Boundless Bio, Inc BOLD

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Boundless Bio, Inc. - Common Stock · Company · Nasdaq · Healthcare / Biotechnology

Paper trade (simulated — no real money)

Fill: USD 2.3600 · FX 1 USD = 1.277900 SGD · about SGD 3.0158 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 1.46 → 2.36 · 61.6%
3.0002.0251.050 1,2 3,4 5 6,7 8,9 10 11 12 13 Oct 25Jan 26Apr 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 2.4400 2.3500 2.3600 34,870
2.4500 2.4600 2.3800 2.4400 114,100
2.5300 2.5650 2.4100 2.4400 64,300
2.3300 2.4900 2.3300 2.4300 84,400
2.3800 2.4850 2.3100 2.3100 219,700
Weekend
Weekend
2.3700 2.4900 2.2800 2.3400 711,200
2.4000 2.5250 2.3350 2.3500 182,000
2.4300 2.4900 2.3850 2.3900 129,800
2.5500 2.6900 2.3900 2.4300 463,200
2.5300 2.5900 2.5000 2.5500 60,500
Weekend
Weekend
2.5800 2.6400 2.4700 2.5300 166,800
2.5800 2.6700 2.5000 2.5800 334,200
2.5800 2.7100 2.5620 2.6400 116,900
2.6200 2.6500 2.5150 2.5700 65,200
2.6200 2.6600 2.5600 2.6000 55,100
Weekend
Weekend
2.6200 2.7000 2.5500 2.6200 156,500
2.4900 2.6200 2.4900 2.5900 163,800
2.5600 2.6350 2.4200 2.5100 208,100
2.6000 2.6200 2.5600 2.5600 52,000
2.6800 2.7150 2.5580 2.6100 142,200
Weekend
Weekend
2.6100 2.6700 2.5900 2.6600 255,400
2.6900 2.7400 2.5950 2.6000 550,300
2.8900 2.8900 2.6850 2.7000 170,100
2.9300 2.9300 2.8300 2.8800 30,200
2.8000 2.8350 2.7500 2.8300 133,700
Weekend
Weekend
2.7900 2.8700 2.7700 2.8100 346,400
2.8300 2.8300 2.7700 2.8000 92,200
2.8100 2.8500 2.7850 2.8200 102,200
2.8300 2.8500 2.8100 2.8100 23,200
2.8400 2.8900 2.8400 2.8400 27,800
Weekend
Weekend
2.8500 2.8500 2.8100 2.8300 63,800
2.8500 2.8700 2.8200 2.8400 28,700
2.8600 2.8780 2.8300 2.8500 48,800
2.8700 2.9400 2.7600 2.8600 167,300
No trading
Weekend
Weekend
2.8700 2.8900 2.8600 2.8700 20,000
2.9000 2.9400 2.8500 2.8700 72,400
2.8900 2.9100 2.8500 2.8900 81,500
2.8100 2.9050 2.8050 2.8900 145,900
2.8100 2.9400 2.8000 2.8100 103,200
Weekend
Weekend
13 · 8-K After-hours · 17:25 ET 8-K ↗
2.8200 2.8600 2.8000 2.8300 75,500
2.9100 2.9900 2.8600 2.8600 46,400
2.9800 3.0400 2.9000 2.9150 158,800
2.9600 3.0000 2.9300 2.9400 41,300
3.0500 3.1640 2.9050 2.9600 118,500
Weekend
Weekend
2.9100 3.0200 2.9100 3.0000 157,000
2.8400 3.0100 2.8400 2.9000 218,700
2.8900 2.9350 2.8000 2.8600 95,500
2.8300 2.9500 2.8300 2.8600 145,000
2.7700 2.8850 2.7120 2.8300 139,100
Weekend
Weekend
2.7800 2.8400 2.7350 2.8300 109,000
2.8000 2.8500 2.7500 2.7750 159,800
2.7800 2.8800 2.7200 2.7800 252,600
2.8300 2.8900 2.7400 2.7500 297,200
2.9200 2.9700 2.8150 2.8200 434,500
Weekend
Weekend
2.8000 2.9000 2.7250 2.8900 940,400
12 · 10-Q Pre-market · 07:00 ET 10-Q ↗
2.8000 2.9000 2.8000 2.8400 298,000
2.7200 2.9200 2.7200 2.8000 527,400
2.5500 2.7500 2.5500 2.7050 377,000
2.4900 2.6100 2.4800 2.5700 318,000
Weekend
Weekend
2.5300 2.5700 2.4800 2.5000 105,500
2.4900 2.5500 2.4900 2.5000 99,100
2.4700 2.5000 2.4500 2.4800 71,700
2.4600 2.4800 2.4300 2.4700 137,900
2.5700 2.6000 2.4600 2.4800 121,500
Weekend
Weekend
2.5300 2.6000 2.5250 2.5700 194,500
2.5200 2.5800 2.4500 2.5200 375,400
2.4800 2.6350 2.4650 2.5200 281,000
2.4400 2.5190 2.4400 2.4800 96,900
2.4700 2.4950 2.4400 2.4400 101,900
Weekend
Weekend
2.5000 2.5050 2.4400 2.4800 102,900
2.4700 2.5600 2.4200 2.4900 137,700
2.4500 2.5100 2.4400 2.4700 137,800
2.4900 2.4900 2.4100 2.4600 307,000
2.4200 2.4800 2.3500 2.4400 310,300
Weekend
Weekend
2.4500 2.4950 2.3800 2.4100 402,900
2.5000 2.5500 2.4850 2.5100 148,300
2.4800 2.5200 2.4150 2.4500 135,300
2.4700 2.5000 2.4400 2.5000 116,700
2.5500 2.5650 2.4500 2.5000 384,500
Weekend
Weekend
No trading
2.5000 2.6000 2.4500 2.5000 139,300
2.5300 2.5300 2.4550 2.4800 329,400
2.7100 2.7200 2.4900 2.5000 693,500
2.5600 2.5800 2.3900 2.4500 305,500
Weekend
Weekend
2.5000 2.6100 2.4800 2.5600 238,000
2.6200 2.6300 2.4200 2.5100 888,800
2.6000 2.7900 2.5800 2.6000 2,475,600
2.4000 2.7500 2.2500 2.6000 65,510,100
11 · 8-K Pre-market · 08:30 ET 8-K ↗
1.4400 1.4700 1.4000 1.4000 171,300
Weekend
Weekend
No trading
1.4100 1.4300 1.4100 1.4300 80,200
10 · 8-K After market open · 10:49 ET 8-K ↗
1.4500 1.4520 1.3950 1.4000 65,000
1.4300 1.4400 1.4000 1.4100 141,100
1.4500 1.4500 1.4000 1.4000 23,000
Weekend
Weekend
1.4100 1.4100 1.4000 1.4100 9,700
1.4100 1.4100 1.3800 1.3900 37,500
1.3900 1.4100 1.3800 1.3800 52,600
1.4500 1.4500 1.3800 1.4000 116,500
1.4700 1.4700 1.4100 1.4300 71,000
Weekend
Weekend
1.4900 1.4900 1.3900 1.4200 60,200
1.4300 1.4900 1.4300 1.4700 72,200
1.4400 1.4500 1.4300 1.4400 134,400
1.4200 1.4400 1.4100 1.4300 27,600
1.5100 1.5100 1.4200 1.4400 71,700
Weekend
Weekend
1.4800 1.5080 1.4310 1.4500 45,300
1.4500 1.4750 1.4300 1.4600 46,700
1.4900 1.5150 1.4600 1.4700 81,900
1.4600 1.4800 1.4000 1.4700 79,300
No trading
Weekend
Weekend
1.4600 1.4900 1.4300 1.4400 72,800
1.4200 1.4650 1.4100 1.4500 39,600
1.4000 1.4300 1.3850 1.4200 100,200
1.4500 1.4750 1.4000 1.4000 50,100
1.4900 1.5000 1.4000 1.4200 197,200
Weekend
Weekend
1.5600 1.5600 1.4900 1.4900 157,900
1.5600 1.5800 1.5200 1.5500 282,900
1.5200 1.5800 1.4900 1.5400 118,800
1.5700 1.5900 1.4600 1.5000 261,900
1.4100 1.5750 1.4000 1.5500 332,600
Weekend
Weekend
1.5200 1.5550 1.4100 1.4400 399,700
9 · 10-Q Pre-market · 07:10 ET 10-Q ↗ 8 · 8-K Pre-market · 07:05 ET 8-K ↗
1.5900 1.6500 1.5100 1.5300 115,900
1.5400 1.5900 1.5100 1.5800 84,800
1.5900 1.5900 1.5250 1.5700 85,500
1.5600 1.5900 1.5600 1.5700 28,000
Weekend
Weekend
1.4700 1.5700 1.4500 1.5700 70,300
1.4700 1.4800 1.4300 1.4600 73,700
1.4600 1.4750 1.4200 1.4500 67,800
7 · DEFA14A After-hours · 16:05 ET DEFA14A ↗ 6 · DEF 14A After-hours · 16:00 ET DEF 14A ↗
1.4900 1.5000 1.4300 1.4400 142,300
1.5400 1.5400 1.4600 1.4700 63,000
Weekend
Weekend
1.5400 1.5500 1.4600 1.5000 123,700
1.5600 1.5600 1.4800 1.5200 95,700
1.5560 1.6100 1.5300 1.5500 200,700
1.6000 1.6050 1.5600 1.5800 74,800
1.5800 1.6100 1.5300 1.6000 188,700
Weekend
Weekend
1.6400 1.6490 1.5700 1.5800 352,300
1.6400 1.6600 1.5650 1.6300 255,000
1.6000 1.6700 1.5600 1.6300 597,400
1.4600 1.6800 1.4000 1.5600 6,070,600
5 · 8-K After-hours · 17:15 ET 8-K ↗
1.1200 1.2300 1.1200 1.2000 193,700
Weekend
Weekend
1.1300 1.1550 1.1250 1.1300 105,500
1.1400 1.1900 1.1400 1.1400 97,800
1.1900 1.1900 1.1500 1.1500 58,200
1.1500 1.1800 1.1300 1.1400 35,000
1.1000 1.2000 1.0950 1.1800 304,000
Weekend
Weekend
No trading
1.1020 1.1150 1.0700 1.0800 268,600
1.1280 1.1650 1.1250 1.1300 65,600
1.1000 1.1250 1.0700 1.1000 173,600
1.1400 1.1400 1.0700 1.0850 124,700
Weekend
Weekend
1.1080 1.1400 1.1000 1.1100 156,700
1.1300 1.1400 1.1000 1.1100 53,500
1.1700 1.1710 1.1300 1.1300 30,000
1.1500 1.1500 1.1300 1.1300 58,900
1.1800 1.1900 1.1500 1.1500 72,500
Weekend
Weekend
1.1700 1.2200 1.1650 1.1900 124,700
1.1500 1.1700 1.1450 1.1500 21,500
1.1600 1.1800 1.1400 1.1700 55,200
1.1300 1.1600 1.1300 1.1500 29,100
1.1200 1.1400 1.1200 1.1200 57,500
Weekend
Weekend
1.1300 1.1400 1.1000 1.1100 42,900
1.1600 1.1700 1.1200 1.1200 33,000
1.1500 1.1700 1.1300 1.1600 48,400
1.1600 1.1750 1.1350 1.1500 77,400
1.1500 1.1500 1.1200 1.1400 76,600
4 · 10-K Pre-market · 07:10 ET 10-K ↗ 3 · 8-K Pre-market · 07:05 ET 8-K ↗
Weekend
Weekend
1.1200 1.1450 1.1200 1.1300 51,400
1.1590 1.1600 1.1200 1.1200 54,200
1.1390 1.1550 1.1390 1.1400 10,900
1.1600 1.1600 1.1300 1.1300 68,000
1.1500 1.1700 1.1300 1.1600 43,300
Weekend
Weekend
1.1500 1.1800 1.1410 1.1600 90,300
1.1700 1.1700 1.1600 1.1600 28,300
1.1650 1.2000 1.1500 1.1700 88,900
1.1650 1.1850 1.1550 1.1700 50,600
1.1700 1.1800 1.1400 1.1500 51,300
Weekend
Weekend
1.1700 1.1800 1.1400 1.1600 46,600
1.1600 1.1850 1.1600 1.1800 72,700
1.1680 1.1800 1.1500 1.1600 174,400
1.1300 1.1600 1.1300 1.1500 120,200
No trading
Weekend
Weekend
1.1400 1.1600 1.1300 1.1300 46,200
1.1100 1.1700 1.1000 1.1300 128,800
1.1300 1.1300 1.1100 1.1100 64,000
1.1300 1.1600 1.1200 1.1200 42,300
1.1800 1.2000 1.1300 1.1450 105,300
Weekend
Weekend
1.1400 1.1900 1.1250 1.1600 285,000
1.0300 1.1150 0.9610 1.0900 612,000
1.0800 1.1000 1.0300 1.0500 101,100
1.1500 1.1600 1.0400 1.0900 177,900
1.1800 1.1900 1.0200 1.1300 588,000
Weekend
Weekend
1.1600 1.1700 1.1300 1.1600 122,300
1.1900 1.2000 1.1500 1.1800 53,200
1.2000 1.2300 1.1900 1.2100 46,100
1.2500 1.2500 1.1900 1.2200 128,200
1.2800 1.2950 1.2000 1.2300 49,800
Weekend
Weekend
1.2750 1.3000 1.2500 1.2600 61,200
1.2500 1.3100 1.2500 1.2700 122,700
1.2300 1.2700 1.1900 1.2400 170,600
1.2300 1.3400 1.2200 1.2300 599,200
No trading
Weekend
Weekend
1.2700 1.2700 1.2300 1.2400 32,000
1.2600 1.2750 1.2100 1.2500 72,700
1.2500 1.2800 1.2100 1.2600 75,500
1.2600 1.3000 1.2100 1.2400 141,700
1.3300 1.3300 1.2300 1.2400 160,400
Weekend
Weekend
1.3100 1.3500 1.3000 1.3100 99,300
1.3100 1.3300 1.2720 1.3100 205,200
1.2500 1.3050 1.2300 1.2800 236,600
1.1700 1.2650 1.1700 1.2300 123,400
1.2300 1.2400 1.1400 1.1800 93,300
Weekend
Weekend
1.2150 1.2200 1.1800 1.2200 108,600
No trading
1.2300 1.2400 1.1500 1.2000 100,800
1.2100 1.2200 1.1800 1.2000 38,000
1.2100 1.2400 1.1800 1.2000 45,900
Weekend
Weekend
1.2100 1.2400 1.1900 1.2000 25,600
No trading
1.1900 1.2400 1.1900 1.2100 70,300
1.2780 1.2800 1.1700 1.2100 99,800
1.2300 1.2800 1.2000 1.2300 93,100
Weekend
Weekend
1.2800 1.3000 1.2200 1.2200 88,700
1.2600 1.3700 1.1400 1.2700 503,900
1.1300 1.2710 1.1200 1.2700 367,200
1.1500 1.1600 1.1200 1.1400 30,100
1.1600 1.1800 1.1300 1.1400 104,800
Weekend
Weekend
1.1760 1.1800 1.1600 1.1700 45,900
1.1800 1.2000 1.1500 1.1500 72,400
1.1800 1.1980 1.1200 1.1600 110,500
1.1200 1.1900 1.1200 1.1800 130,200
1.1500 1.1700 1.1100 1.1400 171,600
Weekend
Weekend
1.1400 1.1900 1.1200 1.1400 268,700
1.0600 1.1200 1.0500 1.1000 503,200
1.0800 1.1100 1.0500 1.0800 150,200
1.1200 1.1200 1.0500 1.0900 132,300
1.1800 1.1800 1.0900 1.0900 181,700
Weekend
Weekend
1.1500 1.1800 1.1010 1.1700 89,800
No trading
1.1100 1.1500 1.0000 1.1100 1,348,200
1.1500 1.1500 1.0800 1.1100 116,400
1.1500 1.1800 1.1000 1.1100 111,000
Weekend
Weekend
1.1100 1.1500 1.1100 1.1300 181,400
1.1400 1.1700 1.1100 1.1100 41,500
1.2100 1.2100 1.1200 1.1500 90,700
1.1700 1.2200 1.1700 1.1900 134,400
1.2200 1.2400 1.1800 1.1800 91,300
Weekend
Weekend
1.1800 1.2600 1.1650 1.2400 79,800
1.2500 1.2500 1.1860 1.2000 30,900
1.2500 1.2600 1.1900 1.2300 44,300
1.2200 1.2800 1.2200 1.2600 93,900
1.2200 1.2300 1.1800 1.2100 44,500
Weekend
Weekend
1.2400 1.2500 1.1500 1.2300 179,600
1.3000 1.3000 1.2300 1.2600 42,800
1.2600 1.3000 1.2540 1.2600 48,300
2 · 10-Q Pre-market · 07:10 ET 10-Q ↗ 1 · 8-K Pre-market · 07:05 ET 8-K ↗
1.3500 1.3600 1.2800 1.3000 64,000
1.3800 1.4000 1.3200 1.3700 57,300
Weekend
Weekend
1.3800 1.4000 1.3600 1.4000 114,500
1.4100 1.4400 1.3800 1.3800 76,200
1.4600 1.4700 1.4100 1.4300 85,100
1.4700 1.5200 1.4500 1.4600 86,400
1.4700 1.5000 1.4600 1.4900 32,100
Weekend
Weekend
1.4400 1.4800 1.4200 1.4600 126,800

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.

13 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:25 ET Summarise
12 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 07:00 ET Summarise
11 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:30 ET Summarise
10 8-K 8-K (opens SEC filing in a new tab) After market open · 10:49 ET Summarise
9 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 07:10 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
7 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
6 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:00 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:15 ET Summarise
4 10-K 10-K (opens SEC filing in a new tab) Pre-market · 07:10 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 07:10 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise