. Month-end yields finished only modestly above April levels — but the mid-month sell-off and subsequent retracement was a textbook whipsaw for trend-following and option-based hedges. The headline number looked tame. The intramonth journey was not.

What we take into June

May reinforces a pattern that has held across 2026: carry premia are available and are being earned — but they are being earned in a market that can still reprice inflation, rates, and energy quickly. That changes the risk calculus.

The late-May relief in oil and rates is the key variable. If it proves durable, carry and credit-linked premia remain well-supported. But the more important question for portfolio construction is not whether that relief holds — it is whether the protection budget is being preserved for the moment when it structurally matters more.

Carry in a stable macro environment is a harvesting exercise. Carry in a regime with genuine repricing risk is a different trade — and the cost of treating them the same is not symmetric.