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FISN

Nasdaq
Deep Fission, Inc. - Common Stock
SEC Ticker Form: FISN

Listing (Nasdaq Trader)

Symbol Directory: FISN →
Listing ExchangeNasdaq (Q)
Market CategoryGlobal Market (G)
ETFNo
Round Lot Size100 shares
Financial StatusNormal (N)
Test IssueNo
Listing Since2026-09-20 05:30:00 UTC
SEC Ticker EquivalentFISN

Regulatory Flags (Nasdaq Trader)

Symbol: FISN

Rule 201 Short Sale Circuit Breakers Triggered

Alternative uptick rule (Rule 201) triggered by a ≥10% price decline from previous day's close (most recent first, up to 50 triggers).

Trade DateTrigger Time (ET)
2026-09-292026-09-28T15:16:06
2026-09-282026-09-25T12:45:27
2026-09-252026-09-24T10:21:51
2026-09-242026-09-24T10:21:51
2026-08-252026-08-24T11:04:33
2026-08-242026-08-24T11:04:33
2026-08-112026-08-10T13:42:09
2026-08-102026-08-10T13:42:09
2026-08-052026-08-04T10:59:08
2026-08-042026-08-04T10:59:08
2026-07-292026-07-28T09:44:47
2026-07-282026-07-28T09:44:47
2026-07-242026-07-23T15:13:17
2026-07-232026-07-23T15:13:17
2026-07-172026-07-16T10:50:35
2026-07-162026-07-16T10:50:35
2026-07-072026-07-06T10:17:02
2026-07-062026-07-06T10:17:02
2026-07-022026-07-01T10:21:12
2026-07-012026-07-01T10:21:12
2026-06-302026-06-29T11:05:36
2026-06-292026-06-29T11:05:36
2026-06-262026-06-25T09:33:18
2026-06-252026-06-24T12:26:47
2026-06-242026-06-24T12:26:47
2026-06-232026-06-22T09:32:55
2026-06-222026-06-22T09:32:55

Nasdaq Trader Listing Event History

2 events recorded
DateSourceEvent KindDescription
2026-08-30https://web.archive.org/web/20260830054954/https://www.nasdaqtrader.com/dynamic/SymDir/nasdaqlisted.txtARCHIVEDListed in archived Nasdaq Trader symbol directory (Wayback Machine snapshot; listing date on or before)
2026-09-20nasdaqtraded.txtFIRST_CAPTUREAlready listed on Nasdaq (Global Market) at first daily capture

Nasdaq Trader daily captures since 2026-09-20