Allison Transmission Holdings, Inc ALSN

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Allison Transmission Holdings, Inc. Common Stock · Company · NYSE

Announcement types: (default: consequential filings)
Results & current reports
Capital markets
Ownership & governance

USD closing-price chart (daily close from yfinance · Last year)

USD 86.09 → 119.06 · 38.3%
136.000107.63579.270 1 2 3 4 5 6 7 8 9 10 11 12 13,14 15 16 17 18 Jul 25Oct 25Jan 26Apr 26Jul 26

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

Price & SEC Filing History 22 Jul 2025 — 23 Jul 2026 (Last year)

Daily NYSE 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
117.0000 119.9900 116.9100 119.0600 846,983
115.2200 116.8900 113.3000 116.2100 782,600
114.3500 114.4900 112.2900 113.6700 717,200
Weekend
Weekend
114.6600 115.7500 112.9300 113.6000 642,400
113.1500 116.5000 111.9200 115.4900 603,500
115.0200 115.4400 112.0300 114.2900 675,200
118.3000 118.6400 114.1100 115.0600 547,200
114.9100 116.9600 114.4800 115.9800 813,100
Weekend
Weekend
114.4300 115.6500 113.7400 114.2100 501,600
113.2700 115.8100 113.2700 113.7800 759,600
111.9300 113.0300 109.7100 111.7500 1,133,400
115.9000 115.9000 113.4000 114.1700 1,237,400
115.7700 117.5000 113.6000 116.6000 1,232,200
Weekend
Weekend
No trading
118.1300 120.7500 115.9100 116.3700 12,259,900
119.5500 121.4700 117.4400 117.4600 3,367,700
116.3700 117.1300 110.7900 112.7400 1,192,100
118.8500 119.9100 114.9400 115.3600 1,097,200
Weekend
Weekend
123.2000 123.3900 119.7100 119.8400 1,239,700
121.2700 125.9000 121.2700 124.5200 514,300
116.6400 120.2900 116.5300 119.6800 641,300
118.6700 119.6400 116.9700 117.0000 843,700
119.5300 122.0400 119.0000 121.1200 864,600
Weekend
Weekend
No trading
120.6200 121.5300 118.9400 119.1000 1,824,200
121.0600 123.0100 117.9600 118.8600 696,400
18 · 8-K After-hours · 16:14 ET 8-K ↗
120.1700 122.4500 120.1700 121.0300 570,100
120.0600 121.4400 119.0200 119.4700 743,500
Weekend
Weekend
116.8500 117.5800 115.0800 117.3500 676,800
115.1200 116.8700 113.8000 115.5200 647,600
117.5900 119.8900 113.4100 113.8200 781,400
117.0600 119.4900 114.3400 117.9100 829,200
116.5100 116.9700 115.0300 115.4800 646,300
Weekend
Weekend
117.3300 118.4400 115.4200 115.7500 694,200
118.6000 119.6000 117.0100 118.3800 732,100
115.6400 119.7400 115.6400 119.0500 809,600
112.7900 116.4500 112.7600 116.1400 779,200
112.0100 113.0800 109.4600 111.6700 1,083,800
Weekend
Weekend
113.4600 115.5800 111.6900 113.5300 1,986,400
113.3400 115.1800 111.1000 113.5200 1,187,500
114.6900 115.7700 112.9100 113.8600 776,600
111.1600 114.1700 110.9500 114.0900 990,400
No trading
Weekend
Weekend
110.1000 111.2000 108.0000 109.8700 1,004,700
107.9000 109.2800 106.1200 109.0700 967,600
108.5300 108.9500 106.3100 108.3500 1,443,800
112.5800 113.5400 107.3700 108.0100 1,208,700
116.9800 117.4800 114.0100 114.0600 1,292,800
Weekend
Weekend
121.3100 123.3200 116.9200 116.9900 767,300
123.7900 124.5900 121.4900 122.3500 802,000
120.3700 123.1800 118.6500 122.4700 1,136,100
123.3000 123.3000 117.9100 119.8000 807,300
124.7100 125.1300 123.0000 123.7200 696,900
Weekend
Weekend
17 · 8-K After-hours · 16:15 ET 8-K ↗
124.2200 125.7300 122.8800 124.1800 795,200
16 · 10-Q After-hours · 16:04 ET 10-Q ↗
127.9800 128.2100 122.6800 123.0200 973,100
129.9300 133.2100 126.3900 127.7000 974,300
125.0000 129.1400 119.1500 127.3700 1,965,100
15 · 8-K After-hours · 16:41 ET 8-K ↗
130.5400 131.9400 128.1700 129.0400 1,300,400
Weekend
Weekend
133.7700 134.7500 131.1200 131.2300 738,200
130.1100 135.8600 130.0100 134.3500 881,400
130.5300 131.5900 128.9100 129.1000 678,700
133.7900 134.1600 129.1200 130.0200 708,800
135.7200 137.6200 133.6100 133.6900 883,300
Weekend
Weekend
135.2500 136.9400 134.6100 135.5100 804,400
133.4900 136.8900 133.4600 136.0000 756,600
132.3500 133.2200 131.0100 133.0400 979,300
130.1300 132.5000 129.0300 131.3400 984,200
128.5700 130.3900 128.1800 129.7400 640,200
Weekend
Weekend
126.6400 130.5600 126.6400 128.5000 589,600
125.0400 126.3800 124.2200 125.7000 534,500
128.2800 129.1000 124.8300 125.8200 945,600
129.7200 130.8300 128.2500 128.2600 1,023,700
128.0400 130.2200 126.9500 129.6000 863,000
Weekend
Weekend
128.1300 128.6200 126.5700 128.5100 787,500
124.3800 127.7800 123.8200 127.4800 630,900
122.0300 125.4000 121.0900 125.0000 659,800
116.9200 118.9400 116.8000 117.2800 670,600
116.4600 117.7800 115.3200 117.4600 531,500
Weekend
Weekend
No trading
116.2100 120.0400 115.3300 117.0600 355,300
118.3700 119.8700 117.8300 118.8400 495,100
114.3600 117.7800 114.0000 117.0600 536,200
116.0300 116.7300 112.1100 112.6000 597,600
Weekend
Weekend
115.3400 116.8200 114.2700 114.4600 507,500
117.7600 119.4700 116.1200 116.3200 481,200
14 · DEFA14A After-hours · 16:07 ET DEFA14A ↗ 13 · DEF 14A After-hours · 16:06 ET DEF 14A ↗
118.7100 119.6900 117.5900 118.9700 567,500
113.7900 119.1000 113.7900 117.8900 783,700
113.7700 117.2400 113.1900 114.6600 941,100
Weekend
Weekend
111.7800 112.6000 109.4200 110.7000 2,152,600
111.7800 112.8400 110.4300 112.1900 789,900
113.9100 116.3400 113.1200 113.2700 990,700
114.5500 115.1100 112.9100 114.2100 967,600
114.0100 114.7100 112.8400 113.3900 760,000
12 · 8-K/A Next filing day · accepted 13 Mar, 18:01 ET 8-K/A ↗
Weekend
Weekend
113.9100 114.6300 111.3700 112.8200 795,200
111.6700 113.3000 110.8700 113.1100 728,400
114.3600 115.0900 112.2400 113.1800 758,400
116.8900 118.7500 114.4400 114.6400 756,700
114.0200 117.2100 111.3600 116.8700 856,800
Weekend
Weekend
120.0200 120.3300 116.5900 116.9400 1,091,900
125.5500 126.7300 121.1100 122.1400 969,300
126.3400 128.8500 125.6100 126.9400 1,432,100
123.6200 124.9800 120.3800 124.8000 1,088,600
124.0300 127.1100 122.0100 126.9100 977,800
Weekend
Weekend
124.0000 126.3100 122.4300 125.3000 1,336,000
123.5600 125.4700 122.4100 124.8100 1,370,400
122.2700 124.6800 121.0700 122.7200 1,528,300
117.3800 125.6600 117.3700 121.9900 1,907,000
11 · 10-K Pre-market · 09:28 ET 10-K ↗ 10 · 8-K After-hours · 16:10 ET 8-K ↗
118.4400 119.3000 115.3800 116.8400 1,003,700
Weekend
Weekend
117.7900 119.4800 116.8900 118.8500 971,400
116.6200 117.9200 115.8800 117.7800 809,700
118.2100 119.4500 116.7900 116.9700 779,400
116.9100 118.1900 116.3500 117.4600 513,700
No trading
Weekend
Weekend
115.6100 118.5900 115.1400 117.7900 692,600
117.0000 118.7500 115.0500 115.7500 774,400
115.8900 118.5000 115.8500 116.4500 763,000
115.1000 116.0500 113.9000 115.3300 1,216,600
115.5900 115.8400 114.3000 114.9700 719,900
Weekend
Weekend
114.1300 116.1500 114.1300 115.6300 863,600
113.5000 114.2000 112.1700 113.7500 887,400
112.8000 114.9900 112.2800 114.2000 1,251,600
109.9600 113.4500 109.9600 111.7400 762,500
108.5000 111.1300 108.5000 110.2400 813,000
Weekend
Weekend
111.6200 111.9400 108.6300 108.7000 859,300
111.2500 111.8200 110.2700 111.5600 675,300
110.9500 111.5200 109.3900 110.5900 640,600
109.5900 111.0500 108.7900 110.9500 645,400
109.8800 110.2400 108.8200 109.6300 633,700
Weekend
Weekend
111.5600 111.5600 108.8500 109.5700 620,900
111.3500 111.6200 110.2800 111.0300 731,400
110.3500 113.3100 109.5000 110.9600 1,117,400
109.0000 110.5000 108.3700 109.3800 951,700
No trading
Weekend
Weekend
111.3400 112.0600 109.7400 110.2000 820,500
109.1500 112.2100 107.6900 111.5500 1,092,200
106.5800 109.4000 105.7700 107.9800 937,800
105.6100 106.1900 104.8900 105.9600 651,400
103.4200 105.4500 103.2800 105.3400 647,500
Weekend
Weekend
102.7000 104.6200 102.3600 104.2500 723,600
99.1300 103.7500 99.1300 102.1800 1,007,900
101.2200 101.8000 99.3300 99.4600 812,500
97.6400 102.0500 97.6400 101.5800 1,000,600
98.2800 100.4900 97.9200 97.9700 785,400
Weekend
Weekend
98.1000 99.3500 97.7200 98.9400 697,000
9 · 8-K Pre-market · 08:54 ET 8-K ↗
No trading
98.7900 98.7900 97.8700 97.9000 623,600
99.6400 100.1800 98.8700 98.9100 525,800
100.9000 101.0900 99.6600 99.8500 697,400
Weekend
Weekend
100.8200 101.0600 99.8800 100.9300 331,800
No trading
100.7300 101.1500 99.9300 100.8000 304,900
100.2700 100.8000 99.5400 100.4800 593,900
99.2600 101.1800 98.7400 100.7500 776,700
Weekend
Weekend
99.4700 100.0000 98.5000 98.7200 1,932,600
99.0300 100.6600 98.2800 99.2900 1,183,700
98.2300 99.1400 97.0400 98.3100 1,301,900
99.4200 100.2000 97.9700 98.6900 916,700
100.0800 100.9200 98.7800 99.4200 932,500
Weekend
Weekend
100.0900 101.5500 99.0400 99.8400 1,240,100
98.8500 100.4200 98.5700 99.4700 1,291,500
94.0600 98.3600 93.3700 98.1500 1,121,400
94.3600 95.3700 93.0700 93.7200 897,300
94.9900 97.0500 94.1000 95.0800 2,784,200
Weekend
Weekend
90.1400 93.0300 89.4400 92.5400 1,267,900
90.8000 91.3500 90.0700 90.4500 577,100
89.1100 91.1100 89.1100 90.5200 710,000
89.6700 89.9900 88.8800 89.3200 813,200
88.5900 90.7400 88.1500 89.3200 1,168,300
Weekend
Weekend
89.4300 90.0000 88.5500 88.6600 789,700
No trading
87.7100 89.7100 86.9800 89.4600 1,158,500
86.0500 88.7000 85.0200 87.8400 1,114,900
8 · 8-K After-hours · 17:25 ET 8-K ↗
84.3100 85.7900 84.1800 85.3600 1,251,300
Weekend
Weekend
81.3500 85.5800 81.1800 84.3200 1,281,800
82.2600 82.5000 80.4400 81.2500 932,400
79.8500 81.4900 79.6600 81.2900 864,000
79.1500 80.2100 78.7700 79.7000 784,600
81.6400 81.7000 79.2100 79.2700 692,600
Weekend
Weekend
80.9800 82.2400 80.8100 81.7300 827,100
82.1300 82.9800 81.8200 82.3000 831,500
82.2500 83.8300 82.0000 82.0500 871,100
82.6300 83.3500 81.7300 81.9800 515,400
82.6600 83.3600 81.2200 82.7800 883,900
Weekend
Weekend
80.8900 82.4100 80.3300 81.9500 908,400
7 · 8-K Pre-market · 06:03 ET 8-K ↗
81.0000 83.0000 80.0800 81.4700 1,229,000
78.6100 81.7400 78.1900 80.7600 1,033,100
6 · 8-K After-hours · 17:23 ET 8-K ↗
80.5200 80.5200 79.0000 79.4000 1,148,800
82.5800 83.1300 81.2900 81.3500 1,343,000
Weekend
Weekend
82.5700 84.2100 82.3400 82.5500 1,170,000
5 · 8-K Next filing day · accepted 30 Oct, 21:43 ET 8-K ↗
77.2200 84.8600 76.0100 83.5800 2,387,200
4 · 10-Q Pre-market · 09:06 ET 10-Q ↗ 3 · 8-K After-hours · 16:05 ET 8-K ↗
82.1500 84.4400 81.0100 81.5900 1,423,300
83.0100 84.2200 82.0200 82.1100 735,900
83.4000 83.5200 82.8800 83.4000 578,600
Weekend
Weekend
83.9200 84.2500 82.7500 82.7900 597,400
82.6600 83.3600 81.6500 83.2500 720,800
82.5900 83.2700 81.5600 82.2900 1,130,300
81.3100 82.8600 81.0800 82.5000 536,800
81.4000 81.8600 80.7500 81.3800 471,900
Weekend
Weekend
81.0800 81.8900 79.9500 80.8800 670,800
83.6000 83.8900 81.0000 81.7300 594,900
82.1300 83.9100 82.0200 83.1000 959,400
79.4500 82.2700 79.3500 82.1300 844,100
80.5900 81.3800 80.0900 80.7100 773,000
Weekend
Weekend
81.3200 81.6500 79.3600 79.4700 909,800
82.6800 82.7200 80.9500 81.0200 601,700
83.3800 84.2000 82.5900 82.9100 789,800
85.0900 85.4800 83.5400 83.6900 1,003,200
87.0500 87.3800 84.7000 84.7400 676,400
Weekend
Weekend
86.7800 87.6600 86.1900 86.4700 761,800
86.2000 87.0300 85.3100 86.5400 814,700
84.3500 87.0000 84.2100 85.9000 874,300
84.3200 85.0900 83.9100 84.8800 731,000
86.0700 86.1900 84.0300 84.4300 818,500
Weekend
Weekend
85.8400 86.4900 85.4300 85.6800 891,800
86.3600 86.4400 84.9400 85.3300 706,600
87.4700 88.0700 86.3500 86.8200 715,300
88.4500 89.8200 86.8600 87.3800 805,300
88.2000 88.7300 87.5400 88.3800 860,800
Weekend
Weekend
89.3200 89.3200 88.1800 88.3000 2,225,400
87.6400 89.8900 87.4500 89.0300 731,400
88.0000 88.9900 86.3900 87.3200 962,100
88.0300 88.3000 87.0700 87.6800 962,600
88.5300 89.2400 87.6000 87.7300 825,000
Weekend
Weekend
89.8300 90.2500 88.2400 88.4100 587,900
88.7700 91.2700 88.1900 90.5000 1,037,300
88.5100 89.4600 88.1100 88.5900 600,900
90.0700 90.3400 88.1800 88.5800 744,100
90.2500 90.2500 88.3900 89.9800 837,700
Weekend
Weekend
89.2500 90.1600 88.6900 90.0200 800,000
88.4200 89.3700 87.9700 89.2300 936,200
87.9600 89.0600 87.2800 88.0000 1,110,300
85.7800 87.7600 85.0000 87.7600 1,307,800
No trading
Weekend
Weekend
87.5900 88.1100 86.9700 87.3100 823,700
89.5200 89.5200 87.5200 87.7400 1,075,600
87.9200 89.4600 87.7900 89.2000 771,500
88.3200 89.1300 88.0300 88.3500 996,400
89.2500 89.6700 88.3000 88.3600 847,300
Weekend
Weekend
87.1300 90.0000 86.4200 89.3100 706,300
86.7300 87.6000 86.1400 86.4500 1,316,100
87.1400 87.7400 86.6000 87.2900 638,400
88.6600 89.3400 87.5400 87.7900 518,400
87.5800 88.4900 87.1900 88.4000 843,500
Weekend
Weekend
89.1000 89.1600 86.1400 87.0000 1,321,900
89.5700 90.7600 88.2200 88.8700 874,100
91.2100 91.4300 90.2500 90.7000 1,655,800
89.0000 91.2500 88.4500 91.2500 753,200
88.0900 88.8000 87.5500 88.2500 786,800
Weekend
Weekend
87.9300 88.3700 87.3400 87.7300 674,700
89.3600 89.6600 87.2300 87.4100 713,000
85.9800 88.3100 85.6700 88.2700 1,209,800
2 · 10-Q After-hours · 16:06 ET 10-Q ↗
85.0500 87.7900 83.7300 86.4200 2,291,500
1 · 8-K After-hours · 16:17 ET 8-K ↗
88.1200 89.0200 87.6400 88.0000 1,301,900
Weekend
Weekend
88.6900 89.0400 87.1700 87.6900 1,290,600
86.9600 90.1400 86.9000 90.0700 1,341,900
88.8500 88.8500 86.5800 87.0500 585,200
89.1500 89.3800 87.5500 88.3000 687,500
89.7500 89.7500 88.0100 88.0600 990,600
Weekend
Weekend
88.4600 89.5700 87.6000 89.4400 944,000
87.1800 88.1400 86.6900 87.9900 956,300
87.2600 88.4300 86.3100 88.0800 1,016,500
85.6100 86.5900 85.5800 86.0900 1,646,500

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.

18 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:14 ET Summarise
17 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
16 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:04 ET Summarise
15 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:41 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 8-K/A 8-K/A (opens SEC filing in a new tab) Next filing day · accepted 13 Mar, 18:01 ET Summarise
11 10-K 10-K (opens SEC filing in a new tab) Pre-market · 09:28 ET Summarise
10 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:54 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:25 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:03 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:23 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) Next filing day · accepted 30 Oct, 21:43 ET Summarise
4 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 09:06 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:17 ET Summarise