2. instruments for the payment of money (or evidencing title/equity) – with or without some collateral obligation – and which are commonly dealt in for the purpose of financing/investment.
3. protection, safety; the instrument of protection/safety;
4. a person who becomes the surety for another.
• in a common enterprise;
• with an expectation of profits (which come solely from the efforts of others)
see generally Securities; Securities Acts.