TIAA CREF Investment Management’s Spark Therapeutics, Inc. Common Stock ONCE Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2019 Q1	$6.81M	Sell	59,811 -1,497	-2%	-$110K	﹤0.01%	1261
2018 Q4	$2.4M	Sell	61,308 -1,413	-2%	-$61.3K	﹤0.01%	1847
2018 Q3	$3.42M	Sell	62,721 -6,064	-9%	-$415K	﹤0.01%	1834
2018 Q2	$5.69M	Buy	68,785 +4,720	+7%	+$364K	﹤0.01%	1508
2018 Q1	$4.27M	Sell	64,065 -10,787	-14%	-$623K	﹤0.01%	1660
2017 Q4	$3.85M	Sell	74,852 -4,105	-5%	-$295K	﹤0.01%	1766
2017 Q3	$7.04M	Buy	78,957 +16,477	+26%	+$1.25M	﹤0.01%	1402
2017 Q2	$3.73M	Buy	62,480 +10,544	+20%	+$589K	﹤0.01%	1783
2017 Q1	$2.77M	Sell	51,936 -3,340	-6%	-$198K	﹤0.01%	1942
2016 Q4	$2.76M	Sell	55,276 -1,308	-2%	-$70.1K	﹤0.01%	2003
2016 Q3	$3.4K	Buy	56,584 +4,370	+8%	+$252K	﹤0.01%	1855
2016 Q2	$2.67M	Buy	52,214 +25,086	+92%	+$1.07M	﹤0.01%	1948
2016 Q1	$801K	Sell	27,128 -24,870	-48%	-$784K	﹤0.01%	2597
2015 Q4	$2.36M	Buy	51,998 +14,010	+37%	+$734K	﹤0.01%	2045
2015 Q3	$1.58M	Sell	37,988 -39,207	-51%	-$2.05M	﹤0.01%	2285
2015 Q2	$4.65M	Buy	77,195 +64,234	+496%	+$4.25M	﹤0.01%	1735
2015 Q1	$1M	Buy	+12,961	New	+$746K	﹤0.01%	2620