Protagonist Therapeutics, Inc PTGX

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Protagonist Therapeutics, Inc. - Common Stock · Company · Nasdaq · Healthcare / Biotechnology

Paper trade (simulated — no real money)

Fill: USD 138.4300 · FX 1 USD = 1.277900 SGD · about SGD 176.8997 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 74.86 → 138.43 · 84.9%
158.620116.74074.860 1,2 3 4,5 6,7 8,9 10 11,12 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
136.8900 139.5229 135.0000 138.4300 409,154
137.4900 141.3750 136.0700 139.5300 404,400
139.7100 141.8500 137.9630 138.0800 989,900
135.8700 140.8200 134.3250 137.9900 774,500
130.0900 134.9700 128.0100 134.4400 654,200
Weekend
Weekend
136.1600 136.5550 126.3900 128.7500 886,700
136.7200 139.1100 136.0250 136.5500 707,700
138.0600 141.1300 135.6200 136.2800 679,000
146.0000 146.0000 137.8100 138.4900 1,031,800
145.8300 152.1850 143.6900 144.8800 898,500
Weekend
Weekend
139.9100 146.3000 138.9500 143.7300 762,200
139.5700 142.1800 137.9900 139.9100 1,000,000
137.3400 144.1000 137.2500 140.9200 927,300
140.3400 141.0000 136.0900 138.6900 635,700
139.9600 142.5100 138.0800 140.6300 1,273,800
Weekend
Weekend
140.9900 141.7100 138.3700 140.0600 760,300
139.2300 143.6800 138.3700 139.1900 886,200
141.6000 143.7400 140.4400 140.8900 787,700
143.4500 144.0900 138.8800 140.9700 508,000
142.2100 143.6850 140.2400 142.4400 925,500
Weekend
Weekend
141.8100 143.4500 138.2300 141.8600 809,200
138.7600 140.8000 134.1000 137.3400 989,200
144.2700 145.2800 137.8800 138.7000 513,200
144.6400 147.7100 144.5000 145.0700 806,200
143.2200 145.3700 141.0900 144.9800 822,200
Weekend
Weekend
143.0900 144.5800 140.4350 143.0000 1,837,200
144.3900 146.5000 142.3100 143.7000 558,900
144.1900 146.1900 140.8800 142.8400 507,000
147.4800 147.9900 142.0000 143.4000 637,500
150.2300 151.2400 146.8300 147.7800 608,000
Weekend
Weekend
147.1800 150.4800 145.8200 148.1800 478,000
143.2900 146.5100 142.0000 145.1600 543,100
146.0500 151.1850 144.4600 145.0900 530,500
143.6100 147.2900 142.0000 145.9400 700,100
No trading
Weekend
Weekend
146.4700 147.9900 144.0100 145.7200 501,300
146.6800 149.4900 144.0000 148.8000 353,900
148.0000 149.4200 144.6100 146.0800 561,500
147.7500 150.3400 144.7250 146.4900 534,100
143.2600 149.2950 141.9480 147.7500 567,300
Weekend
Weekend
147.7300 147.9500 142.4300 144.3300 500,200
150.3500 151.6800 147.1100 149.5000 381,600
150.3600 152.0700 147.6900 151.5000 335,500
155.8400 157.9800 150.0900 150.5900 664,500
154.3200 158.0800 149.9400 154.7200 483,300
Weekend
Weekend
152.1000 154.9500 150.8200 154.3200 402,500
152.4500 155.2500 148.2750 150.6900 518,600
160.8100 160.8100 154.2200 154.9400 785,900
157.9600 160.0000 156.8100 157.3400 471,600
155.1100 158.9500 153.6000 158.6200 507,000
Weekend
Weekend
150.2300 155.5300 149.1700 155.1000 426,300
153.1500 154.9900 150.9200 151.4200 444,800
148.2100 152.7000 147.3300 152.0100 417,200
151.8800 151.8800 147.3700 148.2900 306,500
149.3100 151.6000 147.3960 150.0000 545,800
Weekend
Weekend
146.1800 147.3200 144.4400 145.8700 321,100
145.0100 148.0000 139.9500 146.1800 837,600
12 · 10-Q After-hours · 16:17 ET 10-Q ↗ 11 · 8-K After-hours · 16:11 ET FORM 8-K ↗
137.4900 138.0830 135.3900 137.3200 430,500
133.0200 138.0530 132.2600 135.8100 634,700
135.7800 135.9750 131.6800 132.2800 451,100
Weekend
Weekend
138.3600 138.3700 131.6900 136.6400 548,800
131.7700 138.9500 130.6300 138.6400 556,300
136.9000 137.4300 132.7200 133.0000 560,700
136.6900 137.0000 133.2000 136.8400 282,400
136.1100 139.9200 135.4250 135.5600 416,700
Weekend
Weekend
136.1100 137.2000 133.7800 136.1100 298,400
133.7900 137.3250 132.0000 135.4300 605,800
139.4500 139.4500 134.4200 135.4400 710,400
133.3400 139.7200 131.0500 138.3100 580,500
141.7900 143.2900 133.6400 134.2700 762,600
Weekend
Weekend
131.3700 141.0800 131.3700 140.9100 519,100
135.2100 136.5550 131.3500 132.0200 602,100
128.0000 139.2200 126.9700 135.4600 836,100
131.8900 131.9500 128.6800 131.2700 565,000
130.0500 131.3600 125.3230 129.8900 541,000
Weekend
Weekend
137.1200 137.1200 130.6400 131.4200 1,060,800
139.2600 141.1000 136.9850 137.6400 1,613,300
139.5000 140.9500 136.0800 140.0700 931,400
132.5900 141.0800 130.6900 140.8500 1,374,300
131.2500 132.7850 128.1500 131.5000 639,800
Weekend
Weekend
No trading
125.8900 131.8700 125.2400 131.6200 708,400
122.9600 126.0400 122.4800 125.1700 521,800
122.0400 124.7150 119.5700 122.5800 560,900
121.3400 126.5900 118.2700 121.6300 741,000
Weekend
Weekend
122.0000 123.4300 118.3100 121.8800 2,593,900
122.3100 126.2500 121.4800 122.6300 1,048,000
119.3800 124.8000 118.8050 122.1500 1,132,400
114.6600 119.8500 114.5600 118.9600 700,500
113.2400 116.5700 113.2400 115.0300 1,193,500
Weekend
Weekend
No trading
10 · 8-K After-hours · 16:30 ET FORM 8-K ↗
112.8800 114.4850 111.1700 112.8600 1,533,700
110.8400 113.4700 110.1100 111.4400 742,500
112.8300 113.6600 108.5300 110.6400 504,800
109.1000 112.7700 109.1000 112.4600 536,300
Weekend
Weekend
109.8500 111.7750 109.6000 109.7800 448,900
106.2800 110.8200 106.2800 109.7900 564,100
105.5000 111.4500 104.8900 105.7700 770,500
99.7600 106.4800 98.0800 105.8700 878,600
98.9500 101.1600 96.7000 98.0300 567,700
Weekend
Weekend
103.1400 103.2900 96.3800 97.3800 887,400
96.3900 103.5450 96.1400 102.7900 658,800
93.9300 95.6100 93.0000 95.4100 579,200
93.8400 97.7100 92.7500 93.2300 723,600
97.8800 98.5000 93.5000 94.9200 816,600
Weekend
Weekend
100.6400 102.4000 98.8400 99.5600 597,800
102.7400 103.7100 99.4250 100.4100 551,500
100.0500 102.4900 98.9400 102.2100 404,800
100.0300 100.8000 97.9260 99.9800 360,700
No trading
Weekend
Weekend
102.0100 102.4150 98.8900 99.1900 393,900
101.1300 103.4300 98.6010 102.0100 402,900
99.0300 101.9000 98.3700 100.8800 371,700
100.2500 100.2600 96.6920 98.3700 492,700
103.2200 104.1600 100.5800 100.7400 447,200
Weekend
Weekend
104.2200 104.3900 101.7200 102.1800 560,800
104.3100 105.7200 101.6200 105.5500 426,500
99.5800 104.1950 98.2200 103.8800 518,200
103.5000 103.6600 98.3600 99.9500 645,700
100.1400 105.3250 99.9400 103.5000 572,000
Weekend
Weekend
98.5100 100.1500 97.0000 99.3600 505,000
103.5500 104.6800 98.5300 98.8500 836,900
103.0000 105.0250 98.9500 103.9700 989,900
9 · 10-Q After-hours · 16:27 ET 10-Q ↗ 8 · 8-K After-hours · 16:08 ET FORM 8-K ↗
100.3200 101.3700 97.4500 99.2100 398,000
98.0000 101.0800 98.0000 99.5200 457,400
Weekend
Weekend
99.1600 99.4650 97.0800 98.3700 447,700
99.0000 99.7550 97.2000 98.9700 577,600
100.2700 100.3500 98.1100 98.5200 576,700
7 · DEFA14A After-hours · 16:50 ET DEFA14A ↗ 6 · DEF 14A After-hours · 16:44 ET FORM- DEF 14A ↗
99.5000 102.4650 97.7900 101.2100 663,200
100.4400 103.4200 98.3100 98.5100 994,900
Weekend
Weekend
102.5400 105.9430 98.9050 100.0000 778,700
106.3400 106.9800 102.2600 102.6200 651,600
106.4300 107.0000 103.9300 105.5500 345,900
104.9400 106.4500 103.6400 105.8900 494,900
105.4650 106.4600 104.0000 105.4700 540,500
Weekend
Weekend
105.5700 106.9030 103.5100 105.9800 1,006,300
103.5900 104.5300 102.4550 103.7300 417,800
105.9600 106.6600 103.0200 105.4400 770,200
97.5800 104.9700 97.5800 104.7200 849,500
98.6100 101.0400 95.4000 97.5700 1,088,600
Weekend
Weekend
104.2800 104.2800 98.4000 98.8200 577,300
101.4500 105.1050 101.4500 104.0850 699,500
104.2800 105.8800 101.6150 102.0900 819,200
103.4300 103.9600 101.3100 103.7500 785,300
103.7200 104.4600 101.8350 102.8900 528,500
Weekend
Weekend
No trading
101.5900 104.3100 101.5900 103.7800 601,600
105.5100 107.8400 102.7000 103.6700 583,900
101.2300 105.9900 101.0600 105.4000 944,700
99.0400 102.7600 98.0800 99.8700 884,400
Weekend
Weekend
101.2700 101.9200 97.8850 98.9700 785,500
103.2500 105.6900 102.0100 102.1700 1,045,300
99.4200 105.0000 97.1600 104.3100 812,200
97.1600 100.9800 97.1600 100.3900 940,200
100.0000 102.0600 98.1500 98.5400 925,400
Weekend
Weekend
101.4700 101.8000 97.8300 98.8700 2,029,200
98.4500 105.6900 98.3450 101.6800 1,919,700
97.0400 99.5000 90.5800 97.0900 1,981,500
96.7000 99.3100 96.4250 97.2300 799,200
93.2800 97.0770 92.6050 96.7500 695,800
Weekend
Weekend
96.9100 98.3000 90.9200 92.3600 896,000
95.0100 96.3900 93.6710 95.4200 750,600
96.8400 98.3200 95.9700 96.4800 788,700
96.0200 98.2100 95.4000 97.0500 856,000
91.1400 97.5350 91.1400 96.6600 726,800
Weekend
Weekend
89.9600 92.9720 87.8200 92.0900 572,400
94.5400 94.5400 90.3500 91.4100 677,500
91.9400 95.4300 91.0300 94.8300 782,700
92.5600 93.5100 90.0200 91.3000 529,500
92.0800 94.8900 90.9850 94.2400 942,700
Weekend
Weekend
88.1800 92.2300 87.1500 92.0800 937,000
87.5000 88.8250 85.6000 88.3900 706,000
5 · 10-K After-hours · 16:28 ET 10-K ↗ 4 · 8-K After-hours · 16:08 ET FORM 8-K ↗
87.5000 88.4600 86.2550 87.1000 285,800
86.7200 89.5900 86.0000 87.3900 668,500
82.3200 86.8450 77.0000 86.5900 710,800
Weekend
Weekend
83.2600 83.6850 80.7200 82.7600 578,000
81.8800 83.2200 80.5900 83.0900 384,600
81.5900 83.3950 81.5900 82.9900 407,900
81.0700 83.1300 80.3950 82.4600 364,700
No trading
Weekend
Weekend
81.9900 84.0550 80.5900 81.4900 428,900
84.0700 84.7200 81.5600 81.9300 352,500
83.4600 84.8200 80.9900 83.4900 350,200
83.0000 84.9000 82.6450 83.8800 442,600
83.4700 83.9000 82.2100 83.3200 322,000
Weekend
Weekend
82.1100 85.0500 81.5500 84.4900 812,800
83.6200 85.4300 80.2030 80.6700 457,100
85.5900 85.6000 81.0000 83.3000 1,077,500
83.0900 86.0950 82.8800 85.5900 769,400
81.8000 84.5500 81.1400 83.0500 1,414,700
Weekend
Weekend
79.7700 82.5600 78.7450 81.8000 1,174,000
81.3900 82.4900 77.6950 79.7300 952,700
82.4500 83.6900 80.0000 81.7600 777,200
82.0000 83.8700 82.0000 83.0800 507,800
82.5300 84.3150 81.9430 82.3000 529,200
Weekend
Weekend
84.6200 85.5000 82.6650 83.1000 569,300
82.8300 85.2000 80.6500 84.7900 609,100
82.5100 83.9600 80.2700 83.8900 1,086,100
81.1600 83.6300 79.8700 83.4200 901,300
No trading
Weekend
Weekend
84.5100 84.6700 81.4700 81.9900 664,700
84.6000 87.4400 84.3300 84.7500 839,300
80.8500 85.3000 80.4700 85.2300 1,052,600
79.8800 82.7400 79.6400 81.3600 799,000
79.4900 81.0900 78.7500 80.2500 739,800
3 · 8-K Pre-market · 08:00 ET FORM 8-K ↗
Weekend
Weekend
80.2000 81.4000 79.3800 80.2200 983,300
81.0500 82.1400 79.2200 80.2000 1,487,700
82.2500 82.6900 79.1800 82.3400 1,220,400
83.2500 85.0000 81.6700 82.2700 731,000
87.5300 87.5300 82.9200 84.1800 1,028,100
Weekend
Weekend
86.5400 88.1550 85.1900 87.1800 751,700
No trading
87.3200 88.2300 85.9800 87.3400 615,700
87.9400 88.3150 86.1200 87.2600 344,000
88.6600 89.1000 87.3000 87.9300 373,100
Weekend
Weekend
88.7800 89.6100 87.4700 88.7800 390,100
No trading
88.5300 89.4700 87.4700 88.8400 154,100
87.2700 90.0000 87.2700 88.7300 329,100
85.3300 88.1300 84.8800 87.4100 661,100
Weekend
Weekend
86.5800 87.7300 84.8100 86.0500 1,736,500
89.3500 90.0150 84.1100 85.7900 2,227,500
91.4100 92.5400 88.3800 89.3400 821,600
93.9300 94.5400 90.1800 91.5400 881,100
95.4100 96.5400 94.1700 94.7900 960,000
Weekend
Weekend
92.7200 95.3900 91.7000 95.3500 1,286,800
92.0100 93.0700 91.0700 92.2500 800,700
88.5600 91.9600 88.3400 91.3800 1,308,400
89.7300 92.8000 88.3000 88.5600 1,440,000
90.9400 91.8900 89.5100 90.2500 1,455,800
Weekend
Weekend
87.9600 90.1800 87.5400 89.6500 1,473,100
86.0700 88.1000 85.1300 87.3300 736,800
85.4300 87.1000 84.7300 86.0700 715,200
85.7500 86.3900 83.5200 84.6500 992,800
89.6100 89.8500 85.0000 85.6400 999,700
Weekend
Weekend
90.0000 90.4600 88.7800 90.0000 337,400
No trading
90.0000 90.8500 89.5000 90.0700 1,205,200
88.4600 89.8800 87.7600 89.8600 910,900
86.5900 88.3350 85.7100 87.6900 872,400
Weekend
Weekend
84.2400 86.6700 83.6390 85.4000 907,100
86.3600 86.9500 83.9950 84.2000 789,500
84.5400 86.6450 84.4500 85.1300 989,300
84.7700 86.3600 83.7900 84.3900 778,800
82.7900 85.4500 82.7900 84.7700 794,800
Weekend
Weekend
82.1800 85.9000 82.0600 84.6100 755,300
84.8400 86.0200 83.1700 83.2400 711,800
85.4100 86.9000 84.5000 84.8500 1,361,100
83.5200 86.0000 83.0000 85.5600 952,400
80.5800 84.8400 79.5600 83.2300 1,161,400
Weekend
Weekend
80.1200 80.7500 76.7000 79.5400 882,300
2 · 10-Q After-hours · 16:52 ET 10-Q ↗ 1 · 8-K After-hours · 16:19 ET FORM 8-K ↗
77.0700 79.9200 77.0000 79.7800 1,139,600
76.5000 78.1200 75.5500 77.8800 622,900
75.4400 78.0100 75.4400 76.5000 1,029,000
78.6200 80.4300 75.5350 75.9500 1,041,500
Weekend
Weekend
77.5300 79.0100 76.6600 78.6200 725,800
77.2100 78.7400 76.7500 77.8500 839,200
78.0600 79.0000 76.4850 76.6900 921,200
75.0600 78.7800 74.8000 78.5100 1,246,000
75.1300 76.0750 74.0250 75.2500 938,400
Weekend
Weekend
74.1300 75.5250 73.8350 74.8600 690,700

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.

12 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:17 ET Summarise
11 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:11 ET Summarise
10 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
9 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:27 ET Summarise
8 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:08 ET Summarise
7 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:50 ET Summarise
6 DEF 14A FORM- DEF 14A (opens SEC filing in a new tab) After-hours · 16:44 ET Summarise
5 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:28 ET Summarise
4 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:08 ET Summarise
3 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 08:00 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:52 ET Summarise
1 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:19 ET Summarise