diff --git a/zipline/assets/asset_writer.py b/zipline/assets/asset_writer.py
index c11142e7..a4da5aa1 100644
--- a/zipline/assets/asset_writer.py
+++ b/zipline/assets/asset_writer.py
@@ -299,9 +299,9 @@ class AssetDBWriter(with_metaclass(ABCMeta)):
                 primary_key=constraints,
             ),
             sa.Column('symbol', sa.Text),
-            sa.Column('company_symbol', sa.Text),
+            sa.Column('company_symbol', sa.Text, index=True),
             sa.Column('share_class_symbol', sa.Text),
-            sa.Column('fuzzy_symbol', sa.Text),
+            sa.Column('fuzzy_symbol', sa.Text, index=True),
             sa.Column('asset_name', sa.Text),
             sa.Column('start_date', sa.Integer, default=0),
             sa.Column('end_date', sa.Integer),