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Ambarella

323 hedge funds and large institutions have $2.62B invested in Ambarella in 2025 Q4 according to their latest regulatory filings, with 57 funds opening new positions, 101 increasing their positions, 118 reducing their positions, and 54 closing their positions.

New
Increased
Maintained
Reduced
Closed

305% more call options, than puts

Call options by funds: $178M | Put options by funds: $44.1M

2.74% more ownership

Funds ownership: 83.3%86.04% (+2.7%)

6% more first-time investments, than exits

New positions opened: 57 | Existing positions closed: 54

2% less funds holding

Funds holding: 329323 (-6)

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: 21 (-1)

Holders
323
Holders Change
-6
Holders Change %
-1.82%
% of All Funds
3.93%
Holding in Top 10
1
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-50%
% of All Funds
0.01%
New
57
Increased
101
Reduced
118
Closed
54
Calls
$178M
Puts
$44.1M
Net Calls
+$134M
Net Calls Change
+$41.8M
Name Holding Trade Value Shares
Change
Change in
Stake
SST
51
S Squared Technology
New York
$9.11M -$2.02M -25,000 -16%
EGM
52
Engineers Gate Manager
New York
$8.86M -$658K -8,141 -6%
Acadian Asset Management
53
Acadian Asset Management
Massachusetts
$8.59M -$2.31M -28,576 -19%
AllianceBernstein
54
AllianceBernstein
Tennessee
$8.45M +$5.78M +71,512 +150%
Bank of New York Mellon
55
Bank of New York Mellon
New York
$8.24M +$541K +6,693 +6%
TCM
56
Tributary Capital Management
Nebraska
$7.62M -$8.44M -104,387 -49%
HIM
57
Hillsdale Investment Management
Ontario, Canada
$7.43M +$389K +4,820 +5%
GCM
58
Glenview Capital Management
New York
$7.08M +$8.08M +100,000 New
Deutsche Bank
59
Deutsche Bank
Germany
$6.96M +$1.44M +17,785 +22%
Wells Fargo
60
Wells Fargo
California
$6.52M +$2.33M +28,867 +46%
SP
61
SWS Partners
Ohio
$6.32M +$1.03M +12,774 +17%
Mitsubishi UFJ Asset Management
62
Mitsubishi UFJ Asset Management
Japan
$6.11M -$1.04M -12,851 -14%
WCM
63
Westerly Capital Management
California
$6.02M +$3.23M +40,000 +89%
EIM
64
Essex Investment Management
Massachusetts
$5.94M -$122K -1,509 -2%
Invesco
65
Invesco
Georgia
$5.8M -$22.2M -274,366 -77%
UBS AM
66
UBS AM
Illinois
$5.72M +$165K +2,040 +3%
Swiss National Bank
67
Swiss National Bank
Switzerland
$5.67M +$154K +1,900 +2%
Lord, Abbett & Co
68
Lord, Abbett & Co
New Jersey
$5.65M -$2.02K -25 -0%
RAM
69
Readystate Asset Management
Illinois
$5.45M +$318K +3,934 +5%
Russell Investments Group
70
Russell Investments Group
United Kingdom
$5.02M -$242K -2,998 -4%
SEI Investments
71
SEI Investments
Pennsylvania
$4.56M +$1.78M +22,023 +52%
Ameriprise
72
Ameriprise
Minnesota
$4.25M -$2M -24,767 -29%
Arrowstreet Capital
73
Arrowstreet Capital
Massachusetts
$4.06M -$20.9M -259,043 -82%
RhumbLine Advisers
74
RhumbLine Advisers
Massachusetts
$3.96M -$300K -3,710 -6%
SG Americas Securities
75
SG Americas Securities
New York
$3.91M +$4.46M +55,225 New