Tower Research Capital (TRC)’s Alder Biopharmaceuticals ALDR Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2019 Q1	–	Sell	-500	Closed	-$5K	–	4651
2018 Q4	$5K	Buy	500 +405	+426%	+$5.18K	﹤0.01%	2978
2018 Q3	$2K	Sell	95 -7,959	-99%	-$144K	﹤0.01%	3525
2018 Q2	$128K	Buy	+8,054	New	+$122K	0.01%	1287
2018 Q1	–	Sell	-1,958	Closed	-$22K	–	4174
2017 Q4	$22K	Buy	+1,958	New	+$21.9K	﹤0.01%	2005
2017 Q1	–	Sell	-4,227	Closed	-$88K	–	4334
2016 Q4	$88K	Buy	4,227 +4,218	+46,867%	+$110K	0.01%	1046
2016 Q3	$0	Buy	+9	New	+$274	﹤0.01%	4908
2016 Q2	–	Sell	-2,434	Closed	-$60K	–	5295
2016 Q1	$60K	Buy	2,434 +2,122	+680%	+$49.1K	0.01%	691
2015 Q4	$10K	Buy	312 +135	+76%	+$4.57K	﹤0.01%	2187
2015 Q3	$6K	Sell	177 -794	-82%	-$33.8K	﹤0.01%	2720
2015 Q2	$51K	Sell	971 -994	-51%	-$36.2K	﹤0.01%	1359
2015 Q1	$57K	Buy	1,965 +1,232	+168%	+$33.8K	0.01%	1371
2014 Q4	$21K	Buy	+733	New	+$13.2K	﹤0.01%	1578
2014 Q3	–	Sell	-6,058	Closed	-$122K	–	5118
2014 Q2	$122K	Buy	+6,058	New	+$85.3K	0.02%	798