Mntn, Inc.: which funds bought and sold

Institutions that bought and sold Mntn 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, 84 institutions that filed 13F reports for both quarters added to or opened positions in Mntn, and 44 cut or closed them. Together they added a net 7.5M shares, +24.4% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 1.4M shares (−9.1%); index fund managers were net buyers of 6.8M shares (+320.4%). 50 opened a new position and 18 sold out entirely.

Bought, Q2 2026 84 institutions, 50 of them new holders Sold, Q2 2026 44 institutions, 18 of them sold out

Net change, all compared +7.5M shares (+24.4%)

Net change, active managers −1.4M shares (−9.1%), 13 bought, 21 sold

Buyers versus sellers

institutions compared, 142

84 bought 14 44 sold

Active managers and hedge funds 13 bought · 21 sold · −1.4M

Index fund managers 9 bought · 0 sold · +6.8M

Other institutions 62 bought · 23 sold · +2.1M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Blackrock, Inc. Index funds	+4.0M +1527.1%	4.3M	$39.2M
Geode Capital Management, LLC Index funds	+694K +479.3%	839K	$7.7M
D. E. Shaw & Co., Inc. Hedge fund	+681K +143.1%	1.2M	$10.6M
Acadian Asset Management LLC Active manager	+637K +1137.6%	693K	$6.4M
Vanguard Portfolio Management LLC Index funds	+568K +1346.1%	610K	$5.6M
Vanguard Capital Management LLC Index funds	+482K +33.5%	1.9M	$17.7M
State Street Corp Index funds	+425K +875.8%	473K	$4.4M
Morgan Stanley	+340K +241.5%	481K	$4.4M
Bank Of America Corp	+336K +557.0%	396K	$3.6M
FMR LLC Active manager	+317K +11.2%	3.1M	$28.9M
Raymond James Financial Inc	+306K +311.2%	405K	$3.7M
Northern Trust Corp Index funds	+295K +1182.5%	320K	$2.9M
Jump Financial, LLC	+293K +472.0%	356K	$3.3M
Goldman Sachs Group Inc	+286K +202.5%	428K	$3.9M
Clark Estates Inc	+248K New position	248K	$2.3M
Nuveen, LLC	+181K New position	181K	$1.7M
Walleye Capital LLC Hedge fund	+179K New position	179K	$1.6M
Panagora Asset Management Inc Active manager	+165K New position	165K	$1.5M
Ameriprise Financial Inc	+154K New position	154K	$1.4M
Diametric Capital, LP	+144K New position	144K	$1.3M

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
D. E. Shaw & Co., Inc. Hedge fund	+681K +143.1%	1.2M	$10.6M
Acadian Asset Management LLC Active manager	+637K +1137.6%	693K	$6.4M
FMR LLC Active manager	+317K +11.2%	3.1M	$28.9M
Walleye Capital LLC Hedge fund	+179K New position	179K	$1.6M
Panagora Asset Management Inc Active manager	+165K New position	165K	$1.5M
Victory Capital Management Inc Active manager	+113K +108.5%	217K	$2M
Man Group PLC Hedge fund	+73K +27.2%	342K	$3.1M
Algert Global LLC Hedge fund	+67K New position	67K	$615,940
Price T Rowe Associates Inc Active manager	+39K New position	39K	$355,000
Franklin Resources Inc Active manager	+23K New position	23K	$207,772

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Qube Research & Technologies Ltd Hedge fund	−632K −80.6%	152K	$1.4M
Federated Hermes, Inc. Active manager	−620K −89.9%	70K	$644,000
Wellington Management Group LLP Active manager	−579K −9.3%	5.6M	$51.8M
Susquehanna International Group, LLP	−492K −97.4%	13K	$122,719
Millennium Management LLC Hedge fund	−467K −73.8%	165K	$1.5M
Militia Capital Management LLC	−446K −56.1%	350K	$3.2M
Renaissance Technologies LLC Hedge fund	−432K −66.8%	215K	$2M
Mariner, LLC	−291K −80.7%	70K	$642,142
Marshall Wace, LLP Hedge fund	−281K Sold out	0	—
Point72 Asset Management, L.P. Hedge fund	−145K −70.6%	60K	$556,204
UBS Group AG	−112K −65.3%	59K	$547,133
Burkehill Global Management, LP Hedge fund	−100K Sold out	0	—
Citadel Advisors LLC Hedge fund	−89K −14.1%	542K	$5M
Pacer Advisors, Inc.	−88K Sold out	0	—
Zazove Associates LLC	−77K −27.8%	200K	$1.8M
Brevan Howard Capital Management LP Hedge fund	−70K Sold out	0	—
Engineers Gate Manager LP Hedge fund	−54K −35.6%	98K	$897,902
Tudor Investment Corp Et Al Hedge fund	−52K Sold out	0	—
Schonfeld Strategic Advisors LLC Hedge fund	−52K Sold out	0	—
Barclays PLC	−37K −58.8%	26K	$237,204

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Qube Research & Technologies Ltd Hedge fund	−632K −80.6%	152K	$1.4M
Federated Hermes, Inc. Active manager	−620K −89.9%	70K	$644,000
Wellington Management Group LLP Active manager	−579K −9.3%	5.6M	$51.8M
Millennium Management LLC Hedge fund	−467K −73.8%	165K	$1.5M
Renaissance Technologies LLC Hedge fund	−432K −66.8%	215K	$2M
Marshall Wace, LLP Hedge fund	−281K Sold out	0	—
Point72 Asset Management, L.P. Hedge fund	−145K −70.6%	60K	$556,204
Burkehill Global Management, LP Hedge fund	−100K Sold out	0	—
Citadel Advisors LLC Hedge fund	−89K −14.1%	542K	$5M
Brevan Howard Capital Management LP Hedge fund	−70K Sold out	0	—

New positions

largest by value

Institution	Shares	Value June 30, 2026
Clark Estates Inc	248K	$2.3M
Nuveen, LLC	181K	$1.7M
Walleye Capital LLCHedge fund	179K	$1.6M
Panagora Asset Management IncActive manager	165K	$1.5M
Ameriprise Financial Inc	154K	$1.4M
Diametric Capital, LP	144K	$1.3M
Bank Of New York Mellon Corp	96K	$883,199
LPL Financial LLC	89K	$814,356
Susquehanna Portfolio Strategies, LLC	70K	$647,680
Cresset Asset Management, LLC	69K	$637,992

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Marshall Wace, LLPHedge fund	281K	$2.5M
Burkehill Global Management, LPHedge fund	100K	$880,000
Pacer Advisors, Inc.	88K	$771,000
Brevan Howard Capital Management LPHedge fund	70K	$616,062
Tudor Investment Corp Et AlHedge fund	52K	$459,976
Schonfeld Strategic Advisors LLCHedge fund	52K	$454,730
Centiva Capital, LPHedge fund	29K	$252,542
Sandro Wealth Management LLC	28K	$242,000
Jane Street Group, LLC	23K	$198,423
Hudson Bay Capital Management LPHedge fund	21K	$183,401

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 126
Ten largest holders: 69.0%
Index fund managers: 23.1%
Active managers and hedge funds: 35.4%

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	13	21	7	9	−1.4M	−9.1%
Index fund managers	9	0	1	0	+6.8M	+320.4%
Other institutions	62	23	42	9	+2.1M	+15.3%

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 Mntn.

Only managers that filed a holdings report for both quarters are compared (142 here). 2 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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