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# Diagonal Volatility Carry: July 2026
- URL: https://www.rivativ.ai/monthly-diagonal-2026-07/
- Published: 2026-09-09T09:58:21.000Z
- Updated: 2026-09-09T09:58:21.000Z
- Author: Theo Paraskevopoulos

> The Diagonal Volatility Carry strategy returned +0.11% in July, outperforming a near-flat benchmark by 7 basis points in a month that offered an attractive variance risk premium but repeatedly tested short-volatility positioning with geopolitically-driven spikes. The positive result, modest as it is, reflects the risk engine and convexity leg functioning as designed — containing drawdown during stress periods while preserving enough carry to finish the month ahead. Advisers should read this as a month where the strategy traded a larger potential gain for capital discipline.

Diagonal Volatility Carry returned +0.11% against a benchmark of +0.03%, outperforming by 7 basis points — a positive result, but a modest one that reflects the double-edged nature of July's volatility environment. The strategy harvests premium by being net-short VIX calls, monetising the gap between implied and realised volatility as it decays; with the VRP unusually wide — VIX at 17.09 against 20-day realised volatility of just 11.9% — the structural conditions for carry were attractive. 

However, two episodes of sharp implied volatility spikes, first from the semiconductor rout triggered by Moonshot AI's model release and then from the Fed's divisive July decision and renewed Iran escalation, created intra-month mark-to-market pressure on the net-short VIX position. The long upper leg of the ratio structure provided partial cushioning during those spikes, but because the strategy remains net-short above that strike, the gains from theta decay were partially offset by the cost of riding through elevated volatility. 

The risk engine's automatic scaling as conditions turned more hostile further contained the position size during peak stress, which protected capital but also limited participation in the premium that subsequently decayed. A positive month, but one where macro noise clipped what the VRP backdrop alone would have suggested was possible.

### Talking Points

- The strategy produced a positive return in a month where volatility spiked twice. Renewed Middle East tensions and a sharp technology selloff pushed implied volatility sharply higher on two separate occasions in July. The strategy's built-in convexity leg and automatic risk-scaling limited the damage, allowing the book to end the month in positive territory despite the turbulence.
- The wide gap between implied and realised volatility points to a strong underlying opportunity. Options markets consistently priced in far more volatility than actually materialised in July — exactly the condition this strategy is designed to exploit. When that gap is wide and macro noise eventually subsides, the strategy is well-positioned to convert it into return more fully.
- End clients should understand this strategy carries real tail risk and is managed accordingly. Unlike fully hedged structures, Diagonal Volatility Carry remains net-short volatility above its long strike — meaning a large enough volatility spike can produce losses beyond the premium collected. The value of the approach rests on disciplined sizing and systematic rolling, not a structural cap on loss.

![](https://storage.ghost.io/c/bf/48/bf480f38-3f03-400d-b1af-7b0188655ac7/content/images/2026/09/2026-07-31_strategy_performance_Strategy_2.png)