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UPB —
UPSTREAM BIO INC
CUSIP: 91678A107 · Held by 2 superinvestors · Combined value: $1,081,113
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| # | Investor | % of Portfolio | Value ($) | Shares | Recent Activity | Share Change |
|---|---|---|---|---|---|---|
| 1 | Ken Griffin | 0.0% | $635,853 | 23,420 | REDUCE | -23,780 |
| 2 | Jim Simons | 0.0% | $445,260 | 16,400 | NEW BUY | +16,400 |
| Investor | Activity | Share Change | % Change |
|---|---|---|---|
| Jim Simons | NEW BUY | +16,400 | New |
| Ken Griffin | REDUCE | -23,780 | -50.4% |
| Investor | Activity | Share Change | % Change |
|---|---|---|---|
| Ken Griffin | NEW BUY | +47,200 | New |
Who Owns UPB? Superinvestor Holdings
UPSTREAM BIO INC is held by 2 tracked superinvestors, with a combined position value of $1 million . The largest positions are held by Ken Griffin (0.0% of portfolio), Jim Simons (0.0% of portfolio).
In the most recent quarter, 1 superinvestor added or initiated positions while 1 reduced or exited.