SignatureFD
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SignatureFD’s Upstream Bio Inc UPB Stock Holding History

SignatureFD’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
Q3 		$1.28K Buy
+242
New +$1.58K ﹤0.01% 3289
2026
Q2 		– Sell
-66
Closed -$594 – 3657
2026
Q1 		$594 Sell
66
-51
-44% -$918 ﹤0.01% 3286
2025
Q4 		$3.18K Buy
117
+66
+129% +$1.64K ﹤0.01% 2837
2025
Q3 		$959 Buy
51
+2
+4% +$31 ﹤0.01% 3101
2025
Q2 		$538 Sell
49
-41
-46% -$379 ﹤0.01% 3095
2025
Q1 		$551 Buy
+90
New +$859 ﹤0.01% 3156

Other funds holding UPB

Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
SEB Asset Management
SEB Asset Management Stockholm $27B AUM
Y-Intercept (HK)
Y-Intercept (HK) Hong Kong $4.52B AUM 6.6% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return
Barclays
Barclays London, United Kingdom $500B AUM 36.84% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $608B AUM 32.77% 1-Year Est. Return
ALPS Advisors
ALPS Advisors Denver, Colorado $21.8B AUM 17.58% 1-Year Est. Return
Simplify Asset Management
Simplify Asset Management Las Vegas, Nevada $6.11B AUM 3.71% 1-Year Est. Return
Russell Investments Group
Russell Investments Group London, United Kingdom $114B AUM 33.83% 1-Year Est. Return
Allspring Global Investments
Allspring Global Investments Charlotte, North Carolina $64.1B AUM 28.9% 1-Year Est. Return

SignatureFD's UPB Position: Q3 2026 in Review

SignatureFD opened a new position in Upstream Bio Inc (UPB) in Q3 2026: 242 shares worth $1.28K. The stake represents ﹤0.01% of the portfolio and ranks #3289 among its holdings. This is a return to the name: SignatureFD previously reported a position in UPB as recently as Q1 2026.

SignatureFD first reported a position in UPB in Q1 2025 and has held it in 6 quarters since. The position peaked at $3.18K in Q4 2025. 38 funds tracked by Wall St. Rank hold UPB as of Q3 2026.

  • SignatureFD held 242 shares of Upstream Bio Inc worth $1.28K as of Q3 2026.
  • Upstream Bio Inc was a new SignatureFD position in Q3 2026.
  • Upstream Bio Inc made up ﹤0.01% of SignatureFD's portfolio in Q3 2026, its #3289 holding.
  • SignatureFD first reported a position in Upstream Bio Inc in Q1 2025 and has held it in 6 quarters since.
  • SignatureFD's Upstream Bio Inc position peaked at $3.18K in Q4 2025.
  • 38 funds tracked by Wall St. Rank held Upstream Bio Inc as of Q3 2026.

Based on SignatureFD's 13F filing for Q3 2026, filed 23 Oct 2026.