Annexon, Inc ANNX

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Annexon, Inc. - common stock · Company · Nasdaq · Healthcare / Biotechnology

Paper trade (simulated — no real money)

Fill: USD 3.7500 · FX 1 USD = 1.277900 SGD · about SGD 4.7921 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 3.21 → 3.75 · 16.8%
6.9604.8202.680 1,2 3 4 5 6 7 8 9,10 11 12 13,14 15,16 17 18 19 20 21,22 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
3.7800 3.8300 3.6400 3.7500 2,575,383
3.8500 3.9700 3.7800 3.8100 3,664,900
3.8500 4.0700 3.8400 3.8600 4,948,100
4.0200 4.0590 3.7800 3.8300 6,370,000
3.6500 4.0300 3.4350 4.0100 6,353,200
Weekend
Weekend
3.6000 3.6100 3.3550 3.4100 5,240,000
3.7000 3.8200 3.5000 3.6000 2,653,800
3.7900 3.8500 3.6600 3.6700 4,042,900
3.9600 3.9600 3.7800 3.8300 3,420,500
4.0200 4.0550 3.9500 3.9600 1,926,800
Weekend
Weekend
3.9700 4.1350 3.9700 4.0200 2,385,000
3.9900 4.0350 3.8550 4.0000 3,213,900
3.9900 4.1750 3.9100 4.0100 2,449,800
4.2100 4.2600 4.0100 4.0300 2,701,300
4.2500 4.3100 4.0600 4.2000 3,447,900
Weekend
Weekend
4.2100 4.2650 4.1050 4.1900 4,019,500
4.1800 4.3800 4.1200 4.1200 3,919,100
4.1900 4.2700 4.0500 4.2300 4,409,400
4.0000 4.2370 3.9400 4.1300 3,706,500
3.8500 4.0800 3.7350 4.0100 5,072,600
Weekend
Weekend
3.8100 3.8500 3.6300 3.6400 3,511,300
3.8500 3.8700 3.7250 3.8000 2,022,400
4.1800 4.1900 3.8100 3.8700 2,421,000
4.2800 4.3400 4.1300 4.1800 2,000,200
4.2700 4.3580 4.1200 4.2200 4,183,400
Weekend
Weekend
4.1600 4.3100 4.1300 4.2300 4,940,200
3.9220 4.2200 3.9150 4.1700 3,119,700
3.9100 4.0000 3.8750 3.9300 4,513,900
3.9300 3.9750 3.7900 3.9200 2,960,600
3.9700 4.0350 3.8800 3.9500 2,896,000
Weekend
Weekend
4.1950 4.1950 3.9200 3.9400 3,935,100
4.3300 4.3300 4.0400 4.1400 4,204,100
4.6000 4.6600 4.3400 4.3700 5,528,400
4.7600 4.7850 4.6400 4.6700 2,139,500
No trading
Weekend
Weekend
4.8100 4.9050 4.7900 4.8700 1,227,500
4.9300 5.0400 4.7650 4.8400 2,313,300
4.9000 5.0750 4.7800 4.9300 1,842,200
4.9600 5.0000 4.8500 4.8900 1,472,300
4.9900 5.0400 4.8300 4.9400 2,436,800
Weekend
Weekend
5.1800 5.2050 4.9450 4.9700 1,618,600
5.0000 5.3200 4.9100 5.2500 3,022,700
5.1300 5.1750 4.9550 4.9900 2,276,000
5.1300 5.2250 5.0850 5.1500 2,941,800
5.0500 5.1300 4.8000 5.0600 3,374,200
Weekend
Weekend
5.2400 5.2750 5.0200 5.0700 1,428,500
5.4100 5.4650 5.1050 5.1800 1,669,700
5.4500 5.5900 5.3400 5.5000 3,504,300
5.0300 5.3080 5.0200 5.2800 2,244,300
5.2600 5.2900 5.0600 5.1300 3,625,100
Weekend
Weekend
5.2100 5.3450 5.0810 5.2900 2,990,200
5.3600 5.4000 5.1950 5.2600 3,122,800
22 · 10-Q After-hours · 16:00 ET 10-Q ↗
5.0600 5.4150 5.0000 5.3300 3,950,400
21 · 8-K Pre-market · 06:30 ET 8-K ↗
5.4000 5.4500 5.1650 5.3400 924,800
20 · 8-K After-hours · 16:35 ET 8-K ↗
5.3900 5.5050 5.2650 5.3900 1,960,200
Weekend
Weekend
5.6300 5.7000 5.3900 5.4100 2,045,900
5.3700 5.6000 5.3700 5.6000 3,049,300
19 · 8-K Pre-market · 08:17 ET 8-K ↗
5.4000 5.4300 5.2600 5.3700 1,770,800
5.3500 5.4800 5.2550 5.3300 2,561,900
5.0700 5.2700 4.8900 5.2500 2,691,800
Weekend
Weekend
5.3700 5.4000 5.0250 5.0950 2,800,700
18 · 8-K After-hours · 16:25 ET 8-K ↗
4.8800 5.2950 4.8300 5.2700 2,612,600
4.9700 5.0300 4.7600 4.8600 3,464,000
5.1200 5.2000 4.9000 4.9700 2,493,900
5.3000 5.4000 5.1300 5.1300 1,634,600
Weekend
Weekend
5.4300 5.6100 5.1550 5.2200 2,733,800
5.1200 5.3450 5.0600 5.3000 2,194,300
5.2800 5.3650 5.1500 5.2300 1,619,900
5.3950 5.6400 4.9600 5.3900 2,956,300
5.7800 5.9200 5.5400 5.5700 2,216,300
Weekend
Weekend
5.7500 6.1550 5.6800 5.8000 3,341,500
6.5000 6.5800 5.7800 5.8900 7,711,300
5.8680 6.5100 5.4750 6.5000 8,846,400
5.6700 5.7850 5.4100 5.5500 5,555,900
5.6900 5.8400 5.5000 5.6300 3,040,200
Weekend
Weekend
5.9000 5.9000 5.4900 5.8000 2,736,900
5.8800 6.0100 5.8350 5.9400 4,836,200
6.3500 6.5100 5.8350 5.9600 7,549,000
5.9900 6.4700 5.8300 6.4300 5,759,400
5.4300 6.0900 5.3900 5.9600 6,778,900
Weekend
Weekend
No trading
5.5800 5.6400 5.2750 5.4600 2,561,800
5.7100 6.0400 5.4350 5.5500 4,919,700
5.5700 5.7300 5.4700 5.7100 3,633,700
5.4800 5.6500 5.4200 5.5700 8,568,200
Weekend
Weekend
5.1700 5.5100 5.1600 5.4800 14,807,100
5.3500 5.5550 5.0500 5.1500 3,830,600
5.3000 5.6000 5.2500 5.3000 3,303,500
4.9900 5.3900 4.9450 5.2800 5,852,100
4.9900 5.1650 4.9350 5.0400 3,039,300
Weekend
Weekend
No trading
5.1000 5.2100 4.8150 4.9000 7,342,600
4.5400 4.9600 4.5400 4.9400 2,376,500
4.6400 4.7200 4.4600 4.5200 2,409,000
4.8000 4.9400 4.4700 4.6400 2,898,000
Weekend
Weekend
17 · 8-K After-hours · 16:16 ET 8-K ↗
4.7000 4.8300 4.5900 4.7100 3,196,000
4.7400 4.9100 4.6600 4.7000 1,673,900
5.1500 5.3000 4.6750 4.7200 2,627,000
5.1900 5.3400 5.0200 5.2000 3,194,900
5.3900 5.4600 5.1100 5.1200 3,315,500
Weekend
Weekend
5.4100 5.4700 5.2450 5.2900 1,762,600
5.3900 5.6900 5.3200 5.4500 3,229,800
5.2500 5.4400 5.2040 5.3900 2,921,900
5.4700 5.4700 5.2150 5.2600 2,105,100
5.9200 5.9200 5.3950 5.5800 4,731,700
Weekend
Weekend
5.3700 5.4800 5.2350 5.4200 2,176,800
5.3650 5.4950 5.2700 5.3700 2,720,200
5.5500 5.6400 5.3750 5.3900 1,930,800
5.4100 5.5350 5.2900 5.5200 4,503,900
No trading
Weekend
Weekend
5.4500 5.5650 5.2500 5.3100 2,180,200
4.9400 5.4600 4.8800 5.4400 3,012,100
4.9700 5.1000 4.9350 5.0400 1,808,600
4.9500 5.0000 4.8350 4.9100 2,576,200
5.2000 5.3500 4.9100 4.9600 3,279,900
Weekend
Weekend
5.2500 5.3700 5.0600 5.2100 1,850,600
5.4500 5.5250 5.3300 5.3700 1,587,700
5.4700 5.5850 5.3400 5.4500 2,253,600
5.6200 5.6200 5.4400 5.4400 1,189,700
5.7800 5.9250 5.5850 5.6800 2,275,100
Weekend
Weekend
5.6150 6.0250 5.5590 5.6900 2,011,700
16 · 10-Q After-hours · 16:12 ET 10-Q ↗ 15 · 8-K After-hours · 16:05 ET 8-K ↗
5.6800 5.7050 5.2800 5.5200 2,357,600
5.8000 5.8200 5.6500 5.7000 1,351,400
5.7800 5.8800 5.6350 5.7200 1,917,600
5.6800 5.9200 5.6200 5.6900 2,335,700
Weekend
Weekend
5.8500 5.9600 5.7250 5.7500 1,234,000
5.9300 6.0050 5.8300 5.8700 2,174,800
5.9800 6.0650 5.7810 5.8900 2,572,000
6.0300 6.2600 5.9500 6.0000 2,164,000
14 · DEFA14A After-hours · 16:07 ET DEFA14A ↗ 13 · DEF 14A After-hours · 16:06 ET DEF 14A ↗
5.8200 6.1700 5.8200 6.1000 3,090,500
Weekend
Weekend
6.0600 6.1100 5.8110 5.8800 1,393,800
6.1900 6.4200 6.0500 6.0600 2,087,300
6.3100 6.3200 6.1300 6.2600 1,848,100
6.3900 6.3900 6.1100 6.2000 1,695,200
6.4800 6.5300 6.2400 6.4300 1,429,200
Weekend
Weekend
6.4100 6.6150 6.3500 6.5400 3,001,000
12 · PRE 14A After-hours · 16:06 ET PRE 14A ↗
6.2700 6.3850 6.1000 6.3300 2,413,600
5.9300 6.4350 5.9100 6.3500 4,342,100
5.8600 5.9500 5.7500 5.8000 2,146,600
5.8700 6.0750 5.7850 5.8100 1,509,800
Weekend
Weekend
6.2000 6.2100 5.7200 5.8500 2,146,000
5.9900 6.2000 5.9900 6.1400 1,280,700
6.2400 6.3700 5.9850 6.0500 2,468,300
5.6900 6.0100 5.4600 5.9900 2,247,300
5.5000 5.9350 5.4600 5.8000 3,337,800
Weekend
Weekend
No trading
5.2550 5.6500 5.1300 5.5000 3,331,300
5.6800 5.9900 5.3500 5.3600 2,451,600
5.6400 6.1000 5.2350 5.5400 4,932,600
11 · S-3ASR Next filing day · accepted 30 Mar, 19:42 ET S-3ASR ↗ 10 · 10-K After-hours · 17:30 ET 10-K ↗ 9 · 8-K After-hours · 17:29 ET 8-K ↗
5.0100 5.1400 4.8550 4.9600 2,294,200
Weekend
Weekend
5.1900 5.3200 4.9950 5.0000 1,751,500
5.2300 5.3250 5.0100 5.2500 2,851,100
5.1200 5.5200 5.0900 5.3650 2,173,600
5.2500 5.3000 4.9500 5.0000 2,714,800
5.1100 5.4800 5.1100 5.3700 2,008,000
Weekend
Weekend
5.4500 5.6200 5.0600 5.1100 10,013,200
5.3900 5.6200 5.3000 5.4900 2,741,100
5.6300 5.6800 5.3800 5.4200 2,807,800
5.7100 5.7950 5.5650 5.6100 1,887,500
5.7600 5.9400 5.6250 5.7200 3,419,400
Weekend
Weekend
5.6200 5.8800 5.5800 5.6600 1,598,400
5.7700 5.9500 5.4250 5.4400 2,463,200
6.0800 6.2900 5.8800 6.0300 1,338,900
5.6700 6.2000 5.6700 6.0800 2,222,300
5.0200 5.6300 5.0200 5.5900 2,107,200
Weekend
Weekend
5.2600 5.3800 5.0100 5.1600 1,792,700
5.4800 5.5950 5.3650 5.4300 3,159,100
5.4600 5.6400 5.3700 5.5900 3,264,000
5.2900 5.5350 5.1200 5.4300 6,163,900
5.5700 5.7300 5.3200 5.5200 3,068,800
Weekend
Weekend
5.3100 5.6350 5.2500 5.6000 4,704,200
5.1150 5.4300 4.9600 5.3800 4,159,200
5.0250 5.2050 4.9700 5.0900 2,837,200
4.9300 5.0600 4.8910 4.9600 2,674,700
4.8900 5.0750 4.7800 4.8900 1,597,700
Weekend
Weekend
5.0500 5.1050 4.8550 4.9000 1,749,100
5.1500 5.1900 5.0000 5.1000 1,406,300
4.9800 5.1800 4.9250 5.0600 1,858,200
8 · 8-K After-hours · 16:16 ET 8-K ↗
4.8900 5.1100 4.7900 5.0400 2,090,000
No trading
Weekend
Weekend
5.2200 5.3700 4.8700 4.8900 1,904,000
5.2500 5.4350 5.1300 5.1900 2,216,000
5.6600 5.7500 5.0900 5.2400 2,489,000
5.7000 5.7900 5.5700 5.6100 3,347,400
5.7100 5.7100 5.4600 5.6300 1,716,500
Weekend
Weekend
5.7900 5.8550 5.5800 5.7300 2,060,600
5.9300 6.2100 5.4300 5.6300 2,384,600
6.4200 6.5200 5.9000 6.0400 1,884,600
6.3600 6.5900 6.3000 6.4800 1,435,500
6.1300 6.5500 6.1000 6.3800 1,571,800
Weekend
Weekend
6.6500 6.8400 6.1550 6.2400 1,840,900
6.4100 6.5500 6.3000 6.5200 1,287,900
6.6300 6.6300 6.2600 6.2900 3,741,700
6.6600 6.8200 6.4850 6.5700 2,449,800
6.7000 6.7450 6.4200 6.6600 1,714,400
Weekend
Weekend
6.9800 7.1800 6.7550 6.7800 2,337,100
6.8700 7.0600 6.8550 6.9600 2,780,300
6.1700 6.8750 6.1700 6.8500 2,997,400
6.0600 6.1900 5.8500 6.1600 1,949,800
No trading
Weekend
Weekend
6.2000 6.2800 6.0500 6.0700 1,616,900
6.6900 6.7550 6.1500 6.1600 2,970,200
7 · 8-K After-hours · 16:05 ET 8-K ↗
6.2000 6.8300 6.0000 6.6800 4,643,900
5.5300 6.3000 5.4960 6.1900 2,793,900
5.2500 5.5700 5.1200 5.5600 1,816,400
6 · 8-K Pre-market · 07:05 ET 8-K ↗
Weekend
Weekend
5.3800 5.5400 5.2200 5.2500 1,870,700
5.5200 5.5400 5.2550 5.2900 2,428,700
5.1000 5.7300 5.1000 5.5300 3,142,200
5.1700 5.1700 4.9500 5.1000 3,203,700
4.7400 5.2300 4.5450 5.2200 5,408,500
Weekend
Weekend
5.1000 5.1600 4.6500 4.6900 2,102,600
No trading
5.0400 5.1150 4.9500 5.0200 2,107,900
5.0200 5.1800 4.9500 5.0400 1,934,700
5.0400 5.1800 4.9900 5.0000 1,355,700
Weekend
Weekend
5.1600 5.2700 4.9400 5.1100 1,670,300
No trading
5.1500 5.2870 5.1100 5.1800 955,900
5.3200 5.3200 5.0400 5.1100 2,169,800
5.1800 5.4800 5.1100 5.1900 2,402,000
Weekend
Weekend
4.8600 5.4150 4.8500 5.1700 10,460,500
4.9900 5.1100 4.8050 4.8200 2,705,200
4.8200 4.9750 4.8050 4.9000 1,810,400
4.9100 5.0100 4.7500 4.8000 2,618,700
4.9900 5.0700 4.7950 4.9100 3,344,200
Weekend
Weekend
5.0300 5.3400 4.9500 4.9700 5,562,700
4.9100 5.1250 4.8850 5.0400 3,393,100
4.8500 5.0000 4.8400 4.9000 1,666,800
4.8700 4.9800 4.7850 4.8600 2,275,000
4.7200 5.0000 4.7100 4.8600 2,433,500
Weekend
Weekend
4.4800 4.7400 4.4800 4.6100 1,944,300
4.4450 4.5450 4.2500 4.4900 2,488,900
4.1000 4.3100 4.0800 4.2800 1,777,200
4.2600 4.4400 4.0100 4.0600 4,167,300
4.4200 4.5000 4.0700 4.1300 2,248,200
Weekend
Weekend
4.3600 4.6400 4.3500 4.5000 1,764,000
No trading
4.4100 4.4450 4.2620 4.3200 3,045,700
4.5300 4.6000 4.3250 4.4400 2,852,700
4.4500 4.7000 4.3680 4.5100 3,844,200
Weekend
Weekend
4.2900 4.4150 4.1650 4.2700 3,979,100
4.4000 5.0700 4.2450 4.2700 8,299,900
3.5800 4.2000 3.5000 4.0600 10,650,500
3.0200 3.2880 2.9900 3.2000 2,952,000
2.6900 3.1150 2.6700 3.0200 3,647,800
Weekend
Weekend
5 · 8-K After-hours · 16:41 ET 8-K ↗
2.6800 2.8950 2.6500 2.7100 3,507,800
4 · 424B5 After-hours · 16:52 ET 424B5 ↗
2.5700 2.8300 2.5400 2.6800 3,853,200
3 · 424B5 After-hours · 16:20 ET 424B5 ↗
2.9600 2.9700 2.7400 2.8400 1,922,300
2.9500 3.0300 2.8600 2.9700 935,500
2 · 10-Q After-hours · 16:10 ET 10-Q ↗ 1 · 8-K After-hours · 16:08 ET 8-K ↗
2.9200 3.0060 2.9000 2.9800 837,400
Weekend
Weekend
2.9800 2.9800 2.6550 2.8800 1,639,100
3.0800 3.1170 2.9200 3.0200 1,052,400
3.0800 3.1500 2.9800 3.0100 1,421,200
3.0500 3.1600 3.0160 3.0800 1,884,200
3.2000 3.3700 3.0900 3.1700 2,370,800
Weekend
Weekend
2.9300 3.2350 2.8900 3.1600 3,738,100
3.1600 3.2000 2.9100 2.9300 1,726,100
3.4500 3.5000 3.1650 3.1900 2,946,600
3.5200 3.6000 3.4300 3.4500 1,716,700
3.2600 3.5500 3.2600 3.5400 1,970,100
Weekend
Weekend
3.0600 3.3400 3.0600 3.2100 3,194,600

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.

22 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:00 ET Summarise
21 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:30 ET Summarise
20 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:35 ET Summarise
19 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:17 ET Summarise
18 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:25 ET Summarise
17 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:16 ET Summarise
16 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:12 ET Summarise
15 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
14 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:07 ET Summarise
13 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
12 PRE 14A PRE 14A (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
11 S-3ASR S-3ASR (opens SEC filing in a new tab) Next filing day · accepted 30 Mar, 19:42 ET Summarise
10 10-K 10-K (opens SEC filing in a new tab) After-hours · 17:30 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:29 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:16 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:41 ET Summarise
4 424B5 424B5 (opens SEC filing in a new tab) After-hours · 16:52 ET Summarise
3 424B5 424B5 (opens SEC filing in a new tab) After-hours · 16:20 ET Summarise
2 10-Q 10-Q (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-hours · 16:08 ET Summarise