(Adds detail on Nasdaq-listed securities, in fourth paragraph.)

NEW YORK (Dow Jones)–The implementation of a new short-sale restriction on U.S. stock trading that went into effect Monday appears to have gone fairly seamlessly, but some say its early proclivity to be triggered in lower-priced stocks bears watching.

Seventeen securities on the New York Stock Exchange were affected Monday by the new restriction, which says that if a stock falls at least 10% in a single day, short selling will only be allowed on that day and the following day if the price of the sale is above the highest bid …