State of Wisconsin Investment Board’s Spero Therapeutics SPRO Stock Holding History

State of Wisconsin Investment Board’s Portfolio SPRO Stock Details SPRO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2022 Q2	–	Sell	-31,600	Closed	-$275K	–	2869
2022 Q1	$275K	Hold	31,600	–	–	﹤0.01%	2116
2021 Q4	$506K	Buy	+31,600	New	+$502K	﹤0.01%	1685
2021 Q2	–	Sell	-20,700	Closed	-$305K	–	2152
2021 Q1	$305K	Hold	20,700	–	–	﹤0.01%	1872
2020 Q4	$401K	Sell	20,700 -2,600	-11%	-$40.5K	﹤0.01%	1600
2020 Q3	$260K	Buy	+23,300	New	+$276K	﹤0.01%	1872
2020 Q1	–	Sell	-16,500	Closed	-$159K	–	1730
2019 Q4	$159K	Buy	16,500 +437	+3%	+$4.71K	﹤0.01%	1593
2019 Q3	$170K	Buy	16,063 +4,563	+40%	+$48.1K	﹤0.01%	1514
2019 Q2	$132K	Buy	11,500 +300	+3%	+$3.61K	﹤0.01%	1514
2019 Q1	$143K	Buy	+11,200	New	+$119K	﹤0.01%	1485

Other funds holding SPRO

ACM

Aquilo Capital Management San Francisco, California $55.8M AUM 41.76% 1-Year Est. Return

BVF Inc San Francisco, California $3.14B AUM 249.53% 1-Year Est. Return

AVAI

Atlas Venture Associates IX Boston, Massachusetts $11.8M AUM 58.35% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

AVLSA

Atlas Venture Life Science Advisors Cambridge, Massachusetts $790M AUM 223.66% 1-Year Est. Return

Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

Alphabet Inc Mountain View, California $4.02B AUM 215.74% 1-Year Est. Return

RSCM

Rock Springs Capital Management Baltimore, Maryland $1.7B AUM 93.03% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

State of Wisconsin Investment Board's SPRO Position: Q2 2022 in Review

State of Wisconsin Investment Board sold out of Spero Therapeutics (SPRO) in Q2 2022, closing a stake of 31,600 shares — an estimated $275K sold.

State of Wisconsin Investment Board first reported a position in SPRO in Q1 2019 and held it in 9 quarters. The position peaked at $506K in Q4 2021. 79 funds tracked by Wall St. Rank hold SPRO as of Q2 2022.

State of Wisconsin Investment Board reported no remaining Spero Therapeutics position as of Q2 2022 after selling out during the quarter.
State of Wisconsin Investment Board sold 31,600 Spero Therapeutics shares in Q2 2022, an estimated $275K.
State of Wisconsin Investment Board first reported a position in Spero Therapeutics in Q1 2019 and held it in 9 quarters.
State of Wisconsin Investment Board's Spero Therapeutics position peaked at $506K in Q4 2021.
79 funds tracked by Wall St. Rank held Spero Therapeutics as of Q2 2022.

Based on State of Wisconsin Investment Board's 13F filing for Q2 2022, filed 15 Aug 2022.