Mariner’s Deep Fission Inc FISN Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q3
$618K Buy
+120,557
New +$1.03M ﹤0.01% 2289

Other funds holding FISN

Mariner's FISN Position: Q3 2026 in Review

Mariner opened a new position in Deep Fission Inc (FISN) in Q3 2026: 120,557 shares worth $618K. The stake represents ﹤0.01% of the portfolio and ranks #2289 among its holdings.

25 funds tracked by Wall St. Rank hold FISN as of Q3 2026.

  • Mariner held 120,557 shares of Deep Fission Inc worth $618K as of Q3 2026.
  • Deep Fission Inc was a new Mariner position in Q3 2026.
  • Deep Fission Inc made up ﹤0.01% of Mariner's portfolio in Q3 2026, its #2289 holding.
  • 25 funds tracked by Wall St. Rank held Deep Fission Inc as of Q3 2026.

Based on Mariner's 13F filing for Q3 2026, filed 12 Nov 2026.