13F reference period
n/a
Security Snapshot
Altair Engineering Inc. - Class A Common Stock, $0.0001 par value per share (ALTR) Institutional Ownership
CUSIP: 021369103
13F Institutional Holders and Ownership History from Q4 2017 to Q2 2026
Institutions Reporting
Shares (Excl. Options)
n/a
Price
$2075.00
The headline uses the Q3 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended.
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- Security type / class
- Equity / Class A Common Stock, $0.0001 par value per share
- Symbol
- ALTR
- Shares outstanding
- 59,830,848
- SEC-reported price per share
- $2075.00
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source
Key facts
- ALTR - Altair Engineering Inc. - Class A Common Stock, $0.0001 par value per share is tracked under CUSIP 021369103.
- 13F reference-period holder data is not available.
- 1 significant owner is listed from Schedule 13D/13G reporting.
Change
- Holder data for the Q3 2026 reference period is not available.
- Available periods remain in the history table; they do not substitute for the headline period.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Schedule 13D/G
Open SEC evidence
Ownership context comes from Schedule 13D/G and available holder history for this CUSIP.
Security key
021369103
13F reference period
n/a
13F holders
13D/G owners
1
CIK / CUSIP context first
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 021369103:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
1
Security
ALTR
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 12% | $862,066,790 | 7,478,856 | BlackRock, Inc. | 31 Dec 2024 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
35
Headline period
n/a
Rows shown
1-25 of 35
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 1 | $2,075 | $2075.00 | 1 | |
| 2026 Q1 | 1 | $2,075 | $2075.00 | 1 | |
| 2025 Q4 | 1 | $2,075 | $2075.00 | 1 | |
| 2025 Q3 | 1 | $2,075 | $2075.00 | 1 | |
| 2025 Q2 | 25 | $4,128 | -$138,994 | $1096.08 | 2 |
| 2025 Q1 | 465 | $53,716 | -$5,940,832,310 | $115.27 | 3 |
| 2024 Q4 | 54,664,547 | $5,963,491,885 | -$569,570,580 | $109.11 | 294 |
| 2024 Q3 | 60,492,859 | $5,776,700,185 | +$17,890,769 | $95.51 | 249 |
| 2024 Q2 | 60,156,549 | $5,899,184,796 | +$438,126,304 | $98.08 | 238 |
| 2024 Q1 | 55,844,315 | $4,809,441,557 | +$115,087,419 | $86.15 | 232 |
| 2023 Q4 | 54,886,858 | $4,617,821,985 | +$192,397,902 | $84.15 | 214 |
| 2023 Q3 | 52,728,568 | $3,298,142,020 | +$40,240,627 | $62.56 | 192 |
| 2023 Q2 | 51,900,079 | $3,934,939,667 | +$20,000,398 | $75.84 | 210 |
| 2023 Q1 | 51,674,182 | $3,725,094,462 | +$171,814,924 | $72.11 | 196 |
| 2022 Q4 | 49,846,753 | $2,267,003,488 | +$55,558,611 | $45.47 | 171 |
| 2022 Q3 | 50,099,323 | $2,215,475,199 | -$13,328,222 | $44.22 | 174 |
| 2022 Q2 | 50,148,183 | $2,632,386,980 | +$27,341,208 | $52.50 | 178 |
| 2022 Q1 | 49,607,215 | $3,192,575,727 | -$3,250,678 | $64.40 | 179 |
| 2021 Q4 | 49,419,094 | $3,819,874,726 | +$52,306,562 | $77.32 | 173 |
| 2021 Q3 | 48,780,556 | $3,363,455,565 | +$288,057,967 | $68.94 | 169 |
| 2021 Q2 | 44,566,064 | $3,073,407,221 | +$106,927,803 | $68.97 | 163 |
| 2021 Q1 | 43,046,412 | $2,693,149,144 | +$90,122,999 | $62.57 | 162 |
| 2020 Q4 | 41,635,885 | $2,421,778,884 | +$96,675,214 | $58.18 | 144 |
| 2020 Q3 | 39,972,658 | $1,678,037,673 | +$49,318,512 | $41.98 | 133 |
| 2020 Q2 | 38,842,260 | $1,543,607,638 | +$19,170,007 | $39.75 | 120 |