EXHIBIT 99.1

SERVISFIRST BANCSHARES, INC.

Announces Results For First Quarter 2014

Birmingham, Ala. – (PR Newswire) – April 21, 2014 – ServisFirst Bancshares, Inc. today announced earnings and operating results for the first quarter of 2014.

FIRST Quarter 2014 Highlights:

First quarter net income of $11.8 million, a 27.4% increase year over year

Diluted earnings per share of $1.52, a 16.0% increase year over year

Nonperforming assets to total assets of 0.53%, well below the levels experienced during 2013, and reflective of strong credit quality and financial strength

Tom Broughton, President and CEO, said “We are pleased to have a strong start for 2014.” Bud Foshee, CFO, stated “Our focus continues to be on attracting new clients to our bank and providing excellent customer service.”

FINANCIAL SUMMARY
(in Thousands except share and per share amounts)

	Q1 2014			Q1 2013			% Change
QUARTERLY OPERATNG RESULTS
Net Income	$	11,756		$	9,251			27	%
Net Income Available to Common Stockholders	$	11,656		$	9,151			27	%
Diluted Earnings Per Share	$	1.52		$	1.31			16	%
Return on Average Assets		1.35	%		1.30	%
Return on Average Common Equity		17.83	%		18.07	%
Diluted Shares Outstanding		7,661,890			7,076,505

BALANCE SHEET
Total Assets	$	3,572,914		$	2,861,758			25	%
Loans		2,937,797			2,462,154			19	%
Noninterest Bearing Demand Deposits		662,834			507,647			31	%
Total Deposits		3,031,041			2,423,534			25	%
Stockholders' Equity		312,283			257,547			21	%

DETAILED FINANCIALS

ServisFirst Bancshares, Inc. reported net income of $11.8 million and net income available to common stockholders of $11.7 million for the quarter ended March 31, 2014, compared to net income of $9.3 million and net income available to common stockholders of $9.2 million for the same quarter in 2013. Basic and diluted earnings per common share were $1.58 and $1.52, respectively, for the first quarter of 2014, compared to $1.44 and $1.31, respectively, for the first quarter of 2013.

Return on average assets was 1.35% and return on average equity was 15.49% for the first quarter of 2014, compared to 1.30% and 15.12%, respectively, for the first quarter of 2013.

Net interest income was $30.8 million for the first quarter of 2014, compared to $30.1 million for the fourth quarter of 2013 and $25.9 million for the first quarter of 2013. The net interest margin in the first quarter of 2014 was 3.80%, a 13 basis point increase from the fourth quarter of 2013 and 4 basis point decrease from the first quarter of 2013. The increase in net interest margin on a linked quarter basis is attributable to a $146.0 million increase in average loans outstanding, resulting in a positive mix change in our balance sheet. Our overall cost of funds was down 2 basis points to 0.55% and average equity was higher by approximately $18.0 million.

Average loans for the first quarter of 2014 were $2.91 billion, an increase of $146.0 million, or 5%, over average loans of $2.76 billion for the fourth quarter of 2013, and an increase of $520.0 million, or 18%, over average loans of $2.39 billion for the first quarter of 2013.

Average total deposits for the first quarter of 2014 were flat at $2.97 billion when compared to the fourth quarter of 2013, and increased $544.0 million, or 22%, over average deposits of $2.43 billion for the first quarter of 2013.

In the first quarter of 2014, we experienced a decrease in nonperforming assets, led by a decrease in other real estate owned. We sold 16 properties during the first quarter of 2014 for total proceeds of $2.9 million. Net credit charge-offs, while higher in the first quarter of 2014 than in the fourth quarter of 2013, remain well below levels we experienced in the first three quarters of 2013. We recorded a $2.3 million provision for loan losses in the first quarter of 2014 compared to $2.4 million in the fourth quarter of 2013 and $4.3 million in the first quarter of 2013. Growth in loans and improving credit quality has resulted in our loan loss reserve as a percent of loans remaining relatively stable, increasing one basis point to 1.08% at March 31, 2014 as compared to 1.07% at December 31, 2013 and two basis points as compared to 1.06% at September 30, 2013. In management’s opinion, the reserve is adequate and was determined by consistent application of ServisFirst Bank’s methodology for calculating its reserve for loan losses.

Noninterest income decreased $622,000 during the first quarter of 2014, or 22%, compared to the first quarter of 2013 primarily the result of a $696,000 decrease in mortgage banking revenue. We also had no securities sales in the first quarter of 2014 compared to $123,000 in securities gains during the first quarter of 2013. Deposit service charges increased by $106,000, or 14%, resulting from higher balances and an increase in the number of accounts and transactions. Increases in the cash surrender value of our life insurance contracts resulted from added investments in contracts during the third quarter of 2013.

Noninterest expense for the first quarter of 2014 increased $2.9 million, or 27%, to $13.7 million from $10.8 million in the first quarter of 2013. This increase consists primarily of a $1.3 million, or 23%, increase in salaries and employee benefits related to new hires to fill positions in our newer markets of Mobile, Alabama and Nashville, Tennessee, a $300,000 increase in equipment and occupancy expense in these markets attributable to such expansion and a non-routine expense of $703,000 resulting from a correction of our accounting for vested stock options previously granted to members of our advisory boards in our Dothan, Huntsville and Montgomery markets. We historically accounted for these options under the provisions of FASB ASC 718-10, Compensation – Stock Compensation, and now have determined to recognize as an expense the fair value of these vested options in accordance with the provisions of the FASB ASC Topic 505-50, Equity-Based Payments to Non-Employees. The change in accounting treatment is a non-cash item and does not impact the Company’s operating activities or cash from operations.

About ServisFirst Bancshares, Inc.

ServisFirst Bancshares, Inc. is a bank holding company based in Birmingham, Alabama. Through its subsidiary ServisFirst Bank, ServisFirst Bancshares, Inc. provides business and personal financial services from locations in Birmingham, Huntsville, Montgomery, Mobile and Dothan, Alabama, Pensacola, Florida and Nashville, Tennessee.

ServisFirst Bancshares, Inc. files periodic reports with the U.S. Securities and Exchange Commission (SEC). Copies of its filings may be obtained through the SEC’s website at www.sec.gov or at www.servisfirstbancshares.com.

Statements in this press release that are not historical facts, including, but not limited to, statements concerning future operations, results or performance, are hereby identified as "forward-looking statements" for the purpose of the safe harbor provided by Section 21E of the Securities Exchange Act of 1934 and Section 27A of the Securities Act of 1933. The words "believe," "expect," "anticipate," "project," “plan,” “intend,” “will,” “would,” “might” and similar expressions often signify forward-looking statements. Such statements involve inherent risks and uncertainties. ServisFirst Bancshares, Inc. cautions that such forward-looking statements, wherever they occur in this press release or in other statements attributable to ServisFirst Bancshares, Inc., are necessarily estimates reflecting the judgment of ServisFirst Bancshares, Inc.’s senior management and involve a number of risks and uncertainties that could cause actual results to differ materially from those suggested by the forward-looking statements. Such forward-looking statements should, therefore, be considered in light of various factors that could affect the accuracy of such forward-looking statements, including: general economic conditions, especially in the credit markets and in the Southeast; the performance of the capital markets; changes in interest rates, yield curves and interest rate spread relationships; changes in accounting and tax principles, policies or guidelines; changes in legislation or regulatory requirements; changes in our loan portfolio and the deposit base; possible changes in laws and regulations and governmental monetary and fiscal policies, including, but not limited to, economic stimulus initiatives; the cost and other effects of legal and administrative cases and similar contingencies; possible changes in the creditworthiness of customers and the possible impairment of the collectability of loans and the value of collateral; the effect of natural disasters, such as hurricanes and tornados, in our geographic markets; and increased competition from both banks and non-bank financial institutions. The foregoing list of factors is not exhaustive. For discussion of these and other risks that may cause actual results to differ from expectations, please refer to “Cautionary Note Regarding Forward-looking Statements” and “Risk Factors” in our most recent Annual Report on Form 10-K and our other SEC filings. If one or more of the factors affecting our forward-looking information and statements proves incorrect, then our actual results, performance or achievements could differ materially from those expressed in, or implied by, forward-looking information and statements contained herein. Accordingly, you should not place undue reliance on any forward-looking statements, which speak only as of the date made. ServisFirst Bancshares, Inc. assumes no obligation to update or revise any forward-looking statements that are made from time to time.

More information about ServisFirst Bancshares, Inc. may be obtained over the Internet at www.servisfirstbancshares.com or by calling (205) 949-0302.

Contact: ServisFirst Bank

Bud Foshee (205) 949-0307

BFoshee@servisfirstbank.com

SELECTED FINANCIAL HIGHLIGHTS (UNAUDITED)

(In thousands except per share data)

	1st Quarter 2014		4th Quarter 2013		3rd Quarter 2013		2nd Quarter 2013		1st Quarter 2013
CONSOLIDATED STATEMENT OF INCOME
Interest income	$	34,279	$	33,725	$	32,499	$	30,692	$	29,165
Interest expense		3,432		3,610		3,534		3,211		3,264
Net interest income		30,847		30,115		28,965		27,481		25,901
Provision for loan losses		2,314		2,356		3,034		3,334		4,284
Net interest income after provision for loan losses		28,533		27,759		25,931		24,147		21,617
Noninterest income		2,175		2,371		2,269		2,573		2,797
Noninterest expense		13,723		12,298		12,067		12,372		10,752
Income before income taxes		16,985		17,832		16,133		14,348		13,662
Provision for income taxes		5,229		5,964		5,321		4,662		4,411
Net income		11,756		11,868		10,812		9,686		9,251
Preferred stock dividends		100		116		100		100		100
Net income available to common stockholders	$	11,656	$	11,752	$	10,712	$	9,586	$	9,151
Earnings per share - basic	$	1.58	$	1.64	$	1.53	$	1.38	$	1.44
Earnings per share - diluted	$	1.52	$	1.58	$	1.46	$	1.33	$	1.31
Average diluted shares outstanding		7,661,890		7,453,117		7,321,911		7,218,442		7,076,505


CONSOLIDATED BALANCE SHEET DATA
Total assets	$	3,572,914		$	3,519,417		$	3,396,153		$	3,140,626		$	2,861,758
Loans		2,937,797			2,858,868			2,731,973			2,590,192			2,462,154
Debt securities		309,475			298,494			289,515			261,578			262,103
Demand deposits		662,834			650,456			635,153			562,196			507,647
Total deposits		3,031,041			3,019,642			2,919,217			2,674,977			2,423,534
Borrowings		19,949			19,940			19,932			19,924			19,916
Stockholders' equity	$	312,283		$	297,192		$	276,300		$	265,189		$	257,547

Shares outstanding		7,524,812			7,350,012			7,076,347			6,974,312			6,897,812
Book value per share	$	36.19		$	35.00		$	33.40		$	32.29		$	31.54
Tangible book value per share (1)	$	36.19		$	35.00		$	33.40		$	32.29		$	31.54

SELECTED FINANCIAL RATIOS
Net interest margin		3.80	%		3.67	%		3.71	%		3.93	%		3.92	%
Return on average assets		1.35	%		1.35	%		1.29	%		1.29	%		1.30	%
Return on average common equity		17.83	%		18.86	%		18.47	%		17.28	%		18.07	%
Efficiency ratio		41.56	%		37.86	%		38.63	%		41.17	%		37.47	%
Noninterest expense to average earning assets		1.66	%		1.48	%		1.65	%		1.74	%		1.60	%
Tangible common equity to total tangible assets (1)		7.62	%		7.31	%		6.96	%		7.17	%		7.60	%

(1) Non-GAAP financial measures. "Tangible book value per share" and "tangible common equity to total tangible assets" are not measures of financial performance recognized by generally accepted accounting principles in the United States, or GAAP; However, because the Company has no intangible assets, there is no reconciliation of these non-GAAP financial measures.

CONSOLIDATED BALANCE SHEETS (UNAUDITED)

(Dollars in thousands)

	March 31, 2014			March 31, 2013			% Change
ASSETS
Cash and due from banks	$	77,542		$	33,970			128	%
Interest-bearing balances due from depository institutions		134,415			11,914			1,028	%
Federal funds sold		10,535			1,545			582	%
Cash and cash equivalents		222,492			47,431			369	%
Available for sale debt securities, at fair value		277,501			229,434			21	%
Held to maturity debt securities (fair value of $33,782 and $33,692 at
March 31, 2014 and 2013, respectively)		31,974			32,669			(2	)%
Restricted equity securities		3,738			3,738			-	%
Mortgage loans held for sale		6,704			15,804			(58	)%
Loans		2,937,797			2,462,154			19	%
Less allowance for loan losses		(31,728	)		(27,679	)		15	%
Loans, net		2,906,069			2,434,475			19	%
Premises and equipment, net		8,015			8,845			(9	)%
Accrued interest and dividends receivable		10,370			9,154			13	%
Deferred tax asset, net		11,935			8,384			42	%
Other real estate owned and repossessed assets		9,752			8,076			21	%
Bank owned life insurance contracts		69,544			57,485			21	%
Other assets		14,820			6,391			132	%
Total assets	$	3,572,914		$	2,861,884			25	%
LIABILITIES AND STOCKHOLDERS' EQUITY
Liabilities:
Deposits:
Noninterest-bearing	$	662,834		$	507,647			31	%
Interest-bearing		2,368,207			1,915,887			24	%
Total deposits		3,031,041			2,423,534			25	%
Federal funds purchased		195,762			153,930			27	%
Other borrowings		19,949			19,916			0	%
Accrued interest payable		2,121			1,154			84	%
Other liabilities		11,758			5,677			107	%
Total liabilities		3,260,631			2,604,211			25	%
Stockholders' equity:
Preferred stock, Series A Senior Non-Cumulative Perpetual, par value $0.001
(liquidation preference $1,000), net of discount; 40,000 shares authorized,
40,000 shares issued and outstanding at March 31, 2014 and 2013		39,958			39,958			-	%
Preferred stock, par value $0.001 per share; 1,000,000 authorized and
Common stock, par value $0.001 per share; 50,000,000 shares authorized;
7,524,812 shares issued and outstanding at March 31, 2014 and
6,897,812 shares issued and outstanding at March 31, 2013		8			7			14	%
Additional paid-in capital		127,218			109,022			17	%
Retained earnings		140,538			101,631			38	%
Accumulated other comprehensive income		4,309			6,929			(38	)%
Noncontrolling interest		252			126			100	%
Total stockholders' equity		312,283			257,673			21	%
Total liabilities and stockholders' equity	$	3,572,914		$	2,861,884			25	%

CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

(In thousands except per share data)

	Three Months Ended March 31,
	2014		2013
Interest income:
Interest and fees on loans	$	32,250	$	27,318
Taxable securities		1,097		948
Nontaxable securities		871		832
Federal funds sold		42		16
Other interest and dividends		19		51
Total interest income		34,279		29,165
Interest expense:
Deposits		3,014		2,713
Borrowed funds		418		551
Total interest expense		3,432		3,264
Net interest income		30,847		25,901
Provision for loan losses		2,314		4,284
Net interest income after provision for loan losses		28,533		21,617
Noninterest income:
Service charges on deposit accounts		868		762
Mortgage banking		284		980
Securities gains		-		123
Increase in cash surrender value life insurance		536		470
Other operating income		487		462
Total noninterest income		2,175		2,797
Noninterest expense:
Salaries and employee benefits		7,697		5,679
Equipment and occupancy expense		1,366		1,111
Professional services		516		461
FDIC and other regulatory assessments		517		432
Other real estate owned expense		487		390
Other operating expenses		3,139		2,679
Total noninterest expenses		13,723		10,752
Income before income taxes		16,985		13,662
Provision for income taxes		5,229		4,411
Net income		11,756		9,251
Dividends on preferred stock		100		100
Net income available to common stockholders	$	11,656	$	9,151
Basic earnings per common share	$	1.58	$	1.44
Diluted earnings per common share	$	1.52	$	1.31

SUMMARY OF LOAN LOSS EXPERIENCE

(Dollars in thousands)

	1st Quarter 2014			4th Quarter 2013			3rd Quarter 2013			2nd Quarter 2013			1st Quarter 2013
Reserve for loan losses:
Beginning balance	$	30,663		$	28,927		$	28,757		$	27,679		$	26,258
Loans charged off:
Commercial financial and agricultural		1,222			95			849			101			887
Real estate - construction		23			557			394			1,888			1,990
Real estate - mortgage:		4			25			1,746			270			-
Consumer		58			38			42			129			1
Total charge off		1,307			715			3,031			2,388			2,878
Recoveries:
Commercial financial and agricultural		45			16			13			31			6
Real estate - construction		8			70			124			95			7
Real estate - mortgage:		4			9			24			3			-
Consumer		1			-			6			3			2
Total recoveries		58			95			167			132			15
Net charge-off		1,249			620			2,864			2,256			2,863
Provision for loan losses		2,314			2,356			3,034			3,334			4,284
Ending balance	$	31,728		$	30,663		$	28,927		$	28,757		$	27,679

Reserve for loan losses to total loans		1.08	%		1.07	%		1.06	%		1.11	%		1.12	%
Reserve for loan losses to total average
loans		1.09	%		1.11	%		1.09	%		1.14	%		1.16	%
Net charge-offs to total average loans		0.17	%		0.09	%		0.43	%		0.36	%		0.49	%
Provision for loan losses to total average
loans		0.32	%		0.34	%		0.46	%		0.53	%		0.73	%
Nonperforming assets:
Nonaccrual loans	$	9,084		$	9,621		$	9,396		$	14,765		$	24,231
Loans 90+ days past due and accruing		110			115			-			259			33
Other real estate owned and
repossessed assets		9,824			12,861			14,258			9,232			8,112
Total	$	19,018		$	22,597		$	23,654		$	24,256		$	32,376

Nonperforming loans to total loans		0.31	%		0.35	%		0.34	%		0.58	%		0.99	%
Nonperforming assets to total assets		0.53	%		0.64	%		0.70	%		0.77	%		1.13	%
Nonperforming assets to earning assets		0.55	%		0.66	%		0.72	%		0.79	%		1.15	%
Reserve for loan losses to nonaccrual loans		349.27	%		318.71	%		307.87	%		194.76	%		114.23	%

Restructured accruing loans	$	9,411		$	9,689		$	6,233		$	9,406		$	9,475

Restructured accruing loans to total loans		0.32	%		0.35	%		0.23	%		0.36	%		0.38	%

CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

(In thousands except per share data)

	1st Quarter 2014			4th Quarter 2013		3rd Quarter 2013		2nd Quarter 2013		1st Quarter 2013
Interest income:
Interest and fees on loans	$	32,250		$	31,618	$	30,475	$	28,874	$	27,318
Taxable securities		1,097			1,052		980		908		948
Nontaxable securities		871			870		858		847		832
Federal funds sold		(64	)		51		44		17		16
Other interest and dividends		125			134		142		46		51
Total interest income		34,279			33,725		32,499		30,692		29,165
Deposits		3,014			3,202		3,131		2,784		2,713
Borrowed funds		418			408		403		427		551
Total interest expense		3,432			3,610		3,534		3,211		3,264
Net interest income		30,847			30,115		28,965		27,481		25,901
Provision for loan losses		2,314			2,356		3,034		3,334		4,284
Net interest income after provision for loan losses		28,533			27,759		25,931		24,147		21,617
Noninterest income:
Service charges on deposit accounts		868			837		823		806		762
Mortgage banking		284			344		402		787		980
Securities gains		-			-		-		8		123
Increase in cash surrender value life insurance		536			548		491		485		470
Other operating income		487			642		553		487		462
Total noninterest income		2,175			2,371		2,269		2,573		2,797
Salaries and employee benefits		7,697			6,541		7,048		7,056		5,679
Equipment and occupancy expense		1,366			1,350		1,272		1,469		1,111
Professional services		516			480		443		425		461
FDIC and other regulatory assessments		517			536		405		426		432
Other real estate owned expense		487			475		357		204		390
Other operating expenses		3,139			2,916		2,542		2,792		2,679
Total noninterest expenses		13,723			12,298		12,067		12,372		10,752
Income before income taxes		16,985			17,832		16,133		14,348		13,662
Provision for income taxes		5,229			5,964		5,321		4,662		4,411
Net income		11,756			11,868		10,812		9,686		9,251
Dividends on preferred stock		100			116		100		100		100
Net income available to common stockholders	$	11,656		$	11,752	$	10,712	$	9,586	$	9,151
Basic earnings per common share	$	1.58		$	1.64	$	1.53	$	1.39	$	1.44
Diluted earnings per common share	$	1.52		$	1.58	$	1.46	$	1.34	$	1.31

AVERAGE BALANCE SHEETS AND NET INTEREST ANALYSIS - UNAUDITED

ON A FULLY TAXABLE-EQUIVALENT BASIS

(Dollars in thousands)

					1st Quarter 2014				4th Quarter 2013				3rd Quarter 2013				2nd Quarter 2013				1st Quarter 2013
					Average Balance		Yield / Rate		Average Balance		Yield / Rate		Average Balance		Yield / Rate		Average Balance		Yield / Rate		Average Balance		Yield / Rate
Assets:
Interest-earning assets:
	Loans, net of unearned income (1)
		Taxable			$	2,892,433	4.52	%	$	2,754,955	4.54	%	$	2,640,444	4.56	%	$	2,519,869	4.58	%	$	2,384,670	4.64	%
		Tax-exempt (2)				14,550	3.34			5,669	4.34			2,483	5.91			2,453	5.72			2,464	5.76
	Mortgage loans held for sale					4,496	2.80			5,956	3.66			12,531	2.66			14,157	2.10			19,322	1.95
	Debt securities:
		Taxable				174,842	2.54			166,027	2.49			152,135	2.56			139,189	2.65			144,407	2.66
		Tax-exempt (2)				122,686	4.13			120,161	4.11			118,001	4.13			115,428	4.22			109,587	4.43
			Total securities (3)			297,528	3.20			286,188	3.17			270,136	3.24			254,617	3.36			253,994	3.42
	Federal funds sold					54,895	0.31			68,710	0.25			62,192	0.28			21,303	0.26			23,522	0.28
	Restricted equity securities					3,738	-			3,738	2.55			3,738	2.65			3,738	2.25			3,954	2.36
	Interest-bearing balances with banks					82,279	0.09			173,521	0.29			161,169	0.29			30,083	0.24			34,704	0.33
	Total interest-earning assets					3,349,919	4.21	%		3,298,737	4.11	%		3,152,693	4.14	%		2,846,220	4.38	%		2,722,630	4.41	%
Non-interest-earning assets:
	Cash and due from banks					56,082				53,062				45,314				42,175				41,437
	Net premises and equipment					8,724				8,944				9,052				9,359				9,241
	Allowance for loan losses,
		accrued interest and
		other assets				85,532				98,586				76,477				75,239				74,223
			Total assets		$	3,500,257			$	3,459,329			$	3,283,536			$	2,972,993			$	2,847,531

Interest-bearing liabilities:
	Interest-bearing deposits:
	Checking				$	478,678	0.27	%	$	472,751	0.27	%	$	432,453	0.28	%	$	415,955	0.28	%	$	413,935	0.28	%
	Savings					25,081	0.27			21,755	0.27			21,602	0.29			21,733	0.28			22,089	0.28
	Money market					1,416,645	0.45			1,420,771	0.47			1,356,197	0.47			1,123,605	0.46			1,074,226	0.46
	Time deposits					412,622	1.10			412,254	1.13			408,600	1.16			402,733	1.19			395,902	1.22
	Federal funds purchased					195,967	0.28			176,967	0.28			168,121	0.28			185,533	0.29			137,183	0.25
	Other borrowings					19,945	5.75			19,936	5.63			19,928	5.63			19,920	5.92			27,441	6.89
	Total interest-bearing liabilities					2,548,938	0.55	%		2,524,434	0.57	%		2,406,901	0.58	%		2,169,479	0.59	%		2,070,776	0.64	%
Non-interest-bearing liabilities:
	Non-interest-bearing
		checking				641,450				640,476				599,379				539,228				523,669
	Other liabilities					4,734				7,226				7,250				1,799				7,708
	Stockholders' equity					300,512				282,549				266,427				255,837				238,290
	Unrealized gains on securities and
		derivatives				4,634				4,644				3,580				6,650				7,088
			Total liabilities and
				stockholders' equity	$	3,500,257			$	3,459,329			$	3,283,536			$	2,972,993			$	2,847,531
Net interest spread							3.67	%			3.54	%			3.56	%			3.79	%			3.77	%
Net interest margin							3.80	%			3.67	%			3.78	%			3.88	%			3.84	%

(1)	Average loans include loans on which the accrual of interest has been discontinued.
(2)	Interest income and yields are presented on a fully taxable equivalent basis using a tax rate of 35%.
(3)	Unrealized gains on available-for-sale debt securities are excluded from the yield calculation.