Amazon.com, Inc.
CL ˙ SNSE ˙ US0231351067
SecurityCL:AMZNCL / Amazon.com, Inc.
InstitutionWestpac Banking Corp
Latest Disclosed Ownership218,364 shares
Latest Disclosed Value $ 45,478,670
Westpac Banking Corp ownership in AMZNCL / Amazon.com, Inc.

On May 11, 2026 - Westpac Banking Corp filed a 13F-HR form disclosing ownership of 218,364 shares of Amazon.com, Inc. (CL:AMZNCL) valued at $45,478,670 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 245,711 shares of Amazon.com, Inc.. This represents a change in shares of -11.13% during the quarter.

Westpac Banking Corp has a history of taking positions in derivatives of the underlying security (AMZNCL) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

CL:AMZNCL / Amazon.com, Inc. Historical Put/Call Ratio
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)
2026-05-11 2026-03-31 13F AMAZON COM COM 023135106 218,364 -27,347 -11.13 45,479 -19.81 1.5840
2026-02-10 2025-12-31 13F AMAZON COM COM 023135106 245,711 -16,603 -6.33 56,715 -1.53 3.5825
2025-11-14 2025-09-30 13F/A-1 AMAZON.COM INC USD 0.01 COM 023135106 262,314 -17,526 -6.26 57,596 -6.19 3.5695
2025-11-12 2025-09-30 13F AMAZON.COM INC USD 0.01 COM 023135106 262,314 -17,526 57,596 1.4456
2025-08-11 2025-06-30 13F AMAZON COM COM 023135106 279,840 13,622 5.12 61,394 21.21 4.1041
2025-05-13 2025-03-31 13F AMAZON COM COM 023135106 266,218 -1,815 -0.68 50,651 -13.86 3.7265
2025-02-12 2024-12-31 13F AMAZON COM COM 023135106 268,033 15,136 5.99 58,804 24.79 3.9020
2024-11-08 2024-09-30 13F AMAZON COM COM 023135106 252,897 -10,788 -4.09 47,122 -7.53 3.1590
2024-08-14 2024-06-30 13F/A-1 AMAZON COM COM 023135106 263,685 -47,917 -15.38 50,957 -9.34 4.0412
2024-08-13 2024-06-30 13F AMAZON COM COM 023135106 115,719 -195,883 50,957 1.7520
2024-05-09 2024-03-31 13F AMAZON COM COM 023135106 311,602 -12,258 -3.78 56,207 14.22 4.2822
2024-02-08 2023-12-31 13F AMAZON COM COM 023135106 323,860 10,713 3.42 49,207 23.61 4.0564
2023-11-13 2023-09-30 13F AMAZON COM COM 023135106 313,147 28,721 10.10 39,807 7.36 2.9785
2023-08-10 2023-06-30 13F AMAZON COM COM 023135106 284,426 -913,683 -76.26 37,078 -70.04 2.6165
2023-05-04 2023-03-31 13F AMAZON COM COM 023135106 1,198,109 115,738 10.69 123,753 36.11 1.6636
2023-02-06 2022-12-31 13F AMAZON COM COM 023135106 1,082,371 -447,522 -29.25 90,919 -47.41 1.3440
2022-11-08 2022-09-30 13F AMAZON COM COM 023135106 1,529,893 257,225 20.21 172,878 27.90 2.6354
2022-08-10 2022-06-30 13F AMAZON COM COM 023135106 1,272,668 1,197,997 1,604.37 135,170 -44.47 1.7610
2022-05-11 2022-03-31 13F AMAZON COM COM 023135106 74,671 -1,201 -1.58 243,424 -3.78 2.7927
2022-02-08 2021-12-31 13F AMAZON COM COM 023135106 75,872 237 0.31 252,983 1.82 2.6208
2021-10-27 2021-09-30 13F AMAZON COM COM 023135106 75,635 11,620 18.15 248,464 12.82 2.6560
2021-08-11 2021-06-30 13F AMAZON COM COM 023135106 64,015 -4,320 -6.32 220,222 4.16 2.2111
2021-05-13 2021-03-31 13F AMAZON COM COM 023135106 68,335 6,808 11.07 211,434 5.51 2.3330
2021-02-11 2020-12-31 13F AMAZON COM COM 023135106 61,527 -5,933 -8.79 200,389 -5.66 2.2742
2020-11-10 2020-09-30 13F AMAZON COM COM 023135106 67,460 3,521 5.51 212,413 20.42 2.8783
2020-08-12 2020-06-30 13F AMAZON COM COM 023135106 63,939 -5,844 -8.37 176,396 29.65 2.6294
2020-05-14 2020-03-31 13F AMAZON COM COM 023135106 69,783 7,285 11.66 136,057 17.81 2.3444
2020-02-11 2019-12-31 13F AMAZON COM COM 023135106 62,498 -61 -0.10 115,486 6.34 1.4865
2019-11-13 2019-09-30 13F AMAZON COM COM 023135106 62,559 -6,427 -9.32 108,597 -16.87 1.5099
2019-08-01 2019-06-30 13F AMAZON COM COM 023135106 68,986 5,755 9.10 130,634 16.02 1.9949
2019-05-14 2019-03-31 13F AMAZON COM COM 023135106 63,231 1,668 2.71 112,599 21.77 1.8587
2019-02-07 2018-12-31 13F AMAZON COM COM 023135106 61,563 -5,799 -8.61 92,466 -31.47 1.5758
2018-11-13 2018-09-30 13F AMAZON COM COM 023135106 67,362 -3,232 -4.58 134,926 12.44 2.3132
2018-07-18 2018-06-30 13F AMAZON COM COM 023135106 70,594 8,699 14.05 119,996 33.95 2.3056
2018-05-01 2018-03-31 13F AMAZON COM COM 023135106 61,895 65 0.11 89,583 23.89 1.7890
2018-01-18 2017-12-31 13F AMAZON COM COM 023135106 61,830 1,685 2.80 72,308 25.06 1.6430
2017-10-30 2017-09-30 13F AMAZON COM COM 023135106 60,145 -27,004 -30.99 57,820 -31.46 1.2730
2017-08-09 2017-06-30 13F AMAZON COM COM 023135106 87,149 -55,640 -38.97 84,360 -33.36 1.8572
2017-05-18 2017-03-31 13F/A-1 AMAZON COM COM 023135106 142,789 11,116 8.44 126,588 11.21 1.0145
2017-05-11 2017-03-31 13F AMAZON COM COM 023135106 136,189 88,973
2017-02-09 2016-12-31 13F AMAZON COM COM 023135106 131,673 -28,801 -17.95 113,824 -15.29 1.0734
2016-11-10 2016-09-30 13F AMAZON COM COM 023135106 160,474 5,475 3.53 134,366 25.36 1.4514
2016-08-10 2016-06-30 13F AMAZON COM COM 023135106 154,999 -59,111 -27.61 107,182 18.65 1.1734
2016-05-13 2016-03-31 13F AMAZON COM COM 023135106 214,110 88,385 70.30 90,334 6.30 0.9820
2016-02-11 2015-12-31 13F AMAZON COM COM 023135106 125,725 28,489 29.30 84,982 70.75 0.9401
2015-11-16 2015-09-30 13F/A-1 AMAZON COM COM 023135106 97,236 49,251 102.64 49,770 138.94 0.5478
2015-11-12 2015-09-30 13F AMAZON COM COM 023135106 97,236 49,770
2015-08-12 2015-06-30 13F AMAZON COM COM 023135106 47,985 -16,003 -25.01 20,830 -17.44 0.2037
2015-05-12 2015-03-31 13F AMAZON COM COM 023135106 63,988 -22,055 -25.63 25,229 -5.52 0.2192
2015-02-11 2014-12-31 13F AMAZON COM COM 023135106 86,043 2,771 3.33 26,703 -0.55 0.2540
2014-11-12 2014-09-30 13F AMAZON COM COM 023135106 83,272 3,143 3.92 26,850 3.17 0.2617
2014-08-11 2014-06-30 13F AMAZON COM COM 023135106 80,129 -18,536 -18.79 26,024 -21.61 0.2507
2014-05-12 2014-03-31 13F AMAZON COM COM 023135106 98,665 33,278 50.89 33,200 27.33 0.3536
2014-02-13 2013-12-31 13F AMAZON COM COM 023135106 65,387 37,885 137.75 26,074 203.24 0.2983
2013-11-12 2013-09-30 13F AMAZON COM COM 023135106 27,502 -21,708 -44.11 8,598 -35.60 0.1075
2013-08-14 2013-06-30 13F AMAZON COM COM 023135106 49,210 49,210 13,351 0.2041
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2017-02-09 2016-12-31 13F AMAZON COM CALL Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-11-10 2016-09-30 13F AMAZON COM CALL Call 200 2 n/a n/a n/a
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.