diff --git a/zipline/pipeline/data/buyback_auth.py b/zipline/pipeline/data/buyback_auth.py
index 8710fd29..dd58e9b2 100644
--- a/zipline/pipeline/data/buyback_auth.py
+++ b/zipline/pipeline/data/buyback_auth.py
@@ -1 +1,17 @@
-__author__ = 'mtydykov'
+"""
+Dataset representing dates of upcoming earnings.
+"""
+from zipline.utils.numpy_utils import datetime64ns_dtype, float64_dtype
+
+from .dataset import Column, DataSet
+
+
+class BuybackAuthorizations(DataSet):
+    """
+    Dataset representing dates of recently announced buyback authorization.
+    """
+    previous_buyback_value = Column(float64_dtype)
+    previous_buyback_share_count = Column(float64_dtype)
+    previous_buyback_value_announcement = Column(datetime64ns_dtype)
+    previous_buyback_share_count_announcement = Column(datetime64ns_dtype)
+