Arrowhead Pharmaceuticals, Inc ARWR

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Arrowhead Pharmaceuticals, Inc. - Common Stock · Company · Nasdaq · Healthcare / Biotechnology

Paper trade (simulated — no real money)

Fill: USD 58.0200 · FX 1 USD = 1.277900 SGD · about SGD 74.1438 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 38.00 → 58.02 · 52.7%
89.59063.72037.850 1 2,3 4 5 6,7 8,9,10 11 12,13 14,15 16 17,18 19 20,21 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
57.9400 58.3800 56.5600 58.0200 871,717
58.0600 59.9000 56.9700 58.3600 1,036,500
59.7200 60.4600 58.8200 58.8400 1,371,500
56.9300 59.5700 56.9150 58.9200 1,742,300
56.9600 57.3000 56.0500 57.2300 1,647,000
Weekend
Weekend
58.4500 58.4500 55.8300 55.9000 1,772,800
58.5000 59.3960 57.4000 58.5000 2,009,600
58.4800 60.5300 57.1450 58.3700 4,160,100
60.0400 60.7300 58.0800 58.1300 2,260,400
62.4900 62.5000 60.4800 60.7300 1,194,400
Weekend
Weekend
60.7200 62.9900 60.4400 62.7500 2,765,700
60.5400 61.1300 59.2050 60.7400 1,784,700
61.6300 62.7500 60.7800 61.4800 1,819,200
62.8600 63.1850 60.5600 61.5400 1,675,500
64.7600 64.7600 62.2200 62.3500 2,249,400
Weekend
Weekend
65.5700 66.1600 63.9900 64.1900 1,487,600
65.0000 65.7550 64.5000 64.7900 1,521,700
66.8000 66.8000 65.0900 65.4500 1,742,700
65.4600 66.8300 64.5700 66.2500 2,869,600
65.0000 66.1130 63.9900 65.4600 1,589,700
Weekend
Weekend
66.5000 67.4380 65.4000 65.9200 1,616,200
67.0000 67.4500 65.4600 66.0700 1,626,300
72.1550 72.4900 66.2700 66.9600 2,554,500
68.8500 72.3650 68.0800 71.8600 3,115,700
67.4550 69.2600 66.0600 68.7900 2,347,400
Weekend
Weekend
67.8300 68.0500 66.3600 66.4800 4,016,000
68.9100 68.9100 66.9950 67.7400 3,210,100
70.4100 71.9280 64.5000 65.7900 5,111,900
82.8900 83.5500 70.6050 70.6700 4,369,900
82.9800 83.2700 79.9300 80.6700 1,329,200
Weekend
Weekend
83.7500 85.9800 82.3550 82.8500 1,335,800
81.5800 83.3800 80.3300 82.7600 1,020,300
84.6500 87.2000 82.1600 82.6300 3,668,200
84.2200 86.9600 83.5400 85.1100 1,567,700
No trading
Weekend
Weekend
85.8700 86.9600 84.2040 86.3400 757,600
85.1800 86.7900 83.4600 86.4900 1,370,500
82.8700 85.4700 82.0850 85.3700 1,525,400
81.1400 83.2700 80.7600 82.7400 1,330,600
83.1300 83.7550 80.7500 82.3900 1,595,500
Weekend
Weekend
87.9900 88.2450 84.1950 84.9100 1,282,200
89.5900 89.5900 88.0600 88.5900 857,500
88.4500 89.8250 86.8000 89.1200 859,500
88.0000 90.2110 87.0000 88.8800 983,000
86.7700 87.0100 85.5000 86.7300 1,104,400
Weekend
Weekend
87.9000 88.4600 85.9400 87.1100 1,089,800
88.2300 88.4500 85.9000 87.4700 896,800
89.5100 90.0000 87.5800 89.4100 1,363,400
87.7200 88.3500 85.9800 87.9000 975,000
86.4400 88.9400 86.2600 88.7000 929,700
Weekend
Weekend
84.7500 87.1700 83.7800 86.6400 818,000
87.6000 88.0550 84.7600 85.5900 1,101,900
89.0900 90.6100 87.1600 87.2500 1,119,600
88.9400 90.9700 88.4500 89.2400 1,042,500
87.5600 88.8800 86.5000 88.3300 854,100
Weekend
Weekend
88.0000 88.6700 86.4780 87.6500 948,300
86.4800 87.8150 85.1900 85.8300 1,051,300
87.4900 90.8100 85.9750 86.9100 1,703,400
21 · 8-K After-hours · 16:03 ET 8-K ↗ 20 · 10-Q After-hours · 16:02 ET 10-Q ↗
87.0000 89.6700 86.3250 89.5900 2,031,100
84.8150 86.0100 81.6100 86.0100 1,268,600
Weekend
Weekend
86.9300 87.1000 84.5300 84.6500 1,657,400
87.6100 88.1600 85.1900 87.3200 1,367,200
85.5600 87.8900 84.3400 86.2200 1,807,700
86.3100 86.6400 82.7700 85.7800 1,694,500
85.7700 87.9300 85.2100 85.5300 2,444,000
Weekend
Weekend
86.8400 87.5000 85.0600 85.6000 1,825,200
88.7200 89.1500 86.2600 86.7800 2,479,800
85.4600 95.4900 84.3400 88.7000 6,990,900
72.8100 74.7000 72.6200 74.5200 1,612,500
74.3500 75.0600 71.0000 71.6500 2,410,700
Weekend
Weekend
70.9200 74.8000 70.0100 74.3000 3,775,200
70.9200 73.0000 69.9500 71.3750 2,578,700
71.9100 72.6700 69.8800 71.8200 1,863,800
74.4200 75.3250 71.8100 71.9100 1,635,700
74.8200 74.8900 72.6600 74.1100 2,481,800
Weekend
Weekend
84.4800 84.4800 76.1800 76.4000 2,952,900
86.1200 87.7300 83.3020 84.0000 1,437,600
85.8700 86.8630 84.1900 85.7400 1,660,400
87.2750 87.5700 83.7900 86.9700 1,914,800
84.5900 87.8300 83.1300 86.5500 2,445,800
Weekend
Weekend
No trading
81.1400 83.9900 79.9150 83.9900 1,701,900
82.2800 82.3850 78.8100 80.4400 1,975,600
80.5200 84.0550 78.8650 81.5100 2,715,400
79.7900 80.5900 78.1700 80.5000 1,656,600
Weekend
Weekend
78.9400 82.2950 77.4500 78.8900 18,919,800
79.6500 83.4200 78.0550 79.2700 2,430,000
80.7200 82.8400 79.3100 79.8100 2,048,000
80.0000 82.5300 79.6850 79.9000 1,393,500
83.0000 83.9980 81.6800 82.0000 1,510,500
Weekend
Weekend
No trading
82.5700 84.5490 79.8000 81.8200 3,863,400
76.5500 82.4800 75.9300 81.0400 3,100,000
19 · 8-K After-hours · 16:02 ET 8-K ↗
77.5600 78.0900 74.7900 76.5500 917,100
74.5500 77.4800 74.4850 77.1500 1,115,700
Weekend
Weekend
74.5300 75.4500 73.2850 74.5200 1,182,200
71.9500 75.2000 70.7150 74.4100 1,348,700
73.3300 74.8700 69.5100 70.7300 1,546,400
75.0000 76.2000 69.7100 73.3300 1,415,100
73.2000 74.3700 72.3800 73.8600 1,204,700
Weekend
Weekend
74.4600 75.4300 72.0900 73.0900 1,227,800
73.4500 75.8900 72.0100 75.1600 1,130,300
71.3900 74.3600 70.3200 72.5500 1,484,600
74.0700 74.4100 69.3000 70.8200 2,009,700
76.9400 77.1800 73.4100 75.2000 2,287,800
Weekend
Weekend
78.7700 78.7800 76.5000 77.9100 1,441,900
78.3900 79.5500 76.1150 79.0500 1,016,700
78.5000 80.1900 77.3000 78.9900 1,288,300
75.0700 78.6900 74.0700 78.6800 1,623,500
No trading
Weekend
Weekend
75.5500 76.5100 74.5300 74.9500 1,401,600
76.2800 76.4400 74.1500 75.5400 1,580,100
74.2800 77.4900 73.7500 77.1400 1,582,600
73.9000 74.2700 69.8800 73.1800 2,120,900
77.3000 78.4900 73.0700 73.9500 1,523,600
Weekend
Weekend
78.1600 79.0000 76.2600 76.6700 1,746,900
81.2000 82.2600 78.6300 79.6900 1,799,300
78.5200 80.6700 77.0500 77.8800 2,120,800
76.8800 79.6700 76.6200 79.0400 1,544,500
72.6900 80.2650 72.6500 77.7400 2,290,000
Weekend
Weekend
76.5000 77.9200 72.6100 72.6900 2,699,900
18 · 10-Q After-hours · 16:05 ET 10-Q ↗ 17 · 8-K After-hours · 16:02 ET 8-K ↗
78.3800 79.1000 75.5200 77.9500 2,351,100
75.2100 79.4800 74.4460 79.1400 1,672,000
77.2500 77.9000 73.6150 74.9300 1,257,500
73.9200 76.5800 73.1400 76.3900 1,495,300
Weekend
Weekend
74.5600 75.5600 73.1950 74.8100 1,554,400
71.2500 73.5600 69.1500 73.4800 1,201,900
69.5100 70.8500 68.9700 70.5300 1,050,800
73.5000 74.4900 69.4900 70.1300 1,592,500
74.3950 75.0100 73.2050 73.6000 1,420,200
Weekend
Weekend
74.2900 75.3150 73.2600 73.9100 1,639,000
73.5250 76.4800 73.5250 74.4000 2,593,500
71.9700 74.1220 69.2900 73.9200 2,146,200
71.9300 73.3200 70.0900 71.0500 2,208,000
69.2100 70.4790 68.0900 69.2500 1,198,500
Weekend
Weekend
69.7700 70.8900 68.8200 69.5100 4,331,900
71.4750 72.1800 67.4200 67.9800 1,952,900
66.6900 70.9700 66.6100 70.9500 2,202,200
63.9800 67.4900 63.9800 66.6900 1,467,200
65.1000 67.2900 63.2700 63.7900 1,765,100
Weekend
Weekend
66.5200 66.5200 64.8130 65.1400 1,670,600
64.2900 66.2800 63.5500 66.2300 1,423,000
63.5000 64.8000 63.2230 64.3600 1,839,200
60.8200 61.2200 59.2500 61.1800 1,158,000
60.5800 62.0100 59.9000 61.1200 1,202,300
Weekend
Weekend
No trading
60.4100 63.3200 60.4100 61.0300 1,451,600
63.3500 64.8600 62.7000 62.9200 1,677,800
59.0500 63.0800 58.6500 62.7000 2,060,400
57.9700 59.3600 57.0100 57.6500 1,465,100
Weekend
Weekend
60.2900 61.4800 57.5800 57.7800 1,650,500
56.0200 61.6600 55.4050 60.7700 2,663,200
57.2850 62.8050 57.2850 60.7700 3,389,600
56.0300 56.8800 55.0100 56.2700 1,982,600
57.1600 58.6400 56.2400 56.6700 2,001,300
Weekend
Weekend
16 · 8-K After-hours · 16:05 ET 8-K ↗
56.7900 58.0000 54.8900 56.3300 6,217,200
55.8800 57.4400 55.5600 56.9600 1,910,300
56.9700 57.4900 55.4900 56.7100 2,648,300
57.5600 58.8800 57.0000 57.5700 1,710,800
56.0000 57.5600 55.7900 57.3700 1,864,800
Weekend
Weekend
55.8600 56.5700 54.0200 55.0500 4,477,200
57.5100 58.0000 54.5800 55.0100 3,769,900
58.8900 59.7500 56.8300 58.1000 2,894,700
60.0600 60.6100 57.6000 59.2000 2,174,500
59.1000 60.9700 57.0700 60.6700 2,260,700
Weekend
Weekend
61.6900 61.7900 57.3300 59.8200 2,820,300
63.8000 65.6350 63.5200 63.6000 2,556,900
65.0300 66.0450 62.9600 65.1000 1,877,400
62.3400 67.1500 62.3400 64.1000 1,990,400
61.5000 65.1900 61.2600 64.3300 2,010,400
Weekend
Weekend
63.0900 64.1400 62.4700 63.2700 1,873,400
61.8500 63.7100 60.8850 63.3900 2,420,900
63.6700 64.5300 61.0000 61.6150 1,900,600
63.4300 64.9200 62.5700 63.6700 2,522,400
62.9000 64.2000 62.3900 63.1400 1,820,700
Weekend
Weekend
63.7100 64.5900 62.0900 63.5900 2,749,800
63.9000 64.4300 62.0100 63.8600 2,023,800
63.3100 65.5900 63.1950 64.3800 1,642,600
63.2500 64.2200 62.3600 63.6900 1,663,500
No trading
Weekend
Weekend
61.1300 64.4800 60.9000 63.8200 1,990,800
61.7300 63.1300 61.1700 62.3800 2,413,300
64.6200 65.0000 60.3400 61.5500 4,104,100
62.6800 64.0000 61.9600 62.9200 2,294,800
64.6700 65.0920 61.4500 62.6400 5,837,600
Weekend
Weekend
65.5000 68.4400 63.4600 64.5200 24,090,400
15 · 10-Q After-hours · 16:06 ET 10-Q ↗ 14 · 8-K After-hours · 16:05 ET 8-K ↗
67.0000 69.5140 63.9400 64.6400 3,245,800
71.1350 71.8500 66.4500 68.0600 2,177,800
74.1500 76.1100 70.0000 72.1400 2,348,300
68.5100 73.4400 66.9100 73.0000 2,169,000
Weekend
Weekend
70.1500 72.0000 67.8350 69.3300 3,756,700
65.5800 69.8500 65.4500 69.1200 2,013,400
66.9100 67.5300 65.4750 65.5800 2,060,700
66.6500 68.8000 66.2900 66.9100 1,229,900
13 · DEFA14A Next filing day · accepted 26 Jan, 17:33 ET DEFA14A ↗ 12 · DEF 14A Next filing day · accepted 26 Jan, 17:32 ET DEF 14A ↗
66.5000 67.6900 65.6500 66.8200 1,620,300
Weekend
Weekend
69.2500 71.1600 66.8500 67.0500 1,930,400
68.9500 71.1400 68.1700 69.5900 2,672,600
65.7600 69.0000 65.2300 67.6000 1,548,000
62.0000 65.3300 61.6500 65.2800 1,415,400
No trading
Weekend
Weekend
66.4500 66.7320 63.6900 63.8400 1,567,800
66.1300 68.2400 65.8590 66.2500 1,537,600
65.2500 66.0400 64.7200 65.9100 1,852,700
66.1000 68.4400 65.4700 65.5450 2,585,500
11 · 8-K After-hours · 17:00 ET 8-K ↗
64.5700 66.6900 63.3300 65.9300 2,526,200
Weekend
Weekend
65.5000 67.0300 63.4500 64.5600 2,351,000
10 · 8-K Next filing day · accepted 08 Jan, 19:15 ET 8-K ↗ 9 · 424B5 Next filing day · accepted 08 Jan, 19:11 ET 424B5 ↗ 8 · 424B5 Next filing day · accepted 08 Jan, 19:00 ET 424B5 ↗
67.3200 69.4200 64.5500 65.0000 6,957,600
66.1300 67.3500 63.0000 65.6900 7,163,300
7 · 424B5 Next filing day · accepted 06 Jan, 20:15 ET 424B5 ↗ 6 · 424B5 Next filing day · accepted 06 Jan, 20:05 ET 424B5 ↗ 5 · 8-K After-hours · 16:05 ET 8-K ↗
72.0650 76.7600 69.1100 70.8100 8,165,300
68.2400 68.2950 60.6200 63.8800 2,693,600
Weekend
Weekend
66.3000 68.2450 65.0000 67.7900 1,161,300
No trading
66.5050 67.2550 66.0000 66.3900 1,066,300
69.6600 69.6600 65.9400 67.2500 1,334,500
69.3900 69.6900 68.0000 69.6200 896,700
Weekend
Weekend
70.0000 70.5630 69.0000 70.1600 807,400
No trading
68.4700 71.2970 68.0000 70.1100 678,000
69.0200 70.4900 68.4800 69.8300 1,158,400
68.0700 69.4700 67.6000 69.0000 1,017,600
Weekend
Weekend
66.5200 69.0000 65.7000 68.1600 5,184,500
65.6000 67.3000 64.2200 66.4700 1,994,300
65.9000 67.3000 63.0100 64.8000 2,215,100
68.0500 68.1500 59.5100 64.6600 3,775,900
69.5100 70.5100 68.1750 68.4500 1,874,100
Weekend
Weekend
70.8200 71.0000 68.0100 70.0900 1,555,200
68.8600 72.3600 68.1880 70.8200 2,829,000
4 · S-3ASR Next filing day · accepted 10 Dec, 21:54 ET S-3ASR ↗
68.0900 70.5000 65.9300 68.8700 4,294,300
65.6900 69.9900 65.4580 68.8300 5,713,600
67.0900 71.5000 65.4000 68.6000 5,070,900
Weekend
Weekend
62.9500 64.2780 60.2900 61.4400 3,588,000
64.4000 67.1400 64.1900 64.6600 3,060,200
58.6300 66.2300 58.6300 65.0750 4,441,900
55.9100 59.2700 55.7500 57.9500 2,867,400
52.3700 57.2700 52.2300 56.2500 3,323,900
Weekend
Weekend
56.3900 56.6700 52.0800 52.7000 2,540,700
No trading
47.3900 59.1500 45.0900 57.7100 7,066,500
3 · 10-K After-hours · 16:13 ET 10-K ↗ 2 · 8-K After-hours · 16:10 ET 8-K ↗
44.2600 46.9200 43.7200 46.7900 2,951,000
41.1000 44.8500 40.4300 44.2600 4,006,800
Weekend
Weekend
38.0100 40.5800 37.4300 40.4500 3,506,500
39.5100 39.9200 37.0600 38.0900 3,833,100
41.0600 41.2850 38.8950 38.9700 2,882,000
1 · 8-K After market open · 14:49 ET 8-K ↗
39.8000 43.5850 39.3000 40.4700 2,960,700
41.2800 41.5800 39.7500 40.1500 1,612,900
Weekend
Weekend
39.8500 41.7850 39.3300 41.2600 1,621,100
40.7200 41.5000 40.2100 41.1400 1,536,600
41.9600 43.1950 41.1400 41.4200 1,987,900
39.4500 41.5200 38.9300 41.5000 1,171,000
40.8500 42.0000 39.7700 39.8500 1,877,800
Weekend
Weekend
39.2300 39.3400 37.3500 39.2300 1,307,600
40.2700 40.9400 39.5000 39.6000 1,620,500
37.6300 40.5500 37.5600 40.3100 1,426,700
38.6000 39.3100 37.7700 37.8500 1,987,200
41.9900 43.2000 39.2770 39.6100 1,942,300
Weekend
Weekend
42.3200 43.6900 41.3100 42.3900 1,715,700
39.9200 43.3300 39.6990 42.3100 2,300,500
39.2600 40.7500 38.6500 40.2900 1,559,500
39.2300 40.4800 38.8400 39.5500 1,243,800
39.1000 40.1000 38.6300 39.4800 1,730,500
Weekend
Weekend
37.9600 38.3400 36.8800 38.0000 1,471,000

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.

21 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:03 ET Summarise
20 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:02 ET Summarise
19 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:02 ET Summarise
18 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
17 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:02 ET Summarise
16 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
15 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
14 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
13 DEFA14A DEFA14A (opens SEC filing in a new tab) Next filing day · accepted 26 Jan, 17:33 ET Summarise
12 DEF 14A DEF 14A (opens SEC filing in a new tab) Next filing day · accepted 26 Jan, 17:32 ET Summarise
11 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:00 ET Summarise
10 8-K 8-K (opens SEC filing in a new tab) Next filing day · accepted 08 Jan, 19:15 ET Summarise
9 424B5 424B5 (opens SEC filing in a new tab) Next filing day · accepted 08 Jan, 19:11 ET Summarise
8 424B5 424B5 (opens SEC filing in a new tab) Next filing day · accepted 08 Jan, 19:00 ET Summarise
7 424B5 424B5 (opens SEC filing in a new tab) Next filing day · accepted 06 Jan, 20:15 ET Summarise
6 424B5 424B5 (opens SEC filing in a new tab) Next filing day · accepted 06 Jan, 20:05 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
4 S-3ASR S-3ASR (opens SEC filing in a new tab) Next filing day · accepted 10 Dec, 21:54 ET Summarise
3 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:13 ET Summarise
2 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) After market open · 14:49 ET Summarise