Oberweis Asset Management’s Diamondback Energy FANG Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2019 Q1	–	Sell	-14,005	Closed	-$1.3M	–	207
2018 Q4	$1.3M	Sell	14,005 -2,648	-16%	-$296K	0.29%	61
2018 Q3	$2.25M	Sell	16,653 -25,373	-60%	-$3.24M	0.44%	43
2018 Q2	$5.53M	Sell	42,026 -190	-0.5%	-$23.6K	1.39%	26
2018 Q1	$5.34M	Sell	42,216 -1,589	-4%	-$200K	1.4%	26
2017 Q4	$5.53M	Sell	43,805 -9,540	-18%	-$1.03M	1.29%	28
2017 Q3	$5.23M	Sell	53,345 -430	-0.8%	-$39.6K	1.45%	27
2017 Q2	$4.78M	Sell	53,775 -195	-0.4%	-$18.9K	1.31%	25
2017 Q1	$5.6M	Sell	53,970 -19,900	-27%	-$2.05M	1.65%	20
2016 Q4	$7.46M	Sell	73,870 -450	-0.6%	-$44.9K	2.23%	9
2016 Q3	$7.17M	Sell	74,320 -3,360	-4%	-$309K	2.07%	13
2016 Q2	$7.08M	Sell	77,680 -5,180	-6%	-$448K	2.11%	12
2016 Q1	$6.39M	Buy	82,860 +14,270	+21%	+$1.01M	1.85%	16
2015 Q4	$4.59M	Sell	68,590 -130	-0.2%	-$9.67K	1.29%	27
2015 Q3	$4.44M	Buy	68,720 +45,460	+195%	+$3.09M	1.29%	30
2015 Q2	$1.75M	Buy	23,260 +2,390	+11%	+$190K	0.46%	41
2015 Q1	$1.6M	Sell	20,870 -6,800	-25%	-$472K	0.45%	43
2014 Q4	$1.65M	Buy	27,670 +5,470	+25%	+$348K	0.49%	45
2014 Q3	$1.66M	Buy	22,200 +100	+0.5%	+$8.11K	0.45%	43
2014 Q2	$1.96M	Sell	22,100 -4,900	-18%	-$373K	0.48%	51
2014 Q1	$1.82M	Buy	27,000 +3,300	+14%	+$190K	0.38%	53
2013 Q4	$1.25M	Buy	23,700 +5,000	+27%	+$249K	0.3%	66
2013 Q3	$797K	Sell	18,700 -1,800	-9%	-$73.2K	0.23%	69
2013 Q2	$683K	Buy	+20,500	New	+$621K	0.19%	90