Hyperfine, Inc.: which funds bought and sold

Institutions that bought and sold Hyperfine 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, 54 institutions that filed 13F reports for both quarters added to or opened positions in Hyperfine, and 15 cut or closed them. Together they added a net 8.0M shares, +58.1% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 772K shares (+67.0%); index fund managers were net buyers of 7.0M shares (+116.8%). 38 opened a new position and 7 sold out entirely.

Bought, Q2 2026 54 institutions, 38 of them new holders Sold, Q2 2026 15 institutions, 7 of them sold out

Net change, all compared +8.0M shares (+58.1%)

Net change, active managers +772K shares (+67.0%), 9 bought, 2 sold

Buyers versus sellers

institutions compared, 87

54 bought 18 15 sold

Active managers and hedge funds 9 bought · 2 sold · +772K

Index fund managers 9 bought · 1 sold · +7.0M

Other institutions 36 bought · 12 sold · +215K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Blackrock, Inc. Index funds	+4.1M +712.8%	4.7M	$6.3M
Geode Capital Management, LLC Index funds	+1.0M +105.3%	2.0M	$2.6M
State Street Corp Index funds	+693K +213.8%	1.0M	$1.4M
Vanguard Portfolio Management LLC Index funds	+547K New position	547K	$738,720
Northern Trust Corp Index funds	+456K +256.9%	633K	$854,623
HRT Financial LP	+374K New position	374K	$505,000
Marshall Wace, LLP Hedge fund	+342K New position	342K	$461,857
Two Sigma Investments, LP Hedge fund	+326K New position	326K	$440,099
Gwn Securities Inc.	+275K New position	275K	$370,814
Renaissance Technologies LLC Hedge fund	+216K +29.5%	946K	$1.3M
Charles Schwab Investment Management Inc Index funds	+190K New position	190K	$256,817
Bank Of New York Mellon Corp	+171K +123.4%	310K	$419,046
Nuveen, LLC	+103K New position	103K	$138,822
Deutsche Bank Ag\	+78K New position	78K	$105,597
Wells Fargo & Company	+71K +2766.8%	74K	$99,889
Price T Rowe Associates Inc Active manager	+64K New position	64K	$87,000
Citigroup Inc	+56K New position	56K	$76,136
Rhumbline Advisers Index funds	+54K New position	54K	$72,642
Invesco Ltd.	+43K New position	43K	$57,422
Vanguard Fiduciary Trust Co Index funds	+40K +7.7%	567K	$765,597

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Marshall Wace, LLP Hedge fund	+342K New position	342K	$461,857
Two Sigma Investments, LP Hedge fund	+326K New position	326K	$440,099
Renaissance Technologies LLC Hedge fund	+216K +29.5%	946K	$1.3M
Price T Rowe Associates Inc Active manager	+64K New position	64K	$87,000
Centiva Capital, LP Hedge fund	+38K +152.7%	63K	$85,097
Intech Investment Management LLC Active manager	+18K New position	18K	$23,842
Alliancebernstein L.P. Active manager	+15K New position	15K	$15,984
Bridgeway Capital Management, LLC Active manager	+8,700 +7.3%	128K	$173,340
FMR LLC Active manager	+477 New position	477	$644

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Sio Capital Management, LLC	−1.0M Sold out	0	—
Walleye Capital LLC Hedge fund	−224K Sold out	0	—
Bank Of America Corp	−193K −81.2%	45K	$60,539
Vanguard Capital Management LLC Index funds	−73K −2.1%	3.4M	$4.6M
Susquehanna International Group, LLP	−38K −57.4%	28K	$37,996
Squarepoint Ops LLC Hedge fund	−31K −57.2%	23K	$31,556
Virtu Financial LLC	−18K Sold out	0	—
Xtx Topco Ltd	−12K −42.4%	16K	$22,131
Two Sigma Securities, LLC	−10K Sold out	0	—
49 Wealth Management, LLC	−10K Sold out	0	—
Simplex Trading, LLC	−9,704 −45.4%	12K	$15,762
Commonwealth Equity Services, LLC	−8,000 −40.2%	12K	$16,075
UBS Group AG	−7,055 −18.8%	30K	$41,079
Group One Trading LLC	−1,572 Sold out	0	—
Caitong International Asset Management Co., Ltd	−2 Sold out	0	—

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Walleye Capital LLC Hedge fund	−224K Sold out	0	—
Squarepoint Ops LLC Hedge fund	−31K −57.2%	23K	$31,556

New positions

largest by value

Institution	Shares	Value June 30, 2026
Vanguard Portfolio Management LLCIndex funds	547K	$738,720
HRT Financial LP	374K	$505,000
Marshall Wace, LLPHedge fund	342K	$461,857
Two Sigma Investments, LPHedge fund	326K	$440,099
Gwn Securities Inc.	275K	$370,814
Charles Schwab Investment Management IncIndex funds	190K	$256,817
Nuveen, LLC	103K	$138,822
Deutsche Bank Ag\	78K	$105,597
Price T Rowe Associates IncActive manager	64K	$87,000
Citigroup Inc	56K	$76,136

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Sio Capital Management, LLC	1.0M	$1.1M
Walleye Capital LLCHedge fund	224K	$241,907
Virtu Financial LLC	18K	$20,000
Two Sigma Securities, LLC	10K	$11,249
49 Wealth Management, LLC	10K	$10,800
Group One Trading LLC	1,572	$1,698
Caitong International Asset Management Co., Ltd	2	$2

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 81
Ten largest holders: 78.6%
Index fund managers: 59.8%
Active managers and hedge funds: 8.8%

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	9	2	6	1	+772K	+67.0%
Index fund managers	9	1	4	0	+7.0M	+116.8%
Other institutions	36	12	28	6	+215K	+3.3%

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 Hyperfine.

Only managers that filed a holdings report for both quarters are compared (87 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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