diff --git a/cschwabpy/models/__init__.py b/cschwabpy/models/__init__.py
index 6459efa..1d90673 100644
--- a/cschwabpy/models/__init__.py
+++ b/cschwabpy/models/__init__.py
@@ -207,12 +207,12 @@ class Market(JSONSerializableBaseModel):
 
 
 class EquityMarket(JSONSerializableBaseModel):
-    EQ: Market
+    EQ: Optional[Market] = None
 
 
 class OptionMarket(JSONSerializableBaseModel):
-    EQO: Market
-    IND: Market
+    EQO: Optional[Market] = None
+    IND: Optional[Market] = None
 
 
 class MarketHourInfo(JSONSerializableBaseModel):
@@ -220,19 +220,30 @@ class MarketHourInfo(JSONSerializableBaseModel):
     option: Optional[OptionMarket] = None
 
     @property
-    def is_equity_market_open(self) -> Optional[bool]:
-        if self.equity is None:
-            return None
+    def is_equity_market_open(self) -> bool:
+        if self.equity is None or self.equity.EQ is None:
+            return False
 
         return self.equity.EQ.isOpen
 
     @property
-    def is_option_market_open(self) -> Optional[bool]:
+    def is_option_market_open(self) -> bool:
         if self.option is None:
-            return None
+            return False
 
         return self.option.EQO.isOpen or self.option.IND.isOpen
 
+    @property
+    def equity_regular_market_hours(self) -> List[MarketHours]:
+        if (
+            self.equity is None
+            or self.equity.EQ is None
+            or self.equity.EQ.sessionHours is None
+        ):
+            return []
+
+        return self.equity.EQ.sessionHours.regularMarket
+
 
 class OptionChainQueryFilter(QueryFilterBase):
     symbol: str
diff --git a/pyproject.toml b/pyproject.toml
index c751a8b..0511043 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "cschwabpy"
-version = "0.1.3.7"
+version = "0.1.3.8"
 description = ""
 authors = ["Tony Wang <ivytony@gmail.com>"]
 readme = "README.md"
diff --git a/setup.py b/setup.py
index 5fd193b..0e52312 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 setup(
     name="CSchwabPy",
-    version="0.1.3.7",
+    version="0.1.3.8",
     description="Charles Schwab Stock & Option Trade API Client for Python.",
     long_description=long_description,
     long_description_content_type="text/markdown",
diff --git a/tests/test_models.py b/tests/test_models.py
index d20ee5b..dc64c4b 100644
--- a/tests/test_models.py
+++ b/tests/test_models.py
@@ -97,6 +97,7 @@ async def test_market_hours(httpx_mock: HTTPXMock) -> None:
     all_market = MarketHourInfo(**all_market_json)
     assert all_market is not None
     assert all_market.equity is not None
+    assert all_market.equity.EQ is not None
     assert all_market.equity.EQ.sessionHours is not None
     assert all_market.equity.EQ.sessionHours.regularMarket is not None
     assert all_market.equity.EQ.sessionHours.preMarket is not None