argenx SE ARGX

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argenx SE - American Depositary Shares · Company · Nasdaq · Healthcare / Biotechnology

Paper trade (simulated — no real money)

Fill: USD 873.7050 · FX 1 USD = 1.277900 SGD · about SGD 1116.5076 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 817.32 → 873.71 · 6.9%
1058.900861.415663.930 1 2 3 4 5 6 7 8,9 10 11,12 13 14 15 16 17 18 19 20 21,22 23 24 25,26 27 28 29,30 31 32 33 34 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
875.2500 887.0700 866.0600 873.7050 295,815
34 · 6-K After market open · 12:20 ET 6-K ↗
853.2800 897.2700 853.2800 875.7600 1,020,800
875.2700 892.8500 873.2250 890.0500 656,500
847.5300 881.1000 843.5100 869.7200 536,400
33 · 6-K After market open · 12:59 ET FORM 6-K ↗
815.5550 828.6900 814.4050 825.6100 393,100
Weekend
Weekend
842.8000 843.6100 813.0500 819.1400 389,000
842.4600 858.2100 838.7800 846.2700 510,700
809.0300 835.3100 803.0000 818.3000 464,100
817.1650 822.2830 798.4800 802.6400 277,100
832.3300 832.4900 810.7000 812.3000 241,200
Weekend
Weekend
821.9550 826.7800 805.0700 825.0300 512,200
32 · 6-K After market open · 10:01 ET FORM 6-K ↗
831.2300 832.2400 787.7300 818.6300 2,454,200
932.0800 942.6850 921.7200 928.4400 258,300
922.3900 942.3500 909.9450 930.5200 430,100
920.8250 923.3100 903.5000 912.8700 322,100
Weekend
Weekend
926.8600 928.9600 912.9600 919.2100 333,900
957.2150 972.3800 935.2400 936.0000 302,200
970.0800 970.2700 952.2700 958.9100 243,700
31 · 6-K After market open · 12:38 ET FORM 6-K ↗
965.0500 974.2450 956.2500 970.6600 311,000
954.7600 977.0100 954.7600 972.2500 264,700
Weekend
Weekend
965.2300 967.7080 956.2400 959.4900 264,400
945.8100 965.3400 944.2100 962.2200 323,700
974.6000 974.6000 934.1850 945.8200 426,500
986.4300 986.7700 963.5000 963.7900 304,400
996.5000 1001.9500 986.5600 988.2000 231,600
Weekend
Weekend
1001.6200 1003.8300 989.3300 990.3200 244,000
991.7400 1000.8700 988.5650 995.7700 245,900
981.9400 988.3350 974.2600 984.6900 200,600
985.8700 1000.5900 977.0300 979.7600 235,300
1004.5600 1008.3200 988.4000 990.5400 198,600
Weekend
Weekend
1001.6200 1002.9500 983.1000 984.3900 181,900
991.0500 1000.2400 981.7400 984.0400 226,500
991.6800 1008.9300 988.6900 1002.3100 209,900
1005.6800 1015.7900 995.0000 1007.0700 313,900
No trading
Weekend
Weekend
1040.3101 1048.4351 1031.1899 1033.1500 125,100
1070.8101 1070.8101 1052.7800 1053.4600 210,400
1049.4600 1072.7500 1042.2200 1055.3700 217,000
1033.3600 1039.1300 1021.5500 1028.5100 192,900
1010.7800 1039.3600 1005.7800 1031.6600 228,000
Weekend
Weekend
1049.8700 1053.0000 1018.6000 1023.2100 175,500
30 · 6-K After-hours · 16:19 ET 6-K ↗
1053.4700 1061.5699 1044.7600 1058.9000 322,500
29 · SC TO-T/A Pre-market · 09:27 ET SC TO-T/A ↗
1033.8300 1057.9100 1032.8500 1047.1000 361,900
1020.2900 1030.3600 1013.7500 1019.4900 142,200
1023.7600 1031.1801 1001.5050 1011.1100 318,400
Weekend
Weekend
1034.9800 1058.6899 1029.4600 1039.7800 377,200
1019.1600 1039.3000 1018.9800 1038.1200 258,300
1020.5100 1035.0900 1011.9500 1032.8600 390,900
28 · SC TO-T/A Pre-market · 07:48 ET SC TO-T/A ↗
988.4900 1009.7450 980.4500 992.9900 333,900
927.3300 1002.1570 925.6200 987.8400 684,000
27 · 6-K Pre-market · 08:54 ET FORM 6-K ↗
Weekend
Weekend
845.3600 852.0800 837.4200 851.2900 278,700
878.9400 878.9400 856.2900 856.9400 171,400
858.5400 881.4400 857.5200 876.0000 172,600
873.9100 876.3800 855.7900 864.7400 476,400
867.5500 887.4100 860.0000 866.1100 361,400
Weekend
Weekend
890.4700 894.0300 862.6000 865.0400 250,000
875.6600 884.7500 863.8800 875.3000 227,100
26 · SC TO-T/A Pre-market · 08:05 ET SC TO-T/A ↗ 25 · SC TO-T Pre-market · 07:06 ET SC TO-T ↗
868.6300 878.7200 855.1400 867.9400 358,800
840.7600 850.3550 832.7100 844.5000 264,400
24 · 6-K After-hours · 16:12 ET FORM 6-K ↗
838.9900 841.8900 826.4450 830.7900 257,800
Weekend
Weekend
872.3600 873.0800 846.1550 853.8200 294,600
861.0000 875.2500 855.8700 872.5800 256,700
874.3300 886.2000 873.8700 882.5600 227,300
23 · SC TO-C After-hours · 17:05 ET SC TO-C ↗
888.6000 895.5810 870.0000 872.2300 294,000
22 · SC TO-C After-hours · 17:10 ET SC TO-C ↗
915.8350 919.1600 888.2850 888.8200 269,300
21 · 6-K Pre-market · 06:03 ET FORM 6-K ↗
Weekend
Weekend
935.0000 935.8800 910.1920 918.2200 324,100
871.0050 927.0800 845.3000 924.6000 607,900
20 · 6-K Pre-market · 08:21 ET 6-K ↗
870.2900 874.6300 850.0200 851.7200 213,300
861.5500 877.5800 859.4200 874.7400 256,600
863.3500 871.8000 846.1700 846.1900 241,200
Weekend
Weekend
847.6600 862.5500 843.5850 860.5500 277,700
862.3050 866.2200 852.6300 857.9700 205,700
860.6700 866.7200 854.1700 862.9300 177,200
871.0400 879.8900 858.1300 859.4300 269,900
870.9100 878.1600 855.7800 876.2500 380,200
Weekend
Weekend
904.7900 904.7900 868.5450 877.6200 325,000
910.1500 925.3100 905.4470 909.4900 287,200
914.1500 920.3000 906.2280 915.3000 245,400
929.8950 935.4600 915.7780 919.9400 385,300
938.1900 940.2550 914.1900 916.8000 266,500
Weekend
Weekend
No trading
928.5900 953.5800 921.1500 939.6800 381,200
929.9650 930.4700 898.1500 909.5000 370,100
919.8200 931.8800 909.7030 927.7700 359,300
896.4400 913.8200 890.0000 912.4600 272,300
Weekend
Weekend
893.7500 907.3600 880.7300 887.1800 400,900
862.8200 895.7420 862.8200 888.6500 531,800
869.8500 878.0300 837.7400 852.5000 663,100
919.2900 933.9900 842.2200 853.4000 719,300
19 · 6-K Pre-market · 06:22 ET FORM 6-K ↗
902.4500 916.5600 897.4700 903.7500 432,900
Weekend
Weekend
No trading
901.1150 902.8900 863.9600 877.7200 352,000
890.2900 905.7450 883.7600 892.2600 259,500
881.7900 885.0700 869.8500 878.4900 314,800
892.1900 892.8900 876.6500 884.2000 423,200
Weekend
Weekend
900.0000 911.8750 891.3400 893.5200 333,200
878.9400 901.7000 874.4000 898.9400 357,400
881.1100 888.5000 861.2600 862.1800 349,300
889.8300 898.7300 870.2250 884.0000 304,700
887.0300 899.2900 871.2100 882.4100 484,400
Weekend
Weekend
846.7500 896.6000 845.8750 891.3200 795,700
826.7200 850.2500 822.0000 842.2700 228,900
799.1700 814.8100 793.2050 813.1400 314,400
18 · 6-K Pre-market · 07:16 ET FORM 6-K ↗
823.6800 823.6800 799.6800 802.1700 359,200
832.8600 840.2900 825.5500 836.0900 252,100
Weekend
Weekend
838.4900 841.8500 829.6000 835.9900 192,500
821.0200 843.9000 820.8500 838.4900 230,100
817.3200 832.5900 811.8400 820.6300 204,400
808.7100 811.3800 799.3780 808.4300 167,900
No trading
Weekend
Weekend
819.6200 827.3700 804.2000 806.4600 171,200
799.9450 827.6550 797.8300 816.2200 429,800
798.3500 807.1150 796.7000 804.2500 401,100
775.6200 799.6900 775.6200 797.7700 290,900
798.9700 799.1100 775.8700 776.2600 306,700
Weekend
Weekend
819.8150 820.3250 797.7700 799.3200 326,400
804.5700 827.9450 797.7500 822.1300 197,200
797.5200 810.7000 789.9850 802.7000 381,600
808.6700 824.5200 806.6650 812.8100 346,200
812.0300 827.8050 795.9850 813.2800 498,000
17 · 6-K Next filing day · accepted 08 May, 21:08 ET FORM 6-K ↗
Weekend
Weekend
787.0800 792.0000 778.1300 782.1700 354,200
840.6700 840.6700 777.1380 787.3100 704,300
16 · 6-K Pre-market · 08:46 ET 6-K ↗ 15 · 6-K After-hours · 16:28 ET FORM 6-K ↗
799.4400 815.6200 798.1250 807.5500 433,300
815.8600 815.9300 790.5400 794.7000 248,200
788.5300 811.6150 785.0750 811.0900 212,000
Weekend
Weekend
781.7500 794.3200 775.0200 783.5000 188,500
782.8500 788.5900 778.4700 781.7200 410,900
764.4000 776.4900 754.8450 776.0200 426,000
786.7100 788.5150 766.9300 775.0300 233,000
780.2500 797.7000 779.4100 783.7400 227,100
Weekend
Weekend
785.2800 787.0750 778.2000 780.2500 339,100
797.3900 803.8400 787.6900 787.9500 230,400
805.0500 805.7400 790.5000 793.2200 380,800
820.0800 820.0800 800.8500 805.3800 270,400
847.2000 847.2000 831.4300 834.4500 217,800
14 · 6-K Pre-market · 06:02 ET FORM 6-K ↗
Weekend
Weekend
849.0300 852.2800 842.9350 849.0400 235,900
840.3600 843.1100 825.4700 828.3500 255,500
833.6600 849.6050 833.6100 840.8700 262,200
815.8100 835.2100 814.5000 828.3500 228,300
800.0100 812.3100 790.8200 809.2700 337,000
Weekend
Weekend
808.2700 809.7200 793.9500 799.6500 312,200
781.1500 801.6800 777.6650 800.5000 298,700
781.1400 788.0850 772.3400 785.0700 316,500
741.3650 766.2100 734.0000 765.4300 361,800
740.6700 752.7410 734.8120 748.2500 314,600
Weekend
Weekend
No trading
735.4600 759.9950 735.4600 746.4200 372,100
741.2900 751.9200 731.4400 743.1200 365,200
711.0250 734.1700 708.1000 730.2500 370,200
697.4500 705.6320 693.5600 704.3100 307,600
Weekend
Weekend
695.8850 705.6600 690.8500 691.4000 419,000
693.7200 700.7200 686.3550 692.8300 268,900
685.6800 700.9600 685.6800 697.0500 421,300
671.8400 677.8500 666.7900 677.5000 275,000
684.9800 692.9000 678.6700 681.8500 391,100
Weekend
Weekend
13 · 6-K After-hours · 16:24 ET FORM 6-K ↗
686.6700 688.0900 661.8500 663.9300 397,200
681.6600 687.1700 678.9900 684.5000 340,600
12 · 20-F Pre-market · 06:13 ET 20-F ↗ 11 · 6-K Pre-market · 06:05 ET 6-K ↗
700.4300 701.0150 683.1300 684.7700 348,100
712.1400 716.2500 700.0000 706.0300 251,200
706.1300 709.2900 701.1700 703.3000 246,500
Weekend
Weekend
710.5000 713.6400 694.1400 700.4500 300,400
721.1800 725.9400 705.5350 708.8500 340,500
743.8400 744.8500 727.4400 728.0900 362,100
742.1850 748.3000 737.0600 742.7900 340,800
715.7300 741.0100 713.2600 740.4000 441,100
Weekend
Weekend
713.4000 725.2800 705.8850 717.8000 536,300
10 · 6-K Pre-market · 06:15 ET FORM 6-K ↗
745.3400 745.6000 721.0050 728.1100 414,200
756.6600 757.6950 741.4000 749.5600 338,300
748.1300 757.2300 743.7800 748.7200 453,200
759.4900 766.1900 754.4900 756.7600 243,700
Weekend
Weekend
774.0000 782.5800 761.7200 766.9200 464,700
801.2000 801.2000 758.9900 771.5300 830,000
9 · 6-K Pre-market · 08:37 ET 6-K ↗ 8 · 6-K Pre-market · 06:20 ET FORM 6-K ↗
838.2800 848.8300 815.8300 816.9500 434,100
834.9100 842.0900 827.8300 840.2800 270,600
821.4600 838.4800 821.4600 826.2500 292,500
Weekend
Weekend
849.5400 852.2450 828.2850 844.4100 245,300
845.9400 852.4840 830.3300 847.2600 339,700
838.5100 846.0000 835.3700 845.3500 166,400
827.5000 852.8300 823.1700 843.5500 288,600
No trading
Weekend
Weekend
834.1100 851.9200 817.2000 821.9600 278,900
835.0900 846.4000 830.5600 833.5400 304,200
832.1500 837.5450 822.6000 834.5500 197,000
830.7900 849.2700 830.7900 833.1600 338,400
818.1500 834.4850 816.0000 828.2400 490,500
Weekend
Weekend
814.6550 832.9000 810.7400 811.4500 375,200
842.6100 861.7250 817.1600 820.3100 483,800
859.3900 861.1600 840.9700 850.8700 378,600
838.1300 857.3750 838.1300 851.7200 695,700
842.0400 853.1350 834.5350 835.6800 243,500
Weekend
Weekend
849.4300 855.4430 832.2800 840.5000 292,600
845.3000 852.6100 840.5500 847.7200 189,700
859.9650 864.2400 840.9300 846.7550 299,400
845.8800 881.8900 845.8800 864.4200 634,300
820.5600 835.4200 817.0180 833.1600 269,700
Weekend
Weekend
828.7300 833.8000 810.5150 814.7400 370,700
820.2900 827.6000 816.2900 827.0200 438,800
802.6600 819.1500 802.6500 816.3700 392,700
785.5300 813.0800 781.0700 809.6400 494,200
No trading
Weekend
Weekend
815.3500 818.7800 795.0200 800.0100 440,200
809.4200 813.9800 798.1450 813.2400 330,700
809.2600 812.0900 797.4750 799.3300 415,700
807.8400 816.2000 801.5500 810.5100 380,100
7 · 6-K Pre-market · 06:05 ET FORM 6-K ↗ 6 · 6-K After-hours · 16:05 ET FORM 6-K ↗
782.2900 799.9100 770.6700 796.0000 497,800
Weekend
Weekend
809.7850 816.4500 787.4400 788.4900 462,300
826.6700 828.7800 792.5200 795.5700 388,200
796.8400 830.2950 796.0300 822.9400 538,400
805.9700 811.8500 794.6500 803.7400 541,100
834.4600 835.5300 787.0200 800.8800 731,200
5 · 6-K Pre-market · 07:26 ET FORM 6-K ↗
Weekend
Weekend
842.9300 855.4300 839.3200 839.9900 216,700
No trading
836.7700 844.1550 835.0200 840.9500 120,600
838.5300 841.1800 835.0300 837.9000 132,500
843.2900 844.7700 836.4900 837.4500 168,000
Weekend
Weekend
854.4400 854.4800 842.8600 844.9200 102,700
No trading
845.9500 858.7990 844.7500 849.9500 103,500
852.0400 856.5900 843.0300 845.9500 250,200
855.0200 860.5580 848.3900 852.0400 279,800
Weekend
Weekend
851.5150 863.1050 849.5300 854.9900 371,100
858.3450 861.3400 845.3100 847.0500 246,600
865.3300 878.1900 859.2360 862.0500 306,700
853.9900 858.4350 842.2050 851.4200 344,700
828.9600 853.9640 827.5200 850.9500 634,100
4 · 6-K Pre-market · 06:15 ET FORM 6-K ↗
Weekend
Weekend
885.4500 887.6000 875.6000 877.9400 288,800
887.1400 897.0400 884.3400 889.4900 303,800
900.0700 903.2800 886.7800 890.1100 333,800
900.1400 904.7900 886.5000 889.4100 345,800
912.8800 917.7100 899.6300 900.7600 395,700
Weekend
Weekend
916.1500 917.0000 891.0850 901.1700 229,200
926.4700 928.3400 915.8300 915.9700 164,400
915.3600 934.6200 914.8700 921.8000 378,800
905.0600 919.8200 902.1400 915.3600 493,800
904.0500 905.9300 886.2450 894.9000 355,400
Weekend
Weekend
914.7400 916.9900 905.2250 911.9800 126,200
No trading
923.8100 928.9950 915.3600 917.6300 268,700
910.9600 920.1600 900.1600 917.9300 380,700
914.6150 918.3100 897.5000 906.7400 576,600
Weekend
Weekend
918.5100 927.8500 915.8800 918.9200 328,200
930.6000 932.2900 912.9200 918.5000 271,700
919.5700 928.1200 912.5700 914.5900 324,300
3 · 6-K After-hours · 17:01 ET FORM 6-K ↗
921.1700 929.8000 908.1600 918.5300 365,800
911.5200 934.1300 910.0200 929.6100 430,100
Weekend
Weekend
881.2500 914.8700 880.9700 907.9800 457,900
887.5700 898.7550 884.3000 891.7300 321,200
888.0100 907.4700 885.8100 889.8900 540,400
872.4900 893.5180 870.0500 889.6400 280,100
852.3900 872.9100 852.3900 869.8300 238,900
Weekend
Weekend
856.4800 857.4800 838.9400 854.6500 282,600
832.7000 855.7000 831.2600 851.0150 186,600
817.9350 834.2800 812.7900 832.3500 212,000
825.3600 850.6600 824.7000 831.4800 292,800
815.6400 832.3800 809.1450 826.2800 337,000
Weekend
Weekend
828.8450 828.8450 805.0200 818.5000 402,900
818.7200 831.9900 749.7500 820.3600 925,800
2 · 6-K Pre-market · 08:04 ET 6-K ↗ 1 · 6-K After market open · 11:11 ET FORM 6-K ↗
839.0000 842.1850 821.3600 821.9700 511,600
822.3300 838.6800 822.3300 836.3900 266,100
824.5100 835.2200 817.4200 829.8300 346,500
Weekend
Weekend
815.7500 820.0230 809.3700 817.3200 198,900

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.

34 6-K 6-K (opens SEC filing in a new tab) After market open · 12:20 ET Summarise
33 6-K FORM 6-K (opens SEC filing in a new tab) After market open · 12:59 ET Summarise
32 6-K FORM 6-K (opens SEC filing in a new tab) After market open · 10:01 ET Summarise
31 6-K FORM 6-K (opens SEC filing in a new tab) After market open · 12:38 ET Summarise
30 6-K 6-K (opens SEC filing in a new tab) After-hours · 16:19 ET Summarise
29 SC TO-T/A SC TO-T/A (opens SEC filing in a new tab) Pre-market · 09:27 ET Summarise
28 SC TO-T/A SC TO-T/A (opens SEC filing in a new tab) Pre-market · 07:48 ET Summarise
27 6-K FORM 6-K (opens SEC filing in a new tab) Pre-market · 08:54 ET Summarise
26 SC TO-T/A SC TO-T/A (opens SEC filing in a new tab) Pre-market · 08:05 ET Summarise
25 SC TO-T SC TO-T (opens SEC filing in a new tab) Pre-market · 07:06 ET Summarise
24 6-K FORM 6-K (opens SEC filing in a new tab) After-hours · 16:12 ET Summarise
23 SC TO-C SC TO-C (opens SEC filing in a new tab) After-hours · 17:05 ET Summarise
22 SC TO-C SC TO-C (opens SEC filing in a new tab) After-hours · 17:10 ET Summarise
21 6-K FORM 6-K (opens SEC filing in a new tab) Pre-market · 06:03 ET Summarise
20 6-K 6-K (opens SEC filing in a new tab) Pre-market · 08:21 ET Summarise
19 6-K FORM 6-K (opens SEC filing in a new tab) Pre-market · 06:22 ET Summarise
18 6-K FORM 6-K (opens SEC filing in a new tab) Pre-market · 07:16 ET Summarise
17 6-K FORM 6-K (opens SEC filing in a new tab) Next filing day · accepted 08 May, 21:08 ET Summarise
16 6-K 6-K (opens SEC filing in a new tab) Pre-market · 08:46 ET Summarise
15 6-K FORM 6-K (opens SEC filing in a new tab) After-hours · 16:28 ET Summarise
14 6-K FORM 6-K (opens SEC filing in a new tab) Pre-market · 06:02 ET Summarise
13 6-K FORM 6-K (opens SEC filing in a new tab) After-hours · 16:24 ET Summarise
12 20-F 20-F (opens SEC filing in a new tab) Pre-market · 06:13 ET Summarise
11 6-K 6-K (opens SEC filing in a new tab) Pre-market · 06:05 ET Summarise
10 6-K FORM 6-K (opens SEC filing in a new tab) Pre-market · 06:15 ET Summarise
9 6-K 6-K (opens SEC filing in a new tab) Pre-market · 08:37 ET Summarise
8 6-K FORM 6-K (opens SEC filing in a new tab) Pre-market · 06:20 ET Summarise
7 6-K FORM 6-K (opens SEC filing in a new tab) Pre-market · 06:05 ET Summarise
6 6-K FORM 6-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
5 6-K FORM 6-K (opens SEC filing in a new tab) Pre-market · 07:26 ET Summarise
4 6-K FORM 6-K (opens SEC filing in a new tab) Pre-market · 06:15 ET Summarise
3 6-K FORM 6-K (opens SEC filing in a new tab) After-hours · 17:01 ET Summarise
2 6-K 6-K (opens SEC filing in a new tab) Pre-market · 08:04 ET Summarise
1 6-K FORM 6-K (opens SEC filing in a new tab) After market open · 11:11 ET Summarise