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The latest available lists of "threshold securities," compiled Tuesday by the

New York Stock Exchange

and the


, reveal that a broad range of stocks across a number of industries have been subject to higher-than-normal trade-settlement failures.

Both markets began compiling the data after the implementation of Regulation SHO. The

Securities and Exchange Commission

created the rule with the intention of addressing persistent failures to deliver stock on trade-settlement dates and to target potentially abusive

naked short-selling

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in equity securities.

Stocks are identified as threshold securities after five consecutive days of unusually high delivery failures. While the majority of trades settle on time, according to the SEC, Regulation SHO is meant for situations where the level of fails-to-deliver for a particular stock is so significant that it might affect the market for that security.

(The Web site of the

Securities and Exchange Commission

provides more detailed information on Regulation SHO.)

The following stocks were listed as threshold securities on Sept. 16 by the NYSE and the Nasdaq:

NYSE Threshold Securities

Click here for full list.

Nasdaq Threshold Securities

Click here for full list.

This article was written by a staff member of