SHARE-BASED COMPENSATION (Tables)

The impact of share-based compensation expense on our results was as follows:



	Year Ended October 31,
	2018		2017		2016
	(in millions)
Cost of products and services	$	11	$	11	$	11
Research and development	10		9		8
Selling, general and administrative	38		36		30
Total share-based compensation expense	$	59	$	56	$	49

The following assumptions were used to estimate the fair value of TSR-based performance awards.



	Year Ended October 31,
	2018	2017	2016
Volatility of Keysight shares	25%	27%	25%
Volatility of index/peer group	14%	15%	14%-54%
Price-wise correlation with selected peers	57%	57%	38%

The following table summarizes 2018 activity related to stock option awarded to our employees and directors:



	Options Outstanding		Weighted Average Exercise Price
	(in thousands)
Outstanding at October 31, 2017	2,354		$	27
Granted	—		$	—
Exercised	(1,048	)	$	26
Forfeited and expired	—		$	—
Outstanding at October 31, 2018	1,306		$	27

There were no forfeited or expired options in 2018.

The options outstanding and exercisable at October 31, 2018 were as follows:



	Options Outstanding						Options Exercisable
Range of Exercise Prices	Number Outstanding	Weighted Average Remaining Contractual Life	Weighted Average Exercise Price		Aggregate Intrinsic Value		Number Exercisable	Weighted Average Remaining Contractual Life	Weighted Average Exercise Price		Aggregate Intrinsic Value
	(in thousands)	(in years)			(in thousands)		(in thousands)	(in years)			(in thousands)
$0 - 25	415	3.1	$	20	$	15,505	415	3.1	$	20	$	15,505
$25.01 - 30	288	5.1	$	30	7,836		288	5.1	$	30	7,836
$30.01 - 40	603	6.0	$	31	15,740		363	6.0	$	31	9,476
	1,306	4.9	$	27	$	39,081	1,066	4.6	$	26	$	32,817

The following table summarizes the aggregate intrinsic value of options exercised in 2018, 2017 and 2016:



	Aggregate Intrinsic Value		Weighted Average Exercise Price
	(in thousands)
Options exercised in fiscal 2016	$	5,656	$	19
Options exercised in fiscal 2017	$	16,385	$	20
Options exercised in fiscal 2018	$	28,985	$	26

The following table summarizes non-vested award activity in 2018 primarily for our LTP Program and restricted stock unit awards:



	Shares		Weighted Average Grant Date Fair Value
	(in thousands)
Non-vested at October 31, 2017	3,640		$	33
Granted	1,335		$	46
Vested	(1,354	)	$	33
Forfeited	(155	)	$	38
LTP Program decremental	(107	)	$	31
Non-vested at October 31, 2018	3,359		$	36