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 $68.87M 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 $9.04M in its March 31, 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 $12.55M, representing an estimated gain of +38.85% 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., Quantum Private Wealth, Llc, Avenir Corp, 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
103
Total Reported Value
$68.87M
Largest Holder
Blackrock, Inc.
Largest Position
$9.04M
Insider Transactions (90d)
27
Latest Filing Quarter
Q2 2026
New Institutional Positions
128
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% | 2,372,844 | $9,040,535 | $12,552,345 | +$3,511,810 | +38.85% | |
| Quantum Private Wealth, Llc | 1.66% | 743,895 | $6,479,329 | $3,935,205 | -$2,544,124 | -39.27% | |
| Avenir Corp | 0.68% | 1,461,415 | $5,567,991 | $7,730,885 | +$2,162,894 | +38.85% | |
| Vanguard Capital Management Llc | 0.00% | 1,288,161 | $4,907,893 | $6,814,372 | +$1,906,479 | +38.85% | |
| Baird Financial Group, Inc. | 0.01% | 1,277,680 | $4,867,961 | $6,758,927 | +$1,890,966 | +38.85% | |
| Citadel Advisors Llc | 0.00% | 1,049,979 | $4,000,420 | $5,554,389 | +$1,553,969 | +38.85% | |
| D. E. Shaw & Co., Inc. | 0.00% | 975,623 | $3,717,124 | $5,161,046 | +$1,443,922 | +38.85% | |
| Geode Capital Management, Llc | 0.00% | 769,697 | $2,933,406 | $4,071,697 | +$1,138,291 | +38.80% | |
| Defender Capital, Llc. | 0.84% | 295,450 | $2,573,370 | $1,562,931 | -$1,010,440 | -39.27% | |
| Hollencrest Capital Management | 0.08% | 597,199 | $2,275,328 | $3,159,183 | +$883,855 | +38.85% | |
| State Street Corp | 0.00% | 577,897 | $2,201,788 | $3,057,075 | +$855,287 | +38.85% | |
| Two Sigma Investments, Lp | 0.00% | 530,000 | $2,019,300 | $2,803,700 | +$784,400 | +38.85% | |
| Arosa Capital Management Lp | 1.22% | 490,000 | $1,866,900 | $2,592,100 | +$725,200 | +38.85% | |
| Marshall Wace, Llp | 0.00% | 488,675 | $1,861,852 | $2,585,091 | +$723,239 | +38.85% | |
| Northern Trust Corp | 0.00% | 288,680 | $1,099,870 | $1,527,117 | +$427,247 | +38.85% | |
| Westside Investment Management, Inc. | 0.14% | 119,682 | $1,042,436 | $633,118 | -$409,318 | -39.27% | |
| Morgan Stanley | 0.00% | 271,602 | $1,034,803 | $1,436,775 | +$401,972 | +38.85% | |
| Pathstone Holdings, Llc | 0.00% | 250,905 | $955,949 | $1,327,287 | +$371,338 | +38.85% | |
| Vanguard Fiduciary Trust Co | 0.00% | 216,392 | $824,454 | $1,144,714 | +$320,260 | +38.85% | |
| Goldman Sachs Group Inc | 0.00% | 197,693 | $753,210 | $1,045,796 | +$292,586 | +38.85% | |
| Vanguard Portfolio Management Llc | 0.00% | 178,970 | $681,876 | $946,751 | +$264,875 | +38.85% | |
| Sargent Investment Group, Llc | 0.09% | 175,900 | $670,179 | $930,511 | +$260,332 | +38.85% | |
| Ubs Group Ag | 0.00% | 175,861 | $670,031 | $930,305 | +$260,274 | +38.85% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 163,066 | $621,281 | $862,619 | +$241,338 | +38.85% |
| Jane Street Group, Llc | 0.00% | 159,676 | $608,365 | $844,686 | +$236,321 | +38.85% | |
| Aqr Capital Management Llc | 0.00% | 123,545 | $470,708 | $653,553 | +$182,845 | +38.84% | |
| Brown Advisory Inc | 0.00% | 100,243 | $381,926 | $530,285 | +$148,359 | +38.85% | |
| Charles Schwab Investment Management Inc | 0.00% | 86,200 | $328,422 | $455,998 | +$127,576 | +38.85% | |
| Group One Trading Llc | 0.01% | 83,116 | $316,672 | $439,684 | +$123,012 | +38.85% | |
| Commonwealth Equity Services, Llc | 0.00% | 34,472 | $300,250 | $182,357 | -$117,893 | -39.26% | |
| Bank Of New York Mellon Corp | 0.00% | 70,629 | $269,098 | $373,627 | +$104,529 | +38.84% | |
| Fmr Llc | 0.00% | 63,771 | $242,968 | $337,349 | +$94,381 | +38.84% | |
| Citigroup Inc | 0.00% | 27,531 | $239,795 | $145,639 | -$94,156 | -39.27% | |
| Nuveen, Llc | 0.00% | 60,813 | $231,698 | $321,701 | +$90,003 | +38.84% | |
| Pcm Encore, Llc | 0.04% | 52,260 | $199,111 | $276,455 | +$77,344 | +38.84% | |
| Bank Of America Corp | 0.00% | 46,301 | $176,407 | $244,932 | +$68,525 | +38.84% | |
| Sequoia Financial Advisors | 0.00% | 20,183 | $175,794 | $106,768 | -$69,026 | -39.27% | |
| Channel Wealth Llc | 0.04% | 38,500 | $146,685 | $203,665 | +$56,980 | +38.85% | |
| Rhumbline Advisers | 0.00% | 35,335 | $134,621 | $186,922 | +$52,301 | +38.85% | |
| Rathbones Group Plc | 0.00% | 13,485 | $117,454 | $71,336 | -$46,118 | -39.27% | |
| Abel Hall, Llc | 0.02% | 13,027 | $113,465 | $68,913 | -$44,552 | -39.27% | |
| Police & Firemen'S Retirement System Of New Jersey | 0.00% | 12,997 | $113,204 | $68,754 | -$44,450 | -39.27% | |
| Deutsche Bank Ag\ | 0.00% | 24,329 | $92,694 | $128,700 | +$36,006 | +38.84% | |
| Gleason Group, Inc. | 0.01% | 10,500 | $91,455 | $55,545 | -$35,910 | -39.27% | |
| Marathon Capital Management | 0.02% | 10,000 | $87,100 | $52,900 | -$34,200 | -39.27% | |
| Slt Holdings Llc | 0.06% | 10,000 | $87,100 | $52,900 | -$34,200 | -39.27% | |
| Arax Advisory Partners | 0.00% | 21,797 | $83,047 | $115,306 | +$32,259 | +38.84% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | 21,087 | $80,341 | $111,550 | +$31,209 | +38.85% | |
| Advisory Research Inc | 0.01% | 20,000 | $76,200 | $105,800 | +$29,600 | +38.85% | |
| Hightower Advisors, Llc | 0.00% | 19,371 | $73,804 | $102,473 | +$28,669 | +38.84% |
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.