SiteOne Landscape Supply, Inc.
MX ˙ BMV ˙ US82982L1035
SecurityMX:SITE / SiteOne Landscape Supply, Inc.
InstitutionAsset Management One Co., Ltd.
Latest Disclosed Ownership30,942 shares
Latest Disclosed Value $ 4,113,426
Asset Management One Co., Ltd. reports 145.59% increase in ownership of SITE / SiteOne Landscape Supply, Inc.

On May 8, 2026 - Asset Management One Co., Ltd. filed a 13F-HR form disclosing ownership of 30,942 shares of SiteOne Landscape Supply, Inc. (MX:SITE) valued at $4,113,426 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 12,599 shares of SiteOne Landscape Supply, Inc.. This represents a change in shares of 145.59% 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)
2026-05-08 2026-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 30,942 18,343 145.59 4,113 158.03 0.0121
2026-01-27 2025-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 12,599 -798 -5.96 1,594 -7.49 0.0044
2025-10-22 2025-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 13,397 -211 -1.55 1,724 4.74 0.0050
2025-07-31 2025-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 13,608 -22,526 -62.34 1,645 -62.58 0.0052
2025-04-23 2025-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 36,134 -2,021 -5.30 4,396 -13.12 0.0152
2025-01-30 2024-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 38,155 -449 -1.16 5,060 -13.21 0.0174
2024-10-30 2024-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 38,604 -4,351 -10.13 5,831 11.47 0.0207
2024-07-18 2024-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 42,955 6,682 18.42 5,231 -17.39 0.0200
2024-05-02 2024-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 36,273 -1,861 -4.88 6,331 1.23 0.0244
2024-01-24 2023-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 38,134 -131 -0.34 6,255 -0.18 0.0252
2023-10-19 2023-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 38,265 -2,893 -7.03 6,265 -8.77 0.0279
2023-07-31 2023-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 41,158 -394 -0.95 6,867 22.04 0.0291
2023-04-25 2023-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 41,552 2,332 5.95 5,628 20.57 0.0255
2023-02-06 2022-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 39,220 1,165 3.06 4,668 19.15 0.0227
2022-11-04 2022-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 38,055 -1,683 -4.24 3,917 -16.52 0.0199
2022-07-29 2022-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 39,738 558 1.42 4,692 -26.85 0.0220
2022-05-13 2022-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 39,180 19,628 100.39 6,414 37.37 0.0250
2022-02-09 2021-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 19,552 19,552 4,669 0.0163
2019-02-13 2018-12-31 13F DDR COM 23317H854 0 -345,947 -100.00 0 -100.00
2018-11-14 2018-09-30 13F DDR COM 23317H854 345,947 14,315 4.32 4,560 -23.43 0.0094
2018-08-14 2018-06-30 13F DDR COM 23317H854 331,632 -340,373 -50.65 5,955 20.89 0.0130
2018-05-14 2018-03-31 13F DDR COM 23317H102 672,005 -9,259 -1.36 4,926 -18.77 0.0111
2018-02-14 2017-12-31 13F DDR COM 23317H102 681,264 -7,054 -1.02 6,064 -4.35 0.0134
2017-11-14 2017-09-30 13F DDR COM 23317H102 688,318 21,415 3.21 6,340 3.14 0.0149
2017-08-14 2017-06-30 13F DDR COM 23317H102 666,903 -73,270 -9.90 6,147 -33.60 0.0157
2017-05-11 2017-03-31 13F DDR COM 23317H102 740,173 -98,118 -11.70 9,257 -26.98 0.0243
2017-05-02 2016-12-31 13F/A-1 DDR COM 23317H102 838,291 819,157 4,281.16 12,677 2,492.43 0.0324
2017-02-13 2016-12-31 13F DDR COM 23317H102 838,291 12,677
2016-11-07 2016-09-30 13F DDR CORP PFD 6.5 COM 23317H607 19,134 11,134 139.18 489 79.78 0.0073
2016-11-07 2016-09-30 13F DDR CORP PFD 6.25 COM 23317H805 48,030 28,896 1,253 18,613.1938
2016-11-07 2016-09-30 13F DDR COM 23317H102 957,630 -74,657 16,902 0.2511
2016-08-03 2016-06-30 13F SITEONE LANDSCAPE SUPPLY Com 82982L103 8,000 -16,634 -67.52 272 -57.43 0.0041
2016-08-03 2016-06-30 13F DDR CORP PFD 6.5 COM 23317H607 22,134 -1,044,127 574 8,612.3171
2016-08-03 2016-06-30 13F DDR CORP PFD 6.25 COM 23317H805 48,030 25,896 1,280 19,205.1672
2016-08-03 2016-06-30 13F DDR COM 23317H102 1,032,287 -33,974 18,632 0.2796
2016-05-05 2016-03-31 13F DDR CORP PFD 6.5 COM 23317H607 24,634 -7,466 -23.26 639 -21.11 0.0093
2016-05-05 2016-03-31 13F DDR CORP PFD 6.25 COM 23317H805 48,030 23,396 1,256 18,333.9651
2016-05-05 2016-03-31 13F DDR Com 23317H102 1,066,261 62,307 18,703 0.2730
2016-01-28 2015-12-31 13F DDR CORP PFD 6.5 COM 23317H607 32,100 0 0.00 810 0.50 0.0121
2016-01-28 2015-12-31 13F DDR CORP PFD 6.25 COM 23317H805 48,030 15,930 1,200 17,910.9797
2016-01-28 2015-12-31 13F DDR Com 23317H102 1,003,954 -18,370 17,106 0.2553
2015-11-12 2015-09-30 13F DDR CORP PFD 6.5 COM 23317H607 32,100 -17,000 -34.62 806 -35.21 0.0123
2015-11-12 2015-09-30 13F DDR CORP PFD 6.25 COM 23317H805 48,030 15,930 1,188 18,079.9105
2015-11-12 2015-09-30 13F DDR Com 23317H102 1,022,324 -269,827 15,672 0.2385
2015-08-06 2015-06-30 13F DDR CORP PFD 6.5 COM 23317H607 49,100 0 0.00 1,244 -0.40 0.0172
2015-08-06 2015-06-30 13F DDR CORP PFD 6.25 COM 23317H805 48,030 -1,070 1,205 16,696.5149
2015-08-06 2015-06-30 13F DDR Com 23317H102 1,292,151 -64,546 20,092 0.2784
2015-05-11 2015-03-31 13F DDR CORP PFD 6.5 COM 23317H607 49,100 -763,917 -93.96 1,249 -91.77 0.0154
2015-05-11 2015-03-31 13F DDR CORP PFD 6.25 COM 23317H805 39,832 -9,268 1,015 12,532.0060
2015-05-11 2015-03-31 13F DDR Com 23317H102 1,356,697 543,680 25,518 0.3151
2015-02-09 2014-12-31 13F DDR Com 23317H102 813,017 -81,850 -9.15 15,184 2.03 0.1971
2014-11-05 2014-09-30 13F DDR Com 23317H102 894,867 -27,563 -2.99 14,882 -8.95 0.2055
2014-08-12 2014-06-30 13F DDR Com 23317H102 922,430 -38,052 -3.96 16,344 4.25 0.2440
2014-05-05 2014-03-31 13F DDR Com 23317H102 960,482 -21,002 -2.14 15,677 3.79 0.2471
2014-02-05 2013-12-31 13F/A-1 DDR COM 23317H102 981,484 19,614 2.04 15,104 -1.83 0.2341
2014-01-29 2013-12-31 13F DDR COM 23317H102 981,484 15,104
2014-02-05 2013-09-30 13F/A-1 DDR COM 23317H102 961,870 8,403 0.88 15,386 -3.59 0.2315
2013-11-06 2013-09-30 13F DDR Com 23317H102 961,870 15,386
2014-02-12 2013-06-30 13F/A-1 DDR COM 23317H102 953,467 953,467 15,959 0.2592
2013-08-05 2013-06-30 13F DDR Com 23317H102 953,467 15,959
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.