Ambarella, Inc.
US ˙ NasdaqGS ˙ KYG037AX1015

SecurityAMBA / Ambarella, Inc.
InstitutionAxa S.a.
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Axa S.a. closes position in AMBA / Ambarella, Inc.

On November 14, 2025 - Axa S.a. filed a 13F-HR form disclosing ownership of 0 shares of Ambarella, Inc. (US:AMBA) valued at $0 USD as of September 30, 2025. The entity filed a previous 13F-HR on August 14, 2025 disclosing 356,992 shares of Ambarella, Inc.. The current value of the position is $0 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2025-11-14 2025-09-30 13F AMBARELLA SHS G037AX101 0 -100.00 0
2025-08-14 2025-06-30 13F AMBARELLA SHS G037AX101 356,992 -5,562 -1.53 23,585 29.25 0.0677
2025-05-15 2025-03-31 13F AMBARELLA SHS G037AX101 362,554 -9,210 -2.48 18,247 -32.52 0.0599
2025-02-14 2024-12-31 13F AMBARELLA SHS G037AX101 371,764 -8,680 -2.28 27,042 26.02 0.0821
2024-11-14 2024-09-30 13F AMBARELLA SHS G037AX101 380,444 -4,241 -1.10 21,459 3.40 0.0635
2025-02-25 2024-06-30 13F/A-1 AMBARELLA SHS G037AX101 384,685 -7,458 -1.90 20,754 4.24 0.0617
2024-08-14 2024-06-30 13F AMBARELLA SHS G037AX101 384,685 -7,458 20,754 0.0617
2024-05-15 2024-03-31 13F AMBARELLA SHS G037AX101 392,143 -15,946 -3.91 19,909 -20.40 0.0597
2024-07-16 2023-12-31 13F/A-1 AMBARELLA SHS G037AX101 408,089 -43,051 -9.54 25,012 4.55 0.0806
2024-02-14 2023-12-31 13F AMBARELLA SHS G037AX101 408,089 -43,051 25,012 0.0490
2023-11-14 2023-09-30 13F AMBARELLA SHS G037AX101 451,140 -87,934 -16.31 23,924 -46.96 0.0841
2023-08-14 2023-06-30 13F AMBARELLA SHS G037AX101 539,074 -3,641 -0.67 45,104 7.35 0.1499
2023-05-15 2023-03-31 13F AMBARELLA SHS G037AX101 542,715 1,734 0.32 42,017 -5.55 0.1445
2023-02-14 2022-12-31 13F AMBARELLA SHS G037AX101 540,981 -54,605 -9.17 44,485 32.95 0.1605
2023-02-14 2022-09-30 13F/A-1 Ambarella SHS G037AX101 595,586 -6,609 -1.10 33,460 -15.12 0.1316
2022-11-14 2022-09-30 13F Ambarella SHS G037AX101 595,586 -6,609 33,460 0.1316
2023-02-14 2022-06-30 13F/A-1 Ambarella SHS G037AX101 602,195 -6,163 -1.01 39,420 -38.24 0.1461
2022-08-15 2022-06-30 13F Ambarella SHS G037AX101 602,195 -6,163 39,420 0.1461
2023-02-14 2022-03-31 13F/A-1 Ambarella SHS G037AX101 608,358 173,582 39.92 63,829 -27.64 0.1814
2022-05-13 2022-03-31 13F Ambarella SHS G037AX101 608,358 173,582 63,829 0.1814
2022-02-14 2021-12-31 13F Ambarella SHS G037AX101 434,776 -45,285 -9.43 88,212 17.99 0.2255
2021-11-15 2021-09-30 13F Ambarella SHS G037AX101 480,061 -21,462 -4.28 74,765 39.81 0.2098
2021-08-13 2021-06-30 13F/A-1 Ambarella SHS G037AX101 501,523 4,142 0.83 53,477 7.10 0.1508
2021-08-13 2021-06-30 13F Ambarella SHS G037AX101 501,523 4,142 53,477 0.0903
2021-05-14 2021-03-31 13F Ambarella SHS G037AX101 497,381 -67,557 -11.96 49,932 -3.74 0.1520
2021-02-12 2020-12-31 13F Ambarella SHS G037AX101 564,938 -22,402 -3.81 51,873 69.26 0.1628
2021-02-11 2020-09-30 13F/A-1 Ambarella SHS G037AX101 587,340 -97,574 -14.25 30,647 -2.30 0.1108
2020-11-13 2020-09-30 13F Ambarella SHS G037AX101 587,340 -97,574 30,647 61,176.2760
2021-02-12 2020-06-30 13F/A-1 AMBARELLA SHS G037AX101 684,914 -48,682 -6.64 31,369 -11.94 0.1236
2020-08-14 2020-06-30 13F AMBARELLA SHS G037AX101 684,914 -48,682 31,369 123,708.2292
2021-02-12 2020-03-31 13F/A-2 AMBARELLA SHS G037AX101 733,596 -142,904 -16.30 35,623 -32.89 0.1781
2020-06-15 2020-03-31 13F/A-1 AMBARELLA SHS G037AX101 733,596 0 35,623 0.1782
2020-05-15 2020-03-31 13F AMBARELLA SHS G037AX101 733,596 -142,904 35,623 99,068.1757
2021-02-12 2019-12-31 13F/A-1 AMBARELLA SHS G037AX101 876,500 73,572 9.16 53,081 5.21 0.2159
2020-02-18 2019-12-31 13F AMBARELLA SHS G037AX101 876,500 73,572 53,081 216,127.6830
2021-02-12 2019-09-30 13F/A-1 AMBARELLA SHS G037AX101 802,928 -161,283 -16.73 50,452 18.57 0.2008
2019-11-14 2019-09-30 13F AMBARELLA SHS G037AX101 802,928 -161,283 50,452 201,054.4319
2021-02-12 2019-06-30 13F/A-1 AMBARELLA SHS G037AX101 964,211 -120,624 -11.12 42,551 -9.21 0.1661
2019-08-13 2019-06-30 13F AMBARELLA SHS G037AX101 964,211 -120,624 42,551 166,867.1247
2019-05-14 2019-03-31 13F AMBARELLA SHS G037AX101 1,084,835 -55,830 -4.89 46,865 17.46 0.1831
2019-02-13 2018-12-31 13F AMBARELLA SHS G037AX101 1,140,665 -42,546 -3.60 39,900 -12.82 0.1739
2018-11-08 2018-09-30 13F AMBARELLA SHS G037AX101 1,183,211 -56,777 -4.58 45,767 -4.41 0.1679
2018-08-13 2018-06-30 13F AMBARELLA SHS G037AX101 1,239,988 20,627 1.69 47,876 -19.85 0.1835
2018-05-14 2018-03-31 13F AMBARELLA SHS G037AX101 1,219,361 155,045 14.57 59,736 -4.47 0.2384
2018-02-13 2017-12-31 13F AMBARELLA SHS G037AX101 1,064,316 230,238 27.60 62,528 52.96 0.2455
2017-12-01 2017-09-30 13F/A-1 AMBARELLA SHS G037AX101 834,078 125,972 17.79 40,878 18.90 0.1761
2017-11-13 2017-09-30 13F AMBARELLA SHS G037AX101 834,078 125,972 40,878
2017-08-10 2017-06-30 13F AMBARELLA SHS G037AX101 708,106 355,170 100.63 34,379 78.05 0.1561
2017-05-11 2017-03-31 13F AMBARELLA SHS G037AX101 352,936 352,936 19,309 0.0872
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.