Ambarella
AMBA
305 hedge funds and large institutions have $1.88B invested in Ambarella in 2026 Q1 according to their latest regulatory filings, with 61 funds opening new positions, 114 increasing their positions, 84 reducing their positions, and 74 closing their positions.
88% more call options, than puts
Call options by funds: $36.6M | Put options by funds: $19.4M
36% more repeat investments, than reductions
Existing positions increased: 114 | Existing positions reduced: 84
2.69% less ownership
Funds ownership: 86.04% → 83.35% (-2.7%)
6% less funds holding
Funds holding: 323 → 305 (-18)
18% less first-time investments, than exits
New positions opened: 61 | Existing positions closed: 74
28% less capital invested
Capital invested by funds: $2.62B → $1.88B (-$747M)
100% less funds holding in top 10
Funds holding in top 10: 1 → 0 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Millennium Management
New York
|
+$83.7M |
| 2 |
F
FIFTHDELTA
London,
United Kingdom
|
+$34.1M |
| 3 |
Manulife (Manufacturers Life Insurance)
Canada,
Ontario, Canada
|
+$32.7M |
| 4 |
Citadel Advisors
Miami,
Florida
|
+$24.7M |
| 5 |
WP
Woodline Partners
San Francisco,
California
|
+$21.8M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
JCAM
Jericho Capital Asset Management
New York
|
-$112M |
| 2 |
Fuller & Thaler Asset Management
San Mateo,
California
|
-$60.1M |
| 3 |
SPC
Slate Path Capital
New York
|
-$57.7M |
| 4 |
Barclays
London,
United Kingdom
|
-$42.4M |
| 5 |
DCM
Driehaus Capital Management
Chicago,
Illinois
|
-$25.9M |
AMBA Hedge Fund Activity: Q1 2026 in Review
305 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in Ambarella (AMBA) for Q1 2026, worth a combined $1.88B — down 28% from $2.62B a quarter earlier.
Sellers outnumbered buyers: 74 funds closed out of AMBA and 61 opened new positions — a net loss of 13 holders — while 84 trimmed existing stakes and 114 added.
The largest buyer was Millennium Management, adding an estimated $83.7M. The largest seller was Jericho Capital Asset Management, exiting entirely with an estimated $112M sold.
- 305 institutional investors held Ambarella (AMBA) as of Q1 2026, down from 323 in Q4 2025.
- Funds reported $1.88B of Ambarella stock for Q1 2026, down 28% quarter-over-quarter.
- 61 funds opened new Ambarella positions in Q1 2026 and 74 closed out, a net change of -13 holders.
- The largest Ambarella buyer in Q1 2026 was Millennium Management, an estimated $83.7M added.
- The largest Ambarella seller in Q1 2026 was Jericho Capital Asset Management, an estimated $112M sold.
Based on aggregated 13F filings for Q1 2026.