ATOMERA INC (ATOM) Institutional Shareholders
ATOMERA INC (ATOM) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $180.06M in ATOM holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of ATOM tracked by InsiderSet, reporting ownership valued at approximately $26.05M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $11.90M, representing an estimated loss of -54.31% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 67% of the total disclosed ATOM value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., D. E. Shaw & Co., Inc., Vanguard Capital Management Llc, and several other long-term asset managers with concentrated positions in ATOMERA INC (ATOM).
This page ranks the largest institutional ATOM shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
118
Total Reported Value
$180.06M
Largest Holder
Blackrock, Inc.
Largest Position
$26.05M
Insider Transactions (90d)
16
Latest Filing Quarter
Q2 2026
New Institutional Positions
147
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 2,990,446 | $26,046,785 | $11,901,975 | -$14,144,810 | -54.31% | |
| D. E. Shaw & Co., Inc. | 0.01% | 1,890,019 | $16,462,066 | $7,522,276 | -$8,939,790 | -54.31% | |
| Vanguard Capital Management Llc | 0.00% | 1,664,565 | $14,498,361 | $6,624,969 | -$7,873,392 | -54.31% | |
| Avenir Corp | 1.56% | 1,468,660 | $12,792,029 | $5,845,267 | -$6,946,762 | -54.31% | |
| Baird Financial Group, Inc. | 0.02% | 1,340,888 | $11,679,134 | $5,336,734 | -$6,342,400 | -54.31% | |
| Ubs Group Ag | 0.00% | 1,328,824 | $11,574,057 | $5,288,720 | -$6,285,337 | -54.31% | |
| Geode Capital Management, Llc | 0.00% | 990,370 | $8,628,227 | $3,941,673 | -$4,686,554 | -54.32% | |
| Jane Street Group, Llc | 0.00% | 809,991 | $7,055,022 | $3,223,764 | -$3,831,258 | -54.31% | |
| Quantum Private Wealth, Llc | 1.66% | 743,895 | $6,479,329 | $2,960,702 | -$3,518,627 | -54.31% | |
| State Street Corp | 0.00% | 717,862 | $6,252,578 | $2,857,091 | -$3,395,487 | -54.31% | |
| Two Sigma Investments, Lp | 0.00% | 667,667 | $5,815,380 | $2,657,315 | -$3,158,065 | -54.31% | |
| Hollencrest Capital Management | 0.33% | 573,266 | $4,993,147 | $2,281,599 | -$2,711,548 | -54.31% | |
| Vanguard Portfolio Management Llc | 0.00% | 554,452 | $4,829,277 | $2,206,719 | -$2,622,558 | -54.31% | |
| Northern Trust Corp | 0.00% | 370,601 | $3,227,935 | $1,474,992 | -$1,752,943 | -54.31% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.01% | 352,205 | $3,067,706 | $1,401,776 | -$1,665,930 | -54.31% | |
| Defender Capital, Llc. | 0.84% | 295,450 | $2,573,370 | $1,175,891 | -$1,397,479 | -54.31% | |
| Vanguard Fiduciary Trust Co | 0.00% | 274,960 | $2,394,902 | $1,094,341 | -$1,300,561 | -54.31% | |
| Morgan Stanley | 0.00% | 274,394 | $2,389,972 | $1,092,088 | -$1,297,884 | -54.31% | |
| Marshall Wace, Llp | 0.00% | 266,796 | $2,323,793 | $1,061,848 | -$1,261,945 | -54.31% | |
| Trexquant Investment Lp | 0.01% | 225,139 | $1,960,961 | $896,053 | -$1,064,908 | -54.31% | |
| Citadel Advisors Llc | 0.00% | 221,842 | $1,932,244 | $882,931 | -$1,049,313 | -54.31% | |
| Goldman Sachs Group Inc | 0.00% | 178,193 | $1,552,061 | $709,208 | -$842,853 | -54.31% | |
| Sargent Investment Group, Llc | 0.18% | 175,900 | $1,532,089 | $700,082 | -$832,007 | -54.31% | |
| Millennium Management Llc | 0.00% | 156,629 | $1,364,239 | $623,383 | -$740,856 | -54.31% | |
| Aqr Capital Management Llc | 0.00% | 137,945 | $1,201,500 | $549,021 | -$652,479 | -54.31% | |
| Westside Investment Management, Inc. | 0.14% | 119,682 | $1,042,436 | $476,334 | -$566,102 | -54.31% | |
| Charles Schwab Investment Management Inc | 0.00% | 113,371 | $987,461 | $451,217 | -$536,244 | -54.31% | |
| Pathstone Holdings, Llc | 0.00% | 250,905 | $955,949 | $998,602 | +$42,653 | +4.46% | |
| Bank Of New York Mellon Corp | 0.00% | 94,181 | $820,319 | $374,840 | -$445,479 | -54.31% | |
| Andar Capital Management Hk Ltd | 0.35% | 90,000 | $783,900 | $358,200 | -$425,700 | -54.31% | |
| Price T Rowe Associates Inc | 0.00% | 74,185 | $647,000 | $295,256 | -$351,744 | -54.37% | |
| Group One Trading Llc | 0.02% | 73,496 | $640,150 | $292,514 | -$347,636 | -54.31% | |
| Nuveen, Llc | 0.00% | 73,383 | $639,166 | $292,064 | -$347,102 | -54.31% | |
| Gsa Capital Partners Llp | 0.04% | 71,455 | $622,000 | $284,391 | -$337,609 | -54.28% | |
| Informed Momentum Co Llc | 0.06% | 71,261 | $620,683 | $283,619 | -$337,064 | -54.31% | |
| Numerai Gp Llc | 0.04% | 62,822 | $547,180 | $250,032 | -$297,148 | -54.31% | |
| Pcm Encore, Llc | 0.08% | 52,260 | $455,185 | $207,995 | -$247,190 | -54.31% | |
| Bank Of America Corp | 0.00% | 47,424 | $413,062 | $188,748 | -$224,314 | -54.31% | |
| Rhumbline Advisers | 0.00% | 43,961 | $382,894 | $174,965 | -$207,929 | -54.30% | |
| Sei Investments Co | 0.00% | 42,214 | $367,684 | $168,012 | -$199,672 | -54.31% | |
| Vanguard Global Advisers, Llc | 0.00% | 42,108 | $366,761 | $167,590 | -$199,171 | -54.31% | |
| Deutsche Bank Ag\ | 0.00% | 38,171 | $332,469 | $151,921 | -$180,548 | -54.31% | |
| Fmr Llc | 0.00% | 37,132 | $323,422 | $147,785 | -$175,637 | -54.31% | |
| Wells Fargo & Company/Mn | 0.00% | 36,253 | $315,763 | $144,287 | -$171,476 | -54.31% | |
| Xtx Topco Ltd | 0.00% | 35,422 | $308,526 | $140,980 | -$167,546 | -54.31% | |
| Commonwealth Equity Services, Llc | 0.00% | 34,472 | $300,250 | $137,199 | -$163,051 | -54.31% | |
| Channel Wealth Llc | 0.07% | 34,300 | $298,753 | $136,514 | -$162,239 | -54.31% | |
| Invesco Ltd. | 0.00% | 31,299 | $272,614 | $124,570 | -$148,044 | -54.31% | |
| Brown Advisory Inc | 0.00% | 31,143 | $271,256 | $123,949 | -$147,307 | -54.31% | |
| Arax Advisory Partners | 0.00% | 29,876 | $260,221 | $118,906 | -$141,315 | -54.31% |
Frequently asked questions about ATOM
Who owns the most ATOM stock?
The largest holders of ATOM are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ATOMERA INC (ATOM).
Is ATOM widely held by superinvestors?
Many widely followed stocks like ATOM appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly ATOM is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.