Put the Market Manipulation standard, II(B), into practice
The idea
Members must not engage in practices that distort prices or artificially inflate trading volume with the intent to mislead market participants. Two forms are identified. Information-based manipulation spreads false or misleading information, including pumping a position one intends to sell. Transaction-based manipulation uses trades themselves to create a false impression — wash trading, matched orders, or marking the close to influence a price at which something else is valued. Intent distinguishes manipulation from legitimate trading: a large order that moves a price is not manipulation, and a small one placed to set a mark may be.
A practice question
Which is an example of transaction-based market manipulation?
- Trading with oneself to create apparent volume — correct
- Publishing a research report with an optimistic forecastWhy not: An optimistic view honestly held is analysis. It becomes manipulation only if the claims are false and made to move a price.
- Buying a large position over several daysWhy not: Accumulating a genuine position is ordinary trading, even where it moves the price.
Standard II(B) Market Manipulation covers wash trading, where trades with oneself create activity conveying no real supply or demand. The only purpose is to mislead others about interest in the security.
A harder one
What distinguishes manipulation from legitimate trading that moves a price?
- The size of the orderWhy not: A large genuine order is legitimate and a tiny one placed to set a mark is not, so size does not separate them.
- Whether the trade is executed on an exchangeWhy not: Venue has no bearing on intent, and manipulation can be carried out on or off an exchange.
- The intent to mislead others about price — correct
Standard II(B) turns on intent to mislead about price or volume. Genuine buying moves prices, and that is the market working.
The hardest tier
A manager places a small buy order in an illiquid holding in the final minutes of the quarter, raising its closing price and the reported fund value. Is this manipulation?
- No, because the order was smallWhy not: The size relative to its effect is what reveals the purpose, so smallness is evidence against the manager rather than for them.
- Yes, marking the close is manipulation — correct
- No, provided the trade is disclosed in the quarterly reportWhy not: Disclosure describes what was done and does not make a trade placed to distort a valuation legitimate.
Standard II(B) catches marking the close. The smallness is the point: the trade has no investment purpose and exists to set the valuation, and its effect on reported performance is the intended deception.
In the app: 9 practice questions on this outcome, a narrated walkthrough with diagrams, spaced review that brings it back before you forget it.
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