ATOM · Atomera Inc

$4.77 -0.02 (-0.42%)

Market Cap

$186.93M

39.02M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Quarter:

Holders: 122

Total Value: $197,354,804

Total Shares: 22,658,425

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 122 13F filers · Δ vs Mar 31, 2026

Top Holder

13.2%

−1.1 pts

Top 5

41.3%

−4.0 pts

Top 10

63.8%

−2.7 pts

HHI

536

Broadly held−58

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +14

Institutional value: +211.1%

Shares held: +36.1%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega UBS Group AG	+1,152,963	1,328,824
Mega D. E. Shaw & Co., Inc.	+914,396	1,890,019
Mega JANE STREET GROUP, LLC	+892,115	1,063,691
Mega BlackRock, Inc.	+617,602	2,990,446
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP	+514,307	971,900

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mega CITADEL ADVISORS LLC	−504,537	643,842
Large MARSHALL WACE, LLP	−221,879	266,796
Large BROWN ADVISORY INC	−69,100	31,143
Small Westside Investment Management, Inc.	−31,195	119,682
Mega FMR LLC	−26,639	37,132

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Small Defender Capital, LLC.	295,450	$2,573,369
Large Trexquant Investment LP	225,139	$1,960,960
Mega MILLENNIUM MANAGEMENT LLC	156,629	$1,364,238
Large PEAK6 LLC	119,852	$1,043,910
Small Andar Capital Management HK Ltd	90,000	$783,900

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Small Arosa Capital Management LP	490,000	$1,866,900
Large RENAISSANCE TECHNOLOGIES LLC	163,066	$621,281
Mid Virtu Financial LLC	25,449	$96,960
Small MIRABELLA FINANCIAL SERVICES LLP	23,082	$87,942
Mid IMC-Chicago, LLC	17,873	$68,096

Filter: New 31 Increased 51 Reduced 24 Sold out 17 Unchanged 16

Showing 100 of 129

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

BlackRock, Inc.

$26,046,781

13.20%

2,990,446

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	24,483	$213,246	0.8%	Sole
BlackRock Investment Management, LLC	117,046	$1,019,470	3.9%	Sole
BLACKROCK ADVISORS LLC	82,659	$719,959	2.8%	Sole
BlackRock Fund Advisors	1,481,495	$12,903,821	49.5%	Sole
BlackRock Institutional Trust Company, N.A.	1,252,862	$10,912,428	41.9%	Sole
Aperio Group, LLC	31,901	$277,857	1.1%	Sole

D. E. Shaw & Co., Inc.

$16,462,064

8.34%

1,890,019

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	1,714,252	$14,931,134	90.7%	Defined
D. E. Shaw Investment Management, L.L.C. joint	175,767	$1,530,930	9.3%	Defined

VANGUARD CAPITAL MANAGEMENT LLC

$14,498,361

7.35%

1,664,565

AVENIR CORP

$12,792,028

6.48%

1,468,660

Baird Financial Group, Inc.

$11,679,134

5.92%

1,340,888

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Robert W. Baird & Co. Inc	1,340,888	$11,679,134	100.0%	Defined

UBS Group AG

$11,574,055

5.86%

1,328,824

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	3,654	$31,826	0.3%	Defined
UBS AG	1,310,949	$11,418,365	98.7%	Defined
UBS Switzerland AG	14,000	$121,940	1.1%	Defined
UBS Securities LLC	221	$1,924	0.0%	Defined

GEODE CAPITAL MANAGEMENT, LLC

$8,626,122

4.37%

990,370

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	147,126	$1,281,467	14.9%	Defined
Held directly	843,244	$7,344,655	85.1%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$7,292,883

3.70%

837,300

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	837,300	$7,292,883	100.0%	Other

JANE STREET GROUP, LLC

$7,055,021

3.57%

809,991

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	808,417	$7,041,312	99.8%	Defined
Jane Street Global Trading, LLC	1,574	$13,709	0.2%	Defined

Quantum Private Wealth, LLC

$6,479,325

3.28%

743,895

STATE STREET CORP

$6,252,578

3.17%

717,862

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	717,862	$6,252,578	100.0%	Defined

TWO SIGMA INVESTMENTS, LP

$5,815,379

2.95%

667,667

HOLLENCREST CAPITAL MANAGEMENT

$4,993,146

2.53%

573,266

VANGUARD PORTFOLIO MANAGEMENT LLC

$4,829,276

2.45%

554,452

NORTHERN TRUST CORP

$3,227,933

1.64%

370,601

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	364,578	$3,175,473	98.4%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	6,023	$52,460	1.6%	Other

Connor, Clark & Lunn Investment Management Ltd.

$3,067,705

1.55%

352,205

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	352,205	$3,067,705	100.0%	Sole

CITADEL ADVISORS LLC

$2,822,040

1.43%

324,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	324,000	$2,822,040	100.0%	Defined

Defender Capital, LLC.

$2,573,369

1.30%

295,450

VANGUARD FIDUCIARY TRUST CO

$2,394,901

1.21%

274,960

MORGAN STANLEY

$2,389,969

1.21%

274,394

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	68	$592	0.0%	Defined
MORGAN STANLEY & CO. LLC	13,722	$119,518	5.0%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	46,624	$406,095	17.0%	Defined
MORGAN STANLEY SMITH BARNEY LLC	19,151	$166,805	7.0%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	194,829	$1,696,959	71.0%	Defined

MARSHALL WACE, LLP

$2,323,792

1.18%

266,796

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	266,796	$2,323,792	100.0%	Other

Pathstone Holdings, LLC

$2,185,382

1.11%

250,905

Trexquant Investment LP

$1,960,960

0.99%

225,139

CITADEL ADVISORS LLC

$1,932,242

0.98%

221,842

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	217,845	$1,897,429	98.2%	Defined
Held directly	3,997	$34,813	1.8%	Defined

GOLDMAN SACHS GROUP INC

$1,552,060

0.79%

178,193

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	25,026	$217,976	14.0%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	153,167	$1,334,084	86.0%	Defined

Sargent Investment Group, LLC

$1,532,089

0.78%

175,900

JANE STREET GROUP, LLC

$1,375,309

0.70%

157,900

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	157,900	$1,375,309	100.0%	Defined

MILLENNIUM MANAGEMENT LLC

$1,364,238

0.69%

156,629

AQR CAPITAL MANAGEMENT LLC

$1,201,498

0.61%

137,945

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RF&L WEALTH MANAGEMENT, LLC	13	$113	0.0%	Other
Prism Planning Partners LLC	80	$696	0.1%	Other
Compound Planning, Inc.	2	$17	0.0%	Other
Arax Advisory Partners	7,034	$61,266	5.1%	Other
HALBERT HARGROVE GLOBAL ADVISORS, LLC	895	$7,795	0.6%	Other
Stokes Family Office, LLC	208	$1,811	0.2%	Other
Held directly	129,713	$1,129,800	94.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$1,172,366

0.59%

134,600

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	134,600	$1,172,366	100.0%	Other

Westside Investment Management, Inc.

$1,042,430

0.53%

119,682

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$987,461

0.50%

113,371

PEAK6 LLC

$963,326

0.49%

110,600

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PEAK6 Investments LLC joint	110,600	$963,326	100.0%	Defined

CITADEL ADVISORS LLC

$853,580

0.43%

98,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	98,000	$853,580	100.0%	Defined

JANE STREET GROUP, LLC

$834,418

0.42%

95,800

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	95,800	$834,418	100.0%	Defined

Bank of New York Mellon Corp

$820,314

0.42%

94,181

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	24,054	$209,510	25.5%	Defined
The Bank of New York Mellon	59,481	$518,079	63.2%	Defined
BNY Mellon, NA joint	10,645	$92,717	11.3%	Defined
Held directly	1	$8	0.0%	Defined

Andar Capital Management HK Ltd

$783,900

0.40%

90,000

PRICE T ROWE ASSOCIATES INC /MD/

$646,151

0.33%

74,185

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
T. Rowe Price International Ltd	74,185	$646,151	100.0%	Defined

GROUP ONE TRADING LLC

$640,150

0.32%

73,496

Nuveen, LLC

$639,165

0.32%

73,383

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Nuveen Asset Management, LLC joint	22,644	$197,229	30.9%	Defined
TEACHERS ADVISORS, LLC joint	50,739	$441,936	69.1%	Defined

GSA CAPITAL PARTNERS LLP

$622,373

0.32%

71,455

Informed Momentum Co LLC

$620,683

0.31%

71,261

Numerai GP LLC

$547,179

0.28%

62,822

PCM Encore, LLC

$455,184

0.23%

52,260

BANK OF AMERICA CORP /DE/

$413,062

0.21%

47,424

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	31,373	$273,258	66.2%	Defined
BOFA SECURITIES, INC.	16,051	$139,804	33.8%	Defined

RHUMBLINE ADVISERS

$382,900

0.19%

43,961

SEI INVESTMENTS CO

$367,683

0.19%

42,214

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SEI TRUST CO	42,214	$367,683	100.0%	Sole

Vanguard Global Advisers, LLC

$366,760

0.19%

42,108

DEUTSCHE BANK AG\

$332,468

0.17%

38,171

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS INVESTMENT MANAGEMENT AMERICAS, INC	795	$6,924	2.1%	Defined
DWS Investments UK Ltd	37,376	$325,544	97.9%	Defined

FMR LLC

$323,419

0.16%

37,132

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	37,131	$323,411	100.0%	Defined
STRATEGIC ADVISERS LLC	1	$8	0.0%	Defined

WELLS FARGO & COMPANY/MN

$315,763

0.16%

36,253

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	34,664	$301,923	95.6%	Defined
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	800	$6,968	2.2%	Defined
WELLS FARGO CLEARING SERVICES, LLC	500	$4,355	1.4%	Defined
Wells Fargo Securities, LLC	289	$2,517	0.8%	Defined

XTX Topco Ltd

$308,525

0.16%

35,422

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	35,422	$308,525	100.0%	Defined

COMMONWEALTH EQUITY SERVICES, LLC

$300,251

0.15%

34,472

CHANNEL WEALTH LLC

$298,753

0.15%

34,300

ALLIANCEBERNSTEIN L.P.

$293,527

0.15%

33,700

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	33,700	$293,527	100.0%	Defined

Invesco Ltd.

$272,613

0.14%

31,299

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Advisers, Inc. joint	5,665	$49,342	18.1%	Defined
Invesco Trust Co joint	15,089	$131,425	48.2%	Defined
Invesco Capital Management LLC	10,545	$91,846	33.7%	Defined

BROWN ADVISORY INC

$271,255

0.14%

31,143

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Brown Advisory LLC	31,143	$271,255	100.0%	Defined

HighTower Advisors, LLC

$262,589

0.13%

30,148

Arax Advisory Partners

$260,219

0.13%

29,876

LPL Financial LLC

$253,330

0.13%

29,085

CITIGROUP INC

$239,794

0.12%

27,531

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	27,531	$239,794	100.0%	Defined

Concentric Capital Strategies, LP

$221,686

0.11%

25,452

MetLife Investment Management, LLC

$199,450

0.10%

22,899

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
METLIFE INC	22,899	$199,450	100.0%	Defined

CANADA PENSION PLAN INVESTMENT BOARD

$178,555

0.09%

20,500

Sequoia Financial Advisors, LLC

$175,793

0.09%

20,183

ADVISORY RESEARCH INC

$174,200

0.09%

20,000

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$153,687

0.08%

17,645

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Global X Management CO LLC joint	17,645	$153,687	100.0%	Defined

NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO

$149,106

0.08%

17,119

Creative Planning

$147,904

0.07%

16,981

JPMORGAN CHASE & CO

$146,527

0.07%

16,823

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	16,408	$142,913	97.5%	Defined
J.P. Morgan Investment Management Inc.	60	$522	0.4%	Defined
J.P. Morgan Securities plc	355	$3,092	2.1%	Defined

Vanguard Personalized Indexing Management, LLC

$141,493

0.07%

16,245

Centiva Capital, LP

$137,130

0.07%

15,744

nVerses Capital, LLC

$125,267

0.06%

14,382

OSAIC HOLDINGS, INC.

$118,865

0.06%

13,647

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	3,647	$31,765	26.7%	Defined
CW Advisors, LLC	10,000	$87,100	73.3%	Sole

Russell Investments Group, Ltd.

$118,403

0.06%

13,594

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC	13,594	$118,403	100.0%	Defined

Rathbones Group PLC

$117,454

0.06%

13,485

Abel Hall, LLC

$113,465

0.06%

13,027

Police & Firemen's Retirement System of New Jersey

$113,203

0.06%

12,997

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Capital	12,997	$113,203	100.0%	Defined

Entropy Technologies, LP

$107,855

0.05%

12,383

INTECH INVESTMENT MANAGEMENT LLC

$104,154

0.05%

11,958

State of Wyoming

$98,623

0.05%

11,323

Point72 Asset Management, L.P.

$91,733

0.05%

10,532

Gleason Group, Inc.

$91,455

0.05%

10,500

MANUFACTURERS LIFE INSURANCE COMPANY, THE

$88,563

0.04%

10,168

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MANULIFE FINANCIAL CORP joint	10,168	$88,563	100.0%	Defined

Foundations Investment Advisors, LLC

$87,100

0.04%

10,000

SLT Holdings LLC

$87,100

0.04%

10,000

SCS Capital Management LLC

$87,100

0.04%

10,000

MARATHON CAPITAL MANAGEMENT

$87,100

0.04%

10,000

BARCLAYS PLC

$82,509

0.04%

9,473

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	4,891	$42,600	51.6%	Defined
BARCLAYS CAPITAL INC.	4,582	$39,909	48.4%	Defined

PEAK6 LLC

$80,584

0.04%

9,252

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PEAK6 Investments LLC joint	9,252	$80,584	100.0%	Defined

BNP PARIBAS ARBITRAGE, SA

$64,802

0.03%

7,440

NEW YORK STATE COMMON RETIREMENT FUND

$64,454

0.03%

7,400

ROYAL BANK OF CANADA

$56,901

0.03%

6,533

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC CMA LTD.	1,160	$10,103	17.8%	Defined
RBC Capital Markets, LLC	5,373	$46,798	82.2%	Defined

Smithfield Trust Co

$56,135

0.03%

6,445

Smartleaf Asset Management LLC

$52,260

0.03%

6,000

Legal & General Group Plc

$32,357

0.02%

3,715

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Legal & General Investment Management America Inc	3,715	$32,357	100.0%	Defined

NFSG Corp

$28,743

0.01%

3,300

Ameritas Investment Partners, Inc.

$26,025

0.01%

2,988

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
EATON VANCE MANAGEMENT	2,988	$26,025	100.0%	Other

Integrated Wealth Concepts LLC

$21,626

0.01%

2,483

JONES FINANCIAL COMPANIES LLLP

$16,627

0.01%

1,909

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Edward D. Jones & Co., L.P.	1,909	$16,627	100.0%	Sole

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	1,725	$15,024	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PNC Bank, National Association	1,113	$9,694	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Group AG	897	$7,812	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
ROCKEFELLER TRUST COMPANY, N.A.	876	$7,629	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BMSS Wesson Wealth Solutions, LLC	1	$8	0.2%	Sole
Held directly	549	$4,781	99.8%	Sole

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
National Bank Financial Inc.	36	$313	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Desjardins Securities inc.	28	$243	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Virtu Americas LLC	25,449	$96,960	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1 joint	100	$381	100.0%	Sole

Key facts CIK 1420520 CUSIP 04965B100 13F (30d) 113 filings 112 filers Visit website Investor relations