CASH, CASH EQUIVALENTS AND INVESTMENTS

Cadence’s cash, cash equivalents and short-term investments at fair value as of September 28, 2013 and December 29, 2012 were as follows:



	As of
	September 28, 2013		December 29, 2012
	(In thousands)
Cash and cash equivalents	$	620,403	$	726,357
Short-term investments	96,019		100,704
Cash, cash equivalents and short-term investments	$	716,422	$	827,061

Cash and Cash Equivalents

Cadence considers all highly liquid investments with original maturities of three months or less on the date of purchase to be cash equivalents. The amortized cost of Cadence’s cash equivalents approximates fair value. The following table summarizes Cadence’s cash and cash equivalents at fair value as of September 28, 2013 and December 29, 2012:



	As of
	September 28, 2013		December 29, 2012
	(In thousands)
Cash and interest bearing deposits	$	143,840	$	160,023
Money market funds	475,563		566,334
Bank certificates of deposit	1,000		—
Total cash and cash equivalents	$	620,403	$	726,357

Short-Term Investments

The following tables summarize Cadence’s short-term investments as of September 28, 2013 and December 29, 2012:



	As of September 28, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
Corporate debt securities	$	36,859	$	33	$	(14	)	$	36,878
Bank certificates of deposit	18,300		13		—			18,313
United States Treasury securities	24,705		34		(1		)	24,738
United States government agency securities	11,215		13		(1		)	11,227
Commercial paper	2,794		3		—			2,797
Marketable debt securities	93,873		96		(16		)	93,953
Marketable equity securities	1,817		249		—			2,066
Total short-term investments	$	95,690	$	345	$	(16	)	$	96,019



	As of December 29, 2012
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
Corporate debt securities	$	31,313	$	57	$	(11	)	$	31,359
Bank certificates of deposit	27,805		21		—			27,826
United States Treasury securities	23,213		26		—			23,239
United States government agency securities	10,245		13		—			10,258
Commercial paper	5,777		6		—			5,783
Marketable debt securities	98,353		123		(11		)	98,465
Marketable equity securities	1,817		422		—			2,239
Total short-term investments	$	100,170	$	545	$	(11	)	$	100,704

As of September 28, 2013, no securities held by Cadence have been in an unrealized loss position for greater than six months.

The amortized cost and estimated fair value of marketable debt securities included in short-term investments as of September 28, 2013, by contractual maturity, are shown in the table below. Actual maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations without penalties.



	Amortized Cost		Fair Value
	(In thousands)
Due in less than one year	$	48,949	$	48,983
Due in one to three years	44,924		44,970
Total marketable debt securities included in short-term investments	$	93,873	$	93,953

Net realized gains from the sale of marketable debt and equity securities during the three and nine months ended September 28, 2013 and September 29, 2012 were as follows:



	Three Months Ended				Nine Months Ended
	September 28, 2013		September 29, 2012		September 28, 2013		September 29, 2012
	(In thousands)				(In thousands)
Gains on sale of marketable debt and equity securities, net	$	1,363	$	8	$	1,339	$	123

Non-Marketable Investments

Cadence’s non-marketable investments generally consist of voting preferred stock or convertible debt of privately held companies and are included in other assets on Cadence’s condensed consolidated balance sheets. If Cadence determines that it has the ability to exercise significant influence over the issuer, which may include considering whether the investments are in-substance common stock, the investment is accounted for using the equity method.

Cadence’s non-marketable investments as of September 28, 2013 and December 29, 2012 were as follows:



	As of
	September 28, 2013		December 29, 2012
	(In thousands)
Cost method	$	3,038	$	3,038
Equity method	3,648		4,249
Total non-marketable investments	$	6,686	$	7,287

Net realized gains on the sale of non-marketable investments during the three and nine months ended September 28, 2013 and September 29, 2012 were as follows:



	Three Months Ended				Nine Months Ended
	September 28, 2013		September 29, 2012		September 28, 2013		September 29, 2012
	(In thousands)				(In thousands)
Gains on sale of non-marketable investments, net	$	6	$	—	$	1,196	$	—