Recent price action in FX options shows a market short of protection against deeper EUR/USD declines. The key levels to watch are 1.1100 and 1.1000, especially the latter, as that round level holds the biggest barrier and trigger-type options, which could leave the market more exposed to further losses.

Implied volatility gauges realised volatility, and it wasn't pricing the recent sharp EUR/USD fall. It has since repriced rapidly higher, from multi-year lows to its highest since March.

That came as EUR/USD fell on the firmer USD and then on French debt worries over recent weeks. On Monday, EUR/USD hit 1.1161, its weakest level since May 2025. Since mid-September, benchmark 1-month implied volatility has risen from 4.5 to 7.3, while the 1-year measure has increased from 6.0 to 7.3. Those are significant gains.

The break below the 1.1300 — and then 1.1200 — barrier options drove demand for implied volatility, especially downside strikes. Hedge funds bought large amounts of 6-12-month expiry digital EUR puts with strikes in the 1.0700-1.0600 zone as a cheaper downside hedge. That added to the option volatility short covering.

DTCC-traded options data shows a significant drop in the number of existing strikes below 1.1100, and an even bigger drop below 1.1000 (see chart). The market is clearly underhedged for sub-1.1000 levels. With volatility much higher, anyone needing cover now has to pay a much higher premium, which should help limit implied volatility setbacks.

Risk reversals remain a favoured way to hedge EUR/USD downside, hence the big rise in the volatility premium for EUR puts over calls. When spot dips, implied volatility rises and holders benefit.

If the 1.1100 and especially 1.1000 barriers give way, the FX options market could find itself short gamma. Dealers would have to chase EUR/USD lower while buying options. That would reward those already holding EUR puts, especially lower strikes, and could speed up the decline beyond what fundamentals justify.

For now, EUR/USD is consolidating above 1.1200 as the French ​spread against Germany narrows. Implied volatility has eased, with 1-month back at 6.5 from 7.3, but the market remains nervous. If EUR/USD comes back under pressure, FX options suggest 1.1100-1.1000 is where the decline could turn significantly more volatile.EUR/USD FX option strikes expiring between Oct 6 and Dec 31



EUR/USD FXO implied volatility


EUR/USD 25 delta risk reversals-

(Richard Pace is a Reuters market analyst. The views expressed are his own)