Which funds hold FISN?

As of 2026-Q2, 7 institutional funds reported holding FISN (DEEP FISSION INC) in SEC 13F filings, with a combined reported value of $3.97M.

How many shares of FISN do institutions own?

13F filers reported 359.59K shares of FISN, worth $3.97M in aggregate at the end of 2026-Q2.

Is institutional ownership of FISN rising or falling?

No prior-quarter baseline is available for a directional read.

Where does this data come from?

All figures are computed from SEC Form 13F quarterly filings, which institutional investment managers must file within 45 days of quarter end for long positions of $100,000 or more.

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FISN — DEEP FISSION INC

Reported value held$3.97M

Funds holding (latest)7

SectorUtilities

Funds holding (Q2 2026)7

Institutional value$3.97M · 359.59K sh

New / Add / Cut / Exit7 / 0 / 0 / 0

Top-5 / Top-10 concentration99.9% / 100.0%

As of Q2 2026, 7 SEC-registered investment managers reported holding FISN (DEEP FISSION INC) in their latest 13F filings, with a combined reported value of $3.97M across 359.59K shares. Ownership is concentrated: the five largest holders account for 99.9% of reported value and the top ten for 100.0%.

Compared with the prior quarter, 7 opened new positions. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.

FISN is classified in the Utilities sector.

All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.

Q2 2026 — 7 funds

Fund	Shares	Value	Portfolio Weight	Change
UBS Group AG history	198.50K	$2.19M	0.00%	New
Citadel Advisors history	110.00K	$1.21M	0.00%	New
Geode Capital Management history	27.33K	$301.76K	0.00%	New
Goldman Sachs Group history	17.37K	$191.80K	0.00%	New
Morgan Stanley history	6.05K	$66.79K	0.00%	New
Wells Fargo & Co history	335	$3.70K	0.00%	New
Citigroup Inc history	2	$22	0.00%	New

New Positions (Q2 2026)

UBS Group AG 198.50K sh · $2.19M
Citadel Advisors 110.00K sh · $1.21M
Geode Capital Management 27.33K sh · $301.76K
Goldman Sachs Group 17.37K sh · $191.80K
Morgan Stanley 6.05K sh · $66.79K
Wells Fargo & Co 335 sh · $3.70K
Citigroup Inc 2 sh · $22

Fully Exited (vs previous quarter)

No tracked fund fully exited this quarter.

Fund Position History — shares by quarter (top 7 funds)

Fund	Q2 2026
UBS Group AG	198.50K
Citadel Advisors	110.00K
Geode Capital Management	27.33K
Goldman Sachs Group	17.37K
Morgan Stanley	6.05K
Wells Fargo & Co	335
Citigroup Inc	2

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