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Hedge Funds Tracker

UPB

Upstream Bio, Inc.
Funds Buying17
Funds Selling7
# Funds Holding24
Total Value Held$118.1M

Current Holders

FundSharesValue% of PortfolioAs OfLatest MoveLatest Share Change
OrbiMed Advisors5,693,589$39.4M1%2026-06-30NEW+5,693,589
Norges Bank Investment Management3,768,619$26.1M0%2026-06-30NEW+3,768,619
Millennium Management1,143,775$7.9M0%2026-06-30ADDED+206,452
D. E. Shaw & Co.1,036,044$7.2M0%2026-06-30ADDED+215,564
Qube Research & Technologies978,500$6.8M0%2026-06-30ADDED+359,179
Geode Capital Management931,261$6.4M0%2026-06-30TRIMMED-19,356
AQR Capital Management544,869$3.8M0%2026-06-30ADDED+472,698
Walleye Capital498,490$3.4M0%2026-06-30NEW+498,490
Point72 Asset Management453,011$3.1M0%2026-06-30ADDED+263,343
Arrowstreet Capital357,756$2.5M0%2026-06-30ADDED+172,669
Squarepoint Ops290,904$2.0M0%2026-06-30ADDED+246,278
Voleon Capital Management285,234$2.0M0%2026-06-30NEW+285,234
Charles Schwab Investment Management262,456$1.8M0%2026-06-30ADDED+4,727
Schonfeld Strategic Advisors225,760$1.6M0%2026-06-30ADDED+64,411
Renaissance Technologies131,300$0.9M0%2026-06-30ADDED+69,200
Soros Fund Management46,350$0.8M0%2024-12-31CLOSED-46,350
Marshall Wace66,770$0.6M0%2026-03-31CLOSED-66,770
Man Group73,823$0.5M0%2026-06-30ADDED+52,669
Verition Fund Management12,020$0.3M0%2025-12-31CLOSED-12,020
Two Sigma Investments42,325$0.3M0%2026-06-30NEW+42,325
Victory Capital Management25,866$0.2M0%2026-03-31CLOSED-25,866
Davidson Kempner Capital Management12,500$0.2M0%2024-12-31CLOSED-12,500
Graham Capital Management22,508$0.2M0%2026-06-30NEW+22,508
Citadel Advisors15,000$0.1M0%2026-06-30TRIMMED-63,500

Move History

QuarterFundActionPrev SharesNew SharesValue Change
2026-03-31 → 2026-06-30Renaissance TechnologiesADDED62,100131,300$0.3M
2026-03-31 → 2026-06-30Citadel AdvisorsTRIMMED78,50015,000-$0.6M
2026-03-31 → 2026-06-30Point72 Asset ManagementADDED189,668453,011$1.4M
2026-03-31 → 2026-06-30D. E. Shaw & Co.ADDED820,4801,036,044-$0.2M
2026-03-31 → 2026-06-30Two Sigma InvestmentsNEW042,325$0.3M
2026-03-31 → 2026-06-30Millennium ManagementADDED937,3231,143,775-$0.5M
2026-03-31 → 2026-06-30AQR Capital ManagementADDED72,171544,869$3.1M
2026-03-31 → 2026-06-30Norges Bank Investment ManagementNEW03,768,619$26.1M
2026-03-31 → 2026-06-30Marshall WaceCLOSED66,7700-$0.6M
2026-03-31 → 2026-06-30Arrowstreet CapitalADDED185,087357,756$0.8M
2026-03-31 → 2026-06-30Geode Capital ManagementTRIMMED950,617931,261-$2.1M
2026-03-31 → 2026-06-30Charles Schwab Investment ManagementADDED257,729262,456-$0.5M
2026-03-31 → 2026-06-30Victory Capital ManagementCLOSED25,8660-$0.2M
2026-03-31 → 2026-06-30Walleye CapitalNEW0498,490$3.4M
2026-03-31 → 2026-06-30Squarepoint OpsADDED44,626290,904$1.6M
2026-03-31 → 2026-06-30Schonfeld Strategic AdvisorsADDED161,349225,760$0.1M
2026-03-31 → 2026-06-30Voleon Capital ManagementNEW0285,234$2.0M
2026-03-31 → 2026-06-30Qube Research & TechnologiesADDED619,321978,500$1.2M
2026-03-31 → 2026-06-30Graham Capital ManagementNEW022,508$0.2M
2026-03-31 → 2026-06-30Man GroupADDED21,15473,823$0.3M
2025-12-31 → 2026-03-31Renaissance TechnologiesADDED16,40062,100$0.1M
2025-12-31 → 2026-03-31Citadel AdvisorsADDED23,42078,500$0.1M
2025-12-31 → 2026-03-31Point72 Asset ManagementADDED9,700189,668$1.4M
2025-12-31 → 2026-03-31D. E. Shaw & Co.ADDED27,091820,480$6.6M
2025-12-31 → 2026-03-31Two Sigma InvestmentsCLOSED10,5000-$0.3M
2025-12-31 → 2026-03-31Millennium ManagementADDED517,264937,323-$5.6M
2025-12-31 → 2026-03-31AQR Capital ManagementADDED30,50372,171-$0.2M
2025-12-31 → 2026-03-31Norges Bank Investment ManagementCLOSED2,882,6470-$78.3M
2025-12-31 → 2026-03-31Marshall WaceTRIMMED343,79166,770-$8.7M
2025-12-31 → 2026-03-31Arrowstreet CapitalNEW0185,087$1.7M
2025-12-31 → 2026-03-31Geode Capital ManagementADDED851,908950,617-$14.6M
2025-12-31 → 2026-03-31Charles Schwab Investment ManagementTRIMMED284,931257,729-$5.4M
2025-12-31 → 2026-03-31Victory Capital ManagementNEW025,866$0.2M
2025-12-31 → 2026-03-31Verition Fund ManagementCLOSED12,0200-$0.3M
2025-12-31 → 2026-03-31Squarepoint OpsNEW044,626$0.4M
2025-12-31 → 2026-03-31Schonfeld Strategic AdvisorsADDED115,807161,349-$1.7M
2025-12-31 → 2026-03-31Qube Research & TechnologiesNEW0619,321$5.6M
2025-12-31 → 2026-03-31Graham Capital ManagementCLOSED13,7120-$0.4M
2025-12-31 → 2026-03-31Man GroupNEW021,154$0.2M
2025-09-30 → 2025-12-31Renaissance TechnologiesNEW016,400$0.4M
2025-09-30 → 2025-12-31Citadel AdvisorsTRIMMED47,20023,420-$0.3M
2025-09-30 → 2025-12-31Point72 Asset ManagementNEW09,700$0.3M
2025-09-30 → 2025-12-31D. E. Shaw & Co.NEW027,091$0.7M
2025-09-30 → 2025-12-31Millennium ManagementADDED40,113517,264$13.3M
2025-09-30 → 2025-12-31AQR Capital ManagementADDED29,95430,503$0.3M
2025-09-30 → 2025-12-31Norges Bank Investment ManagementNEW02,882,647$78.3M
2025-09-30 → 2025-12-31Marshall WaceTRIMMED867,999343,791-$7.0M
2025-09-30 → 2025-12-31Geode Capital ManagementADDED817,109851,908$7.8M
2025-09-30 → 2025-12-31Charles Schwab Investment ManagementADDED284,828284,931$2.4M
2025-09-30 → 2025-12-31Verition Fund ManagementTRIMMED47,00112,020-$0.6M
2025-09-30 → 2025-12-31Schonfeld Strategic AdvisorsTRIMMED190,244115,807-$0.4M
2025-09-30 → 2025-12-31Graham Capital ManagementNEW013,712$0.4M
2025-06-30 → 2025-09-30Citadel AdvisorsNEW047,200$0.9M
2025-06-30 → 2025-09-30Two Sigma InvestmentsNEW010,500$0.2M
2025-06-30 → 2025-09-30Millennium ManagementNEW040,113$0.8M
2025-06-30 → 2025-09-30AQR Capital ManagementADDED29,75229,954$0.2M
2025-06-30 → 2025-09-30Norges Bank Investment ManagementCLOSED969,9160-$10.6M
2025-06-30 → 2025-09-30Marshall WaceADDED290,526867,999$13.1M
2025-06-30 → 2025-09-30Geode Capital ManagementADDED646,635817,109$8.3M
2025-06-30 → 2025-09-30Charles Schwab Investment ManagementADDED178,253284,828$3.4M
2025-06-30 → 2025-09-30Verition Fund ManagementADDED33,50547,001$0.5M
2025-06-30 → 2025-09-30Schonfeld Strategic AdvisorsTRIMMED365,790190,244-$0.4M
2025-03-31 → 2025-06-30Two Sigma InvestmentsCLOSED21,7890-$0.1M
2025-03-31 → 2025-06-30Millennium ManagementCLOSED61,7960-$0.4M
2025-03-31 → 2025-06-30AQR Capital ManagementADDED18,82229,752$0.2M
2025-03-31 → 2025-06-30Norges Bank Investment ManagementNEW0969,916$10.6M
2025-03-31 → 2025-06-30Marshall WaceTRIMMED304,963290,526$1.3M
2025-03-31 → 2025-06-30Geode Capital ManagementADDED410,677646,635$4.6M
2025-03-31 → 2025-06-30Charles Schwab Investment ManagementADDED132,173178,253$1.1M
2025-03-31 → 2025-06-30Verition Fund ManagementNEW033,505$0.4M
2025-03-31 → 2025-06-30Walleye CapitalCLOSED10,0000-$0.1M
2025-03-31 → 2025-06-30Schonfeld Strategic AdvisorsADDED177,984365,790$2.9M
2024-12-31 → 2025-03-31Citadel AdvisorsCLOSED180,0000-$3.0M
2024-12-31 → 2025-03-31Soros Fund ManagementCLOSED46,3500-$0.8M
2024-12-31 → 2025-03-31Two Sigma InvestmentsNEW021,789$0.1M
2024-12-31 → 2025-03-31Millennium ManagementNEW061,796$0.4M
2024-12-31 → 2025-03-31AQR Capital ManagementNEW018,822$0.1M
2024-12-31 → 2025-03-31Norges Bank Investment ManagementCLOSED1,000,0000-$16.4M
2024-12-31 → 2025-03-31Davidson Kempner Capital ManagementCLOSED12,5000-$0.2M
2024-12-31 → 2025-03-31Marshall WaceADDED290,734304,963-$2.9M
2024-12-31 → 2025-03-31Geode Capital ManagementADDED363,269410,677-$3.5M
2024-12-31 → 2025-03-31Charles Schwab Investment ManagementTRIMMED135,323132,173-$1.4M
2024-12-31 → 2025-03-31Verition Fund ManagementCLOSED37,3790-$0.6M
2024-12-31 → 2025-03-31Schonfeld Strategic AdvisorsNEW0177,984$1.1M
2024-09-30 → 2024-12-31Citadel AdvisorsNEW0180,000$3.0M
2024-09-30 → 2024-12-31Soros Fund ManagementNEW046,350$0.8M
2024-09-30 → 2024-12-31Norges Bank Investment ManagementNEW01,000,000$16.4M
2024-09-30 → 2024-12-31Davidson Kempner Capital ManagementNEW012,500$0.2M
2024-09-30 → 2024-12-31Marshall WaceNEW0290,734$4.8M
2024-09-30 → 2024-12-31Geode Capital ManagementNEW0363,269$6.0M
2024-09-30 → 2024-12-31Charles Schwab Investment ManagementNEW0135,323$2.2M
2024-09-30 → 2024-12-31OrbiMed AdvisorsNEW05,693,589$93.6M
2024-09-30 → 2024-12-31Verition Fund ManagementNEW037,379$0.6M
2024-09-30 → 2024-12-31Walleye CapitalNEW010,000$0.2M