Cytek Biosciences, Inc CTKB

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Cytek Biosciences, Inc. - Common Stock · Company · Nasdaq

Paper trade (simulated — no real money)

Fill: USD 4.4600 · FX 1 USD = 1.289800 SGD · about SGD 5.7525 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 3.75 → 4.46 · 18.9%
5.8804.6173.355 1,2 3,4 5 6,7 8,9 10,11 12 13 14 15 Jul 25Oct 25Jan 26Apr 26Jul 26

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

Price & SEC Filing History 26 Jul 2025 — 27 Jul 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.

No data yet
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
15 · 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
14 · 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
13 · 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
12 · 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
11 · 10-Q After-hours · 17:03 ET 10-Q ↗ 10 · 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
9 · DEFA14A After-hours · 16:36 ET DEFA14A ↗ 8 · 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
7 · 10-K After-hours · 16:37 ET 10-K ↗ 6 · 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
5 · 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
4 · 10-Q After-hours · 17:17 ET 10-Q ↗ 3 · 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
4.1200 4.1850 4.0700 4.1600 540,300
4.1700 4.2500 3.9700 4.1100 621,400
4.0200 4.2000 4.0100 4.1700 639,400
4.0000 4.0550 3.9550 4.0400 431,600
Weekend
Weekend
3.9600 4.1200 3.8950 3.9500 566,700
4.1300 4.2300 3.9300 4.0200 797,100
4.0400 4.1750 4.0100 4.0600 439,500
3.8900 4.0600 3.8500 4.0100 820,000
3.9100 4.0450 3.8700 3.9600 592,500
Weekend
Weekend
3.9800 4.0200 3.7500 3.8500 916,100
3.8800 3.9700 3.8600 3.9400 503,000
3.8300 3.9450 3.8100 3.9000 462,000
4.0200 4.0200 3.7050 3.7900 985,500
3.9900 4.0350 3.9050 4.0200 1,206,000
Weekend
Weekend
3.6900 4.0300 3.6500 3.9700 1,306,900
3.6200 3.7050 3.5810 3.6500 793,800
3.4500 3.6850 3.4500 3.6100 724,400
3.3800 3.4800 3.3500 3.4700 611,400
3.4100 3.4700 3.2810 3.3800 824,300
Weekend
Weekend
3.3900 3.4700 3.3700 3.4000 719,600
3.3800 3.4700 3.2800 3.3900 893,900
3.7000 3.7200 3.3950 3.4100 652,100
3.8800 3.9500 3.7000 3.7100 584,400
3.7900 3.9450 3.7100 3.8600 964,700
Weekend
Weekend
4.0900 4.0900 3.7750 3.7800 1,986,200
3.9800 4.1200 3.9700 4.0900 719,000
3.9100 4.1700 3.8800 3.9200 926,600
3.9300 3.9700 3.8550 3.9000 735,700
3.9400 4.0900 3.8000 3.9600 975,600
Weekend
Weekend
4.1200 4.1200 3.9300 3.9400 974,100
3.7600 4.1400 3.7300 4.1300 1,167,400
3.9300 3.9950 3.7200 3.7400 1,022,900
4.0700 4.1050 3.9100 3.9300 776,700
4.0300 4.2050 4.0300 4.1000 1,069,500
Weekend
Weekend
3.9900 4.1000 3.9100 4.0200 713,400
3.9400 4.0100 3.8450 3.9800 787,100
3.9600 4.0800 3.9050 3.9400 1,023,900
4.1000 4.1150 3.9450 4.0200 832,100
No trading
Weekend
Weekend
4.1900 4.2000 4.0900 4.1400 735,900
4.1300 4.2000 4.0500 4.1700 1,279,200
4.1600 4.2300 4.0500 4.0900 803,900
4.2200 4.2200 4.0200 4.1600 2,611,100
4.1500 4.1950 4.1000 4.1100 804,700
Weekend
Weekend
4.0400 4.2750 4.0400 4.1500 782,500
4.0000 4.0950 3.9100 4.0100 567,100
4.0300 4.0800 3.9780 4.0000 544,800
4.0000 4.1450 4.0000 4.0400 691,700
3.9500 4.1700 3.9350 4.0600 493,200
Weekend
Weekend
4.1200 4.1350 3.9850 4.0100 729,400
4.0700 4.1250 3.9900 4.0800 1,027,100
4.0900 4.1900 4.0350 4.1700 1,346,200
3.8500 4.0900 3.8300 4.0300 1,306,200
4.0000 4.0200 3.6800 3.7900 1,666,000
Weekend
Weekend
4.1000 4.1000 3.9000 4.0300 1,543,300
3.8900 4.1900 3.8000 4.1100 1,485,000
2 · 10-Q After-hours · 17:17 ET 10-Q ↗ 1 · 8-K After-hours · 16:11 ET 8-K ↗
3.8500 3.9750 3.8100 3.8900 1,606,500
3.8300 3.9350 3.8000 3.8800 1,107,900
3.6400 3.8600 3.6220 3.8400 1,279,500
Weekend
Weekend
3.4600 3.6650 3.4350 3.6400 1,548,600
3.4900 3.6050 3.4600 3.6000 1,544,700
3.6400 3.6900 3.4600 3.5500 1,382,800
3.7700 3.7800 3.6000 3.6000 797,400
3.6900 3.7800 3.6600 3.7500 1,138,500
Weekend
Weekend

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.

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