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Livermore
Livermore
ZHEN

Sigma Planning Corp

SEC CIK
0001449126
Latest filing
Aug 7, 2026

ATOM holding history

Atomera Inc in every 13F filed by Sigma Planning Corp, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

ATOM overviewAll 13F holders of ATOMFull Q2 2026 holdings

Shares (Q4 2025)
0
Sold out in Q4 2025
Value
$0
% of portfolio
0.0%
Quarters held
19
Since Q1 2021
Holdings of ATOM by Sigma Planning Corp, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q4 20250$00.0%−12,750−100.0%Sold outHolders
Q3 202512,750$56.4K<0.1%−12,050−48.6%ReducedHolders
Q2 202524,800$125.0K<0.1%−24,210−49.4%ReducedHolders
Q1 202549,010$196.0K<0.1%−800−1.6%ReducedHolders
Q4 202449,810$577.8K<0.1%+24,810+99.2%AddedHolders
Q3 202425,000$65.8K<0.1%−1,200−4.6%ReducedHolders
Q2 202426,200$99.8K<0.1%−400−1.5%ReducedHolders
Q1 202426,600$163.9K<0.1%+15,000+129.3%AddedHolders
Q4 202311,600$81.3K<0.1%−15,150−56.6%ReducedHolders
Q3 202326,750$167.5K<0.1%00.0%UnchangedHolders
Q2 202326,750$234.6K<0.1%+5,075+23.4%AddedHolders
Q1 202321,675$138.1K<0.1%+1,000+4.8%AddedHolders
Q4 202220,675$128.6K<0.1%+575+2.9%AddedHolders
Q3 202220,100$204.0K<0.1%+1,550+8.4%AddedHolders
Q2 202218,550$174.0K<0.1%+2,170+13.2%AddedHolders
Q1 202216,380$214.0K<0.1%+2,650+19.3%AddedHolders
Q4 202113,730$276.0K<0.1%−20−0.1%ReducedHolders
Q3 202113,750$317.0K<0.1%+400+3.0%AddedHolders
Q2 202113,350$286.0K<0.1%−600−4.3%ReducedHolders
Q1 202113,950$342.0K<0.1%––Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.