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-rw-r--r--python/analytics/option.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/python/analytics/option.py b/python/analytics/option.py
index 40cc5c9a..4db3d1dc 100644
--- a/python/analytics/option.py
+++ b/python/analytics/option.py
@@ -140,7 +140,8 @@ class BlackSwaption(ForwardIndex):
@property
def moneyness(self):
- return self.strike / self.atm_strike
+ return self._strike / g(self.index, self.index.fixed_rate, self.exercise_date,
+ pv=self.forward_pv)
@property
def direction(self):