Acquisition ⊑ Transaction
Company ⊑ LegalPerson
Dealer ⊑ StockBroker
Investor ⊑ Person
LegalPerson ⊑ Person
Offer ⊑ Transaction
PhysicalPerson ⊑ Person
Stock ⊑ FinantialInstrument
StockBroker ⊑ StockExchangeMember
StockExchangeMember ⊑ Person
StockTrader ⊑ StockBroker
Trader ⊑ StockBroker
