DIAMONDBACK ENERGY INC

Ticker: FANG CUSIP: 25278X109 Class: Com

VIKING GLOBAL INVESTORS LP's Holding History (CIK: 0001103804)

Note: Option positions (PUT/CALL) are excluded.

Q1 2019

Shares 1,137,514 Value ($000) $115,492 Avg Close $79.50 Range $69.70 - $84.50

Q4 2018

Shares 1,515,140 Value ($000) $140,453 Avg Close $86.64 Range $66.08 - $109.08

Q4 2017

Shares 618,923 Value ($000) $78,139 Avg Close $83.84 Range $74.00 - $98.56

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	1,137,514	$115,492	$79.50	$69.70 - $84.50
Q4 2018	1,515,140	$140,453	$86.64	$66.08 - $109.08
Q4 2017	618,923	$78,139	$83.84	$74.00 - $98.56