AMPRIUS TECHNOLOGIES INC

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AMPX·03214Q108·US·Common Stock·Industrials - Electrical Equipment & Parts-13D/G

AMPX (AMPRIUS TECHNOLOGIES INC) is held by 132 institutional investors as of Q1 2026. Largest holders: BlackRock, Inc. ($155.5M), VANGUARD CAPITAL MANAGEMENT LLC ($82.8M), JANE STREET GROUP, LLC ($70.1M). Net institutional sentiment: Bullish.

132

Holders

(11 Elite)

$1.2B

Total Value

70% (138)

Consensus

97 buying - 41 selling

13F: Mar 31, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)

Insider (Form 4)

Activist (13D/13G)

Congressional (STOCK Act)

Holder Quality

★★★★★

Elite

★★★★

Strong

★★★

Solid

★★

Below

★

Weak

Held by 132 funds

11 elite

Who's Trading

InsiderSMStepien Thomas MSell $42KJun 4, 2026

InsiderSKSun KangVest 6K shMay 5, 2026

ActivistJANE STREET GROUP, LLC5.1%Apr 28, 2026

InsiderSKSun KangSell $19.7MApr 1, 2026

InsiderSKSun KangSell $4.2MApr 1, 2026

ActivistThe Vanguard Group0.0%Mar 26, 2026

InsiderSKSun KangSell $2.9MMar 23, 2026

InsiderSKSun KangSell $1.2MMar 23, 2026

InsiderHHHSIEH Wen HsuanSell $5.2MMar 12, 2026

InsiderHHHSIEH Wen HsuanSell $2.4MMar 12, 2026

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Top Holders (132)History

AllNewIncreasedHeldDecreasedExited

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Increased	9.2M(+4.5%)	$155.5M	0.0%	+80.60%	32
VAVANGUARD CAPITAL MANAGEMENT LLC	New	4.9M	$82.8M	0.0%	-0.86%	41
JANE STREET GROUP, LLC	Increased	4.2M(+1849.5%)	$70.1M	0.0%	-0.33%	48
DRIEHAUS CAPITAL MANAGEMENT LLC	Increased	3.8M(+58.5%)	$64M	0.5%	+4.59%	50
TWO SIGMA INVESTMENTS, LP	Increased	3.5M(+144.0%)	$59.1M	0.0%	+29.33%	48
MORGAN STANLEY	Increased	3.2M(+12.5%)	$53.3M	0.0%	+76.11%	33
GEODE CAPITAL MANAGEMENT, LLC	Increased	2.8M(+5.1%)	$47.5M	0.0%	+74.25%	31
STATE STREET CORP	Increased	2.7M(+6.2%)	$45.7M	0.0%	+57.37%	31
UBS Group AG	Increased	2.3M(+10.1%)	$39M	0.0%	+52.21%	32
GOLDMAN SACHS GROUP INC	Increased	2.2M(+1.4%)	$37.5M	0.0%	+36.81%	29
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	New	2M	$34.1M	0.0%	-0.86%	40
PRICE T ROWE ASSOCIATES INC /MD/	Increased	1.9M(+2254.8%)	$32M	0.0%	+1.40%	47
Baird Financial Group, Inc.	Increased	1.6M(+104.9%)	$26.7M	0.0%	+51.04%	46
CITADEL ADVISORS LLC	Increased	1.4M(+216.3%)	$24.3M	0.0%	+3.98%	46
MWMARSHALL WACE, LLP	New	1.2M	$20.7M	0.0%	-0.86%	39
Qube Research & Technologies Ltd	Increased	1.2M(+40.4%)	$20.7M	0.0%	+29.20%	38
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	Increased	1.2M(+18.8%)	$19.7M	0.1%	+36.75%	33
DED. E. Shaw & Co., Inc.	New	1.1M	$18.1M	0.0%	-0.86%	39
VPVANGUARD PORTFOLIO MANAGEMENT LLC	New	1.1M	$18.1M	0.0%	-0.86%	39
JPMORGAN CHASE & CO	Increased	1.2M(+1357.4%)	$17.9M	0.0%	+3.77%	46

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