diff --git a/ibflex/Types.py b/ibflex/Types.py
index 6ab7555..fb8f4b2 100644
--- a/ibflex/Types.py
+++ b/ibflex/Types.py
@@ -479,6 +479,7 @@ class EquitySummaryByReportDateInBase(FlexElement):
     marginFinancingChargeAccrualsShort: Optional[decimal.Decimal] = None
     cryptoLong: Optional[decimal.Decimal] = None
     cryptoShort: Optional[decimal.Decimal] = None
+    liteSurchargeAccruals: Optional[decimal.Decimal] = None
 
 
 @dataclass(frozen=True)
@@ -709,6 +710,8 @@ class CashReportCurrency(FlexElement):
     salesTaxYTD: Optional[decimal.Decimal] = None
     salesTaxPaxos: Optional[decimal.Decimal] = None
     otherIncome: Optional[decimal.Decimal] = None
+    otherIncomeMTD: Optional[decimal.Decimal] = None
+    otherIncomeYTD: Optional[decimal.Decimal] = None
     otherIncomeSec: Optional[decimal.Decimal] = None
     otherIncomeCom: Optional[decimal.Decimal] = None
     otherFeesMTD: Optional[decimal.Decimal] = None
@@ -1144,7 +1147,8 @@ class Trade(FlexElement):
     subCategory: Optional[str] = None
     issuerCountryCode: Optional[str] = None
     rtn: Optional[str] = None
-    initialInvestment: Optional[decimal.Decimal] = None
+    initialInvestment: Optional[bool] = None
+    positionActionID: Optional[str] = None
 
 
 @dataclass(frozen=True)
@@ -1296,7 +1300,8 @@ class Lot(FlexElement):
     issuerCountryCode: Optional[str] = None
     relatedTradeID: Optional[str] = None
     rtn: Optional[str] = None
-    initialInvestment: Optional[decimal.Decimal] = None
+    initialInvestment: Optional[bool] = None
+    positionActionID: Optional[str] = None
 
 
 @dataclass(frozen=True)
@@ -1385,6 +1390,9 @@ class SymbolSummary(FlexElement):
     tradeID: Optional[str] = None
     orderID: Optional[decimal.Decimal] = None
     execID: Optional[str] = None
+    ibExecID: Optional[str] = None
+    extExecID: Optional[str] = None
+    exchOrderId: Optional[str] = None
     brokerageOrderID: Optional[str] = None
     orderReference: Optional[str] = None
     volatilityOrderLink: Optional[str] = None
@@ -1392,12 +1400,19 @@ class SymbolSummary(FlexElement):
     origTradePrice: Optional[decimal.Decimal] = None
     origTradeDate: Optional[datetime.date] = None
     origTradeID: Optional[str] = None
+    transactionID: Optional[str] = None
     #  Despite the name, `orderTime` actually contains date/time data.
     orderTime: Optional[datetime.datetime] = None
+    openDateTime: Optional[datetime.datetime] = None
+    holdingPeriodDateTime: Optional[datetime.datetime] = None
     dateTime: Optional[datetime.datetime] = None
     reportDate: Optional[datetime.date] = None
     settleDate: Optional[datetime.date] = None
+    settleDateTarget: Optional[datetime.date] = None        # expected date of ownership transfer
+    taxes: Optional[decimal.Decimal] = None
     tradeDate: Optional[datetime.date] = None
+    tradePrice: Optional[decimal.Decimal] = None    
+    tradeMoney: Optional[decimal.Decimal] = None            # TradeMoney = Proceeds + Fees + Commissions
     exchange: Optional[str] = None
     buySell: Optional[enums.BuySell] = None
     quantity: Optional[decimal.Decimal] = None
@@ -1427,6 +1442,40 @@ class SymbolSummary(FlexElement):
     relatedTradeID: Optional[str] = None
     origTransactionID: Optional[str] = None
     relatedTransactionID: Optional[str] = None
+    positionActionID: Optional[str] = None
+    changeInPrice: Optional[decimal.Decimal] = None
+    changeInQuantity: Optional[decimal.Decimal] = None
+    closePrice: Optional[decimal.Decimal] = None
+    commodityType: Optional[str] = None
+    cost: Optional[decimal.Decimal] = None
+    deliveryType: Optional[str] = None
+    exchOrderId: Optional[str] = None
+    extExecID: Optional[str] = None
+    fifoPnlRealized: Optional[decimal.Decimal] = None
+    fineness: Optional[decimal.Decimal] = None
+    holdingPeriodDateTime: Optional[datetime.datetime] = None
+    ibCommission: Optional[decimal.Decimal] = None
+    ibCommissionCurrency: Optional[str] = None
+    ibExecID: Optional[str] = None
+    ibOrderID: Optional[str] = None
+    initialInvestment: Optional[bool] = None
+    mtmPnl: Optional[decimal.Decimal] = None
+    netCash: Optional[decimal.Decimal] = None
+    netCashInBase: Optional[decimal.Decimal] = None
+    notes: Optional[str] = None
+    openCloseIndicator: Optional[enums.OpenClose] = None
+    openDateTime: Optional[datetime.datetime] = None
+    origOrderID: Optional[str] = None
+    rtn: Optional[str] = None
+    serialNumber: Optional[str] = None
+    settleDateTarget: Optional[datetime.date] = None
+    taxes: Optional[decimal.Decimal] = None
+    tradeMoney: Optional[decimal.Decimal] = None
+    tradePrice: Optional[decimal.Decimal] = None
+    transactionID: Optional[str] = None
+    weight: Optional[str] = None
+    whenRealized: Optional[datetime.datetime] = None
+    whenReopened: Optional[datetime.datetime] = None
 
 
 @dataclass(frozen=True)
@@ -1535,7 +1584,8 @@ class AssetSummary(FlexElement):
     origTransactionID: Optional[str] = None
     relatedTransactionID: Optional[str] = None
     rtn: Optional[str] = None
-    initialInvestment: Optional[decimal.Decimal] = None
+    initialInvestment: Optional[bool] = None
+    positionActionID: Optional[str] = None
 
 
 @dataclass(frozen=True)
@@ -1638,12 +1688,13 @@ class Order(FlexElement):
     origTransactionID: Optional[str] = None
     relatedTransactionID: Optional[str] = None
     rtn: Optional[str] = None
-    initialInvestment: Optional[decimal.Decimal] = None
+    initialInvestment: Optional[bool] = None
     serialNumber: Optional[str] = None
     deliveryType: Optional[str] = None
     commodityType: Optional[str] = None
     fineness: Optional[decimal.Decimal] = None
     weight: Optional[str] = None
+    positionActionID: Optional[str] = None
 
 
 @dataclass(frozen=True)
@@ -1796,7 +1847,7 @@ class OptionEAE(FlexElement):
     origTransactionID: Optional[str] = None
     relatedTransactionID: Optional[str] = None
     rtn: Optional[str] = None
-    initialInvestment: Optional[decimal.Decimal] = None
+    initialInvestment: Optional[bool] = None
     serialNumber: Optional[str] = None
     deliveryType: Optional[str] = None
     commodityType: Optional[str] = None
@@ -2122,7 +2173,12 @@ class Transfer(FlexElement):
     commodityType: Optional[str] = None
     fineness: Optional[decimal.Decimal] = None
     weight: Optional[str] = None
-
+    figi: Optional[str] = None
+    settleDate: Optional[datetime.date] = None
+    issuerCountryCode: Optional[str] = None
+    levelOfDetail: Optional[str] = None
+    positionInstructionID: Optional[str] = None
+    positionInstructionSetID: Optional[str] = None
 
 @dataclass(frozen=True)
 class UnsettledTransfer(FlexElement):
@@ -2245,6 +2301,11 @@ class CorporateAction(FlexElement):
     commodityType: Optional[str] = None
     fineness: Optional[decimal.Decimal] = None
     weight: Optional[str] = None
+    figi: Optional[str] = None
+    issuerCountryCode: Optional[str] = None
+    costBasis: Optional[decimal.Decimal] = None
+    
+
 
 
 @dataclass(frozen=True)
@@ -2480,7 +2541,7 @@ class SecurityInfo(FlexElement):
     origTransactionID: Optional[str] = None
     relatedTransactionID: Optional[str] = None
     rtn: Optional[str] = None
-    initialInvestment: Optional[decimal.Decimal] = None
+    initialInvestment: Optional[bool] = None
     serialNumber: Optional[str] = None
     deliveryType: Optional[str] = None
     commodityType: Optional[str] = None
diff --git a/ibflex/client.py b/ibflex/client.py
index f203e8b..041f53a 100755
--- a/ibflex/client.py
+++ b/ibflex/client.py
@@ -136,8 +136,6 @@ def request_statement(
     """First part of the 2-step download process.
     """
     url = url or REQUEST_URL
-    ### AKE FIX
-    url = 'https://ndcdyn.interactivebrokers.com/portal.flexweb/api/v1/flexQuery'
     response = submit_request(url, token, query=query_id)
     stmt_access = parse_stmt_response(response)
     if isinstance(stmt_access, StatementError):
diff --git a/ibflex/parser.py b/ibflex/parser.py
index af6b270..1bf081a 100755
--- a/ibflex/parser.py
+++ b/ibflex/parser.py
@@ -170,9 +170,11 @@ def parse_element_attr(
 #  INPUT VALUE PREP FUNCTIONS FOR DATA CONVERTERS
 #  These are just implementation details for converters and don't need testing.
 ###############################################################################
-def prep_date(value: str) -> Tuple[int, int, int]:
+def prep_date(value: str) -> Optional[Tuple[int, int, int]]:
     """Returns a tuple of (year, month, day).
     """
+    if value == "MULTI":
+        return None  # Summaries have MULTI as date value.
     date_format = DATE_FORMATS[len(value)][value.count('/')]
     return datetime.datetime.strptime(value, date_format).timetuple()[:3]
 
@@ -184,9 +186,11 @@ def prep_time(value: str) -> Tuple[int, int, int]:
     return datetime.datetime.strptime(value, time_format).timetuple()[3:6]
 
 
-def prep_datetime(value: str) -> Tuple[int, ...]:
+def prep_datetime(value: str) -> Optional[Tuple[int, ...]]:
     """Returns a tuple of (year, month, day, hour, minute, second).
     """
+    if value == "MULTI":
+        return None  # Summaries have MULTI as date value.
     #  HACK - some old data has ", " separator instead of ",".
     value = value.replace(", ", ",")
 
@@ -328,8 +332,8 @@ def optional_convert(value):
 
 convert_string = make_optional(make_converter(str, prep=utils.identity_func))
 convert_int = make_converter(int, prep=utils.identity_func)
-# IB sends "Y"/"N" for True/False
-convert_bool = make_converter(bool, prep=lambda x: {"Y": True, "N": False}[x])
+# IB sends "Y"/"N" or "Yes"/"No" for True/False
+convert_bool = make_converter(bool, prep=lambda x: {"Y": True, "N": False, "Yes": True, "No": False}[x])
 # IB sends numeric data with place delimiters (commas)
 convert_decimal = make_converter(
     decimal.Decimal,
@@ -463,6 +467,7 @@ def convert_enum(Type, value):
     "CNH",           # RMB traded in HK
     "BASE_SUMMARY",  # Fake currency code used in IB NAV/Performance reports
     "",              # Lot element allows blank currency ?!
+    "RUS",           # Russian-related currency code used by IBKR
 )
 
 
diff --git a/tests/test_parser.py b/tests/test_parser.py
index 92fab3f..31fb665 100644
--- a/tests/test_parser.py
+++ b/tests/test_parser.py
@@ -333,9 +333,11 @@ def testConvertInt(self):
             parser.convert_int("")
 
     def testConvertBool(self):
-        """ Legal boolean values are 'Y'/'N' """
+        """ Legal boolean values are 'Y'/'N' or 'Yes'/'No' """
         self.assertEqual(parser.convert_bool("Y"), True)
         self.assertEqual(parser.convert_bool("N"), False)
+        self.assertEqual(parser.convert_bool("Yes"), True)
+        self.assertEqual(parser.convert_bool("No"), False)
 
         #  Empty string raises FlexParserError.
         with self.assertRaises(parser.FlexParserError):
diff --git a/tests/test_types.py b/tests/test_types.py
index bf53cf4..175eaa5 100644
--- a/tests/test_types.py
+++ b/tests/test_types.py
@@ -1985,5 +1985,49 @@ def testParse(self):
         self.assertEqual(instance.tradeID, None)
 
 
+class TradeInitialInvestmentTestCase(unittest.TestCase):
+    """Test case for Trade.initialInvestment as boolean field.
+    
+    Tests the fix for https://github.com/vroonhof/opensteuerauszug/issues/106
+    where initialInvestment="Yes" was causing parsing errors.
+    """
+    data = ET.fromstring(
+        ('<Trade accountId="U123456" currency="USD" assetCategory="STK" '
+         'symbol="TEST" initialInvestment="Yes" quantity="100" />')
+    )
+
+    def testParse(self):
+        instance = parser.parse_data_element(self.data)
+        self.assertIsInstance(instance, Types.Trade)
+        self.assertEqual(instance.accountId, "U123456")
+        self.assertEqual(instance.currency, "USD")
+        self.assertEqual(instance.assetCategory, enums.AssetClass.STOCK)
+        self.assertEqual(instance.symbol, "TEST")
+        self.assertEqual(instance.initialInvestment, True)
+        self.assertEqual(instance.quantity, decimal.Decimal("100"))
+
+
+class EquitySummaryLiteSurchargeAccrualsTestCase(unittest.TestCase):
+    """Test case for EquitySummaryByReportDateInBase.liteSurchargeAccruals field.
+    
+    Tests the fix for https://github.com/vroonhof/opensteuerauszug/issues/106
+    where liteSurchargeAccruals attribute was missing.
+    """
+    data = ET.fromstring(
+        ('<EquitySummaryByReportDateInBase accountId="U123456" '
+         'reportDate="2024-01-01" cash="1000.00" total="1000.00" '
+         'liteSurchargeAccruals="5.50" />')
+    )
+
+    def testParse(self):
+        instance = parser.parse_data_element(self.data)
+        self.assertIsInstance(instance, Types.EquitySummaryByReportDateInBase)
+        self.assertEqual(instance.accountId, "U123456")
+        self.assertEqual(instance.reportDate, datetime.date(2024, 1, 1))
+        self.assertEqual(instance.cash, decimal.Decimal("1000.00"))
+        self.assertEqual(instance.total, decimal.Decimal("1000.00"))
+        self.assertEqual(instance.liteSurchargeAccruals, decimal.Decimal("5.50"))
+
+
 if __name__ == '__main__':
     unittest.main(verbosity=3)