Deep Fission, Inc.

FISN

Exchange: Nasdaq
Industry: Electric Services
SEC CIK: 0001918102

SEC filings (opens in a new tab)

No open-market purchases or sales by Deep Fission, Inc. insiders were filed in the last 90 days; 21 institutions reported holding it in 13F filings for Q2 2026, worth $25.2M in total; no superinvestor holds it.

Q2 2026 vs. Q1 2026

How the institutions holding Deep Fission, Inc. changed between Q1 2026 and Q2 2026.

All holders in Q2 2026 All holders in Q1 2026

13F holders of FISN: Q1 2026 compared with Q2 2026
Measure	Q1 2026	Q2 2026	Change
Holders	0	21	+21
Shares	0	2.29M	+2.29M
Value	$0	$25.2M	+$25.2M

New holders (21)

Institutions that held Deep Fission, Inc. at the end of Q2 2026 but not at the end of Q1 2026.

Institutions new to FISN in Q2 2026
Institution	Shares	Value	% of portfolio
Blue Owl Capital Holdings LP	1,333,333	$14.7M	2.24%
Elevation Wealth Management LLC	298,335	$3.29M	2.47%
UBS Group AG	198,497	$2.19M	0.00%
Consolidated Press International Holdings Ltd	133,333	$1.47M	56.42%
Citadel Advisors LLC	110,000	$1.21M	0.00%
LPL Financial LLC	70,858	$782.3K	0.00%
Geode Capital Management, LLC	27,333	$301.8K	0.00%
Essential Investment Partners LLC	26,400	$291.5K	0.23%
Chapin Davis, Inc.	19,000	$209.8K	0.04%
Goldman Sachs Group Inc	17,373	$191.8K	0.00%
BHK Investment Advisors, LLC	15,000	$165.6K	0.05%
Prelude Capital Management, LLC	14,714	$162.4K	0.01%
Traphagen Investment Advisors LLC	13,666	$150.9K	0.01%
Morgan Stanley	6,050	$66.8K	0.00%
US Bancorp	1,100	$12.1K	0.00%
Clearstead Advisors, LLC	500	$5.52K	0.00%
FNY Investment Advisers, LLC	500	$5.00K	0.00%
Wells Fargo & Company	335	$3.70K	0.00%
Jones Financial Companies LLLP	300	$3.23K	0.00%
National Bank of Canada	200	$2.16K	0.00%
Citigroup Inc	2	$22	0.00%

Sold out (0)

Institutions that held Deep Fission, Inc. at the end of Q1 2026 and filed for Q2 2026 without it.

None.