Black Diamond Therapeutics, Inc.: which funds bought and sold

Institutions that bought and sold Black Diamond 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, 60 institutions that filed 13F reports for both quarters added to or opened positions in Black Diamond Therapeutics, and 54 cut or closed them. Together they sold a net 3.4M shares, −8.9% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 8.6M shares (−40.5%); index fund managers were net buyers of 4.5M shares (+98.1%). 25 opened a new position and 31 sold out entirely.

Bought, Q2 2026 60 institutions, 25 of them new holders Sold, Q2 2026 54 institutions, 31 of them sold out

Net change, all compared −3.4M shares (−8.9%)

Net change, active managers −8.6M shares (−40.5%), 12 bought, 17 sold

Buyers versus sellers

institutions compared, 125

60 bought 11 54 sold

Active managers and hedge funds 12 bought · 17 sold · −8.6M

Index fund managers 8 bought · 2 sold · +4.5M

Other institutions 40 bought · 35 sold · +652K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Blackrock, Inc. Index funds	+2.8M +253.9%	3.9M	$7.2M
Defilade Capital Management, L.P.	+1.7M New position	1.7M	$3.1M
Geode Capital Management, LLC Index funds	+682K +127.0%	1.2M	$2.3M
Awm Investment Company, Inc.	+475K +90.5%	1.0M	$1.9M
Renaissance Technologies LLC Hedge fund	+319K +19.4%	2.0M	$3.6M
Vanguard Portfolio Management LLC Index funds	+314K +336.9%	407K	$753,087
State Street Corp Index funds	+312K +145.9%	525K	$971,274
Bank Of America Corp	+299K +262.3%	414K	$765,004
Panagora Asset Management Inc Active manager	+295K New position	295K	$546,068
Vanguard Capital Management LLC Index funds	+275K +14.9%	2.1M	$3.9M
Jane Street Group, LLC	+195K +205.5%	290K	$535,967
Morgan Stanley	+143K +160.9%	231K	$427,720
Bank Of New York Mellon Corp	+130K +68.5%	319K	$589,713
O'Shaughnessy Asset Management, LLC Active manager	+107K +58.5%	289K	$534,411
Charles Schwab Investment Management Inc Index funds	+93K +643.5%	108K	$199,223
Bridgeway Capital Management, LLC Active manager	+68K +9.4%	791K	$1.5M
Rb Capital Management, LLC	+65K +185.7%	100K	$185,000
Nuveen, LLC	+65K New position	65K	$119,882
Dimensional Fund Advisors LP	+64K +4.9%	1.4M	$2.5M
Marshall Wace, LLP Hedge fund	+60K +7.2%	897K	$1.7M

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Renaissance Technologies LLC Hedge fund	+319K +19.4%	2.0M	$3.6M
Panagora Asset Management Inc Active manager	+295K New position	295K	$546,068
O'Shaughnessy Asset Management, LLC Active manager	+107K +58.5%	289K	$534,411
Bridgeway Capital Management, LLC Active manager	+68K +9.4%	791K	$1.5M
Marshall Wace, LLP Hedge fund	+60K +7.2%	897K	$1.7M
Price T Rowe Associates Inc Active manager	+39K New position	39K	$73,000
Quadrature Capital Ltd Hedge fund	+39K +104.7%	77K	$141,906
Alliancebernstein L.P. Active manager	+32K New position	32K	$68,884
Balyasny Asset Management L.P. Hedge fund	+31K +6.1%	542K	$1M
FMR LLC Active manager	+20K +3.2%	644K	$1.2M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
T. Rowe Price Investment Management, Inc. Active manager	−6.5M −61.9%	4.0M	$7.5M
Mackenzie Financial Corp	−845K Sold out	0	—
Arrowstreet Capital, Limited Partnership Hedge fund	−569K −68.2%	266K	$491,290
Man Group PLC Hedge fund	−560K Sold out	0	—
Winton Group Ltd Hedge fund	−538K Sold out	0	—
Citadel Advisors LLC Hedge fund	−503K Sold out	0	—
Goldman Sachs Group Inc	−396K −57.8%	289K	$534,243
Globeflex Capital L P	−305K Sold out	0	—
UBS Group AG	−300K −53.0%	265K	$490,830
Round Rock Advisors LLC	−274K Sold out	0	—
683 Capital Management, LLC Hedge fund	−248K Sold out	0	—
D. E. Shaw & Co., Inc. Hedge fund	−207K −56.8%	157K	$291,079
TD Asset Management Inc	−196K Sold out	0	—
Susquehanna Portfolio Strategies, LLC	−174K Sold out	0	—
Millennium Management LLC Hedge fund	−135K Sold out	0	—
Graham Capital Management, L.P. Hedge fund	−117K −68.3%	54K	$100,329
Canada Pension Plan Investment Board	−108K −51.0%	104K	$191,660
Point72 Asset Management, L.P. Hedge fund	−101K Sold out	0	—
Northern Trust Corp Index funds	−99K −21.4%	365K	$675,979
Omers Administration Corp	−63K Sold out	0	—

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
T. Rowe Price Investment Management, Inc. Active manager	−6.5M −61.9%	4.0M	$7.5M
Arrowstreet Capital, Limited Partnership Hedge fund	−569K −68.2%	266K	$491,290
Man Group PLC Hedge fund	−560K Sold out	0	—
Winton Group Ltd Hedge fund	−538K Sold out	0	—
Citadel Advisors LLC Hedge fund	−503K Sold out	0	—
683 Capital Management, LLC Hedge fund	−248K Sold out	0	—
D. E. Shaw & Co., Inc. Hedge fund	−207K −56.8%	157K	$291,079
Millennium Management LLC Hedge fund	−135K Sold out	0	—
Graham Capital Management, L.P. Hedge fund	−117K −68.3%	54K	$100,329
Point72 Asset Management, L.P. Hedge fund	−101K Sold out	0	—

New positions

largest by value

Institution	Shares	Value June 30, 2026
Defilade Capital Management, L.P.	1.7M	$3.1M
Panagora Asset Management IncActive manager	295K	$546,068
Nuveen, LLC	65K	$119,882
Deutsche Bank Ag\	46K	$85,170
Wells Fargo & Company	40K	$73,177
Price T Rowe Associates IncActive manager	39K	$73,000
Alliancebernstein L.P.Active manager	32K	$68,884
Rhumbline AdvisersIndex funds	37K	$68,065
New York State Common Retirement Fund	30K	$56,055
Efg International AG	27K	$49,950

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Mackenzie Financial Corp	845K	$1.8M
Man Group PLCHedge fund	560K	$1.2M
Winton Group LtdHedge fund	538K	$1.1M
Citadel Advisors LLCHedge fund	503K	$1.1M
Globeflex Capital L P	305K	$650,238
Round Rock Advisors LLC	274K	$584,402
683 Capital Management, LLCHedge fund	248K	$528,151
TD Asset Management Inc	196K	$417,331
Susquehanna Portfolio Strategies, LLC	174K	$369,868
Millennium Management LLCHedge fund	135K	$287,505

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 95
Ten largest holders: 69.0%
Index fund managers: 25.7%
Active managers and hedge funds: 35.9%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	12	17	5	10	−8.6M	−40.5%
Index fund managers	8	2	1	1	+4.5M	+98.1%
Other institutions	40	35	19	20	+652K	+5.1%

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.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Black Diamond Therapeutics.

Only managers that filed a holdings report for both quarters are compared (125 here). 3 other holders are left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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