JASPER THERAPEUTICS INC (JSPR)
Institutional ownership reported to the SEC as of Q2 2026, across 18 quarters.
Institutions report 12,046,604 shares against 33,274,561 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| Velan Capital Investment Management LP | $1.1M | 2,668,395 | 0.68% | 10q | HELD |
| ACORN CAPITAL ADVISORS, LLC | $604.0K | 1,438,159 | 0.16% | 4q | +1.9%+$11.2K |
| KINGDON CAPITAL MANAGEMENT, L.L.C. | $569.2K | 1,352,106 | 0.06% | 2q | HELD |
| VANGUARD CAPITAL MANAGEMENT LLC | $493.4K | 1,172,021 | 0.00% | 2q | HELD |
| Rock Springs Capital Management LP | $463.4K | 1,100,726 | 0.02% | 10q | HELD |
| Carlyle Group Inc. | $448.9K | 1,066,189 | 0.00% | 10q | HELD |
| GSA CAPITAL PARTNERS LLP | $225.0K | 534,697 | 0.01% | 3q | +2701.8%+$217.0K |
| MILLENNIUM MANAGEMENT LLC | $205.0K | 486,933 | 0.00% | 7q | -69.9%-$476.0K |
| Lion Point Capital, LP | $195.8K | 465,000 | 0.94% | 10q | HELD |
| CITADEL ADVISORS LLC | $192.3K | options only | 0.00% | 8q | OPTIONS |
| GEODE CAPITAL MANAGEMENT, LLC | $111.1K | 263,808 | 0.00% | 10q | -17.0%-$22.7K |
| RENAISSANCE TECHNOLOGIES LLC | $100.2K | 237,900 | 0.00% | 5q | +34.0%+$25.4K |
| JANE STREET GROUP, LLC | $78.0K | 101,743 | 0.00% | 3q | +375.1%+$61.6K |
| BlackRock, Inc. | $71.4K | 169,627 | 0.00% | 8q | -29.9%-$30.5K |
| VANGUARD FIDUCIARY TRUST CO | $63.1K | 149,943 | 0.00% | 2q | HELD |
| ADAR1 Capital Management, LLC | $58.9K | 140,000 | 0.00% | 3q | HELD |
| Quarry LP | $55.4K | 131,529 | 0.00% | 3q | HELD |
| STATE STREET CORP | $37.6K | 89,398 | 0.00% | 10q | +100.0%+$18.8K |
| UBS Group AG | $24.7K | 58,759 | 0.00% | 9q | -27.6%-$9.4K |
| Jain Global LLC | $21.5K | 51,185 | 0.00% | 3q | +184.0%+$14.0K |
| OSAIC HOLDINGS, INC. | $19.3K | 45,850 | 0.00% | 9q | +12.2%+$2.1K |
| NORTHERN TRUST CORP | $17.6K | 41,882 | 0.00% | 10q | +21.1%+$3.1K |
| GROUP ONE TRADING LLC | $16.7K | 19,930 | 0.00% | 4q | +2152.0%+$15.9K |
| DIKER MANAGEMENT LLC | $15.0K | 35,000 | 0.01% | 2q | HELD |
| Qube Research & Technologies Ltd | $14.2K | 33,722 | 0.00% | new | NEW |
| XTX Topco Ltd | $14.1K | 33,406 | 0.00% | 2q | -15.3%-$2.5K |
| SIMPLEX TRADING, LLC | $12.5K | 28,591 | 0.00% | 2q | -2.3% |
| Ikarian Capital, LLC | $10.1K | 24,093 | 0.00% | 10q | HELD |
| Rehmann Capital Advisory Group | $6.4K | 15,300 | 0.00% | 2q | HELD |
| Sequent Planning LLC | $6.3K | 14,900 | 0.00% | 5q | HELD |
| BANK OF AMERICA CORP /DE/ | $6.0K | 14,192 | 0.00% | 10q | -95.2%-$117.5K |
| IEQ CAPITAL, LLC | $5.7K | 13,538 | 0.00% | 4q | -73.7%-$16.0K |
| Engineers Gate Manager LP | $5.5K | 12,989 | 0.00% | 3q | -50.3%-$5.5K |
| LPL Financial LLC | $5.2K | 12,250 | 0.00% | 2q | HELD |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $4.3K | options only | 0.00% | 10q | OPTIONS |
| SG Americas Securities, LLC | $4.0K | 10,556 | 0.00% | new | NEW |
| Tower Research Capital LLC (TRC) | $3.9K | 9,336 | 0.00% | 8q | +48.1%+$1.3K |
| MORGAN STANLEY | $726 | 1,724 | 0.00% | 10q | -99.9%-$560.8K |
| Arax Advisory Partners | $241 | 573 | 0.00% | new | NEW |
| FEDERATED HERMES, INC. | $80 | 189 | 0.00% | 6q | -95.1%-$1.6K |
| NATIONAL BANK OF CANADA /FI/ | $63 | 160 | 0.00% | 6q | HELD |
| BNP PARIBAS FINANCIAL MARKETS | $59 | 141 | 0.00% | 9q | HELD |
| SBI Securities Co., Ltd. | $27 | 64 | 0.00% | 7q | -1.5% |
| JONES FINANCIAL COMPANIES LLLP | $17 | 50 | 0.00% | 4q | HELD |
| JPMORGAN CHASE & CO | $4 | 9 | 0.00% | 9q | HELD |
| ROYAL BANK OF CANADA | $0 | 40 | 0.00% | new | NEW |
| Caitong International Asset Management Co., Ltd | $0 | 1 | 0.00% | 2q | HELD |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-17 | 13G | Velan Capital Investment Management LPwith 11 co-filers | 9.9% |
| 2026-07-20 | 13D/A | Velan Capital Investment Management LPwith 11 co-filers | 9.9% |
| 2026-07-10 | 13G/A | Integrated Core Strategies (US) LLCwith 3 co-filers | 1.7% |
Tender offers and delisting
Schedules TO, 13E-3 and 14D-9 and Form 25 filed in the last 180 days. Price a share is read from the filing itself where it states one plainly; a marker means we found no figure we could stand behind, and the reason is on it.
| Filed | What | Filed by | Price a share | Source |
|---|---|---|---|---|
| 2026-10-07 | Issuer tender offer | itself | -? | filing |
| 2026-09-24 | Delisting notice from the exchange | Nasdaq Stock Market LLC | - | filing |
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-09-28 | 2026-09-23 | Directors or officers departed or appointed | filing |
| 2026-08-26 | 2026-08-21 | Material agreement entered | filing |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 47 | $5.3M | 12,046,604 | 5 | 10 | 13 | 4.5% |
| Q1 2026 | 58 | $14.0M | 15,813,640 | 10 | 13 | 13 | 1.0% |
| Q4 2025 | 55 | $36.4M | 19,606,256 | 11 | 21 | 11 | 1.4% |
| Q3 2025 | 61 | $48.3M | 20,155,817 | 15 | 15 | 17 | 0.9% |
| Q2 2025 | 66 | $70.1M | 12,532,296 | 16 | 16 | 16 | 0.8% |
| Q1 2025 | 71 | $56.4M | 13,047,658 | 13 | 19 | 22 | 0.5% |
| Q4 2024 | 89 | $344.1M | 15,654,434 | 18 | 30 | 13 | 2.8% |
| Q3 2024 | 79 | $279.9M | 14,701,347 | 22 | 21 | 19 | 1.7% |
| Q2 2024 | 69 | $334.2M | 14,570,837 | 27 | 15 | 12 | 1.3% |
| Q1 2024 | 59 | $395.7M | 13,380,993 | 61 | 0 | 1 | 1.3% |
| Q4 2023 | 2 | $3.3M | 4,201,816 | 1 | 0 | 0 | 88.2% |
| Q3 2023 | 2 | $50.1K | 0 | 1 | 0 | 0 | 100.0% |
| Q2 2023 | 1 | $1.6K | 0 | 0 | 0 | 0 | 100.0% |
| Q1 2023 | 2 | $40.1K | 0 | 2 | 0 | 0 | 100.0% |
| Q3 2022 | 1 | $5.0K | 0 | 0 | 0 | 0 | 100.0% |
| Q2 2022 | 2 | $40.0K | 0 | 2 | 0 | 0 | 100.0% |
| Q1 2022 | 1 | $29.0K | 0 | 0 | 0 | 0 | 100.0% |
| Q4 2021 | 1 | $66.0K | 0 | 1 | 0 | 0 | 100.0% |