Alkermes plc ALKS

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Alkermes plc - Ordinary Shares · Company · Nasdaq

Paper trade (simulated — no real money)

Fill: USD 52.8900 · FX 1 USD = 1.290100 SGD · about SGD 68.2334 per unit

Sign in to place simulated trades. 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 26.15 → 52.89 · 102.3%
55.22040.68526.150 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 Jul 25Oct 25Jan 26Apr 26Jul 26

Numbered dotted lines mark the filtered filings under Announcement Events below.

Price & SEC Filing History 26 Jul 2025 — 27 Jul 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.

No data yet
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
27 · 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
26 · 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
25 · 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
24 · 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
23 · 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
22 · 10-Q After-hours · 16:30 ET 10-Q ↗
35.2500 36.5600 34.0700 36.2500 2,614,300
21 · 8-K Pre-market · 07:05 ET 8-K ↗
33.2000 34.4900 33.2000 34.1700 2,860,300
Weekend
Weekend
20 · 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
19 · DEFA14A After-hours · 17:11 ET DEFA14A ↗ 18 · 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
17 · 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
16 · 8-K After market open · 09:31 ET 8-K ↗ 15 · 10-K After market open · 09:31 ET 10-K ↗
32.5000 32.7800 30.5400 31.0400 3,899,400
14 · 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
13 · 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
12 · 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
11 · 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
10 · 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
9 · 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
8 · 10-Q Pre-market · 09:20 ET 10-Q ↗ 7 · 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
31.2200 31.2200 29.9300 30.0400 4,317,100
30.0000 32.0200 29.9300 31.0900 4,325,800
6 · 8-K Pre-market · 09:09 ET 8-K ↗
30.9800 31.9100 30.7800 31.4500 1,633,300
30.5200 31.2700 30.0700 30.9800 1,649,000
Weekend
Weekend
30.6800 31.1800 30.0000 30.2600 2,042,400
32.1100 32.2900 30.4000 30.8000 2,284,600
31.5100 32.4000 31.4200 32.2300 1,315,900
32.0000 32.2100 31.5900 31.9400 2,977,600
31.3900 32.3100 31.2500 32.1700 1,691,700
Weekend
Weekend
31.3800 31.5200 30.7700 31.2100 2,759,200
31.6300 32.0200 31.2900 31.3800 1,562,700
31.1500 31.8200 30.8100 31.5100 1,084,300
31.0900 31.1000 30.7000 30.9500 1,054,700
30.8700 31.3000 30.7400 30.9900 1,619,200
Weekend
Weekend
31.1700 31.6800 30.9800 31.0600 1,687,500
30.5300 31.3200 30.5000 31.2600 1,593,900
30.0700 30.7400 29.8500 30.6500 1,592,400
28.9500 30.1700 28.9500 30.0000 2,299,100
27.7400 29.1400 27.6000 29.0400 2,745,800
Weekend
Weekend
28.2000 28.5500 27.5700 27.8900 2,340,100
27.7900 27.7900 26.9900 27.1300 1,086,500
27.7400 28.2500 27.5600 27.8100 1,120,300
27.4900 28.0300 27.4700 27.7500 1,740,300
27.8700 28.1600 27.5200 27.6300 2,002,600
Weekend
Weekend
28.3600 28.4500 27.7000 27.7900 3,309,700
28.1800 28.6400 28.0000 28.5500 1,368,700
27.5200 28.2800 27.3800 27.8700 2,246,100
26.5000 27.4500 26.5000 27.3900 2,141,600
26.9100 26.9300 26.4000 26.5200 1,960,300
Weekend
Weekend
5 · 8-K After-hours · 16:50 ET 8-K ↗
27.4400 27.6800 26.9300 26.9700 2,480,900
4 · 8-K Pre-market · 09:09 ET 8-K ↗
27.0500 27.7500 27.0200 27.7100 1,655,500
27.9100 28.0000 26.7000 26.9300 2,651,000
28.5600 28.6500 27.6300 27.8500 3,692,400
28.3000 28.5600 25.1700 28.4500 5,511,400
3 · 8-K Pre-market · 09:15 ET 8-K ↗
Weekend
Weekend
28.8900 30.2400 28.7000 29.9400 2,502,200
29.8800 29.8900 28.7700 28.9200 1,974,900
29.8600 31.6900 29.6600 30.0000 3,091,800
29.1100 29.7500 29.0900 29.4000 1,365,600
No trading
Weekend
Weekend
28.9800 29.4500 28.9000 28.9700 1,426,700
29.1300 29.2400 28.7700 28.9300 1,174,900
28.9600 29.3900 28.8400 29.2500 1,235,600
28.9500 29.2500 28.6400 28.9800 1,235,600
29.7300 29.7300 28.9100 29.0000 1,125,100
Weekend
Weekend
29.2600 29.9600 29.1400 29.7500 1,386,800
28.7800 29.2800 28.6000 29.0600 848,300
28.9800 29.1000 28.7300 28.9700 810,300
28.1700 28.9000 28.1100 28.8500 2,332,700
28.9400 29.0500 28.1000 28.1200 1,658,300
Weekend
Weekend
28.4900 29.1200 28.3800 29.0500 1,590,900
28.2800 28.6100 28.1700 28.2600 1,007,700
27.6400 28.7300 27.5100 28.6300 1,312,400
26.7000 27.5000 26.6000 27.4300 1,019,200
26.6700 26.9200 26.4800 26.5400 1,156,900
Weekend
Weekend
26.6200 26.8700 26.4800 26.7100 1,371,400
26.5500 26.7200 26.0700 26.6000 1,085,700
26.4100 26.6500 26.1000 26.5500 1,117,900
26.5900 26.8700 26.2000 26.6000 1,829,100
26.5800 26.7900 26.1500 26.6400 1,281,300
Weekend
Weekend
26.4200 26.6800 26.3000 26.5500 1,587,000
27.4900 27.6300 26.3500 26.4900 2,234,800
27.4000 28.6700 26.5600 27.9300 5,149,800
27.5000 27.5200 25.7200 27.0000 3,298,200
2 · 10-Q Pre-market · 09:16 ET 10-Q ↗ 1 · 8-K Pre-market · 07:05 ET 8-K ↗
26.1400 26.5200 26.0700 26.1500 2,173,000
Weekend
Weekend

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 · 08:00 ET Summarise
26 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:09 ET Summarise
25 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
24 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 17:03 ET Summarise
23 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:07 ET Summarise
22 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
21 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
20 8-K/A 8-K/A (opens SEC filing in a new tab) After-hours · 16:51 ET Summarise
19 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 17:11 ET Summarise
18 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 17:04 ET Summarise
17 PRE 14A PRE 14A (opens SEC filing in a new tab) After-hours · 17:21 ET Summarise
16 8-K 8-K (opens SEC filing in a new tab) After market open · 09:31 ET Summarise
15 10-K 10-K (opens SEC filing in a new tab) After market open · 09:31 ET Summarise
14 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
13 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:37 ET Summarise
12 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:00 ET Summarise
11 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:06 ET Summarise
10 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:28 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:45 ET Summarise
8 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 09:20 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) Pre-market · 09:09 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:50 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) Pre-market · 09:09 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) Pre-market · 09:15 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 09:16 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise