diff --git a/__init__.py b/__init__.py
index b4c75e7..a0ba3c1 100644
--- a/__init__.py
+++ b/__init__.py
@@ -11,6 +11,7 @@ from .line import Line
 from .splitline import SplitLine
 from .assetsetting import AssetSetting
 from .asset import AssetRate
+from .valuestore import ValueStore
 
 
 def register():
@@ -22,4 +23,5 @@ def register():
         SplitLine,
         Reconciliation,
         AssetSetting,
+        ValueStore,
         module='cashbook_investment', type_='model')
diff --git a/book.py b/book.py
index 5e27b4b..814d69e 100644
--- a/book.py
+++ b/book.py
@@ -5,10 +5,12 @@
 
 from trytond.model import fields, SymbolMixin, Index
 from trytond.pool import PoolMeta, Pool
-from trytond.pyson import Eval, Or, Len, Bool, If
+from trytond.pyson import Eval, Or, Bool, If
 from trytond.modules.cashbook.book import STATES2, DEPENDS2
 from trytond.transaction import Transaction
 from trytond.report import Report
+from trytond.exceptions import UserError
+from trytond.i18n import gettext
 from decimal import Decimal
 from datetime import timedelta
 from sql import Literal
@@ -68,12 +70,14 @@ class Book(SymbolMixin, metaclass=PoolMeta):
         string='Quantity', help='Quantity of assets until to date',
         readonly=True, digits=(16, Eval('quantity_digits', 4)),
         states={'invisible': Eval('feature', '') != 'asset'},
-        depends=['quantity_digits', 'feature']), 'get_asset_quantity')
+        depends=['quantity_digits', 'feature']),
+        'get_asset_quantity', searcher='search_asset_quantity')
     quantity_all = fields.Function(fields.Numeric(
         string='Total Quantity', help='Total quantity of all assets',
         readonly=True, digits=(16, Eval('quantity_digits', 4)),
         states={'invisible': Eval('feature', '') != 'asset'},
-        depends=['quantity_digits', 'feature']), 'get_asset_quantity')
+        depends=['quantity_digits', 'feature']),
+        'get_asset_quantity', searcher='search_asset_quantity')
     current_value = fields.Function(fields.Numeric(
         string='Value',
         help='Valuation of the investment based on the current ' +
@@ -81,7 +85,7 @@ class Book(SymbolMixin, metaclass=PoolMeta):
         readonly=True, digits=(16, Eval('currency_digits', 2)),
         states={'invisible': ~Eval('show_performance', False)},
         depends=['currency_digits', 'show_performance']),
-        'get_asset_quantity')
+        'get_asset_quantity', searcher='search_asset_quantity')
     current_value_ref = fields.Function(fields.Numeric(
         string='Value (Ref.)',
         help='Valuation of the investment based on the current stock' +
@@ -92,7 +96,7 @@ class Book(SymbolMixin, metaclass=PoolMeta):
                 ~Eval('show_performance', False),
                 ~Bool(Eval('company_currency', -1)))},
         depends=['currency_digits', 'show_performance', 'company_currency']),
-        'get_asset_quantity')
+        'get_asset_quantity', searcher='search_asset_quantity')
 
     # performance
     diff_amount = fields.Function(fields.Numeric(
@@ -101,14 +105,14 @@ class Book(SymbolMixin, metaclass=PoolMeta):
         readonly=True, digits=(16, Eval('currency_digits', 2)),
         states={'invisible': ~Eval('show_performance', False)},
         depends=['currency_digits', 'show_performance']),
-        'get_asset_quantity')
+        'get_asset_quantity', searcher='search_asset_quantity')
     diff_percent = fields.Function(fields.Numeric(
         string='Percent',
         help='percentage performance since acquisition',
         readonly=True, digits=(16, Eval('currency_digits', 2)),
         states={'invisible': ~Eval('show_performance', False)},
         depends=['currency_digits', 'show_performance']),
-        'get_asset_quantity')
+        'get_asset_quantity', searcher='search_asset_quantity')
     show_performance = fields.Function(fields.Boolean(
         string='Performance', readonly=True), 'on_change_with_show_performance')
     current_rate = fields.Function(fields.Numeric(
@@ -117,13 +121,15 @@ class Book(SymbolMixin, metaclass=PoolMeta):
         'exchange price.',
         readonly=True, digits=(16, Eval('currency_digits', 2)),
         states={'invisible': Eval('feature', '') != 'asset'},
-        depends=['currency_digits', 'feature']), 'get_asset_quantity')
+        depends=['currency_digits', 'feature']),
+        'get_asset_quantity', searcher='search_asset_quantity')
     purchase_amount = fields.Function(fields.Numeric(
         string='Purchase Amount',
         help='Total purchase amount, from shares and fees.',
         readonly=True, digits=(16, Eval('currency_digits', 2)),
         states={'invisible': Eval('feature', '') != 'asset'},
-        depends=['currency_digits', 'feature']), 'get_asset_quantity')
+        depends=['currency_digits', 'feature']),
+        'get_asset_quantity', searcher='search_asset_quantity')
 
     # yield
     yield_dividend_total = fields.Function(fields.Numeric(
@@ -268,6 +274,25 @@ class Book(SymbolMixin, metaclass=PoolMeta):
 
     @classmethod
     def get_yield_data(cls, cashbooks, names):
+        """ get yield data - stored or computed
+        """
+        context = Transaction().context
+
+        result = {x: {y.id: Decimal('0.0') for y in cashbooks} for x in names}
+
+        # return computed values if 'date' is in context
+        query_date = context.get('date', None)
+        if query_date is not None:
+            return cls.get_yield_values(cashbooks, names)
+
+        for cashbook in cashbooks:
+            for value in cashbook.value_store:
+                if value.field_name in names:
+                    result[value.field_name][cashbook.id] = value.numvalue
+        return result
+
+    @classmethod
+    def get_yield_values(cls, cashbooks, names):
         """ collect yield data
         """
         pool = Pool()
@@ -345,7 +370,7 @@ class Book(SymbolMixin, metaclass=PoolMeta):
         (tab_line_yield, query_yield) = Line.get_yield_data_sql()
         context = Transaction().context
 
-        query_date = context.get('qdate', CurrentDate())
+        query_date = context.get('date', CurrentDate())
         query = tab_book.join(
                 tab_line,
                 condition=(tab_book.id == tab_line.cashbook),
@@ -397,7 +422,7 @@ class Book(SymbolMixin, metaclass=PoolMeta):
         return (query, tab_book)
 
     @classmethod
-    def get_asset_quantity(cls, cashbooks, names):
+    def get_asset_quantity_values(cls, cashbooks, names):
         """ get quantities
             field: quantity, quantity_all, current_value,
                 current_value_ref, diff_amount, diff_percent,
@@ -464,8 +489,15 @@ class Book(SymbolMixin, metaclass=PoolMeta):
                         if company_currency is not None else rdata[4]),
                 })
 
-        ids_assetbooks = [x.id for x in cashbooks if x.btype is not None]
-        ids_nonebtypes = [x.id for x in cashbooks if x.btype is None]
+        ids_assetbooks = []
+        ids_nonebtypes = []
+        for x in cashbooks:
+            if x.btype is None:
+                if x.id not in ids_nonebtypes:
+                    ids_nonebtypes.append(x.id)
+            else:
+                if x.id not in ids_assetbooks:
+                    ids_assetbooks.append(x.id)
 
         # get values of asset-cashbooks in 'cashbooks' of type=asset
         if len(ids_assetbooks) > 0:
@@ -562,6 +594,82 @@ class Book(SymbolMixin, metaclass=PoolMeta):
                 result['digits'][id_book] = None
         return {x: result[x] for x in names}
 
+    @classmethod
+    def get_asset_quantity(cls, cashbooks, names):
+        """ get quantities - stored or computed
+        """
+        context = Transaction().context
+
+        result = {x: {y.id: Decimal('0.0') for y in cashbooks} for x in names}
+
+        # return computed values if 'date' is in context
+        query_date = context.get('date', None)
+        if query_date is not None:
+            return cls.get_asset_quantity_values(cashbooks, names)
+
+        for cashbook in cashbooks:
+            for value in cashbook.value_store:
+                if value.field_name in names:
+                    result[value.field_name][cashbook.id] = value.numvalue
+        return result
+
+    @classmethod
+    def search_asset_quantity(cls, name, clause):
+        """ search in stored data
+        """
+        ValueStore = Pool().get('cashbook.values')
+        context = Transaction().context
+
+        query_date = context.get('date', None)
+        if query_date is not None:
+            raise UserError(gettext(
+                'cashbook.msg_nosearch_with_date',
+                fname=name, model=cls.__name__))
+        else:
+            value_query = ValueStore.search([
+                ('field_name', '=', clause[0]),
+                ('numvalue',) + tuple(clause[1:]),
+                ],
+                query=True)
+            return [('value_store', 'in', value_query)]
+
+    @classmethod
+    def valuestore_fields(cls):
+        """ field to update
+        """
+        result = super(Book, cls).valuestore_fields()
+
+        # get_asset_quantity_values
+        result.extend([
+            'quantity', 'quantity_all', 'current_value', 'current_value_ref',
+            'diff_amount', 'diff_percent', 'current_rate', 'purchase_amount',
+            'yield_fee_total', 'yield_dividend_total', 'yield_sales',
+            'yield_fee_12m', 'yield_dividend_12m', 'yield_sales_12m'])
+        return result
+
+    @classmethod
+    def valuestore_update_records(cls, records):
+        """ compute current values of records,
+            store to global storage
+        """
+        ValStore = Pool().get('cashbook.values')
+
+        super(Book, cls).valuestore_update_records(records)
+
+        if records:
+            ValStore.update_values(
+                cls.get_asset_quantity_values(
+                    records, [
+                        'quantity', 'quantity_all', 'current_value',
+                        'current_value_ref', 'diff_amount', 'diff_percent',
+                        'current_rate', 'purchase_amount']))
+            ValStore.update_values(
+                cls.get_yield_values(
+                    records, [
+                        'yield_fee_total', 'yield_dividend_total',
+                        'yield_sales', 'yield_fee_12m', 'yield_dividend_12m',
+                        'yield_sales_12m']))
+
     @fields.depends('id')
     def on_change_with_show_performance(self, name=None):
         """ return True if current or subordered cashbooks
diff --git a/tests/book.py b/tests/book.py
index d3be598..0878bb3 100644
--- a/tests/book.py
+++ b/tests/book.py
@@ -174,6 +174,24 @@ class CbInvTestCase(object):
             self.assertEqual(books[0].diff_amount, Decimal('-5.49'))
             self.assertEqual(books[0].diff_percent, Decimal('-18.74'))
 
+            # searcher
+            self.assertEqual(Book.search_count([
+                ('current_value', '=', Decimal('23.8'))]), 1)
+            self.assertEqual(Book.search_count([
+                ('current_value_ref', '=', Decimal('23.8'))]), 1)
+            self.assertEqual(Book.search_count([
+                ('diff_amount', '=', Decimal('-5.49'))]), 1)
+            self.assertEqual(Book.search_count([
+                ('diff_percent', '=', Decimal('-18.74'))]), 1)
+            self.assertEqual(Book.search_count([
+                ('quantity', '=', Decimal('1.0'))]), 2)
+            self.assertEqual(Book.search_count([
+                ('quantity_all', '=', Decimal('1.0'))]), 2)
+            self.assertEqual(Book.search_count([
+                ('current_rate', '=', Decimal('11.9'))]), 1)
+            self.assertEqual(Book.search_count([
+                ('purchase_amount', '=', Decimal('15.0'))]), 2)
+
             self.assertEqual(len(books[0].childs), 4)
 
             self.assertEqual(
@@ -327,10 +345,11 @@ class CbInvTestCase(object):
 
             # wf --> check
             Line.wfcheck(book.lines)
+            self.prep_valstore_run_worker()
 
             # check quantities at cashbook
             with Transaction().set_context({
-                    'qdate': date(2022, 5, 5)}):
+                    'date': date(2022, 5, 5)}):
                 book2, = Book.browse([book])
                 self.assertEqual(book.asset.rate, Decimal('2.8'))   # usd
                 self.assertEqual(book2.quantity, Decimal('1.453'))
@@ -340,7 +359,7 @@ class CbInvTestCase(object):
                 self.assertEqual(book2.current_value_ref, Decimal('3.87'))
 
             with Transaction().set_context({
-                    'qdate': date(2022, 5, 12)}):
+                    'date': date(2022, 5, 12)}):
                 book2, = Book.browse([book])
                 self.assertEqual(book2.quantity, Decimal('4.753'))
                 self.assertEqual(book2.quantity_all, Decimal('4.753'))
@@ -399,6 +418,17 @@ class CbInvTestCase(object):
                 'Aurum | 1,750.0000 usd/oz | 05/01/2022')
 
             (usd, euro) = self.prep_2nd_currency(company)
+
+            usd.rates[0].date = date(2022, 5, 1)
+            usd.rates[0].save()
+            self.assertEqual(len(usd.rates), 1)
+            self.assertEqual(usd.rates[0].date, date(2022, 5, 1))
+
+            euro.rates[0].date = date(2022, 5, 1)
+            euro.rates[0].save()
+            self.assertEqual(len(euro.rates), 1)
+            self.assertEqual(euro.rates[0].date, date(2022, 5, 1))
+
             self.assertEqual(company.currency.rec_name, 'Euro')
             self.assertEqual(asset.symbol, 'usd/oz')
 
@@ -441,7 +471,7 @@ class CbInvTestCase(object):
 
             # check quantities at cashbook
             with Transaction().set_context({
-                    'qdate': date(2022, 5, 1)}):
+                    'date': date(2022, 5, 1)}):
                 book2, = Book.browse([book])
                 self.assertEqual(book.asset.rate, Decimal('1750.0'))   # usd
                 self.assertEqual(book2.quantity, Decimal('20.0'))
@@ -508,6 +538,16 @@ class CbInvTestCase(object):
                 'Aurum | 1,750.0000 usd/oz | 05/01/2022')
 
             (usd, euro) = self.prep_2nd_currency(company)
+            usd.rates[0].date = date(2022, 5, 1)
+            usd.rates[0].save()
+            self.assertEqual(len(usd.rates), 1)
+            self.assertEqual(usd.rates[0].date, date(2022, 5, 1))
+
+            euro.rates[0].date = date(2022, 5, 1)
+            euro.rates[0].save()
+            self.assertEqual(len(euro.rates), 1)
+            self.assertEqual(euro.rates[0].date, date(2022, 5, 1))
+
             self.assertEqual(company.currency.rec_name, 'Euro')
             self.assertEqual(asset.symbol, 'usd/oz')
             chf, = Currency.create([{
@@ -562,7 +602,7 @@ class CbInvTestCase(object):
 
             # check quantities at cashbook
             with Transaction().set_context({
-                    'qdate': date(2022, 5, 1)}):
+                    'date': date(2022, 5, 1)}):
                 book2, = Book.browse([book])
                 self.assertEqual(book.asset.rate, Decimal('1750.0'))   # usd
                 self.assertEqual(book2.quantity, Decimal('20.0'))
@@ -924,6 +964,7 @@ class CbInvTestCase(object):
 
             # set line to 'checked', this creates the counterpart
             Line.wfcheck(list(book.lines))
+            self.prep_valstore_run_worker()
 
             self.assertEqual(book.rec_name, 'Book 1 | -1.00 usd | Open')
             self.assertEqual(len(book.lines), 1)
@@ -1069,6 +1110,7 @@ class CbInvTestCase(object):
             self.assertEqual(len(book2.lines), 0)
 
             Line.wfcheck(list(book1.lines))
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 book1.rec_name,
@@ -1167,6 +1209,7 @@ class CbInvTestCase(object):
 
             # set line to 'checked', this creates the counterpart
             Line.wfcheck(list(book.lines))
+            self.prep_valstore_run_worker()
 
             self.assertEqual(book.rec_name, 'Book 1 | 1.00 usd | Open')
             self.assertEqual(len(book.lines), 1)
@@ -1314,6 +1357,7 @@ class CbInvTestCase(object):
 
             # set line to 'checked', this creates the counterpart
             Line.wfcheck(list(book.lines))
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 book.rec_name,
@@ -1498,6 +1542,7 @@ class CbInvTestCase(object):
 
             # set line to 'checked', this creates the counterpart
             Line.wfcheck(list(book.lines))
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 book.rec_name,
@@ -1855,6 +1900,7 @@ class CbInvTestCase(object):
             self.assertEqual(len(books[1].lines), 0)
 
             Line.wfcheck([books[0].lines[0]])
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 books[0].rec_name,
@@ -2010,6 +2056,7 @@ class CbInvTestCase(object):
             self.assertEqual(len(books[1].lines), 0)
 
             Line.wfcheck([books[0].lines[0]])
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 books[0].rec_name,
@@ -2192,6 +2239,7 @@ class CbInvTestCase(object):
             self.assertEqual(len(books[1].lines), 0)
 
             Line.wfcheck([books[0].lines[0]])
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 books[0].rec_name,
@@ -2531,6 +2579,7 @@ class CbInvTestCase(object):
             self.assertEqual(len(books[1].lines), 0)
 
             Line.wfcheck([books[0].lines[0]])
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 books[0].rec_name,
@@ -2690,6 +2739,7 @@ class CbInvTestCase(object):
             self.assertEqual(len(books[1].lines), 0)
 
             Line.wfcheck([books[0].lines[0]])
+            self.prep_valstore_run_worker()
 
             self.assertEqual(books[0].rec_name, 'Book Cash | -11.00 usd | Open')
             self.assertEqual(books[0].balance_all, Decimal('-11.0'))
@@ -2882,6 +2932,7 @@ class CbInvTestCase(object):
             self.assertEqual(len(books[1].lines), 0)
 
             Line.wfcheck([books[0].lines[0]])
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 books[0].rec_name,
diff --git a/tests/yieldtest.py b/tests/yieldtest.py
index 5bf99f6..1855c81 100644
--- a/tests/yieldtest.py
+++ b/tests/yieldtest.py
@@ -152,6 +152,7 @@ class YieldTestCase(object):
 
             self.assertEqual(len(lines), 1)
             Line.wfcheck(lines)
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 lines[0].rec_name,
@@ -257,6 +258,7 @@ class YieldTestCase(object):
                 }])
 
             Line.wfcheck(book_cash.lines)
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 book_asset.rec_name,
@@ -366,6 +368,7 @@ class YieldTestCase(object):
                 }])
 
             Line.wfcheck(book_asset.lines)
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 book_asset.rec_name,
@@ -451,6 +454,7 @@ class YieldTestCase(object):
 
             self.assertEqual(len(lines), 1)
             Line.wfcheck(lines)
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 lines[0].rec_name,
@@ -532,6 +536,7 @@ class YieldTestCase(object):
 
             self.assertEqual(len(lines), 1)
             Line.wfcheck(lines)
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 lines[0].rec_name,
@@ -631,6 +636,7 @@ class YieldTestCase(object):
                 }])
 
             Line.wfcheck(book_cash.lines)
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 book_asset.rec_name,
@@ -743,6 +749,7 @@ class YieldTestCase(object):
                 }])
 
             Line.wfcheck(book_asset.lines)
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 book_asset.rec_name,
@@ -879,6 +886,7 @@ class YieldTestCase(object):
                 lines[0].rec_name,
                 '05/02/2022|Exp/Sp|-23.50 usd|all out (1) [-]|-3.0000 u')
             Line.wfcheck(lines)
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 lines[0].rec_name,
@@ -1007,6 +1015,7 @@ class YieldTestCase(object):
 
             self.assertEqual(len(lines), 2)
             Line.wfcheck(lines)
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 lines[0].rec_name,
@@ -1150,6 +1159,7 @@ class YieldTestCase(object):
 
             self.assertEqual(len(lines), 1)
             Line.wfcheck(lines)
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 lines[0].rec_name,
@@ -1301,6 +1311,7 @@ class YieldTestCase(object):
 
             self.assertEqual(len(lines), 3)
             Line.wfcheck(lines)
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 lines[0].rec_name,
@@ -1438,6 +1449,7 @@ class YieldTestCase(object):
 
             self.assertEqual(len(lines), 2)
             Line.wfcheck(lines)
+            self.prep_valstore_run_worker()
 
             self.assertEqual(
                 lines[0].rec_name,
diff --git a/valuestore.py b/valuestore.py
new file mode 100644
index 0000000..5337e8c
--- /dev/null
+++ b/valuestore.py
@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+# This file is part of the cashbook-module from m-ds for Tryton.
+# The COPYRIGHT file at the top level of this repository contains the
+# full copyright notices and license terms.
+
+
+from trytond.pool import PoolMeta
+
+
+class ValueStore(metaclass=PoolMeta):
+    __name__ = 'cashbook.values'
+
+    @classmethod
+    def _maintenance_fields(cls):
+        """ add fields to update job
+        """
+        result = super(ValueStore, cls)._maintenance_fields()
+        result.extend([
+            'quantity', 'current_value', 'current_value_ref',
+            'diff_amount', 'diff_percent', 'current_rate',
+            'purchase_amount', 'yield_fee_total', 'yield_dividend_total',
+            'yield_sales', 'yield_fee_12m', 'yield_dividend_12m',
+            'yield_sales_12m'])
+        return result
+
+# end ValueStore