Cytek Biosciences, Inc CTKB

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Cytek Biosciences, Inc. - Common Stock · Company · Nasdaq · Healthcare / Medical Devices

Paper trade (simulated — no real money)

Fill: USD 5.5900 · FX 1 USD = 1.277900 SGD · about SGD 7.1435 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 4.26 → 5.59 · 31.2%
6.0904.7233.355 1,2 3 4,5 6,7 8,9 10 11 12 13 14,15 16 17 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
5.3800 5.6400 5.3000 5.5900 704,855
5.5300 5.6600 5.3500 5.4300 694,300
5.2600 5.5450 5.2400 5.5000 1,093,100
5.2900 5.4900 5.2600 5.3400 806,000
5.2700 5.3400 5.1900 5.2500 700,600
Weekend
Weekend
5.4100 5.4100 5.2050 5.2500 1,045,400
5.3600 5.4800 5.2900 5.4100 905,400
5.2500 5.4750 5.2300 5.3950 1,074,600
5.1900 5.4650 5.1800 5.3500 1,426,000
5.4200 5.4200 5.1150 5.3100 1,036,700
Weekend
Weekend
5.3200 5.5550 5.3000 5.4300 3,884,000
5.2600 5.3800 5.0450 5.3600 1,712,500
5.2100 5.3400 5.1100 5.3400 1,782,600
6.1300 6.2100 5.3550 5.3800 2,051,800
5.8800 6.1050 5.8250 6.0900 1,788,100
Weekend
Weekend
5.8600 5.9400 5.7500 5.8700 1,099,500
5.9600 5.9700 5.7500 5.8100 1,571,600
5.7600 5.9850 5.6700 5.9600 1,324,200
17 · 8-K After-hours · 16:06 ET 8-K ↗
5.7400 5.8550 5.6550 5.7600 870,000
5.6200 5.7800 5.5300 5.7400 1,085,800
Weekend
Weekend
5.7100 5.7500 5.5700 5.6500 1,494,800
5.6400 5.8300 5.4800 5.7300 1,595,500
5.7300 5.8500 5.6300 5.6800 1,261,200
5.2900 5.8400 5.2600 5.7100 3,778,800
5.3200 5.3200 5.2000 5.2800 1,254,800
Weekend
Weekend
5.0900 5.3150 5.0900 5.3000 2,085,900
4.9900 5.2950 4.9100 5.2100 2,231,800
4.8900 5.0050 4.7700 4.9300 1,555,300
4.8100 5.0200 4.8000 4.8900 1,119,700
4.6200 4.8600 4.5700 4.8300 1,165,800
Weekend
Weekend
4.6100 4.6400 4.4850 4.6100 897,700
4.6900 4.7000 4.5100 4.5300 2,417,100
4.5900 4.7500 4.5500 4.7300 810,200
4.6400 4.6800 4.5400 4.6200 649,700
No trading
Weekend
Weekend
4.6700 4.7290 4.6200 4.7000 478,200
4.7000 4.7700 4.5150 4.7000 485,300
4.6600 4.7800 4.5800 4.6900 564,600
4.7750 4.8050 4.5500 4.6200 629,400
4.6300 4.8050 4.4800 4.7800 958,600
Weekend
Weekend
4.6200 4.7100 4.4800 4.6800 796,300
4.5700 4.7350 4.5600 4.6200 651,400
4.5300 4.5800 4.5090 4.5700 437,700
4.4500 4.5800 4.3600 4.5800 605,100
4.8000 4.8400 4.2900 4.4400 943,500
16 · 8-K Pre-market · 06:01 ET 8-K ↗
Weekend
Weekend
4.6900 4.8300 4.5900 4.8100 820,000
4.6300 4.7800 4.6150 4.6600 800,600
4.6700 4.9200 4.6700 4.7000 1,038,800
4.7700 4.7700 4.6000 4.6700 713,300
4.6600 4.7600 4.5700 4.7400 497,800
Weekend
Weekend
4.8400 4.9350 4.6610 4.6900 927,500
4.8200 4.9250 4.7600 4.8900 1,023,000
4.7000 4.8000 4.6500 4.7800 846,400
4.6700 4.8200 4.5300 4.7400 1,171,800
4.3150 4.6700 4.1600 4.6600 1,215,400
Weekend
Weekend
4.1700 4.2390 4.1150 4.2000 616,100
4.3700 4.4000 4.0450 4.1600 1,425,700
15 · 10-Q After-hours · 17:06 ET 10-Q ↗ 14 · 8-K After-hours · 16:22 ET 8-K ↗
4.2700 4.3100 4.1150 4.1800 993,900
4.2800 4.3620 4.1700 4.2800 819,200
4.3100 4.3500 4.1850 4.3100 889,900
Weekend
Weekend
4.2800 4.3100 4.1350 4.2200 608,900
4.3800 4.3800 4.2400 4.3100 525,900
4.4600 4.5500 4.3300 4.3800 597,800
4.4500 4.5650 4.4300 4.4600 713,000
4.4600 4.5300 4.3650 4.4100 521,200
Weekend
Weekend
4.6000 4.6200 4.4400 4.4600 597,200
4.4800 4.6900 4.4800 4.5600 766,500
4.5500 4.6000 4.4800 4.5400 514,900
4.5400 4.5900 4.4400 4.5700 790,800
4.6000 4.6500 4.5200 4.5800 768,000
Weekend
Weekend
4.5500 4.6600 4.5400 4.6200 680,800
4.6700 4.7950 4.5800 4.6400 877,500
13 · 8-K After-hours · 16:15 ET 8-K ↗
4.6200 4.7100 4.5650 4.6500 559,700
4.5100 4.7250 4.4600 4.6200 987,900
4.5900 4.6900 4.4600 4.5100 1,140,200
Weekend
Weekend
4.5800 4.6800 4.5250 4.6200 788,300
4.3900 4.6000 4.3100 4.5900 711,000
4.5600 4.5600 4.3600 4.3900 1,174,800
4.6800 4.7200 4.4400 4.5600 878,000
4.5600 4.7350 4.4950 4.6200 1,046,200
Weekend
Weekend
No trading
4.5800 4.6800 4.5350 4.5900 889,800
4.4500 4.6100 4.4200 4.5800 1,177,900
4.3200 4.4400 4.2600 4.4300 1,179,100
4.4600 4.5250 4.3400 4.3400 1,148,500
Weekend
Weekend
4.4900 4.6300 4.4200 4.4800 3,416,500
12 · 8-K After-hours · 16:32 ET 8-K ↗
4.3000 4.5500 4.3000 4.4700 1,362,400
4.1000 4.3900 4.0800 4.2800 1,488,900
3.8800 4.1150 3.8800 4.0700 1,453,300
3.8200 3.9450 3.7700 3.8600 1,885,200
Weekend
Weekend
No trading
4.0700 4.0800 3.7000 3.7700 18,260,700
4.1000 4.1800 3.9300 3.9800 2,032,600
11 · 8-K After-hours · 16:06 ET 8-K ↗
3.9100 4.1000 3.8300 4.0900 1,996,900
4.0400 4.0600 3.9000 3.9300 1,551,400
Weekend
Weekend
4.0600 4.0850 3.9000 3.9600 1,821,800
4.0500 4.0750 3.9250 4.0200 2,389,800
4.1300 4.1950 4.0300 4.0500 1,069,000
4.0600 4.1450 3.9950 4.1300 2,024,300
4.1200 4.1450 3.9700 4.0400 1,413,300
Weekend
Weekend
4.2400 4.4500 4.0210 4.0900 912,400
4.0900 4.3900 4.0900 4.3300 706,100
4.1900 4.1900 4.0200 4.0500 706,600
10 · 8-K After-hours · 16:15 ET 8-K ↗
4.2200 4.2800 4.0800 4.1900 803,400
4.2000 4.2950 4.0900 4.2400 774,500
Weekend
Weekend
4.1200 4.3050 4.0900 4.1900 1,029,900
3.9900 4.2400 3.9900 4.1200 887,500
3.9200 4.0600 3.7020 3.9900 588,300
4.0200 4.0680 3.9600 3.9700 803,300
No trading
Weekend
Weekend
3.9600 4.0600 3.9400 4.0100 853,500
3.6900 3.9850 3.6750 3.9600 723,800
3.5700 3.8390 3.5200 3.7700 861,000
3.5100 3.6100 3.4800 3.5700 968,000
3.3900 3.6150 3.3400 3.5500 1,428,200
Weekend
Weekend
3.3200 3.5950 3.3200 3.4050 1,622,100
3.7000 3.7650 3.3100 3.3550 2,533,500
4.0100 4.0200 3.6450 3.6800 2,021,400
4.1100 4.1350 4.0000 4.0400 966,100
4.5600 4.5810 4.1100 4.1200 1,113,100
Weekend
Weekend
4.4900 4.8290 4.2200 4.6100 1,361,800
9 · 10-Q After-hours · 17:03 ET 10-Q ↗ 8 · 8-K After-hours · 16:14 ET 8-K ↗
4.9900 4.9900 4.8650 4.9200 780,700
4.8100 4.9900 4.6800 4.9400 554,300
4.7300 4.9700 4.7300 4.7800 793,400
4.5900 4.7400 4.5650 4.6600 603,500
Weekend
Weekend
4.5900 4.6400 4.4550 4.6200 431,300
4.4200 4.5750 4.4140 4.5600 1,089,300
4.5200 4.5650 4.3550 4.4400 766,600
7 · DEFA14A After-hours · 16:36 ET DEFA14A ↗ 6 · DEF 14A After-hours · 16:35 ET DEF 14A ↗
4.4600 4.6400 4.4500 4.5700 576,600
4.3700 4.4700 4.3300 4.4600 610,900
Weekend
Weekend
4.2500 4.5500 4.2500 4.4000 577,600
4.6300 4.6600 4.1000 4.2600 643,300
4.6500 4.7400 4.6300 4.6500 481,700
4.6400 4.7150 4.5440 4.6300 708,000
4.6900 4.6900 4.5300 4.5700 409,900
Weekend
Weekend
4.7100 4.7300 4.5620 4.6100 578,300
4.6800 4.6940 4.5900 4.6100 477,200
4.6200 4.6990 4.6200 4.6900 306,700
4.5800 4.6600 4.5300 4.6200 517,400
4.5300 4.6450 4.5100 4.5900 616,000
Weekend
Weekend
4.6400 4.6400 4.4350 4.5300 480,900
4.6300 4.6750 4.5400 4.6200 451,500
4.8100 4.8500 4.5850 4.6600 610,700
4.5100 4.6350 4.4350 4.6000 501,600
4.5100 4.6380 4.5000 4.5200 428,200
Weekend
Weekend
No trading
4.3800 4.6500 4.3400 4.5300 436,500
4.4300 4.6300 4.4300 4.4800 397,800
4.3400 4.4850 4.3350 4.3700 584,100
4.3100 4.3600 4.1900 4.3000 640,300
Weekend
Weekend
4.5200 4.6500 4.2850 4.3200 556,800
4.5600 4.6600 4.5600 4.5800 438,200
4.6900 4.7450 4.5200 4.6000 552,500
4.6600 4.7500 4.6100 4.6300 807,300
4.5200 4.7500 4.5200 4.7100 747,700
Weekend
Weekend
4.5300 4.5850 4.4300 4.4800 1,895,100
4.2900 4.5800 4.2900 4.5100 918,100
4.2400 4.3500 4.2100 4.3400 665,000
4.1400 4.3150 4.1400 4.2500 568,700
4.0500 4.1650 4.0200 4.1300 606,400
Weekend
Weekend
4.0000 4.0510 3.9500 4.0100 804,700
4.0800 4.1150 3.9500 4.0000 1,078,700
4.1800 4.2070 4.0400 4.1600 827,200
4.3600 4.3800 4.1600 4.2300 953,500
4.1900 4.4050 4.1000 4.3600 1,099,300
Weekend
Weekend
4.2700 4.3200 4.1650 4.2200 731,000
4.3200 4.4850 4.3100 4.3800 699,000
4.4600 4.5800 4.3950 4.4100 795,000
4.2700 4.6000 4.1700 4.4400 1,150,500
4.4400 4.5800 4.2600 4.4300 716,700
Weekend
Weekend
4.2400 4.5700 4.2100 4.4800 1,398,800
5 · 10-K After-hours · 16:37 ET 10-K ↗ 4 · 8-K After-hours · 16:17 ET 8-K ↗
4.3700 4.4400 4.1600 4.4000 888,900
4.4100 4.4150 4.3300 4.3700 378,000
4.3900 4.4550 4.3400 4.3600 449,500
4.3900 4.4700 4.3200 4.3900 534,100
Weekend
Weekend
4.3000 4.4400 4.2400 4.4300 667,900
4.2000 4.4200 4.1100 4.3400 888,800
4.1700 4.2600 4.1400 4.2000 470,100
4.1700 4.3200 4.1000 4.2000 662,900
No trading
Weekend
Weekend
4.2100 4.3750 4.1900 4.2400 651,100
4.3830 4.4100 4.0850 4.1700 829,200
4.3500 4.4100 4.2550 4.3600 710,600
4.4400 4.4900 4.3100 4.3100 696,000
4.4800 4.5100 4.3400 4.4600 919,700
Weekend
Weekend
4.5300 4.6200 4.3500 4.4700 2,915,600
4.8500 4.9500 4.4400 4.5000 1,123,500
5.1000 5.1250 4.8900 4.9300 629,600
5.1600 5.2900 4.9100 5.0500 955,400
5.0000 5.2000 4.9350 5.1600 830,000
Weekend
Weekend
4.9300 5.0900 4.8600 5.0000 848,300
5.1100 5.1100 4.9100 5.0100 736,400
5.2100 5.2750 5.1100 5.1200 705,600
5.2500 5.2530 5.1550 5.1800 417,200
5.2500 5.2900 5.1350 5.2000 771,800
Weekend
Weekend
5.5700 5.5900 5.2550 5.2700 685,200
5.5300 5.7000 5.4400 5.5700 925,300
5.3800 5.5700 5.3400 5.5200 686,900
5.2600 5.3800 5.2050 5.3100 932,500
No trading
Weekend
Weekend
5.6400 5.6990 5.3850 5.4000 672,000
5.6000 5.6600 5.4700 5.6200 682,100
5.6900 5.7100 5.5000 5.5600 965,500
3 · 8-K After-hours · 16:11 ET 8-K ↗
5.8200 5.8440 5.5000 5.7000 1,034,900
5.6500 6.0400 5.6000 5.8000 1,599,700
Weekend
Weekend
5.5000 5.5750 5.4000 5.4500 984,000
5.4900 5.5320 5.3700 5.4300 541,800
5.5500 5.6100 5.4600 5.5000 924,200
5.2000 5.5950 5.2000 5.5200 974,900
4.9400 5.3400 4.9400 5.2100 839,200
Weekend
Weekend
5.0500 5.1200 4.8950 4.9200 672,300
No trading
5.0500 5.1800 5.0100 5.0500 729,700
5.0100 5.1200 4.9800 5.0400 596,900
5.0700 5.1000 4.9500 5.0500 527,000
Weekend
Weekend
5.0800 5.1300 4.9700 5.1000 479,900
No trading
5.0300 5.1000 4.9750 5.0700 465,500
5.0500 5.1000 4.9900 5.0400 771,000
4.9800 5.1850 4.9500 5.1000 1,166,300
Weekend
Weekend
4.8000 4.9500 4.7050 4.9500 3,695,900
4.8800 4.9500 4.7750 4.8000 834,600
4.7000 4.8900 4.6200 4.8100 1,031,500
4.6100 4.8100 4.5600 4.7000 1,435,900
4.8600 4.9050 4.6100 4.6400 1,415,600
Weekend
Weekend
5.0000 5.0650 4.8300 4.8600 1,248,300
5.0000 5.1640 4.9400 4.9700 1,973,100
4.8200 5.0450 4.8200 4.9400 1,596,900
4.8500 4.9350 4.7900 4.8500 972,100
4.9900 5.0900 4.8300 4.8600 1,707,700
Weekend
Weekend
5.1850 5.2100 4.9200 4.9900 1,256,300
5.3100 5.3700 4.9600 5.2000 1,073,400
5.4200 5.5000 5.3300 5.3600 686,100
5.3500 5.4500 5.3050 5.3900 902,500
5.5600 5.6100 5.3050 5.3300 1,371,100
Weekend
Weekend
5.5600 5.6700 5.4600 5.6500 658,400
No trading
5.7500 5.8200 5.5750 5.6000 1,545,500
5.9400 5.9400 5.6900 5.8200 1,069,900
5.8500 5.9400 5.7400 5.8400 1,478,600
Weekend
Weekend
5.2000 5.9450 5.1500 5.8800 2,073,500
5.3400 5.5800 5.1750 5.2100 1,614,800
5.5300 5.5400 5.2400 5.2600 1,935,300
5.2200 5.6080 5.1000 5.5300 2,682,200
6.1800 6.1800 5.2100 5.2900 4,840,300
Weekend
Weekend
4.9900 5.7800 4.7100 5.5000 6,944,600
4.7700 4.8400 4.5700 4.5700 1,080,500
4.7900 4.8700 4.6800 4.8100 1,312,300
4.6900 4.9600 4.6000 4.7900 1,095,500
4.6400 4.8500 4.5950 4.7500 1,800,000
Weekend
Weekend
4.5000 4.6500 4.3900 4.6200 1,611,700
4.2700 4.9100 4.2600 4.5400 1,873,500
2 · 10-Q After-hours · 17:17 ET 10-Q ↗ 1 · 8-K After-hours · 16:15 ET 8-K ↗
3.9300 4.0200 3.8600 4.0100 959,000
3.8500 3.9850 3.8200 3.9100 1,253,700
3.8800 3.9400 3.7950 3.9400 923,300
Weekend
Weekend
3.7800 3.9100 3.7050 3.9000 485,400
4.0000 4.0100 3.7550 3.8200 787,700
4.2000 4.2200 4.0100 4.0100 633,900
4.1400 4.2200 4.0950 4.2000 529,000
4.2600 4.4300 4.1000 4.1500 619,900
Weekend
Weekend
4.1600 4.2850 4.1300 4.2600 437,900

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.

17 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
16 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:01 ET Summarise
15 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 17:06 ET Summarise
14 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:22 ET Summarise
13 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
12 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:32 ET Summarise
11 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
10 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
9 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 17:03 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:14 ET Summarise
7 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:36 ET Summarise
6 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:35 ET Summarise
5 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:37 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:17 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:11 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 17:17 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise