亞馬遜公司
MX ˙ BMV ˙ US0231351067
SecurityMX:AMZN / Amazon.com, Inc.
InstitutionAldebaran Financial Inc.
Latest Disclosed Ownership21,771 shares
Latest Disclosed Value $ 4,534,180
Aldebaran Financial Inc. reports 1.02% increase in ownership of AMZN / Amazon.com, Inc.

On May 14, 2026 - Aldebaran Financial Inc. filed a 13F-HR form disclosing ownership of 21,771 shares of Amazon.com, Inc. (MX:AMZN) valued at $4,534,180 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 21,551 shares of Amazon.com, Inc.. This represents a change in shares of 1.02% during the quarter.

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)
2026-05-14 2026-03-31 13F AMAZON COM COM 023135106 21,771 220 1.02 4,534 -9.52 4.3064
2026-01-23 2025-12-31 13F AMAZON COM COM 023135106 21,551 21,551 5,011 4.6378
2022-08-01 2022-06-30 13F AMAZON COM COM 023135106 0 -777 -100.00 0 -100.00
2022-04-18 2022-03-31 13F AMAZON COM COM 023135106 777 0 0.00 382 6.11 0.2968
2022-02-16 2021-12-31 13F AMAZON COM COM 023135106 777 1 0.13 360 24.57 0.2658
2021-10-21 2021-09-30 13F AMAZON COM COM 023135106 776 0 0.00 289 -3.02 0.2335
2021-07-16 2021-06-30 13F AMAZON COM COM 023135106 776 1 0.13 298 7.19 0.2449
2021-05-03 2021-03-31 13F AMAZON COM COM 023135106 775 -1,457 -65.28 278 -96.18 0.2453
2021-02-05 2020-12-31 13F AMAZON COM COM 023135106 2,232 20 0.90 7,271 4.38 6.7658
2020-10-19 2020-09-30 13F AMAZON COM COM 023135106 2,212 106 5.03 6,966 19.88 7.2405
2020-07-20 2020-06-30 13F AMAZON COM COM 023135106 2,106 -638 -23.25 5,811 8.60 6.8268
2020-04-24 2020-03-31 13F AMAZON COM COM 023135106 2,744 -77 -2.73 5,351 2.65 5.2236
2020-02-10 2019-12-31 13F AMAZON COM COM 023135106 2,821 -652 -18.77 5,213 -13.52 3.9585
2019-10-21 2019-09-30 13F AMAZON COM COM 023135106 3,473 18 0.52 6,028 -7.86 4.0235
2019-08-14 2019-06-30 13F AMAZON COM COM 023135106 3,455 -53 -1.51 6,542 4.72 4.5195
2019-04-23 2019-03-31 13F AMAZON COM COM 023135106 3,508 -6 -0.17 6,247 18.36 4.3929
2019-02-14 2018-12-31 13F AMAZON COM COM 023135106 3,514 15 0.43 5,278 -24.69 4.0167
2018-11-08 2018-09-30 13F AMAZON COM COM 023135106 3,499 -199 -5.38 7,008 11.49 4.5480
2018-08-10 2018-06-30 13F AMAZON COM COM 023135106 3,698 -85 -2.25 6,286 14.81 4.3147
2018-05-12 2018-03-31 13F/A-1 AMAZON COM COM 023135106 3,783 36 0.96 5,475 24.94 3.6718
2018-04-24 2018-03-31 13F AMAZON COM COM 023135106 3,783 36 5,475
2018-03-02 2017-12-31 13F AMAZON COM COM 023135106 3,747 186 5.22 4,382 28.02 2.9119
2017-11-17 2017-09-30 13F AMAZON COM COM 023135106 3,561 43 1.22 3,423 0.53 2.3614
2017-08-28 2017-06-30 13F AMAZON COM COM 023135106 3,518 -23 -0.65 3,405 8.47 2.4830
2017-06-16 2017-03-31 13F AMAZON COM COM 023135106 3,541 170 5.04 3,139 24.17 2.3887
2017-03-23 2016-12-31 13F AMAZON COM COM 023135106 3,371 1,689 100.42 2,528 79.55 2.0013
2016-12-16 2016-09-30 13F AMAZON COM COM 023135106 1,682 62 3.83 1,408 16.56 1.1162
2016-08-25 2016-06-30 13F AMAZON COM COM 023135106 1,620 140 9.46 1,208 37.43 0.9708
2016-05-16 2016-03-31 13F AMAZON COM COM 023135106 1,480 1,480 0.00 879 0.7668
2016-02-17 2015-12-31 13F AMAZON COM COM 023135106 0 -377 -100.00 0 -100.00
2014-02-13 2013-12-31 13F AMAZON COM COM 023135106 377 377 309 0.2938
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.