UPB — Upstream Bio Inc
In 2026 Q2, 3 of the 140 tracked hedge funds reported a position in Upstream Bio Inc (UPB), worth $1.07M combined. Over the quarter 2 opened or added, 1 trimmed or exited.
Hedge fund holders, 2026 Q2
| Fund | Value | Portfolio % | Change |
|---|---|---|---|
| Renaissance | $908.60K | 0.00% | +111.4% |
| Quadrature | $124.48K | 0.00% | NEW |
| Persistent | $33.60K | 0.01% | -11.6% |
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Source: SEC EDGAR 13F filings, reported as of quarter end and filed up to 45 days later. Not investment advice.