Paul Tudor Jones's UPB Position Overview
Paul Tudor Jones (via Tudor Investment Corp Et Al) currently holds 26,412 shares of Upstream Bio, Inc. (UPB) worth $237,708, representing 0.00% of the portfolio. First purchased in 2026-Q1, this recently established position has been held for 1 quarters.
Based on recent 13F filings, Paul Tudor Jones has initiated a new position in UPB, representing a fresh investment thesis on this company. Insufficient history to summarize additions or reductions.
Analysis based on 13F filings available since 2013 Q2
Paul Tudor Jones's Upstream Bio (UPB) Holding Value Over Time
Track share changes against reported price movement
Quarterly Upstream Bio (UPB) Trades by Paul Tudor Jones
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | +26,412 | New Buy | 26,412 | $9.00 |
Paul Tudor Jones's Upstream Bio Investment FAQs
Paul Tudor Jones first purchased Upstream Bio, Inc. (UPB) in Q1 2026, acquiring 26,412 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Paul Tudor Jones has held Upstream Bio, Inc. (UPB) for 1 quarters since Q1 2026.
Paul Tudor Jones's largest addition to Upstream Bio, Inc. (UPB) was in Q1 2026, adding 26,412 shares worth $237,708.
According to the latest 13F filing for Q1 2026, Paul Tudor Jones's firm, Tudor Investment Corp Et Al, owns 26,412 shares of Upstream Bio, Inc. (UPB), valued at approximately $237,708.
As of the Q1 2026 filing, Upstream Bio, Inc. (UPB) represents approximately 0.00% of Paul Tudor Jones's publicly disclosed stock portfolio, making it one of their key holdings.
Paul Tudor Jones's peak holding in Upstream Bio, Inc. (UPB) was 26,412 shares, as reported at the end of Q1 2026.