UPB · Healthcare
UPSTREAM BIO INC
Smart-money confidence
· 1 of 3 sources firing
Bearish — money moving out
No standout activity across the feeds we track.
Hedge funds
20
Congress
No data
Insiders
No data
Cross-source blend of hedge-fund breadth, Congress trades, and insider Form 4s. ·
how the score works
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Not financial advice. Bogen Capital surfaces public SEC filings — you decide what to do with them.
Market cap
$348M
Industry
Biotechnology
Sector
Healthcare
Exchange
NasdaqGS
About UPSTREAM BIO INC
Upstream Bio, Inc., a clinical-stage biotechnology company, develops treatments for inflammatory diseases focusing on severe respiratory disorders. It offers verekitug, which is in Phase 2 trials for the treatment of severe asthma and chronic rhinosinusitis with nasal polyps and chronic obstructive pulmonary disease and in Phase I clinical trial for treating chronic obstructive pulmonary disease. The company was incorporated in 2021 and is headquartered in Waltham, Massachusetts.
Who's behind the signal
Every informed buyer we can see on UPB, across all three feeds.
Hedge funds · 4
D.E. Shaw & Co
New position
Citadel Advisors
New position
Millennium Management (Englander)
Increased +1190%
AQR Capital Management
Unchanged
Congress · 0
No congressional trades on record.
Insiders
No significant Form 4 insider activity in the window.
Not a model pick — but on our radar.
UPSTREAM BIO INC isn't in the top-10 model right now, but 4 tracked investors hold it. Everything below is real signal from public filings — treat this as a watch candidate, not a conviction call.
4
Investors
2
New positions
1
Increasing
0
Decreasing
1
Unchanged
Price History
Loading price data...
Return:
High:
Low:
Who's Holding This Stock
Position sizes and recent activity from tracked institutional investors
Trust weight: 1.0×
% of portfolio
0.0%
Position change
NEW
0.0% of D.E. Shaw & Co's portfolio
Trust weight: 1.0×
% of portfolio
0.0%
Position change
NEW
0.0% of Citadel Advisors's portfolio
Trust weight: 1.0×
% of portfolio
0.0%
Position change
+1190%
0.0% of Millennium Management's portfolio
Trust weight: 1.0×
% of portfolio
0.0%
Position change
—
0.0% of AQR Capital Management's portfolio
Portfolio Allocation
How much of each investor's portfolio is allocated to UPSTREAM BIO INC
⚠ Disclaimer: This page is for informational purposes only. Holdings data from SEC EDGAR 13F filings, delayed up to 135 days. Not a recommendation to buy or sell UPSTREAM BIO INC or any security.
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