Ambarella Ownership | Who Owns Ambarella?
Ambarella Ownership Summary
Ambarella is owned by 85.41% institutional investors, 4.83% insiders, and 9.75% retail investors. Vanguard group is the largest institutional shareholder, holding 12.88% of AMBA shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 3.01% of its assets in Ambarella shares.
AMBA Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Ambarella | 85.41% | 4.83% | 9.75% |
| Sector | Technology Stocks | 35.99% | 15.18% | 48.83% |
| Idea | Semiconductor Stocks List | 48.16% | 6.95% | 44.89% |
| Idea | Self Driving Car Stocks List | 36.19% | 7.47% | 56.34% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Vanguard group | 5.48M | 12.88% | $388.22M |
| Blackrock funding, inc. /de | 3.79M | 8.87% | $195.05M |
| Blackrock | 3.47M | 8.52% | $187.38M |
| State street | 1.98M | 4.63% | $101.74M |
| Manufacturers life insurance company, the | 1.59M | 3.71% | $81.64M |
| Millennium management | 1.51M | 3.54% | $77.86M |
| Geode capital management | 1.03M | 2.41% | $52.99M |
| Price t rowe associates inc /md/ | 952.32K | 2.23% | $49.02M |
| Citadel advisors | 931.86K | 2.18% | $47.97M |
| Legal & general group | 926.40K | 2.17% | $47.69M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Fifthdelta | 546.54K | 3.88% | $28.13M |
| Kodai capital management lp | 778.55K | 2.32% | $56.63M |
| Katamaran capital llp | 33.02K | 2.26% | $2.83M |
| Westerly capital management | 130.00K | 1.82% | $6.69M |
| Sws partners | 91.44K | 1.16% | $4.71M |
| Shannon river fund management | 114.94K | 1.13% | $5.92M |
| Freemont management | 135.80K | 1.06% | $6.99M |
| Samjo management | 41.63K | 0.93% | $2.14M |
| Collar capital management | 18.13K | 0.92% | $1.56M |
| Act capital management | 16.00K | 0.90% | $1.37M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Millennium management | 1.51M | 0.03% | 1.34M |
| Fifthdelta | 546.54K | 3.88% | 546.54K |
| Manufacturers life insurance company, the | 1.59M | 0.07% | 524.94K |
| Citadel advisors | 931.86K | 0.01% | 396.19K |
| Woodline partners lp | 349.48K | 0.07% | 349.48K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Jericho capital asset management | - | - | -1.59M |
| Macquarie group | - | - | -1.18M |
| Fuller & thaler asset management | - | - | -848.09K |
| Slate path capital lp | - | - | -814.40K |
| Barclays | 15.67K | 0.00% | -679.42K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Fifthdelta | 546.54K | 3.88% | 546.54K | $28.13M |
| Woodline partners lp | 349.48K | 0.07% | 349.48K | $17.99M |
| Axa investment managers | 332.58K | 0.07% | 332.58K | $27.44M |
| Vanguard fiduciary trust | 284.29K | 0.00% | 284.29K | $14.63M |
| Hawk ridge capital management lp | 276.10K | 0.52% | 276.10K | $14.21M |
Sold Out
| Holder | Change |
|---|---|
| Assetmark | -1.00 |
| Stephens consulting | -1.00 |
| Tortoise investment management | -2.00 |
| Abound wealth management | -2.00 |
| Southstate | -3.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 313 | -10.57% | 36,474,494 | -1.53% | 85 | 1.13% | 169 | 11.92% | 85 | -33.59% |
| Dec 31, 2025 | 106 | -70.31% | 8,856,314 | -75.10% | 20 | 0.30% | 45 | -76.56% | 37 | -63.73% |
| Sep 30, 2025 | 129 | -59.31% | 8,725,551 | -73.23% | 20 | 0.35% | 65 | -60.12% | 38 | -63.46% |
| Jun 30, 2025 | 322 | 2.22% | 35,040,309 | -0.42% | 82 | 1.14% | 163 | -3.55% | 106 | 10.42% |
| Mar 31, 2025 | 10 | -96.91% | 1,154,851 | -96.58% | 2 | 0.04% | 2 | -98.76% | 2 | -97.98% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 1.32M | 3.01% | 19.58K |
| Vanguard Morn Total Stk Mkt Idx Investor | 1.32M | 3.01% | 19.58K |
| Vanguard US Total Market Shares ETF | 1.24M | 2.95% | 1.28K |
| State Street® SPDR® S&P® Smcndctr ETF | 1.17M | 2.67% | - |
| iShares Russell 2000 ETF | 1.11M | 2.54% | 12.06K |
| Vanguard Information Technology ETF | 1.01M | 2.31% | 7.56K |
| Vanguard Small Cap Index | 955.09K | 2.18% | 14.54K |
| T. Rowe Price New Horizons | 732.34K | 1.67% | 130.10K |
| US Small-Cap Growth II Equity Comp | 732.34K | 1.67% | 192.66K |
| SPDR® S&P Semiconductor ETF | 647.44K | 1.52% | - |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Jul 09, 2026 | Chen Yun-Lung | VP, Business Dev. & Marketing | Sell | $468.66K |
| Jul 01, 2026 | Ju Chi-Hong | Senior VP, Systems & GM | Sell | $888.40K |
| Jul 01, 2026 | Wang Feng-Ming | CEO | Sell | $1.46M |
| Jun 26, 2026 | PAISLEY CHRISTOPHER B | - | Sell | $15.50K |
| Jun 17, 2026 | Young John Alexander | CFO | Sell | $123.71K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q3 | - | 3 |
| 2026 Q2 | - | 12 |
| 2026 Q1 | - | 14 |
| 2025 Q4 | - | 11 |
| 2025 Q3 | - | 6 |
AMBA Ownership FAQ
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