Amprius Technologies Inc
-$32.6M
Net Activity
-60.47% total shares
Institutions Holding
9
Popularity Rank
#10294
Avg Weight
0.02%
Total Value
$22.6M
9 institutions currently hold AMPX-WS, with 5 net buyers and 9 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Decreased
Based on recent trading activity
Net Selling Institutions
9
Net Buying Institutions
5
Top 5 by Value
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Across its top 9 institutional holders, AMPX-WS's holder base skews toward low-concentration, high-turnover investors on average (avg. concentration score 6/100, avg. turnover score 67/100).
AMPX-WS ranks #10294 out of 37503 tracked stocks by institutional interest, inside the more closely watched half of our coverage.
9 institutions disclose a position in AMPX-WS, but none treat it as a major bet — even Zazove Associates LLC, its most concentrated holder, allocates just 0.1% of its own portfolio to it.
Caption Management, LLC has added to its AMPX-WS position for two straight quarters, increasing it by $6.6M to reach $8.4M today.
+$2.4M
Total Buy Value
$42.1M
Total Sell Value
5
Net Buyers
9
Net Sellers
AMPX-WS
Q2 2026
Top 5 Institutional Movers
-$19.7M
-$7.5M
-$7.4M
-$5.2M
AMPX-WS does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
No Form 144 planned sale filings in the last 90 days
No Schedule 13D/13G filings for this ticker
No Form 8-K filings for this ticker
03214Q116
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,242
Total reported value
$2.2T
3230 13F institutions increased their position this quarter
Institutions Holding
5,990
Total reported value
$3.6T
3033 13F institutions increased their position this quarter
Institutions Holding
6,153
Total reported value
$1.8T
2972 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
4,419
Total reported value
$354.5B
Held by 4419 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,323
Total reported value
$864.3B
Held by 4323 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,246
Total reported value
$320.5B
Held by 4246 institutions — one of the most-tracked stocks on AlphaSMO
Access AMPX-WS's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/AMPX-WSCLI
npx alphasmo stocks get AMPX-WS