UPSTREAM BIO INC (UPB) Institutional Ownership and Insiders Activity
UPSTREAM BIO INC (UPB) is widely held by institutional investors, with 148 firms reporting positions valued at approximately $348.45M based on SEC Form 13F filings for the quarter ended June 30, 2026.
Fmr Llc is the largest disclosed holder, reporting approximately $56.49M in UPB holdings in its latest filing.
Institutional Holders
148
Total Reported Value
$348.45M
Largest Holder
Fmr Llc
Largest Position
$56.49M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
128
Funds Exiting Positions
0
Top Institutional Owners
View allInvestorReported Balance
- Fmr Llc$56.49M
- Orbimed Advisors Llc$39.40M
- Norges Bank$26.08M
- Blackrock, Inc.$25.97M
- Decheng Capital Llc$18.86M
Related UPB Institutional Insights:
- UPB 13F Institutional Holders
- UPB Superinvestors
- UPB Institutional Ownership Changes
- Healthcare Sector Institutional Ownership
- Healthcare Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Healthcare Stocks By Institutional Investors
- Most Sold Healthcare Stocks By Institutional Investors
- UPB Insider Trading & SEC Form 4 Activity
- UPB Articles
- Top Institutional Investor Stock Rankings