安霸公司
US ˙ NasdaqGS ˙ KYG037AX1015

SecurityAMBA / Ambarella, Inc.
InstitutionQUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series
Latest Disclosed Ownership70,587 shares
Latest Disclosed Value $ 4,663,330
QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series reports 9.31% increase in ownership of AMBA / Ambarella, Inc.

On August 26, 2025 - QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series filed a NPORT-P form disclosing ownership of 70,587 shares of Ambarella, Inc. (US:AMBA) valued at $4,663,330 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 28, 2025 disclosing 64,573 shares of Ambarella, Inc.. This represents a change in shares of 9.31% during the quarter. The current value of the position is $4,483,686 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)
2025-08-26 2025-06-30 NP Ambarella EC KYG037AX1015 70,587 6,014 9.31 4,663 43.52 0.1047
2025-05-28 2025-03-31 NP Ambarella EC KYG037AX1015 64,573 686 1.07 3,250 -30.08 0.0780
2025-02-25 2024-12-31 NP Ambarella EC KYG037AX1015 63,887 -10,204 -13.77 4,647 11.20 0.1015
2024-11-26 2024-09-30 NP Ambarella EC KYG037AX1015 74,091 1,123 1.54 4,179 6.17 0.0790
2024-08-26 2024-06-30 NP Ambarella EC KYG037AX1015 72,968 6,001 8.96 3,937 15.80 0.0802
2024-05-28 2024-03-31 NP Ambarella EC KYG037AX1015 66,967 -2,120 -3.07 3,400 -19.72 0.0709
2024-02-26 2023-12-31 NP Ambarella EC KYG037AX1015 69,087 4,747 7.38 4,234 24.13 0.0904
2023-11-28 2023-09-30 NP Ambarella EC KYG037AX1015 64,340 990 1.56 3,412 -35.64 0.0890
2023-08-25 2023-06-30 NP Ambarella EC KYG037AX1015 63,350 4,398 7.46 5,300 16.13 0.1257
2023-05-26 2023-03-31 NP Ambarella EC KYG037AX1015 58,952 1,473 2.56 4,564 -3.43 0.1215
2023-02-24 2022-12-31 NP Ambarella EC KYG037AX1015 57,479 -528 -0.91 4,726 45.06 0.1300
2022-11-25 2022-09-30 NP Ambarella EC KYG037AX1015 58,007 1,722 3.06 3,259 -11.56 0.0934
2022-08-25 2022-06-30 NP Ambarella EC KYG037AX1015 56,285 1,314 2.39 3,684 -36.12 0.1017
2022-05-26 2022-03-31 NP Ambarella EC KYG037AX1015 54,971 922 1.71 5,768 -47.41 0.1344
2022-02-25 2021-12-31 NP Ambarella EC KYG037AX1015 54,049 876 1.65 10,966 32.42 0.2378
2021-11-24 2021-09-30 NP Ambarella EC KYG037AX1015 53,173 -1,048 -1.93 8,281 43.25 0.1824
2021-08-26 2021-06-30 NP Ambarella EC KYG037AX1015 54,221 2,920 5.69 5,782 12.25 0.1240
2021-05-27 2021-03-31 NP Ambarella EC KYG037AX1015 51,301 -860 -1.65 5,150 7.54 0.1168
2021-02-25 2020-12-31 NP Ambarella EC KYG037AX1015 52,161 -1,920 -3.55 4,789 69.76 0.1227
2020-11-25 2020-09-30 NP Ambarella EC KYG037AX1015 54,081 -2,118 -3.77 2,822 9.64 0.0906
2020-08-27 2020-06-30 NP Ambarella EC KYG037AX1015 56,199 3,512 6.67 2,574 0.59 0.0841
2020-06-01 2020-03-31 NP Ambarella EC KYG037AX1015 52,687 4,516 9.37 2,558 -15.47 0.1046
2019-11-27 2019-09-30 NP Ambarella EC KYG037AX1015 48,171 48,171 3,027 0.1001
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.