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-rw-r--r--python/analytics/tranche_basket.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/python/analytics/tranche_basket.py b/python/analytics/tranche_basket.py
index 35efac81..b17c6baf 100644
--- a/python/analytics/tranche_basket.py
+++ b/python/analytics/tranche_basket.py
@@ -469,7 +469,7 @@ class DualCorrTranche:
@property
def corr01(self):
orig_pv = self.pv
- orig_rho = self.rho
+ orig_rho = self.rho.copy()
eps = 0.01
# multiplicative version
# self.rho = np.power(self.rho, 1 - eps)