AMPRIUS TECHNOLOGIES INC AMPX
$12.38
-8.9% 52w: $3.45 – $22.91
Latest 13F among current holders filed 32 days ago (Jun 3, 2026)
Price — last 12 months
research preview data3.4513.1822.91
Jun 20, 2025 Jul 2, 2026
Institutional holders
245
+40 QoQ
13F value
$1.42B
+166.2% QoQ
Smart-money holders
9
signal tier ≥ 2
New smart buyers
6
Q1 2026
Options barometer
1.8×
$219.9M calls / $122.7M puts
Institutional value by quarter
Number of holders
Who owns AMPX?
Q1 2026 filings| Fund | Type | Shares | Value | % of fund | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | Index provider | 9.2M | $155.5M | 0.0% | +4.6% |
| VANGUARD CAPITAL MANAGEMENT LLC | Diversified mechanical | 4.9M | $82.8M | 0.0% | — |
| JANE STREET GROUP, LLC | Market maker | 4.2M | $70.1M | 0.1% | +1849.5% |
| Driehaus Capital Management LLC | Other | 3.8M | $64.0M | 0.5% | +58.5% |
| TWO SIGMA INVESTMENTS, LP | Quant stat arb | 3.5M | $59.1M | 0.1% | +144.0% |
| MORGAN STANLEY | Bank broker | 3.2M | $53.3M | 0.0% | +12.5% |
| GEODE CAPITAL MANAGEMENT, LLC | Index provider | 2.8M | $47.5M | 0.0% | +5.1% |
| STATE STREET CORP | Index provider | 2.7M | $45.7M | 0.0% | +6.2% |
| UBS Group AG | Bank broker | 2.3M | $39.0M | 0.0% | +10.1% |
| GOLDMAN SACHS GROUP INC | Bank broker | 2.2M | $37.5M | 0.0% | +1.4% |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Other | 2.0M | $34.1M | 0.0% | New |
| PRICE T ROWE ASSOCIATES INC /MD/ | Diversified mechanical | 1.9M | $32.0M | 0.0% | +2254.8% |
| Baird Financial Group, Inc. | Diversified mechanical | 1.6M | $26.7M | 0.0% | +104.9% |
| CITADEL ADVISORS LLC | Multistrat pod | 1.4M | $24.3M | 0.0% | +216.3% |
| MARSHALL WACE, LLP | Quant stat arb | 1.2M | $20.7M | 0.0% | New |
| Qube Research & Technologies Ltd | Quant stat arb | 1.2M | $20.7M | 0.0% | +40.4% |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Other | 1.2M | $19.7M | 0.1% | +18.8% |
| D. E. Shaw & Co., Inc. | Quant stat arb | 1.1M | $18.1M | 0.0% | New |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Diversified mechanical | 1.1M | $18.1M | 0.0% | — |
| JPMORGAN CHASE & CO | Bank broker | 1.2M | $17.9M | 0.0% | +1357.4% |
| BARCLAYS PLC | Bank broker | 1.1M | $17.8M | 0.0% | +124.5% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Index provider | 1.0M | $17.5M | 0.0% | +0.2% |
| MILLENNIUM MANAGEMENT LLC | Multistrat pod | 1.0M | $17.5M | 0.0% | -4.6% |
| NORTHERN TRUST CORP | Index provider | 1.0M | $17.2M | 0.0% | +6.2% |
| HRT FINANCIAL LP | Diversified mechanical | 1.0M | $16.9M | 0.0% | New |
| Hood River Capital Management LLC | Other | 949.1K | $16.0M | 0.2% | +17.2% |
| Stephens Investment Management Group LLC | Other | 893.1K | $15.1M | 0.2% | -38.1% |
| DEUTSCHE BANK AG\ | Bank broker | 875.0K | $14.8M | 0.0% | -55.2% |
| VANGUARD FIDUCIARY TRUST CO | Diversified mechanical | 872.6K | $14.7M | 0.0% | — |
| Wolf Hill Capital Management, LP ★2 | Fundamental concentrated | 802.9K | $13.5M | 1.9% | New |
| MYDA Advisors LLC | Quant stat arb | 735.0K | $12.4M | 2.9% | New |
| STIFEL FINANCIAL CORP | Diversified mechanical | 733.2K | $12.4M | 0.0% | -5.0% |
| Trexquant Investment LP | Diversified mechanical | 716.3K | $12.1M | 0.1% | +2209.8% |
| Science & Technology Partners, L.P. ★2 | Fundamental concentrated | 635.1K | $10.7M | 2.8% | New |
| OBERWEIS ASSET MANAGEMENT INC/ | Other | 585.0K | $9.9M | 0.3% | New |
| SEI INVESTMENTS CO | Diversified mechanical | 579.2K | $9.8M | 0.0% | +34.1% |
| Russell Investments Group, Ltd. | Diversified mechanical | 543.5K | $9.2M | 0.0% | +131.2% |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Diversified mechanical | 532.0K | $9.0M | 0.0% | -66.8% |
| THAMES CAPITAL MANAGEMENT LLC ★2 | Fundamental diversified | 526.8K | $8.9M | 1.6% | Held |
| Invesco Ltd. | Index provider | 498.8K | $8.4M | 0.0% | -62.0% |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | Index provider | 489.7K | $8.3M | 0.0% | -0.3% |
| ESSEX INVESTMENT MANAGEMENT CO LLC | Other | 445.4K | $7.5M | 1.2% | -13.8% |
| SG Americas Securities, LLC | Diversified mechanical | 423.0K | $7.1M | 0.0% | +65.7% |
| POLEN CAPITAL MANAGEMENT LLC ★2 | Long only active | 422.1K | $7.1M | 0.0% | +46.4% |
| TUDOR INVESTMENT CORP ET AL | Quant stat arb | 419.7K | $7.1M | 0.0% | New |
| OPPENHEIMER & CO INC | Diversified mechanical | 412.5K | $7.0M | 0.1% | -6.7% |
| Allspring Global Investments Holdings, LLC | Diversified mechanical | 431.4K | $6.7M | 0.0% | +700.2% |
| FIRST TRUST ADVISORS LP | Index provider | 394.6K | $6.7M | 0.0% | +1105.0% |
| Palisades Investment Partners, LLC ★3 | Fundamental concentrated | 369.5K | $6.2M | 2.4% | New |
| Calamos Advisors LLC | Other | 364.5K | $6.1M | 0.0% | +206.2% |
Exits are not a bearish signal: our backtest shows stocks specialists exit keep outperforming for 3+ quarters — selling usually means profit-taking, not a forecast.
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