Ambarella, Inc.
$67.14-1%
+$600.2M
Net Activity
+13.77% total shares
Institutions Holding
345
Popularity Rank
#1819
Avg Weight
0.09%
Total Value
$3.4B
Market Cap
$2.9B
345 institutions currently hold AMBA, with 216 net buyers and 137 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Increased
Based on recent trading activity
Net Selling Institutions
137
Net Buying Institutions
216
Top 5 by Value
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Across its top 20 institutional holders, AMBA's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 5/100, avg. turnover score 37/100).
AMBA ranks #1819 out of 37501 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
345 institutions disclose a position in AMBA, but none treat it as a major bet — even Samjo Management, LLC, its most concentrated holder, allocates just 4.0% of its own portfolio to it.
Manufacturers Life Insurance Company, THE has added to its AMBA position for two straight quarters, increasing it by $83.0M to reach $158.2M today.
Steve Cohen has trimmed its AMBA position for two straight quarters, cutting it by $62.2M while still holding $10.6M.
AMBA is down 1% today, but institutions show net buying of $600.2M this quarter — a divergence between today's price move and the underlying institutional flow.
AMBA reported a net loss of $69.6M over the trailing twelve months.
+$824.3M
Total Buy Value
$677.0M
Total Sell Value
216
Net Buyers
137
Net Sellers
AMBA
Q2 2026
Top 5 Institutional Movers
AMBA 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.
6
Filings (90d)
$3.55M
Total Est. Value
44K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| YUN-LUNG CHEN | 2026-07-09 | $469K |
| CHIHONG JOHN JU | 2026-07-01 | $888K |
| FENG-MING WANG | 2026-07-01 | $1.39M |
| PAISLEY CHRISTOPHER B | 2026-06-26 | $16K |
| Young John Alexander | 2026-06-17 | $124K |
| Chen Yun-Lung | 2026-06-12 | $661K |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
No Schedule 13D/13G filings for this ticker
1
Filings (14d)
Ambarella shareholders voted at the 2026 annual meeting to approve an amended version of the company's 2021 equity incentive plan. The plan allows the company to grant stock-based awards to employees and directors. The board had previously approved the changes, but finalization depended on the shareholder vote, which has now been obtained.
View Full Filing (SEC EDGAR)G037AX101
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Access AMBA's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/AMBACLI
npx alphasmo stocks get AMBA