There is a long list of 123 institutional holders of AMPS within the last two holding periods in our database of 13F filers, so we've sorted through to present to you just the top 50 institutional holders of AMPS by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-AMPS table below, the initial column indicates the name of each top institutional holder of AMPS, with a link to that fund's top holdings. The next columns indicate the amount of AMPS stock held by each of the institutional holders of AMPS, followed by the AMPS position size held by the institution, and finally the date of the quarterly 13F filing period the holdings data represents for that institution.

Holder	Amount	Position Size ($ in 1000's)	As of
Blackstone Group Inc	21,116,125	$144,223	12/31/2023
AMPS	21,116,125	$144,223	12/31/2023
BlackRock Inc.	6,976,946	$33,350	03/31/2024
AMPS	6,976,946	$33,350	03/31/2024
J. Goldman & Co LP		$28,907	12/31/2023
AMPS	2,972,290	$20,301	12/31/2023
Call	1,260,000	$8,606	12/31/2023
Encompass Capital Advisors LLC	3,475,350	$23,737	12/31/2023
AMPS	3,475,350	$23,737	12/31/2023
Invesco Ltd.	3,065,219	$20,935	12/31/2023
AMPS	3,065,219	$20,935	12/31/2023
Liberty Mutual Group Asset Management Inc.	3,000,000	$20,490	12/31/2023
AMPS	3,000,000	$20,490	12/31/2023
State Street Corp	2,991,818	$20,434	12/31/2023
AMPS	2,991,818	$20,434	12/31/2023
Robecosam AG	4,000,000	$19,120	03/31/2024
AMPS	4,000,000	$19,120	03/31/2024
Vanguard Group Inc.	3,582,729	$17,125	03/31/2024
AMPS	3,582,729	$17,125	03/31/2024
Ardsley Advisory Partners LP	1,517,500	$10,365	12/31/2023
AMPS	1,517,500	$10,365	12/31/2023
Dimensional Fund Advisors LP	2,167,198	$10,359	03/31/2024
AMPS	2,167,198	$10,359	03/31/2024
Morgan Stanley	1,351,861	$9,233	12/31/2023
AMPS	1,351,861	$9,233	12/31/2023
CenterBook Partners LP	1,745,893	$8,345	03/31/2024
AMPS	1,745,893	$8,345	03/31/2024
Kensico Capital Management Corp	1,015,200	$6,934	12/31/2023
AMPS	1,015,200	$6,934	12/31/2023
Geode Capital Management LLC	1,421,993	$6,798	03/31/2024
AMPS	1,421,993	$6,798	03/31/2024
Telemark Asset Management LLC	1,200,000	$5,736	03/31/2024
AMPS	1,200,000	$5,736	03/31/2024
Decade Renewable Partners LP	735,755	$5,025	12/31/2023
AMPS	735,755	$5,025	12/31/2023
CIBC Private Wealth Group LLC	1,008,368	$4,870	03/31/2024
AMPS	1,008,368	$4,870	03/31/2024
Northern Trust Corp	566,193	$3,867	12/31/2023
AMPS	566,193	$3,867	12/31/2023
Standard Life Aberdeen plc	769,300	$3,677	03/31/2024
AMPS	769,300	$3,677	03/31/2024
Handelsbanken Fonder AB	705,981	$3,375	03/31/2024
AMPS	705,981	$3,375	03/31/2024
Skandinaviska Enskilda Banken AB publ	665,232	$3,180	03/31/2024
AMPS	665,232	$3,180	03/31/2024
Citadel Advisors LLC		$3,165	12/31/2023
AMPS	321,808	$2,198	12/31/2023
Call	143,900	$983	12/31/2023
Put	2,300	$16	12/31/2023
First Trust Advisors LP	635,000	$3,035	03/31/2024
AMPS	635,000	$3,035	03/31/2024
Goldman Sachs Group Inc.	389,111	$2,658	12/31/2023
AMPS	389,111	$2,658	12/31/2023
Charles Schwab Investment Management Inc.	502,175	$2,400	03/31/2024
AMPS	502,175	$2,400	03/31/2024
Bank of America Corp DE	343,018	$2,343	12/31/2023
AMPS	343,018	$2,343	12/31/2023
DekaBank Deutsche Girozentrale	485,950	$2,268	03/31/2024
AMPS	485,950	$2,268	03/31/2024
Yaupon Capital Management LP	306,775	$2,095	12/31/2023
AMPS	306,775	$2,095	12/31/2023
Edmond DE Rothschild Holding S.A.	428,963	$2,050	03/31/2024
AMPS	428,963	$2,050	03/31/2024
LMR Partners LLP	300,000	$2,049	12/31/2023
AMPS	300,000	$2,049	12/31/2023
Squarepoint Ops LLC	285,435	$1,950	12/31/2023
AMPS	285,435	$1,950	12/31/2023
Susquehanna International Group LLP		$1,772	03/31/2024
Call	210,200	$1,005	03/31/2024
AMPS	199,937	$956	03/31/2024
Put	39,500	$189	03/31/2024
Bouvel Investment Partners LLC	305,673	$1,461	03/31/2024
AMPS	305,673	$1,461	03/31/2024
Healthcare of Ontario Pension Plan Trust Fund	259,441	$1,240	03/31/2024
AMPS	259,441	$1,240	03/31/2024
Alps Advisors Inc.	179,531	$1,226	12/31/2023
AMPS	179,531	$1,226	12/31/2023
Davy Global Fund Management Ltd	244,599	$1,169	03/31/2024
AMPS	244,599	$1,169	03/31/2024
Nuveen Asset Management LLC	209,628	$1,002	03/31/2024
AMPS	209,628	$1,002	03/31/2024
Marshall Wace LLP	144,992	$990	12/31/2023
AMPS	144,992	$990	12/31/2023
Bank of New York Mellon Corp	193,847	$927	03/31/2024
AMPS	193,847	$927	03/31/2024
UBS Asset Management Americas Inc.	124,299	$849	12/31/2023
AMPS	124,299	$849	12/31/2023
JPMorgan Chase & Co.	174,537	$834	03/31/2024
AMPS	174,537	$834	03/31/2024
Jane Street Group LLC		$761	12/31/2023
AMPS	98,764	$675	12/31/2023
Call	12,600	$86	12/31/2023
State of Wisconsin Investment Board	111,028	$758	12/31/2023
AMPS	111,028	$758	12/31/2023
Long Focus Capital Management LLC	104,081	$711	12/31/2023
AMPS	104,081	$711	12/31/2023
Barclays PLC	100,483	$685	12/31/2023
AMPS	100,483	$685	12/31/2023
DAVENPORT & Co LLC	130,410	$623	03/31/2024
AMPS	130,410	$623	03/31/2024
Moore Capital Management LP	90,000	$615	12/31/2023
AMPS	90,000	$615	12/31/2023
Swiss National Bank	125,300	$599	03/31/2024
AMPS	125,300	$599	03/31/2024
Rhumbline Advisers	125,058	$598	03/31/2024
AMPS	125,058	$598	03/31/2024