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Disclosery

AMPX AMPRIUS TECHNOLOGIES INC

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Stock (common), issuer CIK 1899287

236 managers (245 13F filers) reported a position in AMPX shares at 2026-03-31, 84,628,866 shares in all. 73 filers opened a position and 36 filers sold out during the quarter.

Managers
236
13F filers
245
New
73
Added
94
Reduced
57
Sold out
36
Shares held by filers
84,628,866

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.9,225,611$156M<0.01%+401,83213F-HRTimelineGroup
VANGUARD GROUP INCgroup of 7 filers holding7,066,863$119M+7,048,907Timeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC4,160,656$70.1M0.08%+3,947,23113F-HRTimelineGroup
Driehaus Capital Management LLC3,794,178$64M0.47%+1,400,96613F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP3,506,075$59.1M0.05%+2,069,13613F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY3,162,167$53.3M<0.01%+352,34613F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC2,814,530$47.5M<0.01%+136,11313F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP2,712,630$45.7M<0.01%+158,92013F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding2,536,778$42.8M+248,988Timeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC2,226,181$37.5M<0.01%+31,34013F-HRTimelineGroup
MASSACHUSETTS FINANCIAL SERVICES CO /MA/in group MASSACHUSETTS FINANCIAL SERVI…2,024,760$34.1M0.01%new13F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/1,897,420$32M<0.01%+1,816,84213F-HRTimeline
Baird Financial Group, Inc.in group Baird Financial Group, Inc.1,585,098$26.7M0.04%+811,67013F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC1,438,660$24.3M0.02%+983,80613F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP1,227,599$20.7M0.02%new13F-HRTimelineGroup
Qube Research & Technologies Ltd1,227,570$20.7M0.03%+353,49013F-HRTimeline
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC1,170,131$19.7M0.07%+185,22513F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.1,075,386$18.1M0.01%new13F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO1,216,185$17.9M<0.01%+1,132,73613F-HR/ATimelineGroup
BARCLAYS PLCin group BARCLAYS PLC1,054,927$17.8M0.01%+585,02113F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co1,039,394$17.5M<0.01%+2,50313F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC1,035,238$17.5M0.01%-50,03213F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP1,022,625$17.2M<0.01%+59,45413F-HRTimelineGroup
HRT FINANCIAL LP1,002,658$16.9M0.04%new13F-HRTimeline
Hood River Capital Management LLC949,147$16M0.16%+139,40313F-HRTimeline
Stephens Investment Management Group LLCgroup of 2 filers holding922,003$15.5M-548,922Timeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\875,031$14.8M<0.01%-1,079,98713F-HRTimelineGroup
Wolf Hill Capital Management, LPin group Wolf Hill Capital Management,…802,925$13.5M1.92%new13F-HRTimelineGroup
MYDA Advisors LLC735,000$12.4M2.93%new13F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP733,172$12.4M0.01%-38,33713F-HRTimelineGroup
Trexquant Investment LP716,257$12.1M0.09%+685,24713F-HRTimeline
Science & Technology Partners, L.P.635,106$10.7M2.8%new13F-HRTimeline
OBERWEIS ASSET MANAGEMENT INC/585,000$9.86M0.29%new13F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO579,161$9.76M0.01%+147,37513F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…543,463$9.16M0.01%+308,44413F-HRTimelineGroup
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding537,158$9.06M-9,820Timeline
VOLORIDGE INVESTMENT MANAGEMENT, LLC531,998$8.97M0.04%-1,070,00313F-HRTimeline
THAMES CAPITAL MANAGEMENT LLC526,832$8.88M1.59%013F-HRTimeline
Invesco Ltd.in group Invesco Ltd.498,804$8.41M<0.01%-813,11113F-HRTimelineGroup
ESSEX INVESTMENT MANAGEMENT CO LLC445,441$7.51M1.19%-71,32413F-HRTimeline
SG Americas Securities, LLC423,037$7.13M0.01%+167,78513F-HRTimeline
POLEN CAPITAL MANAGEMENT LLC422,145$7.12M0.05%+133,85513F-HRTimeline
TUDOR INVESTMENT CORP ET AL419,661$7.08M0.04%new13F-HRTimeline
OPPENHEIMER & CO INCin group OPPENHEIMER ASSET MANAGEMENT …412,509$6.95M0.08%-29,58113F-HRTimelineGroup
Allspring Global Investments Holdings, …in group Allspring Global Investments …431,398$6.7M0.01%+377,48513F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP394,569$6.65M<0.01%+361,82513F-HRTimelineGroup
Palisades Investment Partners, LLC369,476$6.23M2.44%new13F-HRTimeline
Calamos Advisors LLCin group Calamos Advisors LLC364,506$6.15M0.02%+245,47313F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC359,525$6.06M0.01%+246,70013F-HRTimeline
Lisanti Capital Growth, LLC352,375$5.94M1.5%+153,48513F-HRTimeline
Public Sector Pension Investment Board332,000$5.6M0.02%new13F-HRTimeline
SILVERCREST ASSET MANAGEMENT GROUP LLC319,879$5.39M0.04%-39,50713F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp298,865$5.04M<0.01%-10,84913F-HRTimelineGroup
Voleon Capital Management LP298,354$5.03M0.11%+107,18413F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS286,546$4.83M<0.01%-420,53313F-HRTimelineGroup
Aquatic Capital Management LLC282,663$4.77M0.14%+256,44513F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/265,418$4.47M<0.01%-34,50813F-HRTimelineGroup
Informed Momentum Co LLC262,036$4.42M0.51%+25,22613F-HRTimeline
Nuveen, LLCin group TIAA243,895$4.11M<0.01%+10,73613F-HRTimelineGroup
ZEVENBERGEN CAPITAL INVESTMENTS LLC236,875$3.99M0.11%new13F-HRTimeline
Swiss National Bank232,400$3.92M<0.01%+10,40013F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC232,109$3.91M0.01%+14,06313F-HRTimelineGroup
Legato Capital Management LLC228,498$3.85M0.35%+23,85113F-HRTimeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …227,132$3.83M<0.01%new13F-HRTimelineGroup
ALGERT GLOBAL LLC215,315$3.63M0.05%+82,66513F-HR/ATimeline
Sender Co & Partners, Inc.179,243$3.02M2.21%new13F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.169,753$2.86M<0.01%-116,90513F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.169,492$2.86M<0.01%+160,82213F-HRTimelineGroup
ALPS ADVISORS INCin group ALPS ADVISORS INC167,420$2.82M0.01%+20,35813F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND165,627$2.79M<0.01%+135,99013F-HRTimeline
Amundiin group Amundi164,589$2.77M<0.01%+24,28313F-HRTimelineGroup
Y-Intercept (Hong Kong) Ltd164,224$2.77M0.05%new13F-HRTimeline
Huntleigh Advisors, Inc.162,905$2.75M0.47%+2,30613F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…159,903$2.7M<0.01%+51,97313F-HRTimeline
DNB Asset Management ASin group DNB Asset Management AS153,032$2.58M0.01%new13F-HRTimelineGroup
HUSSMAN STRATEGIC ADVISORS, INC.147,000$2.48M0.54%-63,00013F-HRTimeline
Janney Montgomery Scott LLC145,246$2.45M0.01%-23,23413F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC137,726$2.32M<0.01%+1,62713F-HRTimelineGroup
Schonfeld Strategic Advisors LLC135,774$2.29M0.02%new13F-HRTimeline
LPL Financial LLC134,781$2.27M<0.01%+20,07513F-HRTimeline
RHUMBLINE ADVISERS132,093$2.23M<0.01%+6,93913F-HRTimeline
BLAIR WILLIAM & CO/IL126,622$2.13M0.01%+86,47013F-HRTimeline
ARDSLEY ADVISORY PARTNERS LP125,000$2.11M0.32%new13F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC122,294$2.06M<0.01%-102,13213F-HRTimelineGroup
CenterBook Partners LP118,257$1.99M0.11%new13F-HRTimeline
Apis Capital Advisors, LLC108,000$1.82M0.28%new13F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA101,914$1.72M<0.01%+9,99813F-HRTimelineGroup
Foundations Investment Advisors, LLC101,893$1.72M0.02%-22,24113F-HRTimeline
SLT Holdings LLC101,050$1.7M1.2%-22,25013F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd99,351$1.68M0.03%new13F-HRTimelineGroup
Quantbot Technologies LP96,604$1.63M0.07%new13F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources93,996$1.58M<0.01%+15,15913F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN91,913$1.55M<0.01%-50,44213F-HR/ATimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…89,170$1.5M<0.01%-1,602,33013F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc86,857$1.46M<0.01%-15,30413F-HRTimelineGroup
Alberta Investment Management Corp82,000$1.38M0.01%-44,90013F-HRTimeline
OCCUDO QUANTITATIVE STRATEGIES LP65,508$1.38M0.08%new13F-HRTimeline
TWINBEECH CAPITAL LP76,000$1.28M0.13%new13F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC73,064$1.23M0.03%-39,26013F-HRTimeline
Hel Ved Capital Management Ltd71,850$1.21M0.21%new13F-HRTimeline
Engineers Gate Manager LP70,652$1.19M0.01%-289,74913F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…62,845$1.06M0.01%+2,33213F-HRTimelineGroup
IMC-Chicago, LLC62,679$1.06M0.02%new13F-HRTimeline
AXQ CAPITAL, LP60,865$1.03M0.13%+39,69113F-HRTimeline
AlphaCentric Advisors LLC60,000$1.01M1.01%+10,00013F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC60,184$993K<0.01%-17,82513F-HR/ATimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …58,790$991K<0.01%+25,51013F-HRTimelineGroup
FLPUTNAM INVESTMENT MANAGEMENT CO56,604$954K0.01%new13F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson52,803$889K<0.01%+13,75013F-HR/ATimelineGroup
GSA CAPITAL PARTNERS LLP52,564$886K0.06%-44,13113F-HRTimeline
Parallax Volatility Advisers, L.P.40,777$874K0.04%new13F-HRTimeline
ALLIANCEBERNSTEIN L.P.108,260$854K<0.01%-15,60013F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…50,133$845K<0.01%+7,64613F-HRTimeline
KINGSWOOD WEALTH ADVISORS, LLC48,705$821K0.04%+1,00013F-HRTimeline
Qsemble Capital Management, LP47,333$798K0.06%new13F-HRTimeline
Focus Partners Wealthin group Focus Partners Wealth45,474$767K<0.01%+23,43213F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC45,332$764K<0.01%+25,96213F-HRTimelineGroup
Vident Advisory, LLCin group Vident Advisory, LLC44,168$745K0.01%+30,60413F-HRTimelineGroup
B. Riley Wealth Advisors, Inc.50,200$739K0.05%013F-HRTimeline
Harbour Capital Advisors, LLC31,480$714K0.14%new13F-HRTimeline
FORA Capital, LLC41,598$700K0.05%+2,67013F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC41,333$697K<0.01%013F-HRTimelineGroup
Richmond Investment Services, LLC39,994$674K0.11%+29,13613F-HRTimeline
Marex Group Ltdin group Marex Group Ltd39,708$669K0.01%new13F-HRTimelineGroup
Cambridge Investment Research Advisors,…39,689$669K<0.01%new13F-HRTimeline
Gotham Asset Management, LLC39,517$666K<0.01%new13F-HRTimeline
Creative Planningin group Creative Planning37,336$629K<0.01%+12,57513F-HRTimelineGroup
KLP KAPITALFORVALTNING AS35,900$605K<0.01%013F-HRTimeline
HITE Hedge Asset Management LLC35,313$595K0.03%-22,48913F-HRTimeline
Counterpoint Mutual Funds LLC32,490$548K0.08%-55013F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM32,284$544K<0.01%+1,22213F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC32,020$540K0.01%-19,09113F-HRTimeline
Police & Firemen's Retirement System of…31,588$533K<0.01%+1,98213F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…31,308$528K0.01%new13F-HRTimelineGroup
Inspire Investing, LLCin group Inspire Investing, LLC31,051$524K0.03%-29,19113F-HRTimelineGroup
CORNERSTONE PARTNERS CAPITAL MANAGEMENT…30,706$518K1.29%013F-HRTimeline
Sigma Planning Corp30,285$511K0.01%new13F-HRTimeline
Polymer Capital Management (US) LLC28,128$474K0.07%new13F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC28,095$474K<0.01%+12,08613F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.27,921$471K<0.01%-465,94113F-HRTimelineGroup
Advisory Services Network, LLC27,920$471K0.01%-3,58713F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC27,674$467K<0.01%+6,09713F-HRTimeline
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC25,382$428K<0.01%new13F-HRTimelineGroup
Headlands Technologies LLC24,635$415K0.05%new13F-HRTimeline
Caitong International Asset Management …23,809$401K0.07%+15,44713F-HRTimeline
Swiss Life Asset Management Ltdin group Swiss Life Asset Management L…11,164$389K<0.01%new13F-HRTimelineGroup
Cetera Investment Advisers22,775$384K<0.01%-7,94713F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…21,040$355K<0.01%new13F-HRTimeline
FNY Investment Advisers, LLC20,757$349K0.15%new13F-HRTimeline
Tidal Investments LLCin group Tidal Investments LLC20,632$348K<0.01%-46713F-HRTimelineGroup
Jain Global LLC19,686$332K<0.01%new13F-HRTimeline
EWA, LLC19,551$330K0.07%-40713F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC17,890$302K<0.01%-23,35013F-HRTimelineGroup
LANARK FINANCIAL, INC.17,635$297K0.02%+2,06513F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC17,464$294K<0.01%-18,22913F-HRTimeline
Scientech Research LLC17,359$293K0.24%+4,54913F-HRTimeline
Geneos Wealth Management Inc.17,140$289K0.01%+6,49013F-HRTimeline
Verition Fund Management LLC17,045$287K<0.01%-275,05213F-HRTimeline
ProShare Advisors LLC16,695$281K<0.01%-3,46413F-HRTimeline
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…16,099$271K<0.01%013F-HRTimelineGroup
Corient Private Wealth LPin group Corient Private Wealth LP15,999$270K<0.01%new13F-HRTimelineGroup
Pekin Hardy Strauss, Inc.15,100$255K0.03%new13F-HRTimeline
Quantinno Capital Management LP14,049$237K<0.01%new13F-HRTimeline
Graham Capital Management, L.P.13,768$232K0.01%-35,82813F-HRTimeline
Hidden Cove Wealth Management, LLC13,694$231K0.15%new13F-HRTimeline
Bridgefront Capital, LLC13,571$229K0.06%-7,03813F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC13,361$225K<0.01%+54413F-HRTimeline
NICOLET BANKSHARES INCin group NICOLET BANKSHARES INC13,305$224K0.01%new13F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC13,255$223K<0.01%-61,50913F-HRTimelineGroup
EARNED WEALTH ADVISORS, LLC13,234$223K0.01%-74013F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…13,205$223K0.01%+11,77513F-HRTimelineGroup
&PARTNERS13,012$219K<0.01%new13F-HRTimeline
FMR LLCin group FMR LLC12,350$208K<0.01%+3,36513F-HRTimelineGroup
Bayforest Capital Ltd11,477$194K0.22%-25,40513F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD11,462$193K<0.01%new13F-HRTimeline
Wealthfront Advisers LLC11,061$186K<0.01%-3,29113F-HRTimeline
HighTower Advisors, LLC11,013$186K<0.01%-3,01813F-HRTimeline
XPONANCE LLC10,702$180K<0.01%new13F-HRTimeline
Joel Isaacson & Co., LLC10,000$169K0.01%new13F-HRTimeline
MITCHELL & PAHL PRIVATE WEALTH, LLC10,000$169K0.07%new13F-HRTimeline
Cambridge Financial Group, LLC10,000$169K0.06%013F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…9,425$159K<0.01%+46413F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP9,692$156K<0.01%+17413F-HRTimelineGroup
Central Pacific Bank - Trust Division7,000$118K0.02%new13F-HRTimeline
State of Wyoming6,041$102K0.01%+3,67413F-HRTimeline
Leonteq Securities AG6,000$101K0.01%013F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC5,214$87K<0.01%+1,54513F-HRTimelineGroup
MAI Capital Management4,803$81K<0.01%new13F-HRTimeline
NISA INVESTMENT ADVISORS, LLC4,582$77.3K<0.01%+3,40013F-HRTimeline
CWM, LLCin group CWM, LLC4,186$70.6K<0.01%-31113F-HRTimelineGroup
Larson Financial Group LLC4,086$68.9K<0.01%+4,07113F-HRTimeline
Parallel Advisors, LLC4,002$67.5K<0.01%-1,11913F-HR/ATimeline
KBC Group NVin group KBC Group NV3,399$57K<0.01%new13F-HRTimelineGroup
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …2,224$37.5K<0.01%+60413F-HRTimelineGroup
Farther Finance Advisors, LLC2,193$34K<0.01%+2,01513F-HRTimeline
EASTERN BANK2,000$33.7K<0.01%013F-HRTimeline
DHJJ Financial Advisors, Ltd.2,000$33.7K0.01%013F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…1,971$33.2K<0.01%+48413F-HRTimelineGroup
Bank of New Hampshire1,793$30.2K0.01%new13F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…1,751$29.5K<0.01%+1,37513F-HRTimelineGroup