There is a long list of 113 institutional holders of AMPY 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 AMPY by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-AMPY table below, the initial column indicates the name of each top institutional holder of AMPY, with a link to that fund's top holdings. The next columns indicate the amount of AMPY stock held by each of the institutional holders of AMPY, followed by the AMPY 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
BlackRock Inc.	2,515,369	$14,916	12/31/2023
AMPY	2,515,369	$14,916	12/31/2023
Vanguard Group Inc.	2,264,005	$13,426	12/31/2023
AMPY	2,264,005	$13,426	12/31/2023
Dimensional Fund Advisors LP	1,752,004	$10,390	12/31/2023
AMPY	1,752,004	$10,390	12/31/2023
Bridgeway Capital Management Inc.	1,038,922	$6,161	12/31/2023
AMPY	1,038,922	$6,161	12/31/2023
Susquehanna International Group LLP		$4,654	12/31/2023
Call	614,000	$3,641	12/31/2023
AMPY	189,944	$1,126	12/31/2023
Put	19,000	$113	12/31/2023
Geode Capital Management LLC	769,239	$4,562	12/31/2023
AMPY	769,239	$4,562	12/31/2023
State Street Corp	736,284	$4,366	12/31/2023
AMPY	736,284	$4,366	12/31/2023
AQR Capital Management LLC	726,071	$4,306	12/31/2023
AMPY	726,071	$4,306	12/31/2023
Foundry Partners LLC	575,055	$3,410	12/31/2023
AMPY	575,055	$3,410	12/31/2023
Acadian Asset Management LLC	573,293	$3,398	12/31/2023
AMPY	573,293	$3,398	12/31/2023
Prudential Financial Inc.	493,150	$2,924	12/31/2023
AMPY	493,150	$2,924	12/31/2023
Group One Trading L.P.		$2,838	12/31/2023
Call	466,100	$2,764	12/31/2023
AMPY	144,684	$858	12/31/2023
Put	132,200	$784	12/31/2023
Renaissance Technologies LLC	412,300	$2,445	12/31/2023
AMPY	412,300	$2,445	12/31/2023
Bank of New York Mellon Corp	410,505	$2,434	12/31/2023
AMPY	410,505	$2,434	12/31/2023
Morgan Stanley	395,013	$2,342	12/31/2023
AMPY	395,013	$2,342	12/31/2023
Northern Trust Corp	362,621	$2,150	12/31/2023
AMPY	362,621	$2,150	12/31/2023
Citadel Advisors LLC		$1,790	12/31/2023
Call	378,600	$2,245	12/31/2023
Put	76,700	$455	12/31/2023
Panagora Asset Management Inc.	289,366	$1,716	12/31/2023
AMPY	289,366	$1,716	12/31/2023
Yacktman Asset Management LP	235,000	$1,394	12/31/2023
AMPY	235,000	$1,394	12/31/2023
First Trust Advisors LP	220,340	$1,307	12/31/2023
AMPY	220,340	$1,307	12/31/2023
Simplex Trading LLC		$1,156	12/31/2023
AMPY	207,737	$1,231	12/31/2023
Put	107,300	$636	12/31/2023
Call	94,700	$561	12/31/2023
Rhumbline Advisers	132,612	$786	12/31/2023
AMPY	132,612	$786	12/31/2023
Connor Clark & Lunn Investment Management Ltd.	129,318	$767	12/31/2023
AMPY	129,318	$767	12/31/2023
Empowered Funds LLC	120,722	$716	12/31/2023
AMPY	120,722	$716	12/31/2023
Martingale Asset Management L P	120,341	$714	12/31/2023
AMPY	120,341	$714	12/31/2023
Federated Hermes Inc.	117,853	$699	12/31/2023
AMPY	117,853	$699	12/31/2023
Charles Schwab Investment Management Inc.	99,303	$589	12/31/2023
AMPY	99,303	$589	12/31/2023
Wolverine Trading LLC		$587	12/31/2023
AMPY	94,894	$563	12/31/2023
Call	26,100	$155	12/31/2023
Put	22,100	$131	12/31/2023
Dalton Investments LLC	89,410	$530	12/31/2023
AMPY	89,410	$530	12/31/2023
Jane Street Group LLC		$512	12/31/2023
Call	50,400	$299	12/31/2023
AMPY	35,860	$213	12/31/2023
PPM America Inc. IL	83,213	$493	12/31/2023
AMPY	83,213	$493	12/31/2023
Marshall Wace LLP	79,100	$469	12/31/2023
AMPY	79,100	$469	12/31/2023
Janney Montgomery Scott LLC	77,368	$459	12/31/2023
AMPY	77,368	$459	12/31/2023
Nuveen Asset Management LLC	73,428	$435	12/31/2023
AMPY	73,428	$435	12/31/2023
New York State Common Retirement Fund	72,128	$428	12/31/2023
AMPY	72,128	$428	12/31/2023
WINTON GROUP Ltd	69,155	$410	12/31/2023
AMPY	69,155	$410	12/31/2023
Two Sigma Investments LP	61,080	$362	12/31/2023
AMPY	61,080	$362	12/31/2023
Putnam Investments LLC	52,579	$312	12/31/2023
AMPY	52,579	$312	12/31/2023
ARS Investment Partners LLC	51,000	$302	12/31/2023
AMPY	51,000	$302	12/31/2023
Balyasny Asset Management LLC	50,592	$300	12/31/2023
AMPY	50,592	$300	12/31/2023
State of Wyoming	50,517	$300	12/31/2023
AMPY	50,517	$300	12/31/2023
Barclays PLC	49,917	$296	12/31/2023
AMPY	49,917	$296	12/31/2023
JPMorgan Chase & Co.	49,337	$293	12/31/2023
AMPY	49,337	$293	12/31/2023
Goldman Sachs Group Inc.	49,168	$292	12/31/2023
AMPY	49,168	$292	12/31/2023
UBS Group AG	49,190	$292	12/31/2023
AMPY	49,190	$292	12/31/2023
Intrust Bank NA	40,901	$243	12/31/2023
AMPY	40,901	$243	12/31/2023
XTX Topco Ltd	39,397	$234	12/31/2023
AMPY	39,397	$234	12/31/2023
Alliancebernstein L.P.	36,600	$217	12/31/2023
AMPY	36,600	$217	12/31/2023
American Century Companies Inc.	36,474	$216	12/31/2023
AMPY	36,474	$216	12/31/2023
Graham Capital Management L.P.	36,371	$216	12/31/2023
AMPY	36,371	$216	12/31/2023

See All: Funds Holding AMPY
See Details: Top 10 Hedge Funds Holding AMPY
Also See: AMPY Insider Buying
Also See: AMPY Holdings Changes

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