Quantbot Technologies’s Upstream Bio Inc UPB Stock Holding History

Quantbot Technologies’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	$195K	Buy	28,178 +27,515	+4,150%	+$231K	0.01%	1280
2026 Q1	$5.97K	Buy	+663	New	+$11.9K	﹤0.01%	1569

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

Quantbot Technologies's UPB Position: Q2 2026 in Review

Quantbot Technologies increased its Upstream Bio Inc (UPB) stake by 4,150% in Q2 2026, buying an estimated $231K and bringing the position to 28,178 shares worth $195K. The position accounts for 0.01% of the portfolio, ranked #1280.

Quantbot Technologies first reported a position in UPB in Q1 2026 and has held it in 2 quarters since. 149 funds tracked by Wall St. Rank hold UPB as of Q2 2026.

Quantbot Technologies held 28,178 shares of Upstream Bio Inc worth $195K as of Q2 2026.
Quantbot Technologies bought 27,515 Upstream Bio Inc shares in Q2 2026, an estimated $231K.
Upstream Bio Inc made up 0.01% of Quantbot Technologies's portfolio in Q2 2026, its #1280 holding.
Quantbot Technologies first reported a position in Upstream Bio Inc in Q1 2026 and has held it in 2 quarters since.
149 funds tracked by Wall St. Rank held Upstream Bio Inc as of Q2 2026.

Based on Quantbot Technologies's 13F filing for Q2 2026, filed 12 Aug 2026.