Kalaris Therapeutics, Inc. - KLRS
Detailed investor-level table based on 13F positions.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Samsara BioCapital, LLC | History | No change | 12,948,081 | 74,710 | 7.26% | 11.27% | 1 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| RTW INVESTMENTS, LP | History | No change | 1,300,000 | 7,501 | 0.07% | 0.11% | 2 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Paradigm Biocapital Advisors LP | History | No change | 700,000 | 4,039 | 0.08% | 0.15% | 3 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Alyeska Investment Group, L.P. | History | Added to | 572,687 | 3,274 | 0.01% | 0.01% | 4 | +169,136 | 41.91% | Q1 2026 | May 15, 2026 |
| Siren, L.L.C. | History | No change | 435,798 | 2,514 | 0.07% | 0.11% | 5 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| VANGUARD GROUP INC | History | No change | 292,790 | 2,471 | 0.0% | 0.0% | 6 | 0 | 0.0% | Q4 2025 | Jan 29, 2026 |
| Ikarian Capital, LLC | History | No change | 360,000 | 2,077 | 0.17% | 0.24% | 7 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Propel Bio Management, LLC | History | Added to | 295,771 | 1,721 | 1.08% | 0.3% | 8 | +253,718 | 603.33% | Q1 2026 | May 14, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | History | New | 255,348 | 1,473 | 0.0% | — | 9 | +255,348 | New | Q1 2026 | May 15, 2026 |
| Kalehua Capital Management LLC | History | Reduced | 135,585 | 782 | 0.66% | 1.17% | 10 | -4,316 | -3.09% | Q1 2026 | May 15, 2026 |
| RAYMOND JAMES FINANCIAL INC | History | Added to | 118,887 | 685 | 0.0% | 0.0% | 11 | +30,451 | 34.43% | Q1 2026 | May 14, 2026 |
| GOLDMAN SACHS GROUP INC | History | Added to | 110,503 | 637 | 0.0% | 0.0% | 12 | +76,200 | 222.14% | Q1 2026 | May 15, 2026 |
| Woodline Partners LP | History | No change | 100,000 | 577 | 0.0% | 0.0% | 13 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| ADAR1 Capital Management, LLC | History | No change | 100,000 | 577 | 0.03% | 0.06% | 14 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| WHI TRUST Co LLC | History | No change | 97,493 | 562 | 0.42% | 0.63% | 15 | 0 | 0.0% | Q1 2026 | Apr 24, 2026 |
| BOOTHBAY FUND MANAGEMENT, LLC | History | No change | 92,261 | 532 | 0.01% | 0.01% | 16 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Added to | 87,545 | 505 | 0.0% | 0.0% | 17 | +4,898 | 5.93% | Q1 2026 | May 15, 2026 |
| Simplify Asset Management Inc. | History | Added to | 87,426 | 504 | 0.01% | 0.0% | 18 | +67,352 | 335.52% | Q1 2026 | Apr 27, 2026 |
| MARSHALL WACE, LLP | History | Reduced | 67,879 | 391 | 0.0% | 0.0% | 19 | -4,997 | -6.86% | Q1 2026 | May 14, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | History | Reduced | 66,151 | 381 | 0.0% | 0.0% | 20 | -21,600 | -24.62% | Q1 2026 | May 14, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | New | 59,534 | 343 | 0.0% | — | 21 | +59,534 | New | Q1 2026 | May 15, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Added to | 52,684 | 303 | 0.0% | 0.0% | 22 | +39,828 | 309.8% | Q1 2026 | May 15, 2026 |
| 683 Capital Management, LLC | History | Reduced | 45,000 | 259 | 0.01% | 0.03% | 23 | -35,590 | -44.16% | Q1 2026 | May 15, 2026 |
| Belpointe Asset Management LLC | History | No change | 40,000 | 230 | 0.01% | 0.01% | 24 | 0 | 0.0% | Q1 2026 | Apr 28, 2026 |
| Fortis Capital Advisors, LLC | History | No change | 40,000 | 230 | 0.03% | 0.05% | 25 | 0 | 0.0% | Q1 2026 | Apr 28, 2026 |
| Squarepoint Ops LLC | History | Added to | 39,773 | 229 | 0.0% | 0.0% | 26 | +14,406 | 56.79% | Q1 2026 | May 15, 2026 |
| MORGAN STANLEY | History | Added to | 38,344 | 221 | 0.0% | 0.0% | 27 | +10,396 | 37.2% | Q1 2026 | May 15, 2026 |
| VANGUARD FIDUCIARY TRUST CO | History | New | 36,717 | 211 | 0.0% | — | 28 | +36,717 | New | Q1 2026 | May 08, 2026 |
| BlackRock, Inc. | History | Reduced | 36,043 | 207 | 0.0% | 0.0% | 29 | -2,411 | -6.27% | Q1 2026 | May 13, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | Added to | 30,650 | 176 | 0.0% | 0.0% | 30 | +2,891 | 10.41% | Q1 2026 | May 15, 2026 |
| STATE STREET CORP | History | Added to | 26,510 | 152 | 0.0% | 0.0% | 31 | +1,100 | 4.33% | Q1 2026 | May 15, 2026 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | History | No change | 22,500 | 129 | 0.0% | 0.0% | 32 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Stonepine Capital Management, LLC | History | New | 20,400 | 117 | 0.05% | — | 33 | +20,400 | New | Q1 2026 | May 14, 2026 |
| Velan Capital Investment Management LP | History | New | 18,000 | 103 | 0.06% | — | 34 | +18,000 | New | Q1 2026 | May 15, 2026 |
| RBF Capital, LLC | History | No change | 17,391 | 100 | 0.0% | 0.01% | 35 | 0 | 0.0% | Q1 2026 | May 18, 2026 |
| NORTHERN TRUST CORP | History | Added to | 14,449 | 83 | 0.0% | 0.0% | 36 | +795 | 5.82% | Q1 2026 | May 14, 2026 |
| Independent Advisor Alliance | History | New | 14,230 | 82 | 0.0% | — | 37 | +14,230 | New | Q1 2026 | May 12, 2026 |
| Connor, Clark & Lunn Investment Management Ltd. | History | Added to | 13,655 | 78 | 0.0% | 0.0% | 38 | +3,496 | 34.41% | Q1 2026 | May 11, 2026 |
| WealthTrust Asset Management, LLC | History | New | 12,416 | 71 | 0.04% | — | 39 | +12,416 | New | Q1 2026 | May 06, 2026 |
| HRT FINANCIAL LP | History | New | 11,617 | 67 | 0.0% | — | 40 | +11,617 | New | Q1 2026 | May 14, 2026 |
| Qube Research & Technologies Ltd | History | New | 11,103 | 64 | 0.0% | — | 41 | +11,103 | New | Q1 2026 | May 15, 2026 |
| Johnson Financial Group, Inc. | History | No change | 10,000 | 57 | 0.0% | 0.0% | 42 | 0 | 0.0% | Q1 2026 | May 07, 2026 |
| CITIGROUP INC | History | Added to | 8,703 | 50 | 0.0% | — | 43 | +8,702 | 870200.0% | Q1 2026 | May 11, 2026 |
| FMR LLC | History | No change | 7,806 | 45 | 0.0% | 0.0% | 44 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| UBS Group AG | History | Added to | 6,184 | 35 | 0.0% | 0.0% | 45 | +3,493 | 129.8% | Q1 2026 | May 05, 2026 |
| BARCLAYS PLC | History | Reduced | 5,280 | 30 | 0.0% | 0.0% | 46 | -785 | -12.94% | Q1 2026 | May 14, 2026 |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P | History | No change | 4,000 | 23 | 0.02% | 0.03% | 47 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Steward Partners Investment Advisory, LLC | History | New | 2,215 | 12 | 0.0% | — | 48 | +2,215 | New | Q1 2026 | May 08, 2026 |
| Vanguard Global Advisers, LLC | History | New | 725 | 4 | 0.0% | — | 49 | +725 | New | Q1 2026 | May 08, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | Added to | 652 | 3 | 0.0% | — | 50 | +600 | 1153.85% | Q1 2026 | May 12, 2026 |
| Strengthening Families & Communities, LLC | History | New | 268 | 1 | 0.0% | — | 52 | +268 | New | Q1 2026 | May 11, 2026 |
| ROYAL BANK OF CANADA | History | Reduced | 103 | 1 | 0.0% | 0.0% | 51 | -10 | -8.85% | Q1 2026 | May 15, 2026 |
| Redmile Group, LLC | History | Closed out | 0 | 0 | — | 0.05% | — | -82,955 | -100.0% | Q1 2026 | May 15, 2026 |
| JANE STREET GROUP, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -33,114 | -100.0% | Q1 2026 | May 12, 2026 |
| OMERS ADMINISTRATION Corp | History | Closed out | 0 | 0 | — | 0.0% | — | -30,000 | -100.0% | Q1 2026 | May 15, 2026 |
| Walleye Capital LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -11,225 | -100.0% | Q1 2026 | May 13, 2026 |
| XTX Topco Ltd | History | Closed out | 0 | 0 | — | 0.0% | — | -10,897 | -100.0% | Q1 2026 | May 15, 2026 |
| Keel Point, LLC | History | Closed out | 0 | 0 | — | 0.01% | — | -10,225 | -100.0% | Q1 2026 | May 29, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Closed out | 0 | 0 | — | 0.0% | — | -6,704 | -100.0% | Q1 2026 | May 15, 2026 |
| Tower Research Capital LLC (TRC) | History | New | 139 | 0 | — | — | — | +139 | New | Q1 2026 | May 15, 2026 |
| FEDERATED HERMES, INC. | History | New | 34 | 0 | — | — | — | +34 | New | Q1 2026 | May 11, 2026 |
| HARBOUR INVESTMENTS, INC. | History | New | 13 | 0 | — | — | — | +13 | New | Q1 2026 | May 15, 2026 |
| JPMORGAN CHASE & CO | History | No change | 50 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| Parallel Advisors, LLC | History | No change | 49 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | Jun 02, 2026 |
| SBI Securities Co., Ltd. | History | No change | 5 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | Apr 27, 2026 |
| Fortitude Family Office, LLC | History | No change | 114 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | Apr 15, 2026 |