Amprius Technologies, Inc. (AMPX) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

126,630,085Shares Outstanding

69,782,779Shares held by institutions

$1,374,022,919Value of institutional holdings

55.11%Institutional ownership %

15.40%Shares Changed QoQ

202No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Amprius Technologies, Inc. (NYSE:AMPX) showed up in the 13F filings of 202 institutional investors as of December 2025.

These investors held 53.4% of outstanding shares in December 2025, up from 50.4% in September 2025.
They increased total shares held in Amprius Technologies by 12.07% from last quarter, and the number of investors in AMPX increased 121.98% annually.
During the quarter, 132 of these 202 funds increased positions in AMPX, 52 reduced exposure, and 18 held steady.
The aggregate institutional position in Amprius Technologies amounted to 67.59Mn shares as of December 2025, up by 7.28Mn shares quarter on quarter, and up 50.57Mn shares year over year.
SG Americas Securities, LLC holds the largest position in AMPX at 423.04K shares as of December 31, 2025, or 0.33% of shares outstanding.
The largest buyers of Amprius Technologies for the quarter ending December 2025 were SG Americas Securities, LLC (167.78K), FNY Investment Advisers, LLC (20.76K), Hidden Cove Wealth Management, LLC (13.69K), Joel Isaacson & Co., LLC (10.0K), MITCHELL & PAHL PRIVATE WEALTH, LLC (10.0K).
Top sellers of AMPX stock for the quarter ending December 2025 included OPPENHEIMER & CO INC (29.58K), Inspire Investing, LLC (29.19K), Bayforest Capital Ltd (25.4K), Janney Montgomery Scott LLC (23.23K), SLT Holdings LLC (22.25K).
Per Business Quant data, the top 10 holders of Amprius Technologies for the quarter ending December 2025 are SG Americas Securities, LLC (423.04K), OPPENHEIMER & CO INC (412.51K), Huntleigh Advisors, Inc. (162.9K), Janney Montgomery Scott LLC (145.25K), SLT Holdings LLC (101.05K), Inspire Investing, LLC (31.05K), CORNERSTONE PARTNERS CAPITAL MANAGEMENT, LLC (30.71K), FNY Investment Advisers, LLC (20.76K), EWA, LLC (19.55K), NBC SECURITIES, INC. (17.64K).

202 Institutional Holders

69,782,779 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	8,823,779	1,368,076	18.35%	$69,619,616.00
VANGUARD GROUP INC	31 Dec, 2025	7,128,657	616,037	9.46%	$56,245,105.00
Goldman Sachs Group Inc	31 Dec, 2025	4,389,682	2,605,565	146.04%	$34,634,590.00
Morgan Stanley	31 Dec, 2025	2,809,821	66,116	2.41%	$22,169,489.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	2,678,417	253,529	10.46%	$21,136,655.00
State Street Corp	31 Dec, 2025	2,553,710	363,928	16.62%	$20,148,772.00
DRIEHAUS CAPITAL MANAGEMENT LLC	31 Dec, 2025	2,393,212	-697,457	-22.57%	$18,882,443.00
UBS Group AG	31 Dec, 2025	2,098,946	550,938	35.59%	$16,560,684.00
DEUTSCHE BANK AG\	31 Dec, 2025	1,955,018	-111,522	-5.40%	$15,425,092.00
SUSQUEHANNA INTERNATIONAL GROUP, LLP	31 Dec, 2025	1,691,500	786,030	86.81%	$13,345,935.00
VOLORIDGE INVESTMENT MANAGEMENT, LLC	31 Dec, 2025	1,602,001	-274,139	-14.61%	$12,639,788.00
Stephens Investment Management Group LLC	31 Dec, 2025	1,441,698	358,791	33.13%	$11,374,997.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	1,436,939	-316,638	-18.06%	$11,337,449.00
Invesco Ltd.	31 Dec, 2025	1,311,915	-1,067,469	-44.86%	$10,351,010.00
NORGES BANK	31 Dec, 2025	1,304,838	1,304,838	0.00%	$10,295,172.00
Hudson Bay Capital Management LP	31 Dec, 2025	1,100,000	1,100,000	0.00%	$8,679,000.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	1,085,270	497,438	84.62%	$8,562,780.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	1,036,891	62,406	6.40%	$8,181,070.00
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	31 Dec, 2025	984,906	984,906	0.00%	$7,770,908.00
Northern Trust Corp	31 Dec, 2025	963,171	110,892	13.01%	$7,599,419.00

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