Alkermes plc ALKS

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Alkermes plc - Ordinary Shares · Company · Nasdaq · Healthcare / Drug Manufacturers - Specialty & Generic

Paper trade (simulated — no real money)

Fill: USD 43.6300 · FX 1 USD = 1.277900 SGD · about SGD 55.7548 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 29.80 → 43.63 · 46.4%
55.22041.21027.200 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 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
44.1500 44.1500 43.1500 43.6300 884,392
44.0000 44.6900 43.0000 44.1800 1,834,000
44.1200 44.5800 43.4400 43.4800 1,808,300
43.3800 45.2000 43.2100 44.1100 2,201,600
41.4600 43.6400 41.3500 42.9700 2,792,900
Weekend
Weekend
40.1800 41.5700 39.7100 41.2200 3,407,600
39.7400 40.7400 39.4200 40.1000 1,976,600
39.5900 40.6500 38.9800 39.0800 1,551,200
40.2600 40.3500 39.6700 39.7300 1,068,300
40.6700 40.8700 40.0000 40.2600 2,240,200
Weekend
Weekend
40.1800 40.8700 39.9900 40.6100 1,627,000
41.1000 41.2600 39.1100 40.1100 3,251,000
41.2800 42.0600 41.1700 41.4500 1,816,000
42.6400 42.7100 41.2400 41.6500 1,546,000
42.0700 43.2200 41.6700 42.7600 3,125,200
Weekend
Weekend
41.0300 41.9600 40.3200 41.7500 2,423,500
40.0000 41.4100 39.9900 40.5400 2,625,700
40.9400 40.9400 39.9200 40.5200 2,527,200
39.8400 40.9000 39.8400 40.8000 2,686,800
40.7100 40.9700 40.0400 40.1500 2,356,200
Weekend
Weekend
40.9400 41.1200 40.4900 40.8500 2,588,000
42.5500 42.5500 40.5900 40.7900 2,843,400
43.2000 43.6200 41.2300 42.1300 2,475,700
44.3900 44.5300 43.0800 43.2900 2,310,700
44.2700 44.7900 43.1100 44.1800 3,731,100
27 · 8-K Pre-market · 07:10 ET 8-K ↗
Weekend
Weekend
46.5100 46.5300 43.2700 43.3900 6,935,800
47.1000 47.4000 46.4100 46.7100 1,423,600
46.6400 47.2600 45.7900 46.0700 1,854,600
26 · 8-K Pre-market · 09:12 ET FORM 8-K ↗
45.7300 46.1400 44.6300 46.0300 2,151,200
46.6000 46.6000 45.6600 45.8300 2,029,500
Weekend
Weekend
46.7500 46.7500 45.7300 45.9700 1,283,100
44.9800 46.1100 44.7500 46.1100 1,193,900
45.2400 45.6100 44.7200 45.4000 1,442,800
45.2000 46.5300 44.6300 45.4900 1,355,800
No trading
Weekend
Weekend
46.1400 46.9300 45.8000 46.1000 1,064,000
48.0100 48.2900 46.7100 46.8800 974,500
47.7000 48.7400 46.6800 47.7200 1,566,400
47.0000 47.3400 46.6500 47.2000 1,351,300
47.2500 47.5600 46.4600 46.9900 1,440,900
Weekend
Weekend
48.8200 48.8200 47.2500 47.4100 1,429,200
48.7200 49.3300 48.1000 48.9000 2,119,400
49.2300 49.3500 48.4600 49.1600 660,900
48.9400 49.5800 48.8700 49.2100 1,127,400
48.0500 49.0300 47.6400 48.8700 1,296,500
Weekend
Weekend
48.0500 48.6700 47.3300 48.3300 939,600
49.3700 49.8600 47.9300 48.0200 1,635,200
51.2600 51.2900 50.0800 50.1800 1,544,200
50.1000 50.4200 49.4600 49.4800 970,900
48.9000 50.0800 48.6200 49.8500 763,800
Weekend
Weekend
49.3700 50.0200 48.6500 49.0600 1,267,800
51.6600 51.6600 49.2100 49.4500 1,546,600
49.2200 50.5300 48.5000 50.2800 1,315,600
25 · 8-K Pre-market · 09:26 ET 8-K ↗
49.9200 50.1400 48.9700 49.2100 1,373,600
48.3900 49.8100 48.3900 49.4000 1,511,300
Weekend
Weekend
49.0500 49.9000 48.6700 49.1700 1,111,000
49.6100 50.4000 48.2100 48.3700 1,569,100
50.2000 50.8500 49.2300 49.6100 1,706,800
49.7300 50.3600 49.0000 49.6700 1,430,800
24 · 8-K/A After-hours · 16:08 ET 8-K/A ↗
48.5800 50.7100 48.1900 49.5300 1,835,700
Weekend
Weekend
49.6300 49.8300 48.5200 48.9900 1,624,500
47.8500 50.3400 47.7100 50.0300 2,303,300
50.5000 50.7200 47.6600 48.3400 4,149,600
50.4300 52.5100 49.3300 50.5000 2,875,900
23 · 10-Q Pre-market · 09:22 ET 10-Q ↗ 22 · 8-K Pre-market · 07:05 ET 8-K ↗
52.8700 53.8500 52.4800 52.7300 1,402,700
Weekend
Weekend
53.3800 53.8800 52.4800 52.8900 1,288,500
52.1300 53.5400 51.6900 52.9700 1,488,300
52.5500 53.2700 52.3500 52.5800 1,837,100
51.5800 53.0400 51.2500 52.8500 1,179,200
52.9600 53.2400 51.7000 51.7200 941,800
Weekend
Weekend
51.0600 52.7900 50.9400 52.7200 1,713,700
51.7700 53.5200 51.5500 51.9400 1,843,700
51.6400 52.2000 50.4900 51.9800 1,556,300
51.9800 52.1700 50.6600 51.6000 1,776,600
51.0700 52.0000 50.5400 51.8700 1,583,800
Weekend
Weekend
53.3600 53.3800 51.8600 51.9400 1,691,400
54.4600 54.9000 53.3600 53.7800 1,630,500
54.3700 54.6900 53.6800 54.2900 1,706,000
21 · 8-K Pre-market · 08:00 ET 8-K ↗
55.3700 55.6700 53.6300 55.2200 1,719,300
54.0300 55.3700 53.4100 55.1400 1,747,200
Weekend
Weekend
No trading
52.5000 54.6900 51.7200 54.5800 1,653,700
52.3300 52.7000 50.9600 51.7200 1,638,400
52.7800 53.3500 51.8500 52.4000 2,958,500
53.9400 54.4500 52.2300 52.5300 2,940,700
Weekend
Weekend
52.8700 55.2800 52.3900 55.0800 7,563,400
50.7000 53.6900 50.0100 52.8300 3,249,300
48.9400 51.7300 48.8800 50.4500 3,726,600
46.0000 48.3200 45.4700 48.0700 2,451,700
45.4000 46.6300 45.0100 46.0200 3,227,500
Weekend
Weekend
No trading
45.2500 45.7600 43.9800 44.9900 7,751,300
44.1900 45.4100 44.0300 44.5100 1,417,800
44.5800 44.7600 43.4300 44.0900 1,420,900
43.8700 44.4100 43.3400 44.3600 1,822,100
20 · 8-K Pre-market · 07:09 ET 8-K ↗
Weekend
Weekend
45.1000 45.7100 44.2200 44.2800 1,523,000
44.0900 45.7600 44.0200 44.9200 2,261,100
44.3700 45.3800 43.7900 43.8400 1,659,600
43.3500 44.9300 43.0300 44.2900 2,533,300
42.7700 43.7800 42.1900 42.4500 1,292,000
Weekend
Weekend
43.3800 43.6900 42.5500 42.8000 1,312,000
43.0500 44.5700 43.0500 43.3800 2,307,200
41.3200 42.8700 40.6200 42.7600 2,000,500
41.6100 41.9400 40.8300 41.3200 2,146,000
42.1900 42.8100 41.3700 42.2700 2,406,100
Weekend
Weekend
40.0000 42.8300 39.6400 42.1900 4,269,400
38.0000 40.7900 37.8000 39.9400 2,913,200
37.2600 38.1200 37.2600 38.0900 2,246,900
36.8000 37.5000 36.4900 37.3500 1,122,900
No trading
Weekend
Weekend
36.9100 37.2600 36.5800 36.8000 907,800
36.6400 37.5000 36.2500 36.9500 1,692,600
19 · 8-K After-hours · 16:10 ET 8-K ↗
37.2100 37.9400 36.8800 36.9800 1,817,900
37.0600 37.3500 36.3100 37.0000 2,154,200
38.0200 38.0200 36.9800 37.1900 1,571,900
Weekend
Weekend
38.2500 38.5800 37.3600 37.4800 1,315,700
38.8500 39.1200 38.2100 38.3600 1,740,000
18 · DEFA14A After-hours · 17:03 ET DEFA14A ↗
38.5000 39.5600 38.0100 38.9100 3,250,700
36.0000 38.4600 35.5100 38.2900 4,026,500
17 · 8-K Pre-market · 07:07 ET 8-K ↗
35.2200 35.9000 35.2100 35.4700 2,323,500
Weekend
Weekend
35.7700 35.9300 34.8700 34.9900 2,616,400
35.3200 36.3200 35.2500 35.4000 2,094,200
36.3100 36.6000 34.9300 35.3200 2,960,700
16 · 10-Q After-hours · 16:30 ET 10-Q ↗
35.2500 36.5600 34.0700 36.2500 2,614,300
15 · 8-K Pre-market · 07:05 ET 8-K ↗
33.2000 34.4900 33.2000 34.1700 2,860,300
Weekend
Weekend
14 · 8-K/A After-hours · 16:51 ET 8-K/A ↗
33.4200 33.9000 33.1200 33.3800 1,193,200
33.8900 34.4000 33.5800 33.7100 1,652,300
33.7600 34.3000 33.5000 33.7100 2,732,100
33.9800 34.4500 33.7200 34.1400 1,734,800
33.3100 34.2900 32.8400 33.7300 1,746,000
Weekend
Weekend
34.0300 34.3300 33.3000 33.3100 912,300
33.7400 34.1600 33.6500 33.9100 1,109,400
33.5200 33.8000 33.2200 33.7400 1,350,000
34.4300 34.4300 33.4600 33.5200 1,259,400
34.4900 34.8700 34.1200 34.2300 1,124,400
Weekend
Weekend
34.5200 34.7200 34.1100 34.5300 2,228,900
33.0600 34.0000 33.0600 33.7700 1,602,000
33.9200 34.2600 32.9600 33.2200 1,640,400
33.7300 34.2300 33.6400 33.8700 1,837,500
32.7800 33.8000 32.7600 33.7500 2,182,800
Weekend
Weekend
35.1900 35.5200 33.3400 33.3600 2,036,600
35.0000 35.4500 34.4400 34.9200 2,049,900
33.7400 34.7900 33.6800 34.7700 3,228,900
33.8600 33.9600 32.4700 33.0200 2,140,400
13 · DEFA14A After-hours · 17:11 ET DEFA14A ↗ 12 · DEF 14A After-hours · 17:04 ET DEF 14A ↗
34.5700 34.9900 33.9300 34.0800 2,022,200
Weekend
Weekend
No trading
34.5800 35.3200 34.3100 34.8400 2,485,600
35.8100 36.4800 34.2100 35.0500 4,768,200
32.9600 36.2200 32.5400 35.3600 12,031,500
29.3900 30.3900 29.1500 30.1500 2,518,900
Weekend
Weekend
11 · PRE 14A After-hours · 17:21 ET PRE 14A ↗
29.9000 30.0500 29.2000 29.3900 2,073,100
29.1600 30.1700 29.0700 29.9200 3,419,100
28.7000 29.6900 28.6600 29.3700 1,383,100
27.3900 28.5300 27.3100 28.4000 2,999,200
28.4800 28.7400 27.6600 27.7100 2,320,700
Weekend
Weekend
28.4200 28.8900 27.9400 28.1500 4,918,300
27.0000 28.4900 27.0000 28.4000 2,977,700
27.4100 27.5200 27.0000 27.2000 1,632,200
28.2000 28.5100 27.6500 27.6500 1,314,900
27.9600 28.1300 27.5400 28.0000 1,640,500
Weekend
Weekend
27.8800 28.3400 27.4100 27.7600 2,896,700
27.4300 28.0200 27.0300 27.6400 2,597,600
27.5800 27.7900 27.2000 27.7700 1,637,700
28.4600 28.5600 27.6600 27.7400 2,471,500
28.5100 28.8900 27.9600 28.4500 2,027,200
Weekend
Weekend
27.9100 28.7500 27.4200 28.6300 1,924,200
29.0000 29.1800 28.1700 28.3500 2,233,600
29.2800 29.5200 28.8600 29.2800 1,807,800
29.7600 30.3400 28.9100 29.2000 2,708,600
29.2900 30.3500 29.1100 30.2500 2,047,300
Weekend
Weekend
30.3500 30.4900 29.9100 30.1000 2,489,800
31.0600 31.4400 29.8100 30.7300 2,871,800
10 · 8-K After market open · 09:31 ET 8-K ↗ 9 · 10-K After market open · 09:31 ET 10-K ↗
32.5000 32.7800 30.5400 31.0400 3,899,400
8 · 8-K Pre-market · 07:05 ET 8-K ↗
32.9100 33.8800 32.5500 33.3900 2,161,300
31.6400 32.3500 31.4800 32.1900 1,943,700
Weekend
Weekend
31.8000 31.9900 31.4000 31.9100 1,823,700
31.8400 32.3300 31.7700 32.0000 1,650,200
32.8700 33.0300 31.8700 32.0200 1,568,500
32.8100 33.7400 32.6000 32.9000 1,582,000
No trading
Weekend
Weekend
33.5200 34.2700 33.0900 33.1600 989,100
33.3300 34.2200 33.0400 33.2900 1,838,500
7 · 8-K Pre-market · 07:37 ET 8-K ↗
34.8900 35.1500 33.9100 34.9100 1,352,700
34.9300 35.3400 34.6600 34.7200 1,520,300
34.6200 34.8900 34.3600 34.8400 1,415,800
Weekend
Weekend
34.3800 35.0200 34.1100 34.9100 1,938,900
34.1000 34.7300 33.3500 33.5500 1,572,400
34.5600 34.9300 34.0300 34.1300 1,467,400
34.6400 35.1200 34.2600 34.4700 1,492,300
33.5400 35.3000 33.4300 34.9600 1,826,100
Weekend
Weekend
34.5800 34.9600 33.7500 33.8900 2,388,400
34.1200 35.2900 34.0000 34.8800 2,817,300
33.9200 34.4000 33.5500 33.9000 1,727,800
33.1100 33.5800 32.4900 33.5200 1,557,700
33.3800 33.9900 32.7800 33.1100 2,462,300
Weekend
Weekend
33.9500 34.2700 33.1700 33.6100 3,010,200
33.8500 34.6700 33.5100 33.9500 2,755,500
31.7900 33.9600 31.7800 33.8500 3,269,200
31.4200 32.1000 31.0900 31.7500 2,167,000
No trading
Weekend
Weekend
31.3800 31.8700 31.1500 31.6300 2,418,300
30.5100 31.9600 30.4600 31.2200 2,897,300
29.2600 30.7700 29.1600 30.6200 1,860,800
29.5300 29.7500 28.9300 29.1500 2,082,300
29.5800 29.9200 29.0000 29.6200 1,675,500
6 · 8-K Pre-market · 08:00 ET 8-K ↗
Weekend
Weekend
29.7300 30.4700 29.5800 29.6600 2,820,800
29.0600 30.0800 29.0600 29.6000 2,311,400
29.0000 29.7800 28.9500 29.3600 2,299,600
28.0100 28.9200 27.5000 28.7800 2,033,000
5 · 8-K Pre-market · 07:06 ET 8-K ↗
28.0900 28.3200 27.7000 28.0000 1,627,000
Weekend
Weekend
28.0100 28.6300 27.5600 28.2600 1,323,300
No trading
27.9500 28.1700 27.6800 27.9800 1,206,600
27.8600 28.1500 27.6600 27.8100 1,230,900
28.6100 28.6100 27.8500 28.0100 923,300
Weekend
Weekend
28.4100 28.5300 28.3200 28.4900 760,100
No trading
28.4600 28.7500 28.3900 28.5200 962,400
28.6700 28.8700 28.4300 28.4900 957,600
28.3800 28.9800 28.0200 28.6300 1,366,000
Weekend
Weekend
27.9100 28.6500 27.8200 28.4500 4,281,500
28.2300 28.5000 27.6900 27.8100 1,502,200
28.2200 28.5300 27.8500 28.0400 1,929,900
28.1000 28.2700 27.5300 28.0600 1,696,500
28.7200 28.7900 28.0000 28.1700 1,992,000
Weekend
Weekend
29.2600 29.3500 28.4200 28.5000 1,620,200
28.7300 29.3400 28.5600 29.1700 1,567,400
28.5200 28.7700 27.8100 28.6200 2,209,100
29.4100 29.6800 28.4200 28.4400 2,089,000
29.5500 29.8000 29.1200 29.4100 1,709,000
Weekend
Weekend
29.1600 29.5900 28.9700 29.5200 1,810,100
29.5300 29.6600 28.9600 29.3000 1,376,100
29.2100 30.1000 28.9700 29.5300 1,454,400
29.2700 29.4900 28.5200 28.9700 1,837,800
29.3000 29.4700 28.8500 28.9000 1,539,800
Weekend
Weekend
29.8500 30.2300 29.2400 29.5800 1,120,400
No trading
28.9300 30.0500 28.6700 29.7200 2,530,300
28.3800 29.0600 28.1900 28.9900 1,601,900
28.5500 28.6300 27.9000 28.2000 2,490,200
Weekend
Weekend
28.1000 28.8700 28.0600 28.6100 2,039,000
28.8600 29.2400 28.1200 28.1900 1,433,100
29.0200 29.2800 28.5000 28.6900 1,725,400
4 · 8-K Pre-market · 06:28 ET 8-K ↗
29.5700 29.8600 28.8400 29.2600 3,103,500
29.3600 30.2700 29.1200 29.3300 2,869,200
Weekend
Weekend
30.2200 30.3700 28.6700 29.0400 5,749,500
30.6000 31.7400 30.6000 31.0100 3,354,200
27.9700 31.6300 27.4900 31.4100 8,561,600
3 · 8-K Pre-market · 08:45 ET 8-K ↗
33.0800 34.4600 32.5100 33.8100 1,888,000
32.8900 33.4700 32.2300 32.6500 1,748,700
Weekend
Weekend
31.8900 32.9500 31.4100 32.8900 1,990,400
31.0300 32.4900 30.6600 31.6800 2,124,200
32.0100 36.3200 31.0000 31.0700 6,993,100
30.0000 30.6300 29.7700 30.3900 2,317,200
30.3400 30.6900 29.7000 30.1700 2,452,700
Weekend
Weekend
30.7000 31.0000 30.3500 30.7000 2,020,600
31.2900 32.1300 30.7300 30.8200 2,269,000
31.0000 31.9000 30.6600 31.4500 2,348,000
30.2500 31.4800 28.4100 31.0000 4,965,600
2 · 10-Q Pre-market · 09:20 ET 10-Q ↗ 1 · 8-K Pre-market · 07:05 ET 8-K ↗
30.0500 30.4000 29.4500 29.7200 2,928,200
Weekend
Weekend
30.3000 30.5100 29.5300 29.8000 2,079,700

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.

27 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:10 ET Summarise
26 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 09:12 ET Summarise
25 8-K 8-K (opens SEC filing in a new tab) Pre-market · 09:26 ET Summarise
24 8-K/A 8-K/A (opens SEC filing in a new tab) After-hours · 16:08 ET Summarise
23 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 09:22 ET Summarise
22 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
21 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:00 ET Summarise
20 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:09 ET Summarise
19 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
18 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 17:03 ET Summarise
17 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:07 ET Summarise
16 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
15 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
14 8-K/A 8-K/A (opens SEC filing in a new tab) After-hours · 16:51 ET Summarise
13 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 17:11 ET Summarise
12 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 17:04 ET Summarise
11 PRE 14A PRE 14A (opens SEC filing in a new tab) After-hours · 17:21 ET Summarise
10 8-K 8-K (opens SEC filing in a new tab) After market open · 09:31 ET Summarise
9 10-K 10-K (opens SEC filing in a new tab) After market open · 09:31 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:37 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:00 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:06 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:28 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:45 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 09:20 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise