Millennium Management
KLRS

Millennium Management’s Kalaris Therapeutics KLRS Stock Holding History

Millennium Management’s Portfolio KLRS Stock Details KLRS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$344K Buy
+59,534
New +$528K ﹤0.01% 4948
2025
Q4 		– Sell
-24,923
Closed -$144K – 6594
2025
Q3 		$144K Sell
24,923
-29,169
-54% -$96.4K ﹤0.01% 5628
2025
Q2 		$144K Buy
54,092
+37,510
+226% +$169K ﹤0.01% 5453
2025
Q1 		$133K Sell
16,582
-115,322
-87% -$1.13M ﹤0.01% 5389
2024
Q4 		$1.27M Sell
131,904
-10,913
-8% -$165K ﹤0.01% 4005
2024
Q3 		$2.66M Sell
142,817
-476
-0.3% -$8.33K ﹤0.01% 3437
2024
Q2 		$2.38M Buy
143,293
+15,354
+12% +$271K ﹤0.01% 3382
2024
Q1 		$2.22M Sell
127,939
-41,801
-25% -$682K ﹤0.01% 3644
2023
Q4 		$2.65M Buy
169,740
+137,418
+425% +$5.42M ﹤0.01% 3374
2023
Q3 		$1.6M Buy
32,322
+22,986
+246% +$1.57M ﹤0.01% 3771
2023
Q2 		$730K Buy
9,336
+6,340
+212% +$603K ﹤0.01% 4278
2023
Q1 		$272K Buy
2,996
+1,827
+156% +$233K ﹤0.01% 4979
2022
Q4 		$138K Buy
+1,169
New +$198K ﹤0.01% 5476
2022
Q3 		– Sell
-762
Closed -$68K – 7584
2022
Q2 		$68K Sell
762
-5,455
-88% -$572K ﹤0.01% 6078
2022
Q1 		$965K Buy
6,217
+3,191
+105% +$637K ﹤0.01% 4568
2021
Q4 		$901K Buy
+3,026
New +$1.4M ﹤0.01% 4508
2021
Q3 		– Sell
-3,791
Closed -$1.72M – 7348
2021
Q2 		$1.72M Buy
+3,791
New +$1.96M ﹤0.01% 4142

Other funds holding KLRS

SB
Samsara BioCapital Palo Alto, California $1.03B AUM 214.94% 1-Year Est. Return
RI
RTW Investments New York $10B AUM 135.35% 1-Year Est. Return
PBA
Paradigm Biocapital Advisors New York $4.89B AUM 251.12% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $3.61B AUM 203.3% 1-Year Est. Return
IC
Ikarian Capital Dallas, Texas $1.23B AUM 600.17% 1-Year Est. Return
PBM
Propel Bio Management Los Angeles, California $159M AUM 60.94% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
KCM
Kalehua Capital Management Dallas, Texas $141M AUM
Raymond James Financial
Raymond James Financial St Petersburg, Florida $324B AUM 22.36% 1-Year Est. Return

Millennium Management's KLRS Position: Q1 2026 in Review

Millennium Management opened a new position in Kalaris Therapeutics (KLRS) in Q1 2026: 59,534 shares worth $344K. The stake represents ﹤0.01% of the portfolio and ranks #4948 among its holdings. This is a return to the name: Millennium Management previously reported a position in KLRS as recently as Q3 2025.

Millennium Management first reported a position in KLRS in Q2 2021 and has held it in 17 quarters since. The position peaked at $2.66M in Q3 2024. 58 funds tracked by Wall St. Rank hold KLRS as of Q1 2026.

  • Millennium Management held 59,534 shares of Kalaris Therapeutics worth $344K as of Q1 2026.
  • Kalaris Therapeutics was a new Millennium Management position in Q1 2026.
  • Kalaris Therapeutics made up ﹤0.01% of Millennium Management's portfolio in Q1 2026, its #4948 holding.
  • Millennium Management first reported a position in Kalaris Therapeutics in Q2 2021 and has held it in 17 quarters since.
  • Millennium Management's Kalaris Therapeutics position peaked at $2.66M in Q3 2024.
  • 58 funds tracked by Wall St. Rank held Kalaris Therapeutics as of Q1 2026.

Based on Millennium Management's 13F filing for Q1 2026, filed 15 May 2026.