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Disclosery

JSPR JASPER THERAPEUTICS INC

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COM NEW (common), issuer CIK 1788028

56 managers (58 13F filers) reported a position in JSPR shares at 2026-03-31, 15,813,260 shares in all. 10 filers opened a position and 9 filers sold out during the quarter.

Managers
56
13F filers
58
New
10
Added
15
Reduced
13
Sold out
9
Shares held by filers
15,813,260

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Velan Capital Investment Management LP2,668,395$2.34M1.46%013F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC1,617,531$1.42M<0.01%+543,74813F-HRTimelineGroup
ACORN CAPITAL ADVISORS, LLC1,411,492$1.24M0.35%-375,00013F-HRTimeline
KINGDON CAPITAL MANAGEMENT, L.L.C.1,352,106$1.18M0.2%new13F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY1,333,420$1.17M<0.01%-636,36513F-HRTimelineGroup
VANGUARD GROUP INCgroup of 3 filers holding1,326,512$1.16MnewTimeline
Rock Springs Capital Management LP1,100,726$964K0.06%013F-HRTimeline
Carlyle Group Inc.in group Carlyle Group Inc.1,066,189$934K0.01%013F-HRTimelineGroup
BOOTHBAY FUND MANAGEMENT, LLC582,751$511K0.01%-211,20313F-HRTimeline
Lion Point Capital, LP465,000$407K2.44%013F-HRTimeline
JACOBS LEVY EQUITY MANAGEMENT, INC322,273$282K<0.01%+267,47313F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC317,677$278K<0.01%+105,82013F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/293,259$257K<0.01%+23213F-HRTimelineGroup
Soleus Capital Management, L.P.276,312$242K0.01%+76,31213F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.242,061$212K<0.01%+5,83713F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC177,500$156K<0.01%-49,68313F-HRTimeline
Knott David M Jr160,789$141K0.08%-20,60013F-HRTimeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC140,000$123K0.01%013F-HRTimelineGroup
Quarry LP131,529$115K0.02%+32,00013F-HRTimeline
UBS Group AGin group UBS Group AG81,117$71.1K<0.01%-45,24413F-HRTimelineGroup
Verdad Advisers, LP73,967$64.8K0.07%new13F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC64,915$56.9K<0.01%-217,01113F-HRTimelineGroup
IEQ CAPITAL, LLC51,428$45.1K<0.01%+1,00013F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP45,656$40.2K<0.01%new13F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP44,699$39.2K<0.01%013F-HRTimelineGroup
NINE MASTS CAPITAL Ltd44,165$38.7K0.01%new13F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.40,850$35.8K<0.01%013F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd39,431$34.5K<0.01%new13F-HRTimelineGroup
DIKER MANAGEMENT LLCin group DIKER MANAGEMENT LLC35,000$30.7K0.03%new13F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP34,576$30.3K<0.01%013F-HRTimelineGroup
SIMPLEX TRADING, LLC29,273$25.6K<0.01%new13F-HRTimeline
READYSTATE ASSET MANAGEMENT LP27,499$24.1K<0.01%-70,94013F-HRTimeline
Engineers Gate Manager LP26,131$22.9K<0.01%+11,87413F-HRTimeline
Ikarian Capital, LLCin group Ikarian Capital, LLC24,093$21.1K<0.01%013F-HRTimelineGroup
PANAGORA ASSET MANAGEMENT INC21,543$18.9K<0.01%+2,18113F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC21,415$18.8K<0.01%+11,05113F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP19,084$17K<0.01%-55,88013F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP18,664$16.4K<0.01%013F-HRTimelineGroup
Jain Global LLC18,022$15.8K<0.01%-25,27913F-HRTimeline
Rehmann Capital Advisory Group15,300$13.4K<0.01%new13F-HRTimeline
Sequent Planning LLC14,900$13.1K<0.01%+2,40013F-HRTimeline
LPL Financial LLC12,250$10.7K<0.01%new13F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…11,149$9.77K<0.01%-93,63813F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…6,305$5.52K<0.01%+5,16413F-HRTimelineGroup
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.3,868$3.39K<0.01%-1,07913F-HRTimelineGroup
GROUP ONE TRADING LLC885$775<0.01%+9713F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\500$438<0.01%013F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN500$438<0.01%-80013F-HR/ATimelineGroup
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/160$139<0.01%013F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS141$124<0.01%013F-HRTimelineGroup
SBI Securities Co., Ltd.65$57<0.01%013F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP50$53<0.01%013F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO9$8<0.01%013F-HR/ATimelineGroup
Optiver Holding B.V.in group Optiver Holding B.V.7$6<0.01%013F-HR/ATimelineGroup
Caitong International Asset Management …1$1<0.01%new13F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA120$00%+4513F-HRTimelineGroupValue filed as zero, left out of ratios.