NEW YORK (MarketWatch) — Nasdaq OMX Group Inc. shares cut earlier-session losses, incurred after the exchange operator stopped sending orders to one of NYSE Euronext’s options exchanges, to finish 0.1% lower Friday.

That action resulted after Nasdaq NDAQ, -3.18% said that it declared so-called self-help against the NYSE’s Amex option exchange. Exchanges can declare “self help” when other exchanges are deemed slow in response or if information flow is interrupted. Read more Nasdaq and NYSE options exchange issues.