
Explanation:
Transaction-based manipulation involves actions that directly affect market prices through trading activities rather than through information dissemination.
Option A is correct because acquiring a dominant position in a derivative to exploit the price of a related underlying is a classic example of transaction-based manipulation. This involves using trading activities to artificially influence prices, which violates market integrity standards.
Option B is incorrect because taking an aggressive investment position with intent to exploit market inefficiencies is generally considered legitimate trading activity, not manipulation. Market participants are allowed to take positions based on their analysis of market inefficiencies.
Option C is incorrect because issuing overly optimistic projections to induce trading is an example of information-based manipulation, not transaction-based manipulation. This involves disseminating false or misleading information rather than directly manipulating prices through trading activities.
Key distinction:
Under CFA Institute Standards of Professional Conduct, both types of manipulation are prohibited, but they represent different methods of market manipulation.
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According to the Standards, transaction-based manipulation includes:
A
acquiring a dominant position in a derivative to exploit the price of a related underlying.
B
taking an aggressive investment position in a security with an intent to exploit market inefficiencies.
C
issuing an overly optimistic projection of a security's value to induce trading by other market participants.