Parallel Advisors’s Upstream Bio Inc UPB Stock Holding History

Parallel Advisors’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	–	Sell	-2	Closed	-$18	–	4092
2026 Q1	$18	Hold	2	–	–	﹤0.01%	3818
2025 Q4	$54	Hold	2	–	–	﹤0.01%	3570
2025 Q3	$38	Hold	2	–	–	﹤0.01%	3516
2025 Q2	$22	Buy	+2	New	+$18	﹤0.01%	3512

Other funds holding UPB

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

SAM

SEB Asset Management Stockholm $26.6B AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

YIH

Y-Intercept (HK) Hong Kong $5.05B AUM 17.89% 1-Year Est. Return

Walleye Capital New York $28B AUM 44.22% 1-Year Est. Return

Deutsche Bank Frankfurt Am Main Ge, Germany $344B AUM 42.99% 1-Year Est. Return

Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return

GCP

GSA Capital Partners London, United Kingdom $1.59B AUM 39.81% 1-Year Est. Return

SAM

Simplify Asset Management Las Vegas, Nevada $7.19B AUM 6.88% 1-Year Est. Return

ALPS Advisors Denver, Colorado $21.3B AUM 23.41% 1-Year Est. Return

Parallel Advisors's UPB Position: Q2 2026 in Review

Parallel Advisors sold out of Upstream Bio Inc (UPB) in Q2 2026, closing a stake of 2 shares — an estimated $18 sold.

Parallel Advisors first reported a position in UPB in Q2 2025 and held it in 4 quarters. The position peaked at $54 in Q4 2025. 38 funds tracked by Wall St. Rank hold UPB as of Q2 2026.

Parallel Advisors reported no remaining Upstream Bio Inc position as of Q2 2026 after selling out during the quarter.
Parallel Advisors sold 2 Upstream Bio Inc shares in Q2 2026, an estimated $18.
Parallel Advisors first reported a position in Upstream Bio Inc in Q2 2025 and held it in 4 quarters.
Parallel Advisors's Upstream Bio Inc position peaked at $54 in Q4 2025.
38 funds tracked by Wall St. Rank held Upstream Bio Inc as of Q2 2026.

Based on Parallel Advisors's 13F filing for Q2 2026, filed 5 Aug 2026.