Which hedge funds own AMPX? AMPRIUS TECHNOLOGIES INC, Q2 2026 13F holders
43 tracked hedge funds disclosed a position in AMPX (AMPRIUS TECHNOLOGIES INC) in their Q2 2026 13F filings, worth $272.9m in total. The largest holder by portfolio weight is Sender Co & Partners, Inc. at 2.1% of its book. 15 opened a new position this quarter: Shannon River Fund Management LLC, Worth Venture Partners, LLC, Warberg Asset Management LLC, Jupiter Asset Management Ltd. 18 exited: MYDA Advisors LLC, Science & Technology Partners, L.P., Thames Capital Management LLC.
- 43
- Holders Tracked managers whose filing for the quarter reports a long equity position in the security.
- 15
- New this quarter Holders whose previous filing (at most two quarters earlier) did not report the security.
- 18
- Exited this quarter Tracked managers whose previous filing reported the security and whose filing for the quarter does not.
- $48.9m
- Inflow, new holders Combined value of the positions the new holders reported for the quarter.
- $61.1m
- Outflow, exits Combined value the exiting managers reported for the security in their previous filing.
- $273m
- Combined value Sum of the holders' reported positions in the security.
- 3.5%
- Share of managers holding Holders as a share of tracked managers filing for that quarter. Comparable across the 2024 coverage expansion, where the raw holder count is not.
Holders, Q2 2026
Exited since the previous filing
| MYDA Advisors LLC | 2.9% | $12.4m |
| Science & Technology Partners, L.P. | 2.8% | $10.7m |
| Thames Capital Management LLC | 1.6% | $8.9m |
| Ardsley Advisory Partners LP | 0.3% | $2.1m |
| Apis Capital Advisors, LLC | 0.3% | $1.8m |
| Scientech Research LLC | 0.2% | $293k |
| Bayforest Capital Ltd | 0.2% | $194k |
| Twinbeech Capital LP | 0.1% | $1.3m |
| CenterBook Partners LP | 0.1% | $2.0m |
| Occudo Quantitative Strategies LP | 0.08% | $1.4m |
| Y-Intercept (Hong Kong) Ltd | 0.05% | $2.8m |
| FORA Capital, LLC | 0.05% | $700k |
| Voloridge Investment Management, LLC | 0.04% | $9.0m |
| Boothbay Fund Management, LLC | 0.03% | $1.2m |
| Schonfeld Strategic Advisors LLC | 0.02% | $2.3m |
| Verition Fund Management LLC | 0.0% | $287k |
| Arrowstreet Capital, Limited Partnership | 0.0% | $3.8m |
| Quarry LP | 0.0% | $5.8k |
Ownership over time
Who discovered AMPX first? Beta
The run: Q3 2024 → Q1 2026, ×15
| Thames Capital Management LLC | Q1 2026 | – | +0.5 pts |
| Wolf Hill Capital Management, LP | Q1 2026 | – | −0.3 pts |
| Sender Co & Partners, Inc. | Q1 2026 | – | −0.4 pts |
Split-adjusted quarter-end prices, excluding dividends. They describe the stock while each manager held it, not the return it earned.