GSA Capital Partners’s Upstream Bio Inc UPB Stock Holding History

GSA Capital Partners’s Portfolio UPB Stock Details UPB Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$480K	Buy	69,348 +30,116	+77%	+$252K	0.03%	1035
2026 Q1	$353K	Buy	+39,232	New	+$706K	0.02%	1150

Other funds holding UPB

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

OrbiMed New York $5.4B AUM 163.13% 1-Year Est. Return

Norges Bank Oslo, Norway $1T AUM

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Decheng Capital Menlo Park, California $732M AUM 275.56% 1-Year Est. Return

Enavate Sciences Menlo Park, California $345M AUM 134.64% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

GSA Capital Partners's UPB Position: Q2 2026 in Review

GSA Capital Partners increased its Upstream Bio Inc (UPB) stake by 77% in Q2 2026, buying an estimated $252K and bringing the position to 69,348 shares worth $480K. The position accounts for 0.03% of the portfolio, ranked #1035.

GSA Capital Partners first reported a position in UPB in Q1 2026 and has held it in 2 quarters since. 148 funds tracked by Wall St. Rank hold UPB as of Q2 2026.

GSA Capital Partners held 69,348 shares of Upstream Bio Inc worth $480K as of Q2 2026.
GSA Capital Partners bought 30,116 Upstream Bio Inc shares in Q2 2026, an estimated $252K.
Upstream Bio Inc made up 0.03% of GSA Capital Partners's portfolio in Q2 2026, its #1035 holding.
GSA Capital Partners first reported a position in Upstream Bio Inc in Q1 2026 and has held it in 2 quarters since.
148 funds tracked by Wall St. Rank held Upstream Bio Inc as of Q2 2026.

Based on GSA Capital Partners's 13F filing for Q2 2026, filed 6 Aug 2026.