Kalaris Therapeutics, Inc. - KLRS

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q1 2026 · Compare: Q4 2025
13D/13G major owners: Ownership tab.
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