York Space Systems Inc YSS

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York Space Systems Inc. Common Stock · Company · NYSE

Paper trade (simulated — no real money)

Fill: USD 8.9600 · FX 1 USD = 1.266600 SGD · about SGD 11.3487 per unit

Sign in to place simulated trades. 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 33.61 → 8.96 · -73.3%
43.45025.9808.510 4,5 6,7 8 9 10 11 12 13 14 15 16 17 18 19 Jan 26Mar 26Jun 26Sep 26

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

Price & SEC Filing History 05 Sep 2025 — 06 Sep 2026 (Last year)

Daily NYSE 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
8.4600 8.9700 8.4600 8.9600 2,654,111
8.8400 9.0000 8.3800 8.5100 2,679,500
8.7800 8.8100 8.3800 8.6700 2,997,800
8.8500 8.9900 8.6100 8.8200 2,508,400
8.9500 9.2900 8.9300 9.0900 1,909,300
Weekend
Weekend
9.1800 9.3900 8.9500 8.9700 2,163,800
9.2700 9.4000 9.0200 9.1900 2,048,900
9.2000 9.5500 9.0900 9.1300 1,967,800
10.0000 10.0800 9.1300 9.3200 2,948,300
9.2200 9.8300 9.1100 9.7600 3,257,000
Weekend
Weekend
9.2600 9.7500 9.1500 9.3200 2,434,000
9.9900 10.0000 8.8900 9.2000 5,467,800
10.3200 10.4400 9.8800 10.1800 3,781,000
10.2400 10.7400 9.4000 10.4200 5,034,900
10.3600 11.7300 10.3600 10.6600 4,389,800
Weekend
Weekend
10.0600 11.2400 9.6300 10.9300 6,604,400
19 · 10-Q Next filing day · accepted 13 Aug, 18:17 ET 10-Q ↗ 18 · 8-K After-hours · 16:06 ET 8-K ↗
10.8700 11.8900 10.7600 11.5100 4,593,200
10.7000 11.3600 10.5000 11.0400 4,001,200
10.5100 10.6200 10.0100 10.6000 3,754,400
11.2700 11.9300 10.2300 10.4800 3,075,200
Weekend
Weekend
11.2500 11.8000 10.4800 11.4100 3,932,000
13.1000 13.1000 10.8100 10.8900 4,035,300
17 · 8-K After-hours · 16:06 ET 8-K ↗
15.0000 15.1700 13.1100 13.1500 2,464,700
14.9700 16.0000 14.6100 15.3100 4,803,600
14.6600 15.1600 13.8800 14.2800 1,919,200
Weekend
Weekend
15.4100 15.6800 14.6800 14.7300 1,373,000
15.0400 15.6500 14.3100 15.2600 2,104,200
17.3700 17.4800 14.4200 15.0200 4,322,100
18.2900 18.3200 16.9400 17.8100 2,067,500
17.3300 18.9500 17.2700 18.8700 791,700
Weekend
Weekend
17.9600 17.9800 16.5300 17.0600 707,300
17.4700 18.5900 17.3300 17.6200 850,900
18.1100 18.8200 17.5400 17.7200 1,240,700
17.2200 18.8100 17.0000 17.9800 1,018,500
18.2500 18.4900 17.1600 17.4200 922,200
Weekend
Weekend
17.9700 18.9600 17.6200 17.9300 831,800
19.0500 19.1500 17.3600 18.5300 1,082,900
21.1000 21.7700 19.1600 19.2700 782,300
19.4500 21.9500 19.4000 21.2600 1,565,200
20.1200 20.4800 18.8100 19.1300 1,116,800
Weekend
Weekend
20.4800 21.2900 19.5200 19.8900 764,700
21.2100 21.2700 19.9800 20.5800 1,008,300
22.2000 23.6000 20.7200 21.0000 1,288,400
23.1500 23.3500 22.0200 22.9200 693,000
25.0100 25.4800 22.6500 23.5700 848,300
Weekend
Weekend
No trading
24.8900 27.2500 24.4100 24.9000 1,233,200
25.1400 25.9500 24.5500 24.5900 1,140,000
24.0000 25.4200 23.5100 24.6200 1,211,100
27.0000 27.2900 24.0000 24.1100 1,444,900
Weekend
Weekend
23.7900 26.4500 23.4000 26.2600 1,601,500
25.0100 25.4600 23.5500 24.3900 1,047,500
28.5600 28.9900 24.4000 24.5400 1,836,100
27.5300 28.9300 27.2000 28.5600 979,000
30.4900 30.4900 27.2900 28.9600 1,443,400
Weekend
Weekend
No trading
31.5000 31.5000 27.5400 30.8000 4,190,000
32.5700 34.7300 30.0900 30.3000 1,578,100
29.7300 32.5400 29.0300 32.4900 1,869,400
27.9300 30.9000 26.2600 30.5000 2,120,000
Weekend
Weekend
33.3900 33.7500 26.9900 27.6900 3,036,600
28.9300 34.0800 28.5300 33.7200 2,913,100
27.4000 28.6800 26.1500 27.6200 1,348,200
29.2700 31.7500 26.8300 27.6800 1,865,300
29.8400 30.9900 28.6000 28.9900 989,400
Weekend
Weekend
29.3500 29.8200 27.6800 29.1400 1,410,900
30.4000 33.1800 29.2800 29.6700 2,224,100
16 · 8-K/A Pre-market · 08:52 ET 8-K/A ↗
31.0600 31.3000 28.5800 30.4400 2,277,000
29.8900 33.9900 29.5200 31.9100 1,875,900
32.2500 32.2500 29.1300 29.7800 1,301,700
Weekend
Weekend
31.5700 32.8700 27.8600 32.6400 3,416,600
35.0000 36.3800 30.8500 31.9900 2,689,200
34.7400 36.3000 33.3300 35.1100 1,973,700
31.6200 35.3100 30.3800 33.1800 3,174,400
No trading
Weekend
Weekend
28.5600 29.7500 27.9000 29.0300 1,372,800
25.7500 28.7200 25.3100 28.4500 1,585,700
25.6500 26.4600 24.6400 25.8500 1,123,600
25.9200 25.9200 24.2500 25.6800 1,215,100
15 · 8-K Pre-market · 08:47 ET 8-K ↗
25.2600 26.9900 24.5300 25.9300 2,289,500
Weekend
Weekend
27.0700 27.6500 23.3900 24.0200 4,617,200
14 · 10-Q Next filing day · accepted 14 May, 18:09 ET 10-Q ↗ 13 · 8-K After-hours · 16:20 ET 8-K ↗
28.4700 29.2700 26.2000 28.9400 4,168,500
32.5100 32.8000 27.5800 28.2400 4,426,900
34.5600 35.4900 30.8400 31.9700 2,883,200
34.7800 37.8600 30.2500 35.8800 4,741,800
Weekend
Weekend
34.0600 36.0600 33.4400 34.7900 1,843,000
36.2600 36.4500 32.9100 33.3800 1,508,500
33.6400 37.9800 33.6400 36.8700 2,117,700
32.8800 34.9100 30.8000 32.7100 1,770,800
31.9500 33.4300 31.0200 32.0600 1,146,100
Weekend
Weekend
33.4100 33.4100 30.7500 31.9700 1,361,700
30.5000 33.7500 30.4100 33.1600 1,976,900
31.5700 31.8800 28.5000 29.2400 1,741,400
12 · 8-K Pre-market · 09:06 ET 8-K ↗
31.8200 32.1700 30.3000 31.9300 1,368,900
31.1400 33.0600 30.5000 32.5800 1,963,700
Weekend
Weekend
35.8000 36.0000 30.2700 31.0600 3,648,700
43.0600 43.6200 34.2500 35.7100 4,618,400
42.2900 44.5400 39.5700 43.4500 2,637,100
39.2800 44.3100 38.9300 41.3500 3,557,500
35.6900 38.7600 35.5200 38.4700 1,638,500
Weekend
Weekend
38.5100 38.9500 34.6300 35.7200 2,130,800
39.5000 39.5000 35.1000 38.3100 3,170,600
34.8300 40.0500 34.5600 39.6800 3,992,500
11 · 8-K After-hours · 17:00 ET 8-K ↗
33.4300 35.7800 32.1100 34.4600 2,794,900
33.4200 36.9900 32.0100 33.8700 3,479,400
Weekend
Weekend
36.0500 36.0700 31.6600 33.3200 3,317,900
27.9000 36.6500 27.9000 36.0100 5,890,700
28.2200 29.5700 26.8900 27.9500 1,784,700
28.2500 28.2900 26.3100 27.5600 1,897,500
29.2000 30.3800 27.6500 28.1000 3,220,800
Weekend
Weekend
No trading
22.8000 28.2300 22.6600 28.0300 3,873,200
22.3800 24.7700 22.3800 23.6000 1,639,400
21.2100 22.9300 20.9000 22.1700 1,784,100
21.5000 21.6200 20.3100 21.0400 2,236,900
Weekend
Weekend
20.9200 22.2400 20.7900 21.6600 1,605,100
21.8100 22.6400 20.8300 21.1900 1,007,000
21.2700 23.9000 21.1300 22.4900 1,553,000
23.0100 23.4500 21.2500 21.3900 1,516,300
21.6000 23.8500 20.5500 23.2000 2,198,800
Weekend
Weekend
19.8900 23.7500 18.2800 21.0700 8,693,200
10 · 10-K Next filing day · accepted 19 Mar, 18:47 ET 10-K ↗ 9 · 8-K After-hours · 16:17 ET 8-K ↗
17.9400 18.1800 16.9300 17.6800 1,533,300
18.8000 18.9200 18.0600 18.2000 1,256,900
19.9200 20.2400 18.6600 18.6800 728,600
20.0000 20.3600 19.7300 19.8200 487,100
Weekend
Weekend
20.7500 21.2300 19.7900 19.8100 1,276,200
21.0100 21.2400 19.6700 19.9800 744,400
21.7300 21.8700 20.8000 21.1800 395,100
21.6400 23.6000 21.3200 21.9600 433,800
8 · 8-K Next filing day · accepted 09 Mar, 19:07 ET 8-K ↗
21.3400 21.9200 20.3000 21.6500 594,000
Weekend
Weekend
22.3300 22.3300 21.1200 21.4000 579,500
23.2900 23.4400 21.6300 22.7900 772,500
24.4200 24.5200 22.7700 23.1800 466,300
25.2300 25.2900 23.1900 24.2600 559,400
25.2600 27.2400 25.2000 26.0000 1,240,900
Weekend
Weekend
25.7900 26.8900 25.3700 25.6000 675,300
26.4500 27.2500 25.6300 26.1700 534,700
28.6200 28.9600 25.9100 26.4600 796,400
27.9600 28.4600 26.7300 27.9500 754,000
26.7800 28.2300 25.5700 27.2000 1,605,100
Weekend
Weekend
28.5500 28.8600 25.2500 25.9100 746,000
27.7200 28.9900 27.0400 28.5700 344,700
28.1600 29.6800 27.5300 27.9600 460,700
26.0100 29.2000 25.9400 28.0000 1,579,400
No trading
Weekend
Weekend
24.5600 26.0300 24.0900 25.9500 392,700
27.3400 27.6000 23.9600 24.4500 660,500
28.0600 28.5500 25.6500 27.3900 727,900
26.1600 28.5600 25.6000 27.4300 1,436,900
26.0000 26.6400 25.5000 26.2100 657,500
Weekend
Weekend
23.5500 26.0600 23.1100 25.4400 1,408,100
23.4300 25.2000 22.0100 23.1300 2,711,100
26.3700 27.7000 23.2400 24.9000 3,664,600
29.5000 30.0600 23.5000 26.5200 6,216,900
34.0000 34.3600 29.0500 29.2200 4,913,700
Weekend
Weekend
7 · 8-K After-hours · 16:05 ET 8-K ↗
34.5000 36.6900 33.7500 33.9500 4,280,300
6 · 424B4 Pre-market · 06:59 ET 424B4 ↗
38.1000 38.4700 32.6400 33.6100 15,958,000
5 · S-1MEF After-hours · 19:21 ET S-1MEF ↗
No trading
No trading
No trading
4 · S-1/A Pre-market · 06:31 ET S-1/A ↗
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
3 · S-1/A After-hours · 16:25 ET S-1/A ↗
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
No trading
No trading
No trading
2 · S-1/A Pre-market · 09:20 ET S-1/A ↗
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
1 · S-1 After market open · 11:35 ET S-1 ↗
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
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
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.

19 10-Q 10-Q (opens SEC filing in a new tab) Next filing day · accepted 13 Aug, 18:17 ET Summarise
18 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
17 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
16 8-K/A 8-K/A (opens SEC filing in a new tab) Pre-market · 08:52 ET Summarise
15 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:47 ET Summarise
14 10-Q 10-Q (opens SEC filing in a new tab) Next filing day · accepted 14 May, 18:09 ET Summarise
13 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:20 ET Summarise
12 8-K 8-K (opens SEC filing in a new tab) Pre-market · 09:06 ET Summarise
11 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:00 ET Summarise
10 10-K 10-K (opens SEC filing in a new tab) Next filing day · accepted 19 Mar, 18:47 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:17 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) Next filing day · accepted 09 Mar, 19:07 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
6 424B4 424B4 (opens SEC filing in a new tab) Pre-market · 06:59 ET Summarise
5 S-1MEF S-1MEF (opens SEC filing in a new tab) After-hours · 19:21 ET Summarise
4 S-1/A S-1/A (opens SEC filing in a new tab) Pre-market · 06:31 ET Summarise
3 S-1/A S-1/A (opens SEC filing in a new tab) After-hours · 16:25 ET Summarise
2 S-1/A S-1/A (opens SEC filing in a new tab) Pre-market · 09:20 ET Summarise
1 S-1 S-1 (opens SEC filing in a new tab) After market open · 11:35 ET Summarise