JSPR · Jasper Therapeutics, Inc. · Holdings

$0.54 +0.02 (+3.84%)

Market Cap

$17.27M

33.27M

Volume · Oct 28 371.16K Avg daily vol (3M) 495.2K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP → See every holder of JSPR: 13F, 13D and 13G, insiders and funds →

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.

Quarter:

Holders: 55

Total Value: $5,385,575

Total Shares: 15,336,216

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 54 13F filers

Top Holder

20.9%

of institutional value

Top 5

60.6%

of institutional value

Top 10

83.4%

of institutional value

HHI

979

Broadly held

Who Holds JSPR

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 52 filers, like-for-like change -20.4%; actively managed books -15.4%; index-like books -44.0%.

Holder type	Share	Filers	Change	New	Exited
Registered adviser	69.7%	23	-13.7%	1	6
Exempt adviser	0.2%	1	-62.5%	1	2
Adviser	0.0%	1	-95.1%	0	0
Bank	15.6%	8	-11.2%	0	2
Broker-dealer	0.2%	2	+145.0%	0	0
Non-US	0.1%	3	+5123.8%	1	0
Holding company	1.4%	3	-86.6%	0	0
Benefit plan	0.0%	0	—	0	0
Insurer	0.0%	0	—	0	0
Unknown	12.7%	11	-19.4%	1	5

Style	Share	Filers	Change	New	Exited
Index-like	12.3%	7	-44.0%	0	0
Systematic-like	10.2%	8	-42.5%	1	0
Concentrated	35.0%	7	-3.3%	0	4
Diversified active	42.5%	30	-14.5%	3	11
Not measured	0.0%	0	—	0	0
Unknown	0.0%	0	—	0	0

Turnover	Share	Filers	Change	New	Exited
Low turnover	28.2%	19	-31.2%	1	4
Medium turnover	40.4%	14	-5.3%	2	3
High turnover	22.5%	17	-30.8%	1	6
Unknown	8.8%	2	-5.6%	0	2
Not measured	0.0%	0	—	0	0

Holding horizon	Share	Filers	Change	New	Exited
Short horizon	14.6%	7	+21.8%	0	4
Medium horizon	50.0%	13	-6.1%	1	3
Long horizon	31.2%	26	-40.4%	2	7
Unknown	4.2%	6	-48.5%	1	1
Not measured	0.0%	0	—	0	0

13F book size	Share	Filers	Change	New	Exited
Under $1B	40.9%	10	-3.9%	1	3
$1B to $10B	17.1%	15	-11.6%	0	3
$10B to $100B	25.2%	9	-8.5%	2	4
$100B or more	16.9%	18	-53.4%	1	5
Not measured	0.0%	0	—	0	0

Client base	Share	Filers	Change	New	Exited
Individuals and high net worth	0.5%	6	-32.0%	1	0
Pooled investment vehicles	59.6%	15	-11.8%	0	3
Registered funds and BDCs	9.6%	2	-4.8%	0	1
Governments and sovereign funds	0.0%	0	-100.0%	0	1
Diversified	0.0%	0	-100.0%	0	1
Pension and profit sharing plans	0.0%	0	—	0	0
Insurance companies	0.0%	0	—	0	0
Other investment advisers	0.0%	0	—	0	0
Corporations	0.0%	0	—	0	0
Unknown	30.3%	29	-32.5%	3	9

Private funds	Share	Filers	Change	New	Exited
Hedge funds	35.2%	15	-23.2%	1	6
Private equity funds	24.9%	2	0.0%	0	0
No private funds	9.9%	6	-6.1%	0	1
Real estate funds	0.0%	1	new	1	0
Other private funds	0.0%	0	-100.0%	0	1
Venture capital funds	0.0%	0	—	0	0
Private funds, type not stated	0.0%	0	—	0	0
Securitized asset funds	0.0%	0	—	0	0
Unknown	30.0%	28	-32.1%	2	7

Location	Share	Filers	Change	New	Exited
United States	81.1%	43	-26.0%	3	12
Outside the US	18.9%	9	+17.9%	1	3

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Conviction and Crowding

45 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders

0.000% of filers hold it in their top 10

Mar 31, 2026: 0

Holders above 5%

median weight 0.000%

Mar 31, 2026: 0

Crowding

30.5%

of shares outstanding, 82nd percentile

Mar 31, 2026: 37.0%

Private-fund advisers

29.3%

of shares outstanding

Institutional ownership

42.9%

43.4% of the estimated free float

Top 10 holders

87.9%

of 13F shares, Herfindahl 0.109

Active holders

-18.9%

like-for-like share change of active filers

5% stakes on record

1 13D, 3 13G (1 institutional, 2 passive, 0 exempt)

How long holders have held it value-weighted 9.1 quarters

Under 1 year 31.7% 1 to 3 years 34.1% 3 years or more 34.2% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost

$1.96

estimated per share

Mar 31, 2026: $2.26

Quarter-end price

$0.42

implied by 13F values

Estimated gain or loss

-78.5%

price against the estimated cost

Estimated at a loss

100.0%

of costed 13F value

Estimated cost covers 40.1% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies JSPR's active holders also own, quarter ended Jun 30, 2026

#	Company	Shared holders	Similarity
1	SNDX Syndax Pharmaceuticals Inc	3	0.177

Shareholder Targets

13F filers that own its peers but not JSPR, quarter ended Jun 30, 2026

Found through its holder-overlap peers: SNDX. 208 filers in all.

#	Filer	In peers	Of book	Largest peers
1	Kynam Capital Management, LP Registered adviser, Concentrated	$175,993,963 1 held	9.73%	SNDX
2	GOLDMAN SACHS GROUP INC Holding company, Index-like	$128,127,252 1 held	0.010%	SNDX
3	DEERFIELD MANAGEMENT COMPANY, L.P. Registered adviser, Concentrated	$82,628,614 1 held	1.03%	SNDX
4	Eversept Partners, LP Registered adviser, Diversified active	$61,168,870 1 held	3.33%	SNDX
5	Hood River Capital Management LLC Registered adviser, Diversified active	$56,055,138 1 held	0.410%	SNDX
6	FRANKLIN RESOURCES INC Adviser, Diversified active	$49,982,867 1 held	0.010%	SNDX
7	VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser, Diversified active	$42,010,460 1 held	0.000%	SNDX
8	Elmind Capital, LP Registered adviser, Concentrated	$40,550,300 1 held	10.2%	SNDX
9	BNP PARIBAS ASSET MANAGEMENT Holding S.A. Non-US, Diversified active	$39,133,180 1 held	0.040%	SNDX
10	Candriam S.C.A. Registered adviser, Diversified active	$37,075,434 1 held	0.170%	SNDX

Fund Ownership of JSPR by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 4.26% of shares outstanding.

Fund type	Of shares outstanding	Change	Shares	Funds
Index funds	0.82%	+0.04 pp	273,614	6
Index ETFs	3.44%	-0.21 pp	1,145,423	2
Active ETFs	0.00%	0.00 pp	0	0
Active funds	0.00%	-0.03 pp	0	0
Unclassified	0.00%	0.00 pp	0	0
All registered funds	4.26%	-0.20 pp	1,419,037	8

How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Holder type: Registered adviser 24 Exempt adviser 1 Adviser 1 Bank 8 Broker-dealer 2 Non-US 3 Holding company 3 Unknown 13

Showing 58 of 58

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

Velan Capital Investment Management LP

$1,123,394

20.86%

2,668,395

ACORN CAPITAL ADVISORS, LLC

$605,464

11.24%

1,438,159

KINGDON CAPITAL MANAGEMENT, L.L.C.

$569,236

10.57%

1,352,106

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1 joint	1,352,106	$569,236	100.0%	Defined

VANGUARD CAPITAL MANAGEMENT LLC

$493,420

9.16%

1,172,021

Rock Springs Capital Management LP

$463,405

8.60%

1,100,726

Carlyle Group Inc.

$448,865

8.33%

1,066,189

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Abingworth LLP	1,066,189	$448,865	100.0%	Defined

GSA CAPITAL PARTNERS LLP

$225,107

4.18%

534,697

MILLENNIUM MANAGEMENT LLC

$204,998

3.81%

486,933

Lion Point Capital, LP

$195,765

3.63%

465,000

BOOTHBAY FUND MANAGEMENT, LLC JSPRW

$150,485

2.79%

357,447

GEODE CAPITAL MANAGEMENT, LLC

$111,063

2.06%

263,808

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	51,905	$21,852	19.7%	Defined
Held directly	211,903	$89,211	80.3%	Defined

RENAISSANCE TECHNOLOGIES LLC

$100,155

1.86%

237,900

CITADEL ADVISORS LLC

$86,726

1.61%

206,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	206,000	$86,726	100.0%	Defined

BlackRock, Inc.

$71,412

1.33%

169,627

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BlackRock Institutional Trust Company, N.A.	169,627	$71,412	100.0%	Sole

VANGUARD FIDUCIARY TRUST CO

$63,126

1.17%

149,943

ADAR1 Capital Management, LLC

$58,940

1.09%

140,000

Quarry LP

$55,373

1.03%

131,529

JANE STREET GROUP, LLC

$42,833

0.80%

101,743

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	50,696	$21,343	49.8%	Defined
Jane Street Global Trading, LLC	51,047	$21,490	50.2%	Defined

JANE STREET GROUP, LLC

$35,195

0.65%

83,600

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	83,600	$35,195	100.0%	Defined

TORONTO DOMINION BANK JSPRW

$30,446

0.57%

2,174,682

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
TD SECURITIES (USA) LLC	2,174,682	$30,446	100.0%	Defined

UBS Group AG

$24,737

0.46%

58,759

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	38,414	$16,172	65.4%	Defined
UBS Switzerland AG	20,345	$8,565	34.6%	Defined

Jain Global LLC

$21,548

0.40%

51,185

OSAIC HOLDINGS, INC.

$19,302

0.36%

45,850

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	5,000	$2,105	10.9%	Defined
Osaic Advisory Services, LLC	40,850	$17,197	89.1%	Defined

STATE STREET CORP

$18,818

0.35%

44,699

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS TRUST COMPANY	44,699	$18,818	100.0%	Defined

NORTHERN TRUST CORP

$17,632

0.33%

41,882

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	41,882	$17,632	100.0%	Defined

DIKER MANAGEMENT LLC

$14,735

0.27%

35,000

DekaBank Deutsche Girozentrale

$14,500

0.27%

25,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Deka Vermoegensmanagement GmbH	25,000	$14,500	100.0%	Defined

Qube Research & Technologies Ltd

$14,196

0.26%

33,722

XTX Topco Ltd

$14,063

0.26%

33,406

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	33,406	$14,063	100.0%	Defined

SIMPLEX TRADING, LLC

$12,036

0.22%

28,591

Ikarian Capital, LLC

$10,143

0.19%

24,093

CITADEL ADVISORS LLC

$9,430

0.18%

22,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	22,400	$9,430	100.0%	Defined

GROUP ONE TRADING LLC

$8,390

0.16%

19,930

Rehmann Capital Advisory Group

$6,441

0.12%

15,300

Sequent Planning LLC

$6,272

0.12%

14,900

BANK OF AMERICA CORP /DE/

$5,974

0.11%

14,192

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	14,192	$5,974	100.0%	Defined

IEQ CAPITAL, LLC

$5,699

0.11%

13,538

Engineers Gate Manager LP

$5,468

0.10%

12,989

LPL Financial LLC

$5,157

0.10%

12,250

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$4,336

0.08%

10,300

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	10,300	$4,336	100.0%	Other

Tower Research Capital LLC (TRC)

$3,930

0.07%

9,336

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	9,336	$3,930	100.0%	Defined

TENOR CAPITAL MANAGEMENT Co., L.P. JSPRW

$3,375

0.06%

250,000

Walleye Capital LLC JSPRW

$2,700

0.05%

200,000

MORGAN STANLEY

$725

0.01%

1,724

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	31	$13	1.8%	Defined
MORGAN STANLEY & CO. LLC	1,493	$628	86.6%	Defined
MORGAN STANLEY SMITH BARNEY LLC	200	$84	11.6%	Defined

Arax Advisory Partners

$241

0.00%

573

FEDERATED HERMES, INC.

$79

0.00%

189

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
FEDERATED MDTA LLC	189	$79	100.0%	Defined

NATIONAL BANK OF CANADA /FI/

$67

0.00%

160

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
National Bank Financial Inc.	160	$67	100.0%	Defined

BNP PARIBAS ARBITRAGE, SA

$59

0.00%

141

JPMORGAN CHASE & CO JSPRW

$40

0.00%

2,941

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
J.P. Morgan Securities LLC	2,941	$40	100.0%	Defined

WOLVERINE ASSET MANAGEMENT LLC JSPRW

$22

0.00%

1,639

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Wolverine Holdings, LLC	1,639	$22	100.0%	Defined

JONES FINANCIAL COMPANIES LLLP

$21

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Edward D. Jones & Co., L.P.	50	$21	100.0%	Sole

ROYAL BANK OF CANADA

$16

0.00%

SBI Securities Co., Ltd.

0.00%

SG Americas Securities, LLC

0.00%

10,556

JPMORGAN CHASE & CO

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
J.P. Morgan Securities plc	9	$3	100.0%	Defined

Caitong International Asset Management Co., Ltd

0.00%

IFP Advisors, Inc JSPRW

—

SkyView Investment Advisors, LLC JSPRW

—

302

Key facts CIK 1788028 CUSIP 471871202 13F (30d) 2 filings 2 filers Visit website Investor relations