Interactive Data S-4/A Registration of securities issued in business combination transactions (amended)

Exhibit 12.1

Interactive Data Corporation

Computation of Ratio of Earnings to Fixed Charges

(Unaudited)

(in thousands)	Predecessor										Successor						Predecessor		Successor
	2006		2007		2008		2009		January 1 - July 29, 2010		July 30 - December 31, 2010			Combined 2010			March 31, 2010		March 31, 2011
Pre-tax income (loss) from continuing operations	$	150,931	$	184,645	$	217,251	$	209,568	$	40,488	$	(124,614	)	$	(84,126	)	$	44,761	$	(50,193	)
Fixed charges:
Interest Expense		—		—		—		—		—		78,364			78,364			—		41,897
Rentals, primarily equipment		2,179		2,401		2,771		2,828		1,629		1,339			2,968			735		702
Total fixed charges		2,179		2,401		2,771		2,828		1,629		79,703			81,332			735		42,599
Pre-tax income (loss) from continuing operations plus fixed charges	$	153,110	$	187,046	$	220,022	$	212,396	$	42,117	$	(44,911	)	$	(2,794	)	$	45,496	$	(7,594	)
Ratio of earnings to fixed charges		70.27		77.90		79.40		75.10		25.85		—			—			61.90		—
Earnings deficiency (1)											$	124,614		$	84,126				$	50,193

(1) Reflects the amount of additional earnings required to be generated to achieve a ratio of earnings to fixed charges coverage of 1:1 for the period indicated.