CBOE tweaks electronic S&P options market to spur growth

The biggest US options exchange operator by volume has tweaked its all-electronic S&P 500 options market

CBOE Holdings on Thursday rolled out changes to its new market in electronic stock-index options, which has been slow to grow since its launch last fall.

The Chicago Board Options Exchange parent tweaked the way trades in electronic S&P 500 options are assigned and listed a slate of longer-dated contracts, aiming to lure more investors to a product seen as one of CBOE's biggest growth opportunities.

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