Cubist Systematic Strategies’s Spero Therapeutics SPRO Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Shares Change %	Capital Flow	Portfolio Weight	Portfolio Position
2025 Q2	$78.7K	Buy	+27,140	New	+$78.7K	﹤0.01%	1317
2022 Q2	–	Sell	-14,144	Closed	-$123K	–	4018
2022 Q1	$123K	Buy	+14,144	New	+$123K	﹤0.01%	3165
2018 Q4	–	Sell	-1,006	Closed	-$11K	–	2248
2018 Q3	$11K	Buy	+1,006	New	+$11K	﹤0.01%	1797