undamentalytics Newsletter

Blaize Holdings, Inc.: which funds bought and sold

Institutions that bought and sold Blaize Holdings 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, 87 institutions that filed 13F reports for both quarters added to or opened positions in Blaize Holdings, and 42 cut or closed them. Together they added a net 8.2M shares, +27.7% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 3.7M shares (+84.8%); index fund managers were net buyers of 3.9M shares (+26.8%). 34 opened a new position and 20 sold out entirely.

Bought, Q2 2026 87 institutions, 34 of them new holders Sold, Q2 2026 42 institutions, 20 of them sold out
Net change, all compared +8.2M shares (+27.7%)
Net change, active managers +3.7M shares (+84.8%), 12 bought, 5 sold

Buyers versus sellers

institutions compared, 142
Active managers and hedge funds 12 bought · 5 sold · +3.7M
Index fund managers 9 bought · 1 sold · +3.9M
Other institutions 66 bought · 36 sold · +580K

Biggest buyers

by change in shares held
Biggest buyers
Institution Change in shares Shares June 30, 2026 Value
Blackrock, Inc. Index funds +1.7M +30.9% 7.4M $10.2M
Marshall Wace, LLP Hedge fund +1.6M New position 1.6M $2.2M
Citadel Advisors LLC Hedge fund +1.2M +1520.8% 1.2M $1.7M
Vanguard Capital Management LLC Index funds +1.1M +29.8% 4.7M $6.4M
Nuveen, LLC +839K +725.0% 955K $1.3M
Millennium Management LLC Hedge fund +818K New position 818K $1.1M
Lazard Asset Management LLC Active manager +783K +65.0% 2.0M $2.7M
Xtx Topco Ltd +452K +1969.7% 475K $655,265
Efg International AG +431K New position 431K $594,291
Geode Capital Management, LLC Index funds +362K +20.4% 2.1M $2.9M
AQR Capital Management LLC Hedge fund +290K +23.9% 1.5M $2.1M
D. E. Shaw & Co., Inc. Hedge fund +280K New position 280K $386,211
UBS Group AG +266K +17.2% 1.8M $2.5M
State Street Corp Index funds +193K +14.0% 1.6M $2.2M
Vanguard Fiduciary Trust Co Index funds +171K +41.6% 581K $802,154
Cantor Fitzgerald, L. P. +150K +19.5% 919K $1.3M
LMR Partners LLP Hedge fund +146K New position 146K $202,112
Charles Schwab Investment Management Inc Index funds +135K +23.1% 721K $994,450
Alphacore Capital LLC +130K +29.5% 570K $787,093
Northern Trust Corp Index funds +116K +17.6% 773K $1.1M

Biggest sellers

by change in shares held
Biggest sellers
Institution Change in shares Shares June 30, 2026 Value
Temasek Holdings (Private) Ltd −1.7M −67.0% 857K $1.2M
Renaissance Technologies LLC Hedge fund −1.4M Sold out 0 —
HRT Financial LP −163K Sold out 0 —
Balyasny Asset Management L.P. Hedge fund −110K Sold out 0 —
Mariner, LLC −108K Sold out 0 —
Vontobel Holding Ltd. −100K −61.6% 62K $86,073
Jane Street Group, LLC −90K Sold out 0 —
Themes Management Co LLC −79K −9.4% 762K $1.1M
Pcm Encore, LLC −74K Sold out 0 —
Jpmorgan Chase & Co −70K −60.0% 46K $64,043
Susquehanna International Group, LLP −55K −21.1% 207K $286,259
Gryphon Financial Partners LLC −50K Sold out 0 —
Los Angeles Capital Management LLC Active manager −38K −26.3% 105K $144,843
Debussy Capital Management LP −37K Sold out 0 —
Caitong International Asset Management Co., Ltd −37K −39.2% 57K $78,584
Worth Venture Partners, LLC −29K Sold out 0 —
Manufacturers Life Insurance Company, The −26K Sold out 0 —
Bank Of America Corp −21K −22.6% 73K $100,193
Commonwealth Equity Services, LLC −19K Sold out 0 —
Voya Investment Management LLC −17K Sold out 0 —

New positions

largest by value
InstitutionSharesValue June 30, 2026
Marshall Wace, LLPHedge fund 1.6M $2.2M
Millennium Management LLCHedge fund 818K $1.1M
Efg International AG 431K $594,291
D. E. Shaw & Co., Inc.Hedge fund 280K $386,211
LMR Partners LLPHedge fund 146K $202,112
Imc-Chicago, LLC 107K $147,812
Alliancebernstein L.P.Active manager 101K $138,828
Orion Porfolio Solutions, LLC 76K $104,728
LPL Financial LLC 46K $63,701
Meridian Wealth Management, LLC 46K $62,928

Sold out

largest by value
InstitutionSharesValue March 31, 2026
Renaissance Technologies LLCHedge fund 1.4M $2.6M
HRT Financial LP 163K $297,000
Balyasny Asset Management L.P.Hedge fund 110K $199,325
Mariner, LLC 108K $195,838
Jane Street Group, LLC 90K $163,194
Pcm Encore, LLC 74K $134,786
Gryphon Financial Partners LLC 50K $90,917
Debussy Capital Management LP 37K $68,139
Worth Venture Partners, LLC 29K $52,052
Manufacturers Life Insurance Company, The 26K $46,547

Who holds the shares

13F holdings at June 30, 2026
Institutions reporting
122
Ten largest holders
65.5%
of 13F-reported shares
Index fund managers
49.1%
of 13F-reported shares
Active managers and hedge funds
21.4%
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 12 5 7 2 +3.7M +84.8%
Index fund managers 9 1 0 0 +3.9M +26.8%
Other institutions 66 36 27 18 +580K +5.5%

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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