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Deep Fission Inc (FISN)

CUSIP: 243927100 | NYSE | Industrials · Specialty Industrial Machinery | Micro Cap | 26 institutional holders

Quarters

Q3 2026Q2 2026
CompareDetailedHistoricalFundsOptions13D/13GPeersTargetingTrading SummaryProfile

Beneficial Ownership — 13D / 13G

Full history →

5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.

HolderShares% of ClassChangeEvent Datevs 13F
13DMuller Elizabeth10,541,75720.6%New 5%+ stakeSep 5, 2025No 13F filer matched
13DMuller Richard5,426,40610.6%New 5%+ stakeSep 5, 2025

Institutional Holders — Q3 2026

Exchange Traded Concepts, LLC480,348
0.0% of portfolio›$2.5M
Elevation Wealth Management LLC349,336
1.2% of portfolio›$1.8M
Essential Investment Partners LLC59,502
0.2% of portfolio›$305.2K
Harbour Capital Advisors, LLC25,050
0.0% of portfolio›$128.5K
Chapin Davis, Inc.19,000
0.0% of portfolio›$97.5K
Traphagen Investment Advisors LLC16,815
0.0% of portfolio›$86.3K
US Bancorp \de\2,600
0.0% of portfolio›$13.3K
FNY Investment Advisers, LLC1,201
0.0% of portfolio›$6
Parkside Financial Bank & Trust700
0.0% of portfolio›$3.6K
Citigroup Inc266
0.0% of portfolio›$1.4K
Kelleher Financial Advisors140
0.0% of portfolio›$716
StyleTurnoverLocationFiled
Exchange Traded Concepts, LLC
480,348$2.5M0.0%GrowthMediumOklahoma City, OK2026-10-28
Elevation Wealth Management LLC
349,336$1.8M1.2%Agg GrowthLowEden Prairie, MN2026-11-02
Essential Investment Partners LLC
59,502$305.2K0.2%GrowthLowEnglewood, CO2026-10-27
Harbour Capital Advisors, LLC
25,050$128.5K0.0%GrowthLowTysons Corner, VA2026-10-13
Chapin Davis, Inc.
19,000$97.5K0.0%GrowthHighBaltimore, MD2026-10-09
Traphagen Investment Advisors LLC
16,815$86.3K0.0%ETFLowOradell, NJ2026-10-14
US Bancorp \de\
2,600$13.3K0.0%IndexLowMinneapolis, MN2026-11-05
FNY Investment Advisers, LLC
1,201$60.0%GrowthVery HighNew York, NY2026-10-16
Parkside Financial Bank & Trust
700$3.6K0.0%CoreVery LowSaint Louis, MO2026-10-27
Citigroup Inc
266$1.4K0.0%CoreMediumNew York, NY2026-11-04
Kelleher Financial Advisors
140$7160.0%CoreMediumNew York, NY2026-10-30
No 13F filer matched
13DMuller Elizabeth10,541,757
20.6% of class · Sep 5, 2025New 5%+ stake
No 13F filer matched
13DMuller Richard5,426,406
10.6% of class · Sep 5, 2025New 5%+ stake
No 13F filer matched