GAMMA Investing’s Upstream Bio Inc UPB Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q2
$8.05K Buy
1,164
+449
+63% +$3.76K ﹤0.01% 3297
2026
Q1
$6.43K Sell
715
-185
-21% -$3.33K ﹤0.01% 3267
2025
Q4
$24.4K Buy
900
+10
+1% +$249 ﹤0.01% 2495
2025
Q3
$16.7K Buy
890
+197
+28% +$3.06K ﹤0.01% 2608
2025
Q2
$7.61K Buy
693
+100
+17% +$924 ﹤0.01% 2942
2025
Q1
$3.63K Buy
+593
New +$5.66K ﹤0.01% 3212

Other funds holding UPB

GAMMA Investing's UPB Position: Q2 2026 in Review

GAMMA Investing increased its Upstream Bio Inc (UPB) stake by 63% in Q2 2026, buying an estimated $3.76K and bringing the position to 1,164 shares worth $8.05K. The position accounts for ﹤0.01% of the portfolio, ranked #3297.

GAMMA Investing first reported a position in UPB in Q1 2025 and has held it in 6 quarters since. The position peaked at $24.4K in Q4 2025. 12 funds tracked by Wall St. Rank hold UPB as of Q2 2026.

  • GAMMA Investing held 1,164 shares of Upstream Bio Inc worth $8.05K as of Q2 2026.
  • GAMMA Investing bought 449 Upstream Bio Inc shares in Q2 2026, an estimated $3.76K.
  • Upstream Bio Inc made up ﹤0.01% of GAMMA Investing's portfolio in Q2 2026, its #3297 holding.
  • GAMMA Investing first reported a position in Upstream Bio Inc in Q1 2025 and has held it in 6 quarters since.
  • GAMMA Investing's Upstream Bio Inc position peaked at $24.4K in Q4 2025.
  • 12 funds tracked by Wall St. Rank held Upstream Bio Inc as of Q2 2026.

Based on GAMMA Investing's 13F filing for Q2 2026, filed 7 Jul 2026.