23. CAPITAL STOCK

Changes in the common stock account in millions were as follows:


	Number of
	Shares Issued	Amount
Balance at October 31, 2013	536.4	$	3,524
Stock options and other			151
Balance at October 31, 2014	536.4		3,675
Stock options and other			151
Balance at October 31, 2015	536.4		3,826
Stock options and other			86
Balance at October 31, 2016	536.4	$	3,912

The number of common shares the company is authorized to issue is 1,200 million. The number of authorized preferred shares, none of which has been issued, is nine million.

The Board of Directors at its meeting in December 2013 authorized the repurchase of up to $8,000 million of common stock (91.8 million shares based on the fiscal year end closing common stock price of $87.17 per share). At the end of the fiscal year, this repurchase program had $3,260 million (37.4 million shares at the same price) remaining to be repurchased. Repurchases of the company’s common stock under this plan will be made from time to time, at the company’s discretion, in the open market.

A reconciliation of basic and diluted net income per share attributable to Deere & Company follows in millions, except per share amounts:


	2016		2015		2014
Net income attributable to Deere & Company	$	1,523.9	$	1,940.0	$	3,161.7
Less income allocable to participating securities		.7		.8		1.0
Income allocable to common stock	$	1,523.2	$	1,939.2	$	3,160.7
Average shares outstanding		315.2		333.6		363.0
Basic per share	$	4.83	$	5.81	$	8.71
Average shares outstanding		315.2		333.6		363.0
Effect of dilutive stock options		1.4		2.4		3.1
Total potential shares outstanding		316.6		336.0		366.1
Diluted per share	$	4.81	$	5.77	$	8.63

All stock options outstanding were included in the computation during 2016, 2015 and 2014, except 9.9 million in 2016 and 2.4 million in 2014 that had an antidilutive effect under the treasury stock method.