Ambarella
AMBA
324 hedge funds and large institutions have $2.62B invested in Ambarella in 2025 Q4 according to their latest regulatory filings, with 58 funds opening new positions, 101 increasing their positions, 118 reducing their positions, and 54 closing their positions.
305% more call options, than puts
Call options by funds: $178M | Put options by funds: $44.1M
2.75% more ownership
Funds ownership: 83.3% → 86.05% (+2.8%)
7% more first-time investments, than exits
New positions opened: 58 | Existing positions closed: 54
2% less funds holding
Funds holding: 329 → 324 (-5)
11% less capital invested
Capital invested by funds: $2.93B → $2.62B (-$310M)
14% less repeat investments, than reductions
Existing positions increased: 101 | Existing positions reduced: 118
50% less funds holding in top 10
Funds holding in top 10: 2 → 1 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
T. Rowe Price Associates
Baltimore,
Maryland
|
+$67M |
| 2 |
SPC
Slate Path Capital
New York
|
+$65.8M |
| 3 |
Point72 Asset Management
Stamford,
Connecticut
|
+$52.6M |
| 4 |
JCAM
Jericho Capital Asset Management
New York
|
+$30.2M |
| 5 |
Vanguard Group
Malvern,
Pennsylvania
|
+$25.2M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Goldman Sachs
New York
|
-$24.2M |
| 2 |
Invesco
Atlanta,
Georgia
|
-$22.2M |
| 3 |
Fuller & Thaler Asset Management
San Mateo,
California
|
-$21M |
| 4 |
Arrowstreet Capital
Boston,
Massachusetts
|
-$20.9M |
| 5 |
Renaissance Technologies
New York
|
-$20M |
AMBA Hedge Fund Activity: Q4 2025 in Review
324 of the 8,267 institutional investors tracked by Wall St. Rank reported a position in Ambarella (AMBA) for Q4 2025, worth a combined $2.62B — down 11% from $2.93B a quarter earlier.
Buyers outnumbered sellers: 58 funds opened new AMBA positions and 54 closed out — a net gain of 4 holders — while 101 added to existing stakes and 118 trimmed.
The largest buyer was T. Rowe Price Associates, adding an estimated $67M. The largest seller was Goldman Sachs, cutting an estimated $24.2M.
- 324 institutional investors held Ambarella (AMBA) as of Q4 2025, down from 329 in Q3 2025.
- Funds reported $2.62B of Ambarella stock for Q4 2025, down 11% quarter-over-quarter.
- 58 funds opened new Ambarella positions in Q4 2025 and 54 closed out, a net change of +4 holders.
- The largest Ambarella buyer in Q4 2025 was T. Rowe Price Associates, an estimated $67M added.
- The largest Ambarella seller in Q4 2025 was Goldman Sachs, an estimated $24.2M sold.
Based on aggregated 13F filings for Q4 2025.