UPDATE 2-Nasdaq to cancel early trades in seven stocks

* Some trades in first five minutes of trade canceled

* Nasdaq says market participant made trading errors (Adds Nasdaq explanation)

NEW YORK, Feb 13 (Reuters) - The Nasdaq Stock Market will cancel some early trades in seven securities after an investigation found trading errors at another venue, market operator Nasdaq OMX Group Inc (NDAQ.O) said on Friday.

The securities affected are: Oshkosh Corp (OSK.N), Pepsi Bottling Group Inc (PBG.N), Provident Financial Services Inc (PFS.N) Oneok Inc (OKE.N), Newpark Resources Inc (NR.N), Liberty Property Trust (LRY.N) and Vanguard Consumer Discretionary ETF (VCR.P).

Nasdaq, the second-biggest U.S. stock market, said it will cancel all trades between 9.30 a.m. and 9.35 a.m. (1430-1435 GMT) -- the first five minutes of trading -- that were more than 10 percent away from the Thursday closing prices of the seven securities.

The decision cannot be appealed, it said.

Earlier in the trading day, Nasdaq said its MarketWatch regulation team was "investigating potentially erroneous transactions" and that market "participants should review their trading activity."

A Nasdaq spokesman told Reuters "a market participant made trading errors in those securities this morning on another market center."

He did not say which participant or which market center was involved.

Most of the securities are listed on the New York Stock Exchange. An equity can trade on any venue provided buyers and sellers agree on a price. (Reporting by Jonathan Spicer; Editing by Tim Dobbyn and Andre Grenon)