AIP
UPB

Ameritas Investment Partners’s Upstream Bio Inc UPB Stock Holding History

Ameritas Investment 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
Q1 		$24.7K Hold
2,741
– – ﹤0.01% 2503
2025
Q4 		$74.4K Hold
2,741
– – ﹤0.01% 1872
2025
Q3 		$51.6K Sell
2,741
-817
-23% -$12.7K ﹤0.01% 2097
2025
Q2 		$39.1K Buy
3,558
+1,736
+95% +$16K ﹤0.01% 2344
2025
Q1 		$11.2K Hold
1,822
– – ﹤0.01% 2787
2024
Q4 		$30K Buy
+1,822
New +$40.7K ﹤0.01% 2461

Other funds holding UPB

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
O
OrbiMed New York $5.05B AUM 125.28% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
DC
Decheng Capital Menlo Park, California $661M AUM 299.97% 1-Year Est. Return
ES
Enavate Sciences Menlo Park, California $352M AUM 220.14% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
YIH
Y-Intercept (HK) Hong Kong $5.05B AUM 17.89% 1-Year Est. Return
Federated Hermes
Federated Hermes Pittsburgh, Pennsylvania $61.5B AUM 30.7% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Ameritas Investment Partners's UPB Position: Q1 2026 in Review

Ameritas Investment Partners held its Upstream Bio Inc (UPB) position steady in Q1 2026 at 2,741 shares worth $24.7K. The position accounts for ﹤0.01% of the portfolio, ranked #2503.

Ameritas Investment Partners first reported a position in UPB in Q4 2024 and has held it in 6 quarters since. The position peaked at $74.4K in Q4 2025. 140 funds tracked by Wall St. Rank hold UPB as of Q1 2026.

  • Ameritas Investment Partners held 2,741 shares of Upstream Bio Inc worth $24.7K as of Q1 2026.
  • Ameritas Investment Partners left its Upstream Bio Inc share count unchanged in Q1 2026.
  • Upstream Bio Inc made up ﹤0.01% of Ameritas Investment Partners's portfolio in Q1 2026, its #2503 holding.
  • Ameritas Investment Partners first reported a position in Upstream Bio Inc in Q4 2024 and has held it in 6 quarters since.
  • Ameritas Investment Partners's Upstream Bio Inc position peaked at $74.4K in Q4 2025.
  • 140 funds tracked by Wall St. Rank held Upstream Bio Inc as of Q1 2026.

Based on Ameritas Investment Partners's 13F filing for Q1 2026, filed 13 May 2026.