Ambarella, Inc.
IT ˙ BIT ˙ KYG037AX1015
€ 60,38 ↓ -6.96 (-10.34%)
2026-06-04
PREÇO DA AÇÃO
SecurityIT:1AMBA / Ambarella, Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership1,079,085 shares
Ownership 3.20%
Morgan Stanley ownership in 1AMBA / Ambarella, Inc.

2020-02-13 - Morgan Stanley has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 1,079,085 shares of Ambarella, Inc. (IT:1AMBA). This represents 3.2 percent ownership of the company. In their previous filing dated 2019-02-12 , Morgan Stanley had reported owning 2,099,462 shares, indicating a decrease of -48.60 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date
Effective
Date
Form Prev
Shares
Latest
Shares
ΔShares
(Percent)
Ownership
(Percent)
ΔOwnership
(Percent)
2020-02-13 2020-02-13 13G/A 2,099,462 1,079,085 -48.60 3.20 -50.77
2019-02-12 2019-02-12 13G/A 1,780,557 2,099,462 17.91 6.50 22.64
2018-06-13 2018-06-13 13G 1,780,557 5.30

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-15 2026-03-31 13F AMBARELLA SHS G037AX101 724,655 -186,822 -20.50 37,302 -42.23 0.0022
2026-05-27 2025-12-31 13F/A-1 AMBARELLA SHS G037AX101 911,477 -47,029 -4.91 64,569 -18.37 0.0039
2026-02-13 2025-12-31 13F AMBARELLA SHS G037AX101 911,477 -47,029 64,569 0.0039
2026-05-27 2025-09-30 13F/A-1 AMBARELLA SHS G037AX101 958,506 166,378 21.00 79,096 51.14 0.0048
2025-11-14 2025-09-30 13F AMBARELLA SHS G037AX101 958,506 166,378 79,096 0.0048
2025-08-15 2025-06-30 13F AMBARELLA SHS G037AX101 792,128 30,258 3.97 52,332 36.48 0.0034
2025-05-15 2025-03-31 13F AMBARELLA SHS G037AX101 761,870 -80,943 -9.60 38,345 -37.45 0.0027
2025-05-15 2024-12-31 13F/A-1 AMBARELLA SHS G037AX101 842,813 54,569 6.92 61,306 37.89 0.0043
2025-02-14 2024-12-31 13F AMBARELLA SHS G037AX101 842,813 54,569 61,306 0.0043
2025-05-14 2024-09-30 13F/A-2 AMBARELLA SHS G037AX101 788,244 -340,362 -30.16 44,461 -26.98 0.0032
2025-02-14 2024-09-30 13F/A-1 AMBARELLA SHS G037AX101 788,244 -340,362 44,461 0.0032
2024-11-14 2024-09-30 13F AMBARELLA SHS G037AX101 788,244 -340,362 44,461 0.0004
2025-05-14 2024-06-30 13F/A-2 AMBARELLA SHS G037AX101 1,128,606 -248,195 -18.03 60,888 -12.89 0.0047
2024-10-17 2024-06-30 13F/A-1 AMBARELLA SHS G037AX101 1,128,606 -248,195 60,888 0.0047
2024-08-14 2024-06-30 13F AMBARELLA SHS G037AX101 1,128,606 -248,195 60,888 0.0047
2024-10-17 2024-03-31 13F/A-2 AMBARELLA SHS G037AX101 1,376,801 -222,236 -13.90 69,900 -28.68 0.0056
2024-08-16 2024-03-31 13F/A-1 AMBARELLA SHS G037AX101 1,376,801 -222,236 69,900 0.0056
2024-05-15 2024-03-31 13F AMBARELLA SHS G037AX101 1,376,801 -222,236 69,900 0.0056
2024-08-16 2023-12-31 13F/A-1 AMBARELLA SHS G037AX101 1,599,037 1,194,153 294.94 98,005 356.45 0.0086
2024-02-13 2023-12-31 13F AMBARELLA SHS G037AX101 1,599,037 1,194,153 98,005 0.0086
2023-11-15 2023-09-30 13F AMBARELLA SHS G037AX101 404,884 104,722 34.89 21,471 -14.51 0.0022
2023-08-14 2023-06-30 13F AMBARELLA SHS G037AX101 300,162 32,102 11.98 25,115 21.01 0.0025
2023-05-15 2023-03-31 13F AMBARELLA SHS G037AX101 268,060 -60,830 -18.50 20,753 -23.26 0.0022
2023-02-14 2022-12-31 13F AMBARELLA SHS G037AX101 328,890 -94,870 -22.39 27,045 13.60 0.0031
2022-11-14 2022-09-30 13F AMBARELLA SHS G037AX101 423,760 29,318 7.43 23,807 -7.79 0.0032
2022-10-27 2022-06-30 13F/A-1 AMBARELLA SHS G037AX101 394,442 65,194 19.80 25,819 -25.26 0.0034
2022-08-15 2022-06-30 13F AMBARELLA SHS G037AX101 394,442 65,194 25,819 0.0034
2022-10-27 2022-03-31 13F/A-1 AMBARELLA SHS G037AX101 329,248 -50,912 -13.39 34,544 -55.21 0.0047
2022-05-13 2022-03-31 13F AMBARELLA SHS G037AX101 329,248 -50,912 34,544 0.0047
2022-02-14 2021-12-31 13F AMBARELLA SHS G037AX101 380,160 -117,431 -23.60 77,131 -0.47 0.0095
2021-11-15 2021-09-30 13F AMBARELLA SHS G037AX101 497,591 -192,713 -27.92 77,496 5.28 0.0104
2021-08-23 2021-06-30 13F/A-1 AMBARELLA SHS G037AX101 690,304 263,299 61.66 73,606 71.71 0.0097
2021-08-16 2021-06-30 13F AMBARELLA SHS G037AX101 690,304 263,299 73,606 0.0020
2021-05-17 2021-03-31 13F AMBARELLA SHS G037AX101 427,005 51,051 13.58 42,867 24.18 0.0063
2021-02-16 2020-12-31 13F AMBARELLA SHS G037AX101 375,954 -16,119 -4.11 34,521 68.73 0.0053
2020-11-13 2020-09-30 13F AMBARELLA SHS G037AX101 392,073 88,588 29.19 20,459 47.20 0.0040
2020-08-14 2020-06-30 13F AMBARELLA SHS G037AX101 303,485 -429,190 -58.58 13,899 -60.93 0.0031
2020-05-26 2020-03-31 13F/A-1 AMBARELLA SHS G037AX101 732,675 430,915 142.80 35,579 94.68 0.0097
2020-05-15 2020-03-31 13F AMBARELLA SHS G037AX101 732,675 430,915 35,579 2,733.2089
2020-02-14 2019-12-31 13F AMBARELLA SHS G037AX101 301,760 -610,853 -66.93 18,276 -68.13 0.0043
2019-11-14 2019-09-30 13F AMBARELLA SHS G037AX101 912,613 -599,248 -39.64 57,343 -14.05 0.0152
2019-08-14 2019-06-30 13F AMBARELLA SHS G037AX101 1,511,861 627,318 70.92 66,718 74.60 0.0178
2019-05-15 2019-03-31 13F AMBARELLA SHS G037AX101 884,543 -169,294 -16.06 38,212 3.66 0.0108
2019-02-14 2018-12-31 13F AMBARELLA SHS G037AX101 1,053,837 427,012 68.12 36,864 52.05 0.0110
2019-04-23 2018-09-30 13F/A-2 AMBARELLA SHS G037AX101 626,825 116,704 22.88 24,245 23.10 0.0061
2018-11-20 2018-09-30 13F/A-1 AMBARELLA SHS G037AX101 626,825 0 24,245 0.0061
2018-11-14 2018-09-30 13F AMBARELLA SHS G037AX101 626,825 116,704 24,245
2019-04-23 2018-06-30 13F/A-1 AMBARELLA SHS G037AX101 510,121 -125,354 -19.73 19,695 -36.74 0.0053
2018-08-14 2018-06-30 13F AMBARELLA SHS G037AX101 510,121 -125,354 19,695
2019-04-23 2018-03-31 13F/A-1 AMBARELLA SHS G037AX101 635,475 166,489 35.50 31,131 12.99 0.0086
2018-05-14 2018-03-31 13F AMBARELLA SHS G037AX101 635,475 166,489 31,131
2019-04-23 2017-12-31 13F/A-1 AMBARELLA SHS G037AX101 468,986 -182,207 -27.98 27,553 -13.66 0.0075
2018-02-14 2017-12-31 13F AMBARELLA SHS G037AX101 468,986 -182,207 27,553
2017-11-14 2017-09-30 13F AMBARELLA SHS G037AX101 651,193 253,037 63.55 31,914 65.10 0.0096
2017-08-11 2017-06-30 13F AMBARELLA SHS G037AX101 398,156 -51,060 -11.37 19,330 -21.35 0.0058
2017-05-22 2017-03-31 13F/A-1 AMBARELLA SHS G037AX101 449,216 -4,015 -0.89 24,576 0.18 0.0076
2017-05-12 2017-03-31 13F AMBARELLA SHS G037AX101 449,216 24,576
2017-02-22 2016-12-31 13F/A-1 AMBARELLA SHS G037AX101 453,231 -119,556 -20.87 24,533 -41.82 0.0080
2017-02-13 2016-12-31 13F AMBARELLA SHS G037AX101 453,231 24,533
2016-11-10 2016-09-30 13F AMBARELLA SHS G037AX101 572,787 121,695 26.98 42,164 83.95 0.0144
2016-08-12 2016-06-30 13F AMBARELLA SHS G037AX101 451,092 -9,122 -1.98 22,921 11.42 0.0083
2016-05-12 2016-03-31 13F AMBARELLA SHS G037AX101 460,214 -320,546 -41.06 20,571 -52.73 0.0079
2016-02-09 2015-12-31 13F AMBARELLA SHS G037AX101 780,760 85,621 12.32 43,519 8.33 0.0158
2016-02-08 2015-09-30 13F/A-1 AMBARELLA SHS G037AX101 695,139 166,454 31.48 40,172 -26.01 0.0148
2015-11-09 2015-09-30 13F AMBARELLA SHS G037AX101 695,139 40,172
2015-08-12 2015-06-30 13F AMBARELLA SHS G037AX101 528,685 -49,499 -8.56 54,291 24.03 0.0188
2015-05-14 2015-03-31 13F AMBARELLA SHS G037AX101 578,184 -150,006 -20.60 43,774 18.52 0.0161
2015-02-13 2014-12-31 13F AMBARELLA SHS G037AX101 728,190 291,777 66.86 36,934 93.80 0.0135
2014-12-16 2014-09-30 13F/A-1 AMBARELLA SHS G037AX101 436,413 230,793 112.24 19,058 197.32 0.0073
2014-11-14 2014-09-30 13F AMBARELLA SHS G037AX101 436,413 19,058
2014-08-12 2014-06-30 13F AMBARELLA SHS G037AX101 205,620 -77,425 -27.35 6,410 -15.22 0.0110
2014-05-13 2014-03-31 13F AMBARELLA SHS G037AX101 283,045 -159,333 -36.02 7,561 -49.57 0.0032
2014-02-13 2013-12-31 13F AMBARELLA SHS G037AX101 442,378 180,093 68.66 14,993 192.83 0.0064
2013-11-13 2013-09-30 13F AMBARELLA INC COM ST COM G037AX101 262,285 72,256 38.02 5,120 60.10 0.0024
2013-08-08 2013-06-30 13F AMBARELLA INC COM ST COM G037AX101 190,029 190,029 3,198 0.0016
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.