Altair Engineering Inc. Class AALTR
13F holders, Q3 2024 (September 30)252holders +12
33new positions
20sold out
6famous investors
$95.49avg. 13F price*
At the end of Q3 2024, 252 institutions reported holding Altair Engineering Inc. Class A (ALTR) in their 13F filings, up 12 from Q2 2024. 33 opened new positions and 20 sold out. The largest holders were Matrix Capital Management Company, LP ($1.2B), BlackRock, Inc. ($768.4M) and Vanguard Group Inc. ($628.1M). 6 famous investors held it, including Ron Baron (0.3% of Baron Capital (BAMCO)'s portfolio), Cathie Wood (0.0% of ARK Investment Management's portfolio) and Ken Fisher (0.0% of Fisher Asset Management's portfolio).
- Company
- Altair Engineering Inc. Class A
- CUSIP
- 021369103
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2024 → Q3 2024
| Institutions | Total Value | |
|---|---|---|
| New Positions | 33 | $39.8M |
| Exits | 20 | $43.3M |
All 13F filers, Q2 2024 → Q3 2024: 2,517,150 shares bought and 2,228,303 shares sold, net +288,847 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 252 holders
| Matrix Capital Management Company, LP | 56.68% | No change | 12,430,000 | $1.2B |
| BlackRock, Inc. | 0.02% | — | 8,044,785 | $768.4M |
| Vanguard Group Inc. | 0.01% | Add +4.4% | 6,576,655 | $628.1M |
| Conestoga Capital Advisors, LLC | 3.27% | Add +1.4% | 2,522,551 | $240.9M |
| Pictet Asset Management Holding SA | 0.24% | Reduce -4.6% | 2,275,399 | $217.3M |
| State Street Corp. | 0.01% | Add +3.3% | 2,053,957 | $196.2M |
| William Blair Investment Management, LLC | 0.35% | Add +57.5% | 1,471,184 | $140.5M |
| Geode Capital Management, LLC | 0.01% | Add +3.9% | 1,423,880 | $136.0M |
| Invesco Ltd. | 0.03% | Reduce -4.9% | 1,405,961 | $134.3M |
| Impax Asset Management Group plc | 0.51% | Reduce -3.3% | 1,360,221 | $129.1M |
| Alliancebernstein L.P. | 0.04% | Reduce -1.8% | 1,270,603 | $121.4M |
| Baron Capital (BAMCO) | 0.32% | Reduce -9.1% | 1,259,344 | $120.3M |
| Janus Henderson Group PLC | 0.05% | Add +0.2% | 1,070,621 | $102.3M |
| T. Rowe Price Investment Management, Inc. | 0.06% | Reduce -21.5% | 982,039 | $93.8M |
| AXA S.A. | 0.20% | Reduce -1.2% | 707,144 | $67.5M |
| Wellington Management Group LLP | 0.01% | Reduce -3.6% | 702,581 | $67.1M |
| Candriam S.C.A. | 0.39% | Add +25.0% | 700,698 | $66.9M |
| Morgan Stanley | 0.00% | Reduce -9.2% | 690,690 | $66.0M |
| Ameriprise Financial Inc. | 0.02% | Reduce -17.1% | 688,258 | $65.7M |
| Northern Trust Corp. | 0.01% | Add +5.7% | 687,823 | $65.7M |
| Dimensional Fund Advisors LP | 0.01% | Add +12.7% | 578,988 | $55.3M |
| Aberdeen Group plc | 0.10% | Reduce -4.1% | 566,936 | $54.1M |
| Charles Schwab Investment Management Inc. | 0.01% | Add +9.2% | 505,470 | $48.3M |
| Bank of New York Mellon Corp | 0.01% | Reduce -17.3% | 470,760 | $45.0M |
| Franklin Resources Inc. | 0.01% | Reduce -11.2% | 428,283 | $40.9M |
| Federated Hermes, Inc. | 0.09% | Add +6.2% | 421,752 | $40.3M |
| Royal Bank of Canada | 0.01% | Reduce -3.5% | 415,368 | $39.7M |
| Fisher Asset Management | 0.02% | Add +27.0% | 401,612 | $38.4M |
| Massachusetts Financial Services Co. | 0.01% | Add +31.6% | 392,343 | $37.5M |
| Victory Capital Management Inc. | 0.04% | Add +25.2% | 388,089 | $37.1M |
| Fred Alger Management, LLC | 0.18% | Reduce -18.3% | 381,760 | $36.5M |
| Thematics Asset Management | 1.42% | No change | 376,281 | $35.9M |
| Stephens Investment Management Group LLC | 0.49% | Reduce -4.2% | 376,279 | $35.9M |
| Goldman Sachs Group Inc. | 0.01% | Add +114.2% | 343,802 | $32.8M |
| Palisade Capital Management, LP | 0.96% | Reduce -5.8% | 335,426 | $32.0M |
| Primecap Management Co. | 0.02% | Reduce -6.4% | 322,493 | $30.8M |
| Needham Investment Management LLC | 1.70% | Add +19.3% | 231,500 | $22.1M |
| FMR LLC | 0.00% | Add +3.7% | 214,895 | $20.5M |
| Macquarie Group Ltd. | 0.02% | New | 211,360 | $20.2M |
| Comerica Bank | 0.08% | Reduce -1.7% | 200,084 | $19.1M |
| Rhumbline Advisers | 0.02% | Reduce -1.1% | 176,751 | $16.9M |
| King Luther Capital Management Corp. | 0.07% | Add +5.6% | 174,733 | $16.7M |
| Principal Financial Group Inc. | 0.01% | Reduce -22.0% | 165,793 | $15.8M |
| Nuveen Asset Management, LLC | 0.00% | Add +0.3% | 162,066 | $15.5M |
| Bank of America Corp. | 0.00% | Reduce -0.6% | 157,596 | $15.1M |
| JPMorgan Chase & Co. | 0.00% | Add +6.4% | 137,781 | $13.2M |
| Mairs & Power Inc. | 0.11% | Reduce -2.7% | 127,394 | $12.2M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -13.6% | 126,613 | $12.1M |
| Raymond James & Associates | 0.01% | Add +0.4% | 120,485 | $11.5M |
| New York State Common Retirement Fund | 0.01% | Reduce -5.6% | 115,209 | $11.0M |
| Swiss National Bank | 0.01% | Reduce -0.7% | 111,200 | $10.6M |
| Barclays PLC | 0.00% | Add +218.6% | 104,844 | $10.0M |
| Corebridge Financial, Inc. | 0.05% | Reduce -1.9% | 100,401 | $9.6M |
| State of Wisconsin Investment Board | 0.02% | No change | 100,078 | $9.6M |
| California Public Employees Retirement System | 0.01% | Add +38.7% | 93,426 | $8.9M |
| Legal & General Group Plc | 0.00% | Add +4.2% | 91,764 | $8.8M |
| Neuberger Berman Group LLC | 0.01% | Reduce -38.3% | 86,872 | $8.3M |
| Nicholas Company, Inc. | 0.13% | No change | 85,960 | $8.2M |
| Envestnet Asset Management Inc. | 0.00% | Reduce -0.0% | 85,056 | $8.1M |
| Voya Investment Management LLC | 0.01% | Add +44.0% | 77,477 | $7.4M |
| Moody Aldrich Partners LLC | 1.31% | Add +15.2% | 75,233 | $7.2M |
| Homestead Advisers Corp | 0.17% | Reduce -16.3% | 74,377 | $7.1M |
| Retirement Systems of Alabama | 0.03% | Add +2.7% | 72,191 | $6.9M |
| Manufacturers Life Insurance Company, The | 0.01% | Reduce -1.0% | 69,198 | $6.6M |
| Mutual of America Capital Management LLC | 0.06% | Reduce -1.2% | 64,588 | $6.2M |
| Sit Investment Associates Inc. | 0.14% | No change | 63,543 | $6.1M |
| MetLife Investment Management, LLC | 0.03% | Reduce -0.0% | 61,910 | $5.9M |
| Wells Fargo & Company | 0.00% | Reduce -14.0% | 60,739 | $5.8M |
| Norges Bank | 0.00% | Reduce -18.0% | 58,582 | $5.6M |
| Squarepoint Ops LLC | 0.02% | New | 57,207 | $5.5M |
| California State Teachers Retirement System | 0.01% | Reduce -3.1% | 53,886 | $5.1M |
| Citigroup Inc. | 0.00% | Add +141.0% | 50,518 | $4.8M |
| CANADA LIFE ASSURANCE Co | 0.01% | Add +14.3% | 44,577 | $4.3M |
| First Trust Advisors LP | 0.00% | Add +147.0% | 44,501 | $4.3M |
| Jane Street Group, LLC | 0.01% | Reduce -76.4% | 41,228 | $3.9M |
| ARK Investment Management | 0.04% | Reduce -19.9% | 40,463 | $3.9M |
| LPL Financial LLC | 0.00% | Add +9.8% | 38,500 | $3.7M |
| Mirabella Financial Services LLP | 0.19% | Add +560.7% | 37,262 | $3.4M |
| BNP Paribas Financial Markets | 0.00% | Reduce -44.7% | 34,425 | $3.3M |
| UBS Group AG | 0.00% | Add +48.6% | 34,366 | $3.3M |
| Teachers Retirement System of the State of Kentucky | 0.03% | Add +30.4% | 34,242 | $3.3M |
| Deutsche Bank AG | 0.00% | Add +27.8% | 34,119 | $3.3M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.01% | Add +12.1% | 32,653 | $3.1M |
| T. Rowe Price Associates Inc. | 0.00% | Add +1.9% | 31,424 | $3.0M |
| Sei Investments Co. | 0.00% | Reduce -25.3% | 29,812 | $2.8M |
| Amalgamated Bank | 0.02% | Reduce -1.7% | 27,132 | $2.6M |
| Zacks Investment Management | 0.02% | New | 26,339 | $2.5M |
| QRG Capital Management, Inc. | 0.03% | Add +9.3% | 25,874 | $2.5M |
| Daiwa Securities Group Inc. | 0.01% | Add +44.1% | 24,500 | $2.3M |
| Glenmede Trust Co. NA | 0.01% | Add +11.1% | 23,343 | $2.2M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.01% | Reduce -74.7% | 23,282 | $2.2M |
| Zions Bancorporation, N.A. | 0.16% | Add +17.4% | 22,493 | $2.1M |
| State of New Jersey Common Pension Fund D | 0.01% | Add +3.3% | 22,003 | $2.1M |
| Yousif Capital Management, LLC | 0.02% | Reduce -9.0% | 21,613 | $2.1M |
| Select Equity Group, L.P. | 0.01% | Reduce -2.0% | 21,346 | $2.0M |
| Ensign Peak Advisors, Inc | 0.00% | No change | 21,277 | $2.0M |
| TD Asset Management Inc | 0.00% | Reduce -29.3% | 20,800 | $2.0M |
| State of Tennessee, Department of Treasury | 0.01% | No change | 20,446 | $2.0M |
| Abn Amro Investment Solutions | 0.03% | Reduce -10.5% | 18,967 | $1.8M |
| Natixis Advisors, LLC | 0.00% | Add +0.4% | 18,321 | $1.8M |
"% of holder's portfolio" is ALTR's weight in each manager's 13F, not the share of Altair Engineering Inc. Class A the manager owns.