http://finance.yahoo.com/news/edited-transcript-mktx-earnings-conference-174424294.html
"...
Fourth-quarter trading volumes matched the record levels of the second quarter and were up 35% year over year. Quarterly average daily volume records were set in US high-grade, emerging markets, and Eurobonds. This is an extraordinary outcome, given the normal seasonal factors impacting the quarter. A combination of strong market volume growth post the US election and continued gains in market share contributed to the results.
On the back of the growth in trading volumes, revenues for the quarter were $94.4 million, up 23%. Pretax income of $50 million was up 36% and EPS equaled our record quarter at $0.88 per share.
Based on our estimates of market volumes during the quarter, combined aggregate market share of our core products, including high-grade, high-yield, emerging markets, and euros, reached a new record high during the quarter and was up a full 2 percentage points from year-ago levels..."