ATOM ATOMERA INC

Ownership history in Sigma Planning Corp  ·  28 quarters on record

This page tracks every 13F SEC filing in which Sigma Planning Corp reported a position in ATOMERA INC (ATOM). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
0.03% (2020 Q4)
Avg. % of fund
0.01%
First filed
2018 Q4
Last filed
2025 Q3
Quarters held
28
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q3 REDUCED 12,750 -12,050 -48.6% 0.00% $56K $4.42
2025 Q2 REDUCED 24,800 -24,210 -49.4% 0.00% $125K $5.04
2025 Q1 REDUCED 49,010 -800 -1.6% 0.01% $196K $4.00
2024 Q4 ADDED 49,810 +24,810 +99.2% 0.02% $578K $11.60
2024 Q3 REDUCED 25,000 -1,200 -4.6% 0.00% $66K $2.63
2024 Q2 REDUCED 26,200 -400 -1.5% 0.00% $100K $3.81
2024 Q1 ADDED 26,600 +15,000 +129.3% 0.01% $164K $6.16
2023 Q4 REDUCED 11,600 -15,150 -56.6% 0.01% $81K $7.01
2023 Q3 UNCHANGED 26,750 0% 0.01% $167K $6.26
2023 Q2 ADDED 26,750 +5,075 +23.4% 0.01% $235K $8.77
18 older quarters hidden  —  Sign in free or upgrade to Premium to see full history
% of Fund (quarterly)    ATOM price (monthly, adj. close)
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