Sigma Planning Corp

Position in AMPX — Amprius Technologies, Inc.

CIK 1449126 ANN ARBOR, MI

Position in AMPX

as of Mar 31, 2026 · filed May 4, 2026 Compact

Position Value

$510,605

New position

Shares Held

30,285

first reported quarter

Ownership

0.021%

of shares outstanding

% of Portfolio

0.03%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2026

1 quarter on record

Voting authority Sole 0.ToString("F0")% Shared 0.ToString("F0")% None 100.ToString("F0")%

Industrials · as of Mar 31, 2026

Sigma Planning Corp holds $10,985,905 across 7 Electrical Equipment & Parts names. AMPX ranks #3 (4.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VRT	Vertiv Holdings Co	27,023	$6,771,423
2	BE	Bloom Energy Corp	23,834	$3,229,268
3	AMPX	Amprius Technologies, Inc. This page	30,285	$510,605
4	HUBB	Hubbell Inc	464	$227,703
5	POWL	Powell Industries Inc	991	$178,736
6	BLDP	Ballard Power Systems Inc.	15,104	$36,551
7	PLUG	Plug Power Inc	13,991	$31,619

1 filing row on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$510,605	30,285	—	Shares	Sole	2026-05-04
No filing history on record for this holder in this stock.