Kalaris Therapeutics, Inc.
KLRS- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001754068
No open-market purchases or sales by Kalaris Therapeutics, Inc. insiders were filed in the last 90 days; 56 institutions reported holding it in 13F filings for Q2 2026, worth $73.4M in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Kalaris Therapeutics, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 58
- +8 vs. Q4 2025
- Shares held
- 18.6M
- +875.4K (+4.9%) vs. Q4 2025
- Total value
- $107.2M
- −$42.2M (−28.3%) vs. Q4 2025
- New holders
- 15
- 16 more added
- Sold out
- 7
- 7 more reduced
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting KLRS on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 56 | $73.4M |
| Q1 2026 | 58 | $107.2M |
| Q4 2025 | 51 | $151.9M |
| Q3 2025 | 32 | $76.4M |
| Q2 2025 | 30 | $35.7M |
| Q1 2025 | 32 | $111.4M |
| Q4 2024 | 53 | $20.7M |
| Q3 2024 | 60 | $36.3M |
| Q2 2024 | 72 | $33.9M |
| Q1 2024 | 77 | $36.4M |
| Q4 2023 | 82 | $28.5M |
| Q3 2023 | 90 | $115.5M |
| Q2 2023 | 94 | $183.6M |
| Q1 2023 | 89 | $156.0M |
| Q4 2022 | 86 | $193.1M |
| Q3 2022 | 87 | $293.7M |
| Q2 2022 | 84 | $109.6M |
| Q1 2022 | 84 | $184.1M |
| Q4 2021 | 84 | $329.4M |
| Q3 2021 | 80 | $640.3M |
| Q2 2021 | 84 | $521.8M |
| Q1 2021 | 75 | $624.4M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Kalaris Therapeutics, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| SBI Securities Co., Ltd. | 5 | $29 | 0.00% | 00.0% | Unchanged |
| Harbour Investments, Inc. | 13 | $75 | 0.00% | +13 | New |
| Federated Hermes, Inc. | 34 | $196 | 0.00% | +34 | New |
| JPMorgan Chase & Co | 50 | $265 | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 49 | $283 | 0.00% | 00.0% | Unchanged |
| Fortitude Family Office, LLC | 114 | $658 | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 139 | $802 | 0.00% | +139 | New |
| Royal Bank of Canada | 103 | $1.00K | 0.00% | −10−8.8% | Reduced |
| Strengthening Families & Communities, LLC | 268 | $1.55K | 0.00% | +268 | New |
| BNP Paribas Arbitrage, SA | 652 | $3.76K | 0.00% | +600+1,153.8% | Added |
| Vanguard Global Advisers, LLC | 725 | $4.18K | 0.00% | +725 | New |
| Steward Partners Investment Advisory, LLC | 2,215 | $12.8K | 0.00% | +2,215 | New |
| Nano Cap New Millennium Growth Fund L P | 4,000 | $23.1K | 0.02% | 00.0% | Unchanged |
| Barclays PLC | 5,280 | $30.5K | 0.00% | −785−12.9% | Reduced |
| UBS Group AG | 6,184 | $35.7K | 0.00% | +3,493+129.8% | Added |
| FMR LLC | 7,806 | $45.0K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 8,703 | $50.2K | 0.00% | +8,702+870,200.0% | Added |
| Johnson Financial Group, Inc. | 10,000 | $57.7K | 0.00% | 00.0% | Unchanged |
| Qube Research & Technologies Ltd | 11,103 | $64.1K | 0.00% | +11,103 | New |
| HRT Financial LP | 11,617 | $67.0K | 0.00% | +11,617 | New |
| WealthTrust Asset Management, LLC | 12,416 | $71.6K | 0.04% | +12,416 | New |
| Connor, Clark & Lunn Investment Management Ltd. | 13,655 | $78.8K | 0.00% | +3,496+34.4% | Added |
| Independent Advisor Alliance | 14,230 | $82.1K | 0.00% | +14,230 | New |
| Northern Trust Corp | 14,449 | $83.4K | 0.00% | +795+5.8% | Added |
| RBF Capital, LLC | 17,391 | $100.3K | 0.00% | 00.0% | Unchanged |
| Velan Capital Investment Management LP | 18,000 | $103.9K | 0.07% | +18,000 | New |
| Stonepine Capital Management, LLC | 20,400 | $117.7K | 0.10% | +20,400 | New |
| Bridgeway Capital Management, LLC | 22,500 | $129.8K | 0.00% | 00.0% | Unchanged |
| State Street Corp | 26,510 | $153.0K | 0.00% | +1,100+4.3% | Added |
| Two Sigma Investments, LP | 30,650 | $176.8K | 0.00% | +2,891+10.4% | Added |
| BlackRock, Inc. | 36,043 | $208.0K | 0.00% | −2,411−6.3% | Reduced |
| Vanguard Fiduciary Trust Co | 36,717 | $211.9K | 0.00% | +36,717 | New |
| Morgan Stanley | 38,344 | $221.2K | 0.00% | +10,396+37.2% | Added |
| Squarepoint Ops LLC | 39,773 | $229.5K | 0.00% | +14,406+56.8% | Added |
| Belpointe Asset Management LLC | 40,000 | $230.8K | 0.01% | 00.0% | Unchanged |
| Fortis Capital Advisors, LLC | 40,000 | $230.8K | 0.03% | 00.0% | Unchanged |
| 683 Capital Management, LLC | 45,000 | $259.6K | 0.02% | −35,590−44.2% | Reduced |
| Susquehanna International Group, LLP | 52,684 | $304.0K | 0.00% | +39,828+309.8% | Added |
| Millennium Management LLC | 59,534 | $343.5K | 0.00% | +59,534 | New |
| Renaissance Technologies LLC | 66,151 | $381.7K | 0.00% | −21,600−24.6% | Reduced |
| Marshall Wace, LLP | 67,879 | $391.7K | 0.00% | −4,997−6.9% | Reduced |
| Simplify Asset Management Inc. | 87,426 | $504.4K | 0.01% | +67,352+335.5% | Added |
| Geode Capital Management, LLC | 87,545 | $505.3K | 0.00% | +4,898+5.9% | Added |
| Boothbay Fund Management, LLC | 92,261 | $532.3K | 0.01% | 00.0% | Unchanged |
| Whi Trust Co LLC | 97,493 | $562.5K | 0.42% | 00.0% | Unchanged |
| Woodline Partners LP | 100,000 | $577.0K | 0.00% | 00.0% | Unchanged |
| ADAR1 Capital Management, LLC | 100,000 | $577.0K | 0.03% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 110,503 | $637.6K | 0.00% | +76,200+222.1% | Added |
| Raymond James Financial Inc | 118,887 | $686.0K | 0.00% | +30,451+34.4% | Added |
| Kalehua Capital Management LLC | 135,585 | $782.3K | 0.55% | −4,316−3.1% | Reduced |
| Vanguard Capital Management LLC | 255,348 | $1.47M | 0.00% | +255,348 | New |
| Propel Bio Management, LLC | 295,771 | $1.72M | 1.08% | +253,718+603.3% | Added |
| Ikarian Capital, LLC | 360,000 | $2.08M | 0.30% | 00.0% | Unchanged |
| Siren, L.L.C. | 435,798 | $2.51M | 0.07% | 00.0% | Unchanged |
| Alyeska Investment Group, L.P. | 572,687 | $3.27M | 0.01% | +169,136+41.9% | Added |
| Paradigm Biocapital Advisors LP | 700,000 | $4.04M | 0.08% | 00.0% | Unchanged |
| RTW Investments, LP | 1,300,000 | $7.50M | 0.07% | 00.0% | Unchanged |
| Samsara BioCapital, LLC | 12,948,081 | $74.7M | 7.26% | 00.0% | Unchanged |
| Redmile Group, LLC | 0 | $0 | 0.00% | −82,955−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −33,114−100.0% | Sold out |
| Omers Administration Corp | 0 | $0 | 0.00% | −30,000−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −11,225−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −10,897−100.0% | Sold out |
| Keel Point, LLC | 0 | $0 | 0.00% | −10,225−100.0% | Sold out |
| Bank of America Corp | 0 | $0 | 0.00% | −6,704−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |