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

0100200300 Q1 2024: 233Q1 2024Q2 2024: 240Q2 2024Q3 2024: 252Q3 2024Q4 2024: 298Q4 2024Q1 2025: 3Q1 2025Q2 2025: 2Q2 2025Q3 2025: 1Q3 2025Q4 2025: 1Q4 2025Q1 2026: 1Q1 2026Q2 2026: 1Q2 2026

Total Exit/New Position Q2 2024 → Q3 2024

InstitutionsTotal Value
New Positions33$39.8M
Exits20$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
Ameritas Investment Partners, Inc. 0.06% Add +1.1% 17,904 $1.7M
Handelsbanken Fonder AB 0.01% Add +26.6% 17,600 $1.7M
Citadel Advisors 0.00% New 16,787 $1.6M
Russell Investments Group, Ltd. 0.00% Add +3.9% 16,588 $1.6M
Louisiana State Employees Retirement System 0.03% Add +2.5% 16,500 $1.6M
Arizona State Retirement System 0.01% Add +2.9% 16,399 $1.6M
Pacer Advisors, Inc. 0.00% Add +7.0% 16,158 $1.5M
State Board of Administration of Florida Retirement System 0.00% No change 15,263 $1.5M
Apriem Advisors 0.17% No change 14,965 $1.4M
Epoch Investment Partners, Inc. 0.01% Reduce -52.8% 14,801 $1.4M
Bradley Foster & Sargent Inc. 0.02% Add +0.0% 14,636 $1.4M
EDENTREE ASSET MANAGEMENT Ltd 0.40% No change 14,496 $1.4M
Healthcare of Ontario Pension Plan Trust Fund 0.00% New 14,200 $1.4M
State of Michigan Retirement System 0.01% Add +2.9% 14,100 $1.3M
Thrivent Financial for Lutherans 0.00% Add +1.5% 13,961 $1.3M
ProShare Advisors LLC 0.00% Add +32.8% 13,573 $1.3M
Pathstone Holdings, LLC 0.01% Reduce -0.3% 13,527 $1.3M
Cwm, LLC 0.01% Add +14.5% 13,207 $1.3M
Northwestern Mutual Investment Management Company, LLC 0.03% Add +3.7% 13,184 $1.3M
Commonwealth of Pennsylvania Public School Empls Retrmt SYS 0.01% Add +3.8% 13,100 $1.3M
Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% No change 12,894 $1.2M
Vontobel Holding Ltd. 0.00% Reduce -1.6% 12,588 $1.2M
Bank of Montreal 0.00% Reduce -43.5% 12,372 $1.2M
Oregon Public Employees Retirement Fund 0.02% Add +2.8% 12,130 $1.2M
NJ State Employees Deferred Compensation Plan 0.14% No change 12,000 $1.1M
New Mexico Educational Retirement Board 0.04% No change 11,500 $1.1M
Intech Investment Management LLC 0.01% New 11,350 $1.1M
Creative Planning 0.00% Add +5.9% 11,279 $1.1M
SG Americas Securities, LLC 0.00% New 11,043 $1.1M
Lighthouse Investment Partners, LLC 0.05% Reduce -58.0% 10,500 $1.0M
Harbor Capital Advisors, Inc. 0.04% Add +2.9% 10,017 $957K
Prescott Group Capital Management, L.L.C. 0.14% No change 10,000 $955K
Osaic Holdings, Inc. 0.00% Reduce -28.6% 9,643 $921K
Blair William & Co. 0.00% Add +96.9% 8,852 $845K
New York State Teachers Retirement System 0.00% Add +1.2% 8,500 $812K
Xponance LLC 0.01% Add +3.2% 7,930 $757K
Illinois Municipal Retirement Fund 0.01% No change 7,810 $746K
Rheos Capital Works Inc. 0.04% New 7,500 $716K
Susquehanna International Group, LLP 0.00% Add +250.5% 7,448 $711K
Acadian Asset Management LLC 0.00% Reduce -85.6% 7,352 $701K
Amundi 0.00% Reduce -0.9% 7,281 $694K
Cresset Asset Management, LLC 0.00% Reduce -17.2% 7,258 $693K
Headlands Technologies LLC 0.08% New 7,106 $679K
State of Alaska, Department of Revenue 0.01% Add +11.5% 6,900 $659K
US Bancorp \de 0.00% Add +19.6% 6,572 $628K
AlphaQuest LLC 0.05% New 6,459 $617K
Linden Thomas Advisory Services, LLC 0.08% Reduce -0.8% 6,363 $608K
New York Life Investment Management LLC 0.01% Reduce -6.3% 6,346 $606K
Prudential Financial Inc. 0.00% Reduce -0.3% 6,223 $594K
Captrust Financial Advisors 0.00% Reduce -3.8% 6,204 $593K
Jackson Square Capital, LLC 0.14% No change 6,033 $576K
MML Investors Services, LLC 0.00% Add +12.4% 6,007 $574K
Stifel Financial Corp. 0.00% Reduce -2.8% 5,985 $572K
F/m Investments LLC 0.02% Reduce -0.4% 5,950 $568K
Public Employees Retirement Association of Colorado 0.00% No change 5,588 $534K
STRS Ohio 0.00% Reduce -64.7% 5,400 $516K
Versor Investments LP 0.08% New 5,099 $487K
Schechter Investment Advisors, LLC 0.04% Add +5.6% 4,997 $477K
Guggenheim Capital LLC 0.00% Reduce -7.6% 4,937 $472K
Cullen/Frost Bankers, Inc. 0.01% Add +12.0% 4,878 $466K
Securian Asset Management, Inc. 0.01% No change 4,542 $434K
Two Sigma Securities, LLC 0.03% New 4,230 $404K
Crossmark Global Holdings, Inc. 0.01% Add +22.0% 3,947 $377K
Lindenwold Advisors, INC 0.18% Add +0.3% 3,809 $364K
Aquatic Capital Management LLC 0.01% New 3,789 $362K
Orion Porfolio Solutions, LLC 0.00% Add +20.4% 3,782 $361K
Orion Portfolio Solutions, LLC 0.00% Add +20.4% 3,782 $361K
Mariner, LLC 0.00% Add +40.6% 3,665 $350K
Nomura Holdings Inc. 0.00% New 3,664 $350K
Mackenzie Financial Corp. 0.00% Add +10.9% 3,515 $336K
nVerses Capital, LLC 0.15% New 3,500 $334K
Jefferies Financial Group Inc. 0.01% New 3,423 $327K
Boothbay Fund Management, LLC 0.01% New 3,308 $316K
Verition Fund Management LLC 0.00% New 3,280 $313K
Marco Investment Management LLC 0.02% Add +2.4% 3,015 $288K
Vanguard Personalized Indexing Management, LLC 0.00% Add +29.0% 3,000 $287K
AQR Capital Management 0.00% Add +4.3% 2,986 $283K
CW Advisors, LLC 0.00% New 2,952 $282K
Raymond James Trust N.A. 0.01% Reduce -1.3% 2,916 $279K
Profund Advisors LLC 0.01% Add +4.3% 2,910 $278K
Hardy Reed LLC 0.02% No change 2,570 $245K
Gotham Asset Management 0.00% New 2,536 $242K
Schonfeld Strategic Advisors LLC 0.00% New 2,512 $240K
Raymond James Financial Services Advisors, Inc. 0.00% New 2,508 $240K
Simplex Trading, LLC 0.01% Add +500.5% 2,492 $238K
Shelton Capital Management 0.01% No change 2,281 $218K
Ballentine Partners, LLC 0.00% Add +8.5% 2,236 $214K
Marshall Wace, LLP 0.00% New 2,204 $211K
Private Advisor Group, LLC 0.00% New 2,173 $208K
Envestnet Portfolio Solutions, Inc. 0.00% Add +2.7% 2,160 $206K
Nisa Investment Advisors, LLC 0.00% Add +1.9% 2,037 $195K
Smartleaf Asset Management LLC 0.02% Add +1.7% 1,787 $170K
KBC Group NV 0.00% Add +17.9% 1,640 $157K
Tower Research Capital LLC (TRC) 0.00% Reduce -77.0% 1,634 $156K
Natixis Investment Managers International 0.01% Reduce -11.2% 1,567 $150K
Van Eck Associates Corp. 0.00% Add +28.5% 1,358 $145K
Fifth Third Bancorp 0.00% Add +23.3% 1,288 $123K
Harvest Fund Management Co., Ltd 0.01% No change 1,188 $113K
PNC Financial Services Group, Inc. 0.00% Add +10.6% 1,144 $109K
Ostrum Asset Management 0.01% Reduce -43.9% 1,136 $108K
Mitsubishi UFJ Asset Management Co., Ltd. 0.00% Add +992.2% 1,114 $106K
Hilltop National Bank 0.03% Reduce -5.3% 1,050 $100K
Catalyst Funds Management Pty Ltd 0.02% New 800 $76K
Danske Bank A/S 0.00% New 800 $76K
Essex Investment Management Co. LLC 0.01% No change 746 $71K
AdvisorNet Financial, Inc 0.00% Add +6290.0% 639 $61K
GAMMA Investing LLC 0.01% Add +52.1% 636 $61K
Parallel Advisors, LLC 0.00% Add +22.1% 453 $43K
Signaturefd, LLC 0.00% Add +1.4% 436 $42K
Global Retirement Partners, LLC 0.00% Reduce -28.3% 415 $40K
Principal Securities, Inc. 0.00% Add +18.0% 394 $38K
Blue Trust, Inc. 0.00% Add +572.1% 289 $28K
EverSource Wealth Advisors, LLC 0.00% Add +99.0% 203 $19K
CIBC Private Wealth Group LLC 0.00% No change 190 $18K
TD Private Client Wealth LLC 0.00% No change 179 $17K
Clearstead Advisors, LLC 0.00% Reduce -37.2% 169 $16K
UMB Bank, n.a. 0.00% Add +519.2% 161 $15K
Lindbrook Capital, LLC 0.00% Add +0.7% 148 $14K
NBT Bank, N.A. 0.00% New 140 $13K
First Horizon Advisors, Inc. 0.00% No change 128 $12K
Private Trust Co. NA 0.00% No change 126 $12K
Covestor Ltd 0.01% No change 116 $11K
CoreCap Advisors, LLC 0.00% New 114 $11K
CI Investments Inc. 0.00% Reduce -1.9% 101 $10K
Allworth Financial LP 0.00% Reduce -15.4% 99 $9K
Quadrant Capital Group LLC 0.00% No change 81 $8K
Leonteq Securities AG 0.00% New 81 $8K
Parkside Financial Bank & Trust 0.00% Add +82.5% 73 $7K
Arax Advisory Partners 0.00% No change 68 $6K
Avior Wealth Management, LLC 0.00% No change 65 $6K
Farther Finance Advisors, LLC 0.00% Reduce -46.3% 65 $6K
Harel Insurance Investments & Financial Services Ltd. 0.00% Add +34.1% 59 $6K
Sterling Capital Management LLC 0.00% — 58 $6K
Rothschild Investment LLC 0.00% Add +266.7% 55 $5K
Your Advocates Ltd., LLP 0.00% No change 50 $5K
Brown Brothers Harriman & Co. 0.00% New 34 $3K
Huntington National Bank 0.00% Add +10.3% 32 $3K
GPS Wealth Strategies Group, LLC 0.00% No change 32 $3K
Bessemer Group Inc. 0.00% Reduce -59.7% 31 $3K
Continuum Advisory, LLC 0.00% Reduce -30.0% 28 $3K
Private Wealth Management Group, LLC 0.00% No change 30 $3K
Bell Investment Advisors, Inc 0.00% No change 29 $3K
Ashton Thomas Securities, LLC 0.00% New 26 $2K
MassMutual Private Wealth & Trust, FSB 0.00% Add +2400.0% 25 $2K
Lazard Asset Management LLC 0.00% No change 27 $2K
CarsonAllaria Wealth Management, Ltd. 0.00% No change 20 $2K
Geneos Wealth Management Inc. 0.00% New 17 $2K
Capital Advisors, Ltd. LLC 0.00% No change 6 $1K
Riggs Asset Managment Co. Inc. 0.00% No change 10 $956
Allspring Global Investments Holdings, LLC 0.00% No change 5 $477
Earned Wealth Advisors, LLC 0.00% New 2 $191
TFC Financial Management, Inc. 0.00% No change 1 $96

"% 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.