Atomera Inc: which funds bought and sold

Institutions that bought and sold Atomera 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, 82 institutions that filed 13F reports for both quarters added to or opened positions in Atomera, and 39 cut or closed them. Together they added a net 4.8M shares, +29.9% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 204K shares (+5.7%); index fund managers were net buyers of 1.9M shares (+32.7%). 32 opened a new position and 16 sold out entirely.

Bought, Q2 2026 82 institutions, 32 of them new holders Sold, Q2 2026 39 institutions, 16 of them sold out

Net change, all compared +4.8M shares (+29.9%)

Net change, active managers +204K shares (+5.7%), 10 bought, 6 sold

Buyers versus sellers

institutions compared, 137

82 bought 16 39 sold

Active managers and hedge funds 10 bought · 6 sold · +204K

Index fund managers 9 bought · 1 sold · +1.9M

Other institutions 63 bought · 32 sold · +2.7M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
UBS Group AG	+1.2M +655.6%	1.3M	$11.6M
D. E. Shaw & Co., Inc. Hedge fund	+914K +93.7%	1.9M	$16.5M
Jane Street Group, LLC	+650K +407.3%	810K	$7.1M
Blackrock, Inc. Index funds	+618K +26.0%	3.0M	$26M
Vanguard Capital Management LLC Index funds	+376K +29.2%	1.7M	$14.5M
Vanguard Portfolio Management LLC Index funds	+375K +209.8%	554K	$4.8M
Connor, Clark & Lunn Investment Management Ltd.	+331K +1570.2%	352K	$3.1M
Defender Capital, Llc.	+295K New position	295K	$2.6M
Trexquant Investment LP Hedge fund	+225K New position	225K	$2M
Geode Capital Management, LLC Index funds	+221K +28.7%	990K	$8.6M
Millennium Management LLC Hedge fund	+157K New position	157K	$1.4M
Quantum Private Wealth, LLC	+146K +24.3%	744K	$6.5M
State Street Corp Index funds	+140K +24.2%	718K	$6.3M
Two Sigma Investments, LP Hedge fund	+138K +26.0%	668K	$5.8M
Andar Capital Management Hk Ltd	+90K New position	90K	$783,900
Northern Trust Corp Index funds	+82K +28.4%	371K	$3.2M
Gsa Capital Partners LLP	+71K New position	71K	$622,000
Informed Momentum Co LLC	+71K New position	71K	$620,683
Baird Financial Group, Inc.	+63K +4.9%	1.3M	$11.7M
Numerai Gp LLC	+63K New position	63K	$547,180

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
D. E. Shaw & Co., Inc. Hedge fund	+914K +93.7%	1.9M	$16.5M
Trexquant Investment LP Hedge fund	+225K New position	225K	$2M
Millennium Management LLC Hedge fund	+157K New position	157K	$1.4M
Two Sigma Investments, LP Hedge fund	+138K +26.0%	668K	$5.8M
Price T Rowe Associates Inc Active manager	+20K +37.3%	74K	$647,000
Centiva Capital, LP Hedge fund	+16K New position	16K	$137,130
AQR Capital Management LLC Hedge fund	+14K +11.7%	138K	$1.2M
Intech Investment Management LLC Active manager	+12K New position	12K	$104,154
Point72 Asset Management, L.P. Hedge fund	+11K New position	11K	$91,734
Alliancebernstein L.P. Active manager	+6,500 +23.9%	34K	$128,397

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Citadel Advisors LLC Hedge fund	−828K −78.9%	222K	$1.9M
Arosa Capital Management LP	−490K Sold out	0	—
Marshall Wace, LLP Hedge fund	−222K −45.4%	267K	$2.3M
Renaissance Technologies LLC Hedge fund	−163K Sold out	0	—
Brown Advisory Inc Active manager	−69K −68.9%	31K	$271,256
Westside Investment Management, Inc.	−31K −20.7%	120K	$1M
FMR LLC Active manager	−27K −41.8%	37K	$323,422
Virtu Financial LLC	−25K Sold out	0	—
Hollencrest Capital Management	−24K −4.0%	573K	$5M
Mirabella Financial Services LLP	−23K Sold out	0	—
Commonwealth Equity Services, LLC	−22K −39.4%	34K	$300,250
Goldman Sachs Group Inc	−20K −9.9%	178K	$1.6M
Imc-Chicago, LLC	−18K Sold out	0	—
New York State Common Retirement Fund	−12K −61.7%	7,400	$64,454
Susquehanna International Group, LLP	−11K Sold out	0	—
Act Wealth Management, LLC	−10K Sold out	0	—
Group One Trading LLC	−9,620 −11.6%	73K	$640,150
Ghp Investment Advisors, Inc.	−4,433 Sold out	0	—
Channel Wealth LLC	−4,200 −10.9%	34K	$298,753
Foundations Investment Advisors, LLC	−2,500 −20.0%	10K	$87,100

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Citadel Advisors LLC Hedge fund	−828K −78.9%	222K	$1.9M
Marshall Wace, LLP Hedge fund	−222K −45.4%	267K	$2.3M
Renaissance Technologies LLC Hedge fund	−163K Sold out	0	—
Brown Advisory Inc Active manager	−69K −68.9%	31K	$271,256
FMR LLC Active manager	−27K −41.8%	37K	$323,422
Quantbot Technologies LP Hedge fund	−100 Sold out	0	—

New positions

largest by value

Institution	Shares	Value June 30, 2026
Defender Capital, Llc.	295K	$2.6M
Trexquant Investment LPHedge fund	225K	$2M
Millennium Management LLCHedge fund	157K	$1.4M
Andar Capital Management Hk Ltd	90K	$783,900
Gsa Capital Partners LLP	71K	$622,000
Informed Momentum Co LLC	71K	$620,683
Numerai Gp LLC	63K	$547,180
Sei Investments Co	42K	$367,684
Xtx Topco Ltd	35K	$308,526
Concentric Capital Strategies, LP	25K	$221,687

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Arosa Capital Management LP	490K	$1.9M
Renaissance Technologies LLCHedge fund	163K	$621,281
Virtu Financial LLC	25K	$97,000
Mirabella Financial Services LLP	23K	$87,942
Imc-Chicago, LLC	18K	$68,096
Susquehanna International Group, LLP	11K	$42,264
Act Wealth Management, LLC	10K	$38,100
Ghp Investment Advisors, Inc.	4,433	$16,890
Summit Securities Group LLC	1,514	$5,768
Simplex Trading, LLC	648	$2,468

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 121
Ten largest holders: 66.7%
Index fund managers: 37.0%
Active managers and hedge funds: 18.1%

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	10	6	5	2	+204K	+5.7%
Index fund managers	9	1	0	0	+1.9M	+32.7%
Other institutions	63	32	27	14	+2.7M	+40.5%

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.

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 Atomera.

Only managers that filed a holdings report for both quarters are compared (137 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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