Altair Engineering Inc

Q3 2024 vs Q4 2024

Comparing institutional holders between quarters

Compare Detailed Historical Funds Options 13D/13G Peers Targeting Trading Summary Profile

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Calamos Advisors LLC

INCREASED

Shares29,443,000 from 10,000,000

Change+19,443,000 (+194%)

Value$45.9M (+$31.6M)

Filed 2025-01-24

Alberta Investment Management Corp

UNCHANGED

Shares22,500,000 from 22,500,000

Change0 (0%)

Value$35.1M (+$2.8M)

Filed 2025-02-03

Capstone Investment Advisors, LLC

UNCHANGED

Shares16,000,000 from 16,000,000

Change0 (0%)

Value$24.9M (+$2.1M)

Filed 2025-02-14

Parallax Volatility Advisers, L.P.

UNCHANGED

Shares10,000,000 from 10,000,000

Change0 (0%)

Value$15.5M (+$1.3M)

Filed 2025-02-14

FMR LLC

INCREASED

Shares8,080,000 from 7,590,000

Change+490,000 (+6%)

Value$12.6M (+$1.8M)

Filed 2026-11-05

Absolute Investment Advisers, LLC

UNCHANGED

Shares8,041,000 from 8,041,000

Change0 (0%)

Value$12.5M (+$1.0M)

Filed 2025-01-24

Bank of Montreal

INCREASED

Shares7,500,000 from 5,000,000

Change+2,500,000 (+50%)

Value$11.7M (+$4.5M)

Filed 2025-02-13

JPMorgan Chase & Co

INCREASED

Shares6,206,000 from 53,000

Change+6,153,000 (+11609%)

Value$9.6M (+$9.6M)

Filed 2025-02-12

Man Group plc

DECREASED

Shares5,617,000 from 15,617,000

Change-10,000,000 (-64%)

Value$8.8M (-$13.6M)

Filed 2025-02-14

Daiwa Securities Group Inc.

NEW

Shares5,000,000

Change+5,000,000

Value$7.8K

Filed 2025-02-07

Shenkman Capital Management Inc

DECREASED

Shares4,260,000 from 7,390,000

Change-3,130,000 (-42%)

Value$6.9M (-$3.9M)

Filed 2025-02-10

AQR Arbitrage LLC

NEW

Shares3,000,000

Change+3,000,000

Value$4.7M

Filed 2025-02-14

Aristeia Capital, L.L.C.

DECREASED

Shares3,000,000 from 4,000,000

Change-1,000,000 (-25%)

Value$4.7M (-$1.0M)

Filed 2025-02-14

Linden Advisors LP

UNCHANGED

Shares2,313,000 from 2,313,000

Change0 (0%)

Value$3.6M (+$298.3K)

Filed 2025-02-14

Zazove Associates LLC

UNCHANGED

Shares1,250,000 from 1,250,000

Change0 (0%)

Value$1.9M (+$161.9K)

Filed 2025-02-13

Bank of America Corp

NEW

Shares875,000

Change+875,000

Value$1.4M

Filed 2025-02-14

AGF Management LTD

UNCHANGED

Shares850,000 from 850,000

Change0 (0%)

Value$1.3M (+$110.9K)

Filed 2025-02-07

Bank of New York Mellon Corp

UNCHANGED

Shares150,000 from 150,000

Change0 (0%)

Value$233.7K (+$18.1K)

Filed 2025-02-04

Lake Street Advisors Group, LLC

UNCHANGED

Shares97,000 from 97,000

Change0 (0%)

Value$150.7K (+$12.7K)

Filed 2025-02-04

Boussard & Gavaudan Investment Management LLP

UNCHANGED

Shares17,876 from 17,876

Change0 (0%)

Value$27.8M (+$2.3M)

Filed 2025-02-12

Arkadios Wealth Advisors

UNCHANGED

Shares16,000 from 16,000

Change0 (0%)

Value$24.9K (+$2.1K)

Filed 2025-01-15

Raymond James Financial Inc

NEW

Shares13,000

Change+13,000

Value$20.2K

Filed 2025-04-23

CSS LLC

NEW

Shares11,000

Change+11,000

Value$17.1K

Filed 2025-02-18

Camden Asset Management L P

CLOSED

Shares0 from 19,960,000

Change-19,960,000 (-100%)

Value$0 (-$28.4M)

Filed 2025-02-13

Citadel Advisors LLC

CLOSED

Shares0 from 15,000,000

Change-15,000,000 (-100%)

Value$0 (-$21.4M)

Filed 2025-02-14

Readystate Asset Management LP

CLOSED

Shares0 from 14,750,000

Change-14,750,000 (-100%)

Value$0 (-$21.1M)

Filed 2025-02-14

Lord, Abbett & Co. LLC

CLOSED

Shares0 from 4,398,000

Change-4,398,000 (-100%)

Value$0 (-$6.3K)

Filed 2025-02-14

Morgan Stanley

CLOSED

Shares0 from 326,000

Change-326,000 (-100%)

Value$0 (-$464.0K)

Filed 2025-05-15

Barclays PLC

CLOSED

Shares0 from 265,000

Change-265,000 (-100%)

Value$0 (-$377.8K)

Filed 2026-03-19

Proequities, Inc.

UNCHANGED

Shares0 from 0

Change0

Value$0 ($0)

Filed 2025-02-13

Crystalline Management Inc.

N/A

Shares— from 5,500,000

Change-5,500,000 (-100%)

Value—

Raymond James & Associates

N/A

Shares— from 14,000

Change-14,000 (-100%)

Value—

	Status
Calamos Advisors LLC	INCREASED	29,443,000	10,000,000	+19,443,000	+194%	$14.3M	$45.9M	+$31.6M	2025-01-24
Alberta Investment Management Corp	UNCHANGED	22,500,000	22,500,000	0	0%	$32.3M	$35.1M	+$2.8M	2025-02-03
Capstone Investment Advisors, LLC	UNCHANGED	16,000,000	16,000,000	0	0%	$22.9M	$24.9M	+$2.1M	2025-02-14
Parallax Volatility Advisers, L.P.	UNCHANGED	10,000,000	10,000,000	0	0%	$14.2M	$15.5M	+$1.3M	2025-02-14
FMR LLC	INCREASED	8,080,000	7,590,000	+490,000	+6%	$10.8M	$12.6M	+$1.8M	2026-11-05
Absolute Investment Advisers, LLC	UNCHANGED	8,041,000	8,041,000	0	0%	$11.5M	$12.5M	+$1.0M	2025-01-24
Bank of Montreal	INCREASED	7,500,000	5,000,000	+2,500,000	+50%	$7.2M	$11.7M	+$4.5M	2025-02-13
JPMorgan Chase & Co	INCREASED	6,206,000	53,000	+6,153,000	+11609%	$76.2K	$9.6M	+$9.6M	2025-02-12
Man Group plc	DECREASED	5,617,000	15,617,000	-10,000,000	-64%	$22.4M	$8.8M	-$13.6M	2025-02-14
Daiwa Securities Group Inc.	NEW	5,000,000	—	+5,000,000	—	—	$7.8K	—	2025-02-07
Shenkman Capital Management Inc	DECREASED	4,260,000	7,390,000	-3,130,000	-42%	$10.8M	$6.9M	-$3.9M	2025-02-10
AQR Arbitrage LLC	NEW	3,000,000	—	+3,000,000	—	—	$4.7M	—	2025-02-14
Aristeia Capital, L.L.C.	DECREASED	3,000,000	4,000,000	-1,000,000	-25%	$5.7M	$4.7M	-$1.0M	2025-02-14
Linden Advisors LP	UNCHANGED	2,313,000	2,313,000	0	0%	$3.3M	$3.6M	+$298.3K	2025-02-14
Zazove Associates LLC	UNCHANGED	1,250,000	1,250,000	0	0%	$1.8M	$1.9M	+$161.9K	2025-02-13
Bank of America Corp	NEW	875,000	—	+875,000	—	—	$1.4M	—	2025-02-14
AGF Management LTD	UNCHANGED	850,000	850,000	0	0%	$1.2M	$1.3M	+$110.9K	2025-02-07
Bank of New York Mellon Corp	UNCHANGED	150,000	150,000	0	0%	$215.6K	$233.7K	+$18.1K	2025-02-04
Lake Street Advisors Group, LLC	UNCHANGED	97,000	97,000	0	0%	$138.1K	$150.7K	+$12.7K	2025-02-04
Boussard & Gavaudan Investment Management LLP	UNCHANGED	17,876	17,876	0	0%	$25.5M	$27.8M	+$2.3M	2025-02-12
Arkadios Wealth Advisors	UNCHANGED	16,000	16,000	0	0%	$22.8K	$24.9K	+$2.1K	2025-01-15
Raymond James Financial Inc	NEW	13,000	—	+13,000	—	—	$20.2K	—	2025-04-23
CSS LLC	NEW	11,000	—	+11,000	—	—	$17.1K	—	2025-02-18
Camden Asset Management L P	CLOSED	0	19,960,000	-19,960,000	-100%	$28.4M	$0	-$28.4M	2025-02-13
Citadel Advisors LLC	CLOSED	0	15,000,000	-15,000,000	-100%	$21.4M	$0	-$21.4M	2025-02-14
Readystate Asset Management LP	CLOSED	0	14,750,000	-14,750,000	-100%	$21.1M	$0	-$21.1M	2025-02-14
Lord, Abbett & Co. LLC	CLOSED	0	4,398,000	-4,398,000	-100%	$6.3K	$0	-$6.3K	2025-02-14
Morgan Stanley	CLOSED	0	326,000	-326,000	-100%	$464.0K	$0	-$464.0K	2025-05-15
Barclays PLC	CLOSED	0	265,000	-265,000	-100%	$377.8K	$0	-$377.8K	2026-03-19
Proequities, Inc.	UNCHANGED	0	0	0	—	$0	$0	$0	2025-02-13
Crystalline Management Inc.	N/A	—	5,500,000	-5,500,000	-100%	$7.9M	—	—	—
Raymond James & Associates	N/A	—	14,000	-14,000	-100%	$19.9K	—	—	—

Showing 32 of 32 institutions