Supermicro: which funds bought and sold

Institutions that bought and sold Supermicro 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, 433 institutions that filed 13F reports for both quarters added to or opened positions in Supermicro, and 307 cut or closed them. Together they added a net 106.4M shares, +31.5% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 38.0M shares (+142.2%); index fund managers were net buyers of 16.3M shares (+10.5%). 133 opened a new position and 76 sold out entirely.

Bought, Q2 2026 433 institutions, 133 of them new holders Sold, Q2 2026 307 institutions, 76 of them sold out

Net change, all compared +106.4M shares (+31.5%)

Net change, active managers +38.0M shares (+142.2%), 40 bought, 22 sold

Buyers versus sellers

institutions compared, 823

433 bought 83 307 sold

Active managers and hedge funds 40 bought · 22 sold · +38.0M

Index fund managers 11 bought · 1 sold · +16.3M

Other institutions 382 bought · 284 sold · +52.2M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Jane Street Group, LLC	+24.4M +551.4%	28.8M	$844M
Two Sigma Investments, LP Hedge fund	+8.9M +978.8%	9.8M	$287M
Goldman Sachs Group Inc	+7.6M +221.9%	11.1M	$325M
UBS Group AG	+7.6M +63.1%	19.7M	$578M
Renaissance Technologies LLC Hedge fund	+6.7M +11323.6%	6.8M	$199M
Point72 Asset Management, L.P. Hedge fund	+4.7M +14760.3%	4.8M	$139M
Ghisallo Capital Management LLC Hedge fund	+4.4M New position	4.4M	$128M
Blackrock, Inc. Index funds	+4.3M +10.0%	47.7M	$1.4B
Assenagon Asset Management S.A.	+4.2M +3640.9%	4.3M	$128M
Vanguard Capital Management LLC Index funds	+3.5M +10.5%	36.4M	$1.1B
Vanguard Portfolio Management LLC Index funds	+3.3M +11.1%	32.9M	$964M
D. E. Shaw & Co., Inc. Hedge fund	+2.9M +784.1%	3.2M	$95M
Balyasny Asset Management L.P. Hedge fund	+2.8M New position	2.8M	$83.3M
State Street Corp Index funds	+2.6M +11.9%	24.6M	$723M
Imc-Chicago, LLC	+2.6M +357.1%	3.3M	$97.4M
Healthcare Of Ontario Pension Plan Trust Fund	+2.5M +2741.3%	2.6M	$77.3M
Alyeska Investment Group, L.P. Hedge fund	+2.4M New position	2.4M	$70.7M
FMR LLC Active manager	+2.4M +672.0%	2.8M	$80.8M
AQR Capital Management LLC Hedge fund	+2.3M +1190.0%	2.5M	$72.6M
Quadrature Capital Ltd Hedge fund	+2.3M +305.5%	3.0M	$87.7M

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Two Sigma Investments, LP Hedge fund	+8.9M +978.8%	9.8M	$287M
Renaissance Technologies LLC Hedge fund	+6.7M +11323.6%	6.8M	$199M
Point72 Asset Management, L.P. Hedge fund	+4.7M +14760.3%	4.8M	$139M
Ghisallo Capital Management LLC Hedge fund	+4.4M New position	4.4M	$128M
D. E. Shaw & Co., Inc. Hedge fund	+2.9M +784.1%	3.2M	$95M
Balyasny Asset Management L.P. Hedge fund	+2.8M New position	2.8M	$83.3M
Alyeska Investment Group, L.P. Hedge fund	+2.4M New position	2.4M	$70.7M
FMR LLC Active manager	+2.4M +672.0%	2.8M	$80.8M
AQR Capital Management LLC Hedge fund	+2.3M +1190.0%	2.5M	$72.6M
Quadrature Capital Ltd Hedge fund	+2.3M +305.5%	3.0M	$87.7M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Defiance Etfs, LLC	−6.2M Sold out	0	—
Wells Fargo & Company	−4.3M −86.0%	696K	$20.4M
Marshall Wace, LLP Hedge fund	−2.6M −35.7%	4.6M	$135M
Hawk Ridge Capital Management LP Hedge fund	−2.3M Sold out	0	—
Disciplined Growth Investors Inc Active manager	−2.3M −46.6%	2.7M	$78.1M
Canada Pension Plan Investment Board	−1.3M −47.8%	1.4M	$42M
Weiss Asset Management LP	−1.3M −89.9%	141K	$4.1M
Legal & General Group PLC	−787K −19.8%	3.2M	$93.6M
Walleye Trading LLC	−724K −99.7%	1,900	$55,727
Barclays PLC	−682K −18.8%	3.0M	$86.6M
Natixis	−629K −62.7%	374K	$11M
Nomura Holdings Inc	−592K −83.1%	120K	$3.5M
Dimensional Fund Advisors LP	−514K −12.6%	3.6M	$105M
Ardmore Road Asset Management LP	−492K −93.6%	34K	$982,555
Jpmorgan Chase & Co	−486K −24.2%	1.5M	$42.8M
Engineers Gate Manager LP Hedge fund	−480K −96.2%	19K	$562,432
Group One Trading LLC	−342K −63.5%	197K	$5.8M
Ensign Peak Advisors, Inc	−287K −79.0%	76K	$2.2M
Herald Investment Management Ltd	−278K −39.7%	422K	$12.4M
Centiva Capital, LP Hedge fund	−272K −80.4%	66K	$1.9M

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Marshall Wace, LLP Hedge fund	−2.6M −35.7%	4.6M	$135M
Hawk Ridge Capital Management LP Hedge fund	−2.3M Sold out	0	—
Disciplined Growth Investors Inc Active manager	−2.3M −46.6%	2.7M	$78.1M
Engineers Gate Manager LP Hedge fund	−480K −96.2%	19K	$562,432
Centiva Capital, LP Hedge fund	−272K −80.4%	66K	$1.9M
Grantham, Mayo, Van Otterloo & Co. LLC Active manager	−192K Sold out	0	—
Exoduspoint Capital Management, LP Hedge fund	−151K Sold out	0	—
Gotham Asset Management, LLC Hedge fund	−142K −78.8%	38K	$1.1M
Schonfeld Strategic Advisors LLC Hedge fund	−130K −17.2%	623K	$18.3M
Walleye Capital LLC Hedge fund	−81K −66.9%	40K	$1.2M

New positions

largest by value

Institution	Shares	Value June 30, 2026
Ghisallo Capital Management LLCHedge fund	4.4M	$128M
Balyasny Asset Management L.P.Hedge fund	2.8M	$83.3M
Alyeska Investment Group, L.P.Hedge fund	2.4M	$70.7M
Connor, Clark & Lunn Investment Management Ltd.	1.6M	$47.9M
Voloridge Investment Management, LLCHedge fund	510K	$15M
Seven Grand Managers, LLC	500K	$14.7M
Holocene Advisors, LPHedge fund	426K	$12.5M
Susquehanna Fundamental Investments, LLC	365K	$10.7M
Virginia Retirement Systems Et Al	287K	$8.4M
Tairen Capital Ltd	238K	$7M

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Defiance Etfs, LLC	6.2M	$142M
Hawk Ridge Capital Management LPHedge fund	2.3M	$52.9M
Quinn Opportunity Partners LLC	235K	$5.4M
Tredje Ap-Fonden	200K	$4.6M
Grantham, Mayo, Van Otterloo & Co. LLCActive manager	192K	$4.4M
Exoduspoint Capital Management, LPHedge fund	151K	$3.4M
Varma Mutual Pension Insurance Co	147K	$3.4M
USS Investment Management Ltd	122K	$2.8M
Twinbeech Capital LP	94K	$2.1M
Wolverine Asset Management LLC	92K	$2.1M

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 763
Ten largest holders: 52.9%
Index fund managers: 37.9%
Active managers and hedge funds: 14.3%

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	40	22	11	6	+38.0M	+142.2%
Index fund managers	11	1	0	0	+16.3M	+10.5%
Other institutions	382	284	122	70	+52.2M	+33.4%

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 Supermicro.

Only managers that filed a holdings report for both quarters are compared (823 here). 27 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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