Deep Fission, Inc FISN

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Deep Fission, Inc. - Common Stock · Company · Nasdaq · Industrials / Specialty Industrial Machinery

Paper trade (simulated — no real money)

Fill: USD 2.3000 · FX 1 USD = 1.277900 SGD · about SGD 2.9392 per unit

Sign in to practise with simulated trades before investing real money. USD fills are converted into the SGD portfolio at the displayed rate.

Announcement types: (default: consequential filings)
Results & current reports
Capital markets
Ownership & governance

USD closing-price chart (daily close from yfinance · Last year)

USD 14.56 → 2.30 · -84.2%
14.5608.4302.300 26,27 28 29 30 31 32 33 Jun 26Jul 26Oct 26

Numbered dotted lines mark the filtered filings under Announcement Events below.

Price & SEC Filing History 24 Oct 2025 — 25 Oct 2026 (Last year)

Daily Nasdaq prices are sourced from yfinance. Yellow highlighting marks an intraday rise or a gap up between adjacent trading sessions. SEC acceptance times are converted to US Eastern time: pre-market filings appear below that day’s OHLCV row; filings accepted after the 09:30 ET open appear above it. The SEC does not publish an exact first-public-availability timestamp, so acceptance time is the best available proxy.

Weekend
Weekend
2.4100 2.4799 2.2550 2.3000 666,049
2.5600 2.6100 2.3500 2.4100 456,800
2.9100 2.9200 2.5800 2.6300 895,300
33 · 8-K After-hours · 19:54 ET FORM 8-K ↗
3.6200 4.1300 2.8000 2.8100 2,123,500
3.5900 3.8100 3.3900 3.6600 715,000
Weekend
Weekend
3.6600 3.7500 3.4000 3.4500 362,900
3.8400 3.8500 3.5500 3.6500 690,100
3.9500 3.9800 3.6300 3.8500 490,500
4.0200 4.2000 3.9600 4.0100 417,300
4.5000 4.5600 4.1200 4.1800 417,100
Weekend
Weekend
4.7000 4.7700 4.4000 4.4500 416,500
5.0500 5.0800 4.6100 4.6600 477,200
5.4000 5.4600 5.0600 5.0800 194,900
5.4000 5.8500 5.4000 5.4700 277,700
5.6000 5.7300 5.3100 5.3800 197,000
Weekend
Weekend
5.4400 6.0500 5.2500 5.5700 520,700
5.1500 5.2400 4.9000 5.1800 336,500
5.2900 5.4700 5.0500 5.1300 281,900
5.6400 5.7500 5.2000 5.2500 436,600
6.3000 6.4400 5.4000 5.4200 579,100
Weekend
Weekend
6.6400 6.7500 6.2300 6.2500 578,000
7.7700 7.8700 6.8400 6.9500 710,100
8.1500 8.2100 7.6200 7.8000 316,300
7.9700 8.3600 7.8800 8.1200 407,200
32 · 8-K After market open · 11:26 ET FORM 8-K ↗
8.4700 8.5800 7.6800 7.8200 294,300
Weekend
Weekend
8.1500 8.7900 7.9500 8.4700 1,534,800
7.1900 8.2400 7.0100 8.1200 344,100
7.1300 7.3800 6.9000 7.1000 214,600
7.1800 7.5700 7.0400 7.1100 164,000
7.1100 7.3700 6.6800 7.1600 244,700
Weekend
Weekend
6.8900 7.3900 6.7500 7.1600 221,500
7.0000 7.1400 6.7300 6.7500 190,600
6.9200 7.2400 6.8000 7.1100 205,800
7.1900 7.2500 6.8000 6.9800 257,400
No trading
Weekend
Weekend
7.2000 7.3800 7.0400 7.1500 158,300
6.9700 7.4500 6.9100 7.1400 259,100
6.3800 6.9800 6.1700 6.9700 338,300
6.7000 6.8400 6.1000 6.3900 366,300
6.7700 7.0300 6.6200 6.7100 208,400
Weekend
Weekend
6.8600 7.1000 6.4200 6.5600 247,100
6.9300 7.2400 6.7600 6.9300 182,600
6.9800 7.3300 6.7700 6.8900 165,200
7.2800 7.4100 6.7800 6.9300 288,800
8.2000 8.2100 7.0300 7.1300 318,000
Weekend
Weekend
7.8300 8.3000 7.8300 8.2500 145,300
8.0200 8.0300 7.6800 7.7700 122,900
7.9800 8.3400 7.8100 8.0000 196,600
8.0300 8.2400 7.6400 7.8200 236,300
8.7500 9.0500 8.0200 8.1200 188,700
Weekend
Weekend
8.2600 8.8700 8.2000 8.6400 183,100
8.4000 8.6900 8.1000 8.2500 202,900
8.2600 8.8800 8.2000 8.3400 172,100
8.1200 8.4100 7.7700 8.2500 215,100
9.1000 9.1900 7.9100 7.9500 407,800
Weekend
Weekend
9.2500 9.5500 8.7600 8.9900 181,100
8.6100 9.5400 8.5200 9.2200 252,200
9.0300 9.2000 8.4000 8.7000 425,100
9.6200 10.5000 8.8200 9.1000 295,500
31 · 10-Q After-hours · 17:25 ET 10-Q ↗
9.5300 10.1100 9.4000 9.9200 198,600
Weekend
Weekend
9.7500 10.0200 9.4100 9.4100 53,900
9.5300 9.7000 9.3000 9.6200 83,900
30 · 8-K After-hours · 16:02 ET FORM 8-K ↗
10.1900 10.1900 9.5500 9.7200 122,400
9.8400 10.0000 8.8000 9.8900 319,500
10.2700 10.2900 9.5400 9.7900 189,700
Weekend
Weekend
10.5500 10.6500 10.0800 10.2600 70,200
11.5000 11.5000 10.4000 10.6700 133,100
11.1600 11.8500 11.1000 11.5700 131,400
10.3200 11.1700 10.3100 10.9800 115,800
10.6200 11.3200 10.2700 10.3100 117,600
Weekend
Weekend
29 · 8-K After market open · 12:06 ET FORM 8-K ↗
10.2900 10.7500 10.1000 10.6500 135,800
12.1200 12.4200 10.3800 10.5100 197,900
10.8700 12.8800 10.7300 12.1600 425,800
10.5600 10.7200 10.2000 10.6500 93,900
11.3500 11.5900 10.3100 10.3700 137,800
Weekend
Weekend
11.1200 11.6200 10.5500 11.1100 99,500
10.8800 11.7600 10.5000 11.1400 254,500
10.4100 11.2900 9.9500 10.9900 142,900
9.7000 10.5100 9.6100 10.3700 245,700
10.4000 10.5800 9.2000 9.8800 376,800
Weekend
Weekend
No trading
10.4000 10.5900 10.0400 10.2900 144,400
10.8000 10.8000 9.9100 10.4900 238,800
11.2200 11.2200 10.5000 11.0400 231,200
11.2400 11.2400 9.6400 11.0500 277,700
Weekend
Weekend
10.4000 11.4300 9.7400 10.7500 591,700
10.0300 10.4800 7.6600 10.0300 823,200
14.5000 14.5700 9.5600 9.7600 1,339,000
12.0000 13.2500 11.8800 12.4400 805,300
28 · 8-K After-hours · 16:20 ET FORM 8-K ↗
13.6100 15.5000 11.5300 12.4200 1,609,200
Weekend
Weekend
No trading
27 · 424B4 After-hours · 16:27 ET 424B4 ↗
16.0000 19.0000 14.5600 14.5600 2,779,000
26 · DEF 14A After-hours · 16:46 ET DEF 14A ↗
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
25 · S-1/A After market open · 15:07 ET S-1/A ↗
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
24 · S-1 Pre-market · 06:08 ET S-1 ↗
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
23 · 10-Q After market open · 15:09 ET 10-Q ↗
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
22 · 424B3 After-hours · 16:27 ET 424B3 ↗ 21 · 424B3 After-hours · 16:22 ET 424B3 ↗
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
20 · 8-K After market open · 10:11 ET FORM 8-K ↗
No trading
19 · S-1/A After market open · 15:50 ET S-1/A ↗
No trading
No trading
Weekend
Weekend
No trading
No trading
18 · 10-K After-hours · 17:28 ET 10-K ↗
No trading
No trading
No trading
Weekend
Weekend
No trading
17 · 8-K After market open · 10:46 ET FORM 8-K ↗
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
16 · 8-K Pre-market · 09:05 ET FORM 8-K ↗
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
15 · 8-K Next filing day · accepted 24 Feb, 21:13 ET FORM 8-K ↗
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
14 · S-1 After market open · 14:38 ET S-1 ↗
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
13 · 424B3 Pre-market · 07:31 ET 424B3 ↗ 12 · 8-K Pre-market · 07:30 ET FORM 8-K ↗
No trading
Weekend
Weekend
11 · 424B5 After-hours · 16:05 ET 424B5 ↗
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
10 · S-1/A Next filing day · accepted 26 Jan, 21:03 ET S-1/A ↗
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
9 · S-1/A After market open · 14:05 ET S-1/A ↗
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
8 · 8-K After-hours · 17:27 ET FORM 8-K ↗
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
7 · 8-K Next filing day · accepted 10 Dec, 19:24 ET FORM 8-K ↗
No trading
No trading
No trading
Weekend
Weekend
No trading
6 · 8-K After market open · 13:42 ET FORM 8-K ↗
No trading
No trading
No trading
5 · S-1/A After-hours · 17:10 ET S-1/A ↗
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
4 · 8-K After market open · 15:16 ET FORM 8-K ↗
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
3 · 10-Q After-hours · 17:17 ET 10-Q ↗
No trading
No trading
2 · 8-K After market open · 15:59 ET CURRENT REPORT ↗
No trading
No trading
No trading
Weekend
Weekend
No trading
1 · 8-K Next filing day · accepted 06 Nov, 18:18 ET FORM 8-K ↗
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading

Announcement Events

Each title opens the filing on the SEC website. Registered users can summarise the filing and up to seven relevant exhibits linked within the same SEC submission.

33 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 19:54 ET Summarise
32 8-K FORM 8-K (opens SEC filing in a new tab) After market open · 11:26 ET Summarise
31 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 17:25 ET Summarise
30 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:02 ET Summarise
29 8-K FORM 8-K (opens SEC filing in a new tab) After market open · 12:06 ET Summarise
28 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:20 ET Summarise
27 424B4 424B4 (opens SEC filing in a new tab) After-hours · 16:27 ET Summarise
26 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:46 ET Summarise
25 S-1/A S-1/A (opens SEC filing in a new tab) After market open · 15:07 ET Summarise
24 S-1 S-1 (opens SEC filing in a new tab) Pre-market · 06:08 ET Summarise
23 10-Q 10-Q (opens SEC filing in a new tab) After market open · 15:09 ET Summarise
22 424B3 424B3 (opens SEC filing in a new tab) After-hours · 16:27 ET Summarise
21 424B3 424B3 (opens SEC filing in a new tab) After-hours · 16:22 ET Summarise
20 8-K FORM 8-K (opens SEC filing in a new tab) After market open · 10:11 ET Summarise
19 S-1/A S-1/A (opens SEC filing in a new tab) After market open · 15:50 ET Summarise
18 10-K 10-K (opens SEC filing in a new tab) After-hours · 17:28 ET Summarise
17 8-K FORM 8-K (opens SEC filing in a new tab) After market open · 10:46 ET Summarise
16 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 09:05 ET Summarise
15 8-K FORM 8-K (opens SEC filing in a new tab) Next filing day · accepted 24 Feb, 21:13 ET Summarise
14 S-1 S-1 (opens SEC filing in a new tab) After market open · 14:38 ET Summarise
13 424B3 424B3 (opens SEC filing in a new tab) Pre-market · 07:31 ET Summarise
12 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 07:30 ET Summarise
11 424B5 424B5 (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
10 S-1/A S-1/A (opens SEC filing in a new tab) Next filing day · accepted 26 Jan, 21:03 ET Summarise
9 S-1/A S-1/A (opens SEC filing in a new tab) After market open · 14:05 ET Summarise
8 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 17:27 ET Summarise
7 8-K FORM 8-K (opens SEC filing in a new tab) Next filing day · accepted 10 Dec, 19:24 ET Summarise
6 8-K FORM 8-K (opens SEC filing in a new tab) After market open · 13:42 ET Summarise
5 S-1/A S-1/A (opens SEC filing in a new tab) After-hours · 17:10 ET Summarise
4 8-K FORM 8-K (opens SEC filing in a new tab) After market open · 15:16 ET Summarise
3 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 17:17 ET Summarise
2 8-K CURRENT REPORT (opens SEC filing in a new tab) After market open · 15:59 ET Summarise
1 8-K FORM 8-K (opens SEC filing in a new tab) Next filing day · accepted 06 Nov, 18:18 ET Summarise