>3665BECD
This transaction is selling the usd/jpy at 76.25 on October 27, 2011. The ten year low is 75.75 which traded 2 days later on October 30th. The pair is currently trading around 113. Needless to say that trade nearly sold the bottom.
Soros is known for currency manipulation. Perhaps this is a clue to what the he was planning?