We've seen a lot of it happening in recent times and today is no exception
I posted the full list of expiries here earlier but here's the main ones in play atm.
EURUSD: 1.1660 (EUR 1.12bln) 1.1700 (940m) 1.1795-00 (915m) 1.1815-25 (4.8bln)
USDJPY: 112.45-50(USD 1.1bln) 113.50 (1.27bln) 113.90-00 (1.5bln)
AUDUSD: 0.7625-30 (AUD 600m)
Current levels as we wait on the 13.30 GMT data releases:
EURUSD 1.1770 USDJPY 113.10 AUDUSD 0.7595
Remember that these are "vanilla" options so still in play right up to expiry at 15.00 GMT even if breached in the meantime, unlike barrier options which cease to be once hit. The actual amounts can change right up to expiry.
For my latest post on how to use this info click here