SEC Adopts Rule Proposal to Curtail Dark Pool Growth
Traders Magazine Online News, October 21, 2009
Nina Mehta
The Securities and Exchange Commission today proposed a series of rule changes that would restrict communication between dark pools and, the Commission hopes, push more orders onto the displayed markets. The SEC commissioners voted unanimously to adopt the rule proposal, which the industry has anticipated for months.
Mary Schapiro, SEC
Dark pools linked together through the use of actionable, or immediately executable, indications of interest "have access to information about a trade which other investors are denied," SEC Chairman Mary Schapiro said at a Commission open meeting this morning to consider the proposal from the Division of Trading and Markets. She noted that dark pools now represent a "significant source of liquidity in U.S. stocks" and that they risk creating a "two-tiered market that deprives the public of information about stock prices and liquidity."
To limit the growth of dark pools and push more flow back onto the public markets, the SEC proposed lowering the threshold at which quotes must be publicly disseminated to 0.25 percent of the average daily volume in a stock, from the current 5 percent. Dark pools represent close to 10 percent of the industry's trading volume. Today's rule proposal is likely to be open for public comment for 60 to 90 days, before the SEC makes a decision about the proposal.
Dark pools would also have to identify their prints to the consolidated tape in real time, including the name of the dark pool where the trade occurred, unless those prints have a market value of at least $200,000. This exception is meant to protect large size trades, since the disclosure of information about these trades could hurt the interests of those engaged in executing blocks.
This exception makes it likely that Liquidnet, which uses actionable IOIs for some of its trading, would be unaffected by the proposed rules. Pipeline Trading Systems and ITG Inc.'s Posit are unaffected by the proposed changes since they do not use IOIs.
The most significant change proposed by the regulator today involves a shift in what is considered a quotation. The SEC redefined automated messages that include order-like information resembling bids and offers as quotes. This change is significant since shifts in market structure in recent years have led to the fragmentation of dark liquidity. Some industry participants suggest that this fragmented liquidity has been re-consolidated by technology, including algorithms that execute in multiple venues and the use of actionable IOIs that link dark pools to one another.
The SEC, however, isn't buying the argument about IOIs. James Brigagliano, co-acting director of the Division of Trading and Markets, said today that actionable IOIs "function quite similarly to displayed quotations and convey valuable price information, yet are privately transmitted to select market participants."
However, in a surprise move, the SEC did not define actionable quotes. Orders displayed to more than one entity at a time are typically considered quotes when they include information about the symbol, side, size and price. The Commission said it would offer the industry "guidance" that is more descriptive in nature about what constitutes a quote.
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