undamentalytics Newsletter

Kalaris Therapeutics, Inc.: which funds bought and sold

Institutions that bought and sold Kalaris Therapeutics shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 28 institutions that filed 13F reports for both quarters added to or opened positions in Kalaris Therapeutics, and 20 cut or closed them. Together they sold a net 678K shares, −3.6% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 183K shares (+7.3%); index fund managers were net buyers of 229K shares (+50.2%). 10 opened a new position and 12 sold out entirely.

Bought, Q2 2026 28 institutions, 10 of them new holders Sold, Q2 2026 20 institutions, 12 of them sold out
Net change, all compared −678K shares (−3.6%)
Net change, active managers +183K shares (+7.3%), 6 bought, 6 sold

Buyers versus sellers

institutions compared, 68
Active managers and hedge funds 6 bought · 6 sold · +183K
Index fund managers 5 bought · 0 sold · +229K
Other institutions 17 bought · 14 sold · −1.1M

Biggest buyers

by change in shares held
Biggest buyers
Institution Change in shares Shares June 30, 2026 Value
UBS Group AG +256K +4138.9% 262K $1.1M
Vanguard Capital Management LLC Index funds +143K +56.1% 399K $1.6M
Citadel Advisors LLC Hedge fund +96K New position 96K $389,792
Renaissance Technologies LLC Hedge fund +83K +125.8% 149K $607,859
Verdad Advisers, LP +80K New position 80K $326,809
Marshall Wace, LLP Hedge fund +71K +105.1% 139K $566,549
Pale Fire Capital Se +40K New position 40K $161,278
Morgan Stanley +34K +88.6% 72K $294,367
Trexquant Investment LP Hedge fund +30K New position 30K $121,030
Vanguard Fiduciary Trust Co Index funds +29K +80.2% 66K $269,349
Geode Capital Management, LLC Index funds +26K +30.3% 114K $464,287
Blackrock, Inc. Index funds +18K +51.0% 54K $221,580
Quadrature Capital Ltd Hedge fund +17K New position 17K $67,265
Connor, Clark & Lunn Investment Management Ltd. +16K +119.8% 30K $122,128
Dimensional Fund Advisors LP +16K New position 16K $64,991
Northern Trust Corp Index funds +11K +78.8% 26K $105,165
Virtu Financial LLC +11K New position 11K $44,000
Sigma Planning Corp +10K New position 10K $41,380
Bridgeway Capital Management, LLC Active manager +10K +44.4% 33K $132,275
Stonepine Capital Management, LLC +9,722 +47.7% 30K $122,597

Biggest sellers

by change in shares held
Biggest sellers
Institution Change in shares Shares June 30, 2026 Value
Paradigm Biocapital Advisors LP −700K Sold out 0 —
Propel Bio Management, LLC −296K Sold out 0 —
Kalehua Capital Management LLC −271K Sold out 0 —
Goldman Sachs Group Inc −94K −85.5% 16K $65,340
Simplify Asset Management Inc. −87K Sold out 0 —
Samsara Biocapital, LLC −67K −0.5% 12.9M $52.4M
Millennium Management LLC Hedge fund −60K Sold out 0 —
683 Capital Management, LLC Hedge fund −45K Sold out 0 —
Susquehanna International Group, LLP −38K −73.0% 14K $57,879
Raymond James Financial Inc −22K −18.3% 97K $395,457
Qube Research & Technologies Ltd Hedge fund −11K Sold out 0 —
Johnson Financial Group, Inc. −10K Sold out 0 —
Citigroup Inc −8,703 Sold out 0 —
Two Sigma Investments, LP Hedge fund −6,803 −22.2% 24K $97,057
Barclays PLC −4,977 −94.3% 303 $1,233
Squarepoint Ops LLC Hedge fund −998 −2.5% 39K $157,814
BNP Paribas Financial Markets −600 −92.0% 52 $212
Fortitude Family Office, LLC −114 Sold out 0 —
Royal Bank Of Canada −91 Sold out 0 —
Federated Hermes, Inc. Active manager −34 Sold out 0 —

New positions

largest by value
InstitutionSharesValue June 30, 2026
Citadel Advisors LLCHedge fund 96K $389,792
Verdad Advisers, LP 80K $326,809
Pale Fire Capital Se 40K $161,278
Trexquant Investment LPHedge fund 30K $121,030
Quadrature Capital LtdHedge fund 17K $67,265
Dimensional Fund Advisors LP 16K $64,991
Virtu Financial LLC 11K $44,000
Sigma Planning Corp 10K $41,380
Integrated Wealth Concepts LLC 5,000 $20,350
Caitong International Asset Management Co., Ltd 7 $28

Sold out

largest by value
InstitutionSharesValue March 31, 2026
Paradigm Biocapital Advisors LP 700K $4M
Propel Bio Management, LLC 296K $1.7M
Kalehua Capital Management LLC 271K $1.6M
Simplify Asset Management Inc. 87K $504,448
Millennium Management LLCHedge fund 60K $343,511
683 Capital Management, LLCHedge fund 45K $259,650
Qube Research & Technologies LtdHedge fund 11K $64,064
Johnson Financial Group, Inc. 10K $57,700
Citigroup Inc 8,703 $50,216
Royal Bank Of Canada 91 $1,000

Who holds the shares

13F holdings at June 30, 2026
Institutions reporting
56
Ten largest holders
92.1%
of 13F-reported shares
Index fund managers
3.8%
of 13F-reported shares
Active managers and hedge funds
15.0%
of 13F-reported shares
Buying and selling by type of institution, March 31, 2026 to June 30, 2026
TypeBoughtSoldNewSold outNet change in sharesNet %
Active managers and hedge funds 6 6 3 4 +183K +7.3%
Index fund managers 5 0 0 0 +229K +50.2%
Other institutions 17 14 7 8 −1.1M −6.9%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

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