UPSTREAM BIO INC (UPB): Institutional Ownership
Hedge funds and institutional managers reporting a position in UPB. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
12
13F filers
Aggregate Value
$11.1M
Across holders
Last Price
$6.75
2026-06-26
Sector
—
GICS
Holder activity5 new5 added1 reduced
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| Qube Research & Technologies Ltd CIK 0001729829 | Hedge Fund | 619K | $5.6M | 50.3% | 0.0% | New | — | Q1 2026 |
| Schonfeld Strategic Advisors LLC CIK 0001665241 | Hedge Fund | 161K | $1.5M | 13.1% | 0.0% | Added | +$410K | Q1 2026 |
| BALYASNY ASSET MANAGEMENT LLC CIK 0001218710 | Hedge Fund | 73K | $1.4M | 12.4% | 0.0% | New | — | Q3 2025 |
| ExodusPoint Capital Management, LP CIK 0001736225 | Hedge Fund | 91K | $823K | 7.4% | 0.0% | Added | +$144K | Q1 2026 |
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 62K | $559K | 5.0% | 0.0% | Added | +$411K | Q1 2026 |
| Verition Fund Management LLC CIK 0001454027 | Hedge Fund | 12K | $326K | 2.9% | 0.0% | New | — | Q4 2025 |
| TWO SIGMA INVESTMENTS, LP CIK 0001179392 | Hedge Fund | 11K | $285K | 2.6% | 0.0% | Unchanged | +$0 | Q4 2025 |
| TUDOR INVESTMENT CORP ET AL CIK 0000923093 | Hedge Fund | 26K | $238K | 2.1% | 0.0% | New | — | Q1 2026 |
| CITADEL ADVISORS LLC CIK 0001423053 | Hedge Fund | 25K | $223K | 2.0% | 0.0% | Added | +$133K | Q1 2026 |
| Man Group plc CIK 0001637460 | Hedge Fund | 21K | $190K | 1.7% | 0.0% | New | — | Q1 2026 |
| MARSHALL WACE, LLP CIK 0001318757 | Hedge Fund | 2K | $20K | 0.2% | 0.0% | Reduced | $-3.1M | Q1 2026 |
| AQR CAPITAL MANAGEMENT LLC CIK 0001167557 | Hedge Fund | 697 | $6K | 0.1% | 0.0% | Added | +$4K | Q1 2026 |
New
Hedge Fund
$5.6M· 50.3% of total· 0.0% port· 619K sh· — QoQ· Q1 2026
Added
Hedge Fund
$1.5M· 13.1% of total· 0.0% port· 161K sh· +$410K QoQ· Q1 2026
New
Hedge Fund
$1.4M· 12.4% of total· 0.0% port· 73K sh· — QoQ· Q3 2025
Added
Hedge Fund
$823K· 7.4% of total· 0.0% port· 91K sh· +$144K QoQ· Q1 2026
Added
Hedge Fund
$559K· 5.0% of total· 0.0% port· 62K sh· +$411K QoQ· Q1 2026
New
Hedge Fund
$326K· 2.9% of total· 0.0% port· 12K sh· — QoQ· Q4 2025
Unchanged
Hedge Fund
$285K· 2.6% of total· 0.0% port· 11K sh· +$0 QoQ· Q4 2025
New
Hedge Fund
$238K· 2.1% of total· 0.0% port· 26K sh· — QoQ· Q1 2026
Added
Hedge Fund
$223K· 2.0% of total· 0.0% port· 25K sh· +$133K QoQ· Q1 2026
New
Hedge Fund
$190K· 1.7% of total· 0.0% port· 21K sh· — QoQ· Q1 2026
Reduced
Hedge Fund
$20K· 0.2% of total· 0.0% port· 2K sh· $-3.1M QoQ· Q1 2026
Added
Hedge Fund
$6K· 0.1% of total· 0.0% port· 697 sh· +$4K QoQ· Q1 2026