Amprius Technologies, Inc. (AMPX)
- Sector
- Electrical Equipment
- Last price
- $9.16
- As of
Kresmion compiles this page from AMPX's SEC filings, its 13F institutional holders and the market events Kresmion detects, each linked to its source.
Amprius Technologies, Inc. (AMPX): 6 institutional managers tracked by Kresmion reported non-option positions in their 2026Q2 Form 13F filings, and the most recent SEC filing on record for the company is a Form 8-K filed 2026-09-28.
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Preview the AMPX dossierActive events for AMPX
- high13F: funds added
8 tracked funds increased AMPX this 2026Q2, institutional consensus
- high13F: funds added
3 tracked funds increased AMPX this 2026Q2, institutional consensus
- high13F: large increase
CITADEL ADVISORS LLC added +315% to AMPX (2026Q2)
- high13F: large increase
CITADEL ADVISORS LLC added +197% to AMPX (2026Q2)
- high13F: large increase
CITADEL ADVISORS LLC added +232% to AMPX (2026Q2)
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Every event on AMPX, as it fires
You are seeing 5 of 24 events recorded on AMPX since 2026-05-16.
The five above landed across 2 days. The other 19 were recorded on 2 other days. 17 of the 24 are institutional flow rows, which arrive in batches on filing days.
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Largest reported share positions in AMPX (2026Q2)
| Manager / security | Market value | % portfolio | QoQ |
|---|---|---|---|
| TWO SIGMA INVESTMENTS, LPCUSIP 03214Q108 · 2026Q2 | $59.9M | 0.04% | , |
| CITADEL ADVISORS LLCCUSIP 03214Q108 · 2026Q2 | $23.2M | 0.00% | , |
| RENAISSANCE TECHNOLOGIES LLCCUSIP 03214Q108 · 2026Q2 | $19.5M | 0.03% | , |
| MILLENNIUM MANAGEMENT LLCCUSIP 03214Q108 · 2026Q2 | $16.7M | 0.01% | , |
| Point72 Asset Management, L.P.CUSIP 03214Q108 · 2026Q2 | $15.8M | 0.02% | , |
| D. E. Shaw & Co., Inc.CUSIP 03214Q108 · 2026Q2 | $9.3M | 0.00% | , |
Quarterly SEC Form 13F disclosures from the managers Kresmion tracks, not a complete ownership ranking. Non-option holdings only; reported put and call positions are excluded. Different securities are labeled by CUSIP. Values are reporting-period snapshots, not current position values. Filings can arrive up to 45 days after quarter-end.
Recent SEC filings, AMPX
- 8-KSEC EDGAR ↗
- 8-KSEC EDGAR ↗
- 10-QSEC EDGAR ↗
- 8-KSEC EDGAR ↗
- 8-KSEC EDGAR ↗
- 10-QSEC EDGAR ↗
- 8-KSEC EDGAR ↗
- 8-KSEC EDGAR ↗
- 8-KSEC EDGAR ↗
- 10-KSEC EDGAR ↗
AMPX against its peers
AMPX's operating margin of -64.9% ranks in the 27th percentile of 23 Electrical Equipment sub-industry peers, fiscal periods ending between 2025-09-30 and 2026-06-30.
| Metric | AMPX | Peer median | Percentile | n |
|---|---|---|---|---|
| Revenue FY | 71.9M USD | 574M USD | 18 | 24 |
| Gross margin | n/a | 28.6% | n/a | 22 |
| Operating margin | -64.9% | -2.3% | 27 | 23 |
| Net margin | -61.2% | 0.3% | 26 | 24 |
| Return on equity | -42.4% | 3.5% | 20 | 22 |
| P / E | n/a | 30.8x | n/a | 12 |
Peers (24): SHLS, NSSC, ARLO, ALNT, PSIX, RUN, DAKT, CTS, PLUG, CNXN, FLNC, LASR, SMR, OUST, ROG, AEVA, TE, EOSE, KN, ENVX, IPGP, HYLN, ARRY, ITRI. Left out: LPL (period gap). Fiscal periods ending between 2025-09-30 and 2026-06-30. Every figure is one full fiscal year read from one annual filing (AMPX: 10-K), reported in USD. Nothing is trailing twelve months and nothing is converted between currencies. Source: SEC EDGAR XBRL company facts (public domain); prices from Kresmion's daily equity market-data snapshot. Open the full comparison.
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