Latest Period
Q4 2025
Security Snapshot
Amprius Technologies, Inc. - Common stock, $0.0001 par value (AMPX) Institutional Ownership
CUSIP: 03214Q108
13F Institutional Holders and Ownership History from Q3 2022 to Q1 2026
Institutions Reporting
204
Shares (Excl. Options)
67,707,190
Price
$7.89
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- Type / Class
- Equity / Common stock, $0.0001 par value
- Symbol
- AMPX on NYSE
- Shares outstanding
- 137,544,784
- Price per share
- $18.39
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 67,707,190
- Total reported value
- $534,258,250
- % of total 13F portfolios
- 0%
- Share change
- +5,469,573
- Value change
- +$34,169,804
- Number of holders
- 204
- Price from insider filings
- $18.39
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- AMPX - Amprius Technologies, Inc. - Common stock, $0.0001 par value is tracked under CUSIP 03214Q108.
- 204 institutions reported positions in Q4 2025.
- 3 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 204 to 80 between Q4 2025 and Q1 2026.
- Reported value moved from $534,258,250 to $155,858,357.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 204 institutions filings for Q4 2025.
Investment Quick Answers
What is CUSIP 03214Q108?
CUSIP 03214Q108 identifies AMPX - Amprius Technologies, Inc. - Common stock, $0.0001 par value in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 03214Q108:
Significant Owners of Amprius Technologies, Inc. - Common stock, $0.0001 par value (AMPX) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 5.8% | $76,764,461 | 7,297,002 | BlackRock, Inc. | 30 Sep 2025 | |||
| JANE STREET GROUP, LLC | 5.1% | $118,269,258 | 7,014,784 | JANE STREET GROUP, LLC | 22 Apr 2026 | |||
| SALZMAN ALAN E | 2.6% | $20,047,668 | 3,112,992 | SALZMAN ALAN E | 06 Aug 2025 |
As of 31 Dec 2025, 204 institutional investors reported holding 67,707,190 shares of Amprius Technologies, Inc. - Common stock, $0.0001 par value (AMPX). This represents 49% of the company’s total 137,544,784 outstanding shares.
Top 25 Institutional Shareholders
The largest institutional shareholders of Amprius Technologies, Inc. - Common stock, $0.0001 par value (AMPX) together control 37% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 6.4% | 8,823,779 | +18% | 0% | $69,619,616 |
| VANGUARD GROUP INC | 5.2% | 7,128,657 | +9.5% | 0% | $56,245,105 |
| MORGAN STANLEY | 2% | 2,809,821 | +2.4% | 0% | $22,169,489 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.9% | 2,678,417 | +10% | 0% | $21,136,655 |
| STATE STREET CORP | 1.9% | 2,553,710 | +17% | 0% | $20,148,772 |
| Driehaus Capital Management LLC | 1.7% | 2,393,212 | -23% | 0.13% | $18,882,443 |
| GOLDMAN SACHS GROUP INC | 1.6% | 2,194,841 | +23% | 0% | $17,317,295 |
| UBS Group AG | 1.5% | 2,098,946 | +36% | 0% | $16,560,684 |
| DEUTSCHE BANK AG\ | 1.4% | 1,955,018 | -5.4% | 0.01% | $15,425,092 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1.2% | 1,691,500 | +87% | 0.02% | $13,345,935 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | 1.2% | 1,602,001 | -15% | 0.04% | $12,639,788 |
| Stephens Investment Management Group LLC | 1% | 1,441,698 | +33% | 0.15% | $11,374,997 |
| TWO SIGMA INVESTMENTS, LP | 1% | 1,436,939 | -18% | 0.02% | $11,337,449 |
| Invesco Ltd. | 0.95% | 1,311,915 | -45% | 0% | $10,351,010 |
| NORGES BANK | 0.95% | 1,304,838 | 0% | $10,295,172 | |
| Hudson Bay Capital Management LP | 0.8% | 1,100,000 | 0.05% | $8,679,000 | |
| MILLENNIUM MANAGEMENT LLC | 0.79% | 1,085,270 | +85% | 0.01% | $8,562,780 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.75% | 1,036,891 | +6.4% | 0% | $8,181,070 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 0.72% | 984,906 | 0.02% | $7,770,908 | |
| NORTHERN TRUST CORP | 0.7% | 963,171 | +13% | 0% | $7,599,419 |
| JUPITER ASSET MANAGEMENT LTD | 0.7% | 960,912 | +382% | 0.06% | $7,581,595 |
| Qube Research & Technologies Ltd | 0.64% | 874,080 | 0.01% | $6,896,491 | |
| Hood River Capital Management LLC | 0.59% | 809,744 | 0.07% | $6,388,880 | |
| Baird Financial Group, Inc. | 0.56% | 773,428 | -12% | 0.01% | $6,102,347 |
| STIFEL FINANCIAL CORP | 0.56% | 771,509 | -3.1% | 0.01% | $6,087,214 |
Institutional Holders of Amprius Technologies, Inc. - Common stock, $0.0001 par value (AMPX) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 9,274,329 | $155,858,357 | +$7,646,879 | $16.86 | 80 |
| 2025 Q4 | 67,707,190 | $534,258,250 | +$34,169,804 | $7.89 | 204 |
| 2025 Q3 | 63,619,076 | $669,377,974 | +$261,382,421 | $10.52 | 186 |
| 2025 Q2 | 38,039,587 | $160,145,831 | +$72,882,798 | $4.21 | 118 |
| 2025 Q1 | 20,792,389 | $55,722,164 | +$11,174,039 | $2.68 | 99 |
| 2024 Q4 | 16,629,172 | $46,565,451 | +$26,312,011 | $2.80 | 89 |
| 2024 Q3 | 8,263,083 | $9,170,989 | +$545,018 | $1.11 | 65 |
| 2024 Q2 | 7,645,780 | $9,709,555 | +$3,389,388 | $1.27 | 64 |
| 2024 Q1 | 4,918,277 | $13,032,986 | +$1,051,870 | $2.65 | 44 |
| 2023 Q4 | 4,444,605 | $23,509,171 | +$1,730,773 | $5.29 | 49 |
| 2023 Q3 | 4,208,635 | $19,949,419 | +$5,319,098 | $4.74 | 46 |
| 2023 Q2 | 2,710,621 | $19,460,082 | +$5,334,118 | $7.18 | 41 |
| 2023 Q1 | 1,947,022 | $16,956,748 | +$807,030 | $8.71 | 25 |
| 2022 Q4 | 1,860,925 | $14,756,175 | +$4,534,753 | $7.93 | 22 |
| 2022 Q3 | 1,273,029 | $11,741,000 | +$11,741,025 | $9.22 | 12 |