SiteOne Landscape Supply, Inc.
MX ˙ BMV ˙ US82982L1035
SecurityMX:SITE / SiteOne Landscape Supply, Inc.
InstitutionJane Street Group, Llc
Latest Disclosed Ownership277,119 shares
Latest Disclosed Value $ 36,887,311
Jane Street Group, Llc ownership in SITE / SiteOne Landscape Supply, Inc.

On May 12, 2026 - Jane Street Group, Llc filed a 13F-HR form disclosing ownership of 277,119 shares of SiteOne Landscape Supply, Inc. (MX:SITE) valued at $36,887,311 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 189,162 shares of SiteOne Landscape Supply, Inc.. This represents a change in shares of 46.50% during the quarter.

Jane Street Group, Llc has a history of taking positions in derivatives of the underlying security (SITE) in the form of stock options. The firm currently holds call options representing 22,800 of underlying shares valued at $3,034,908 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.

MX:SITE / SiteOne Landscape Supply, 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)
2026-05-12 2026-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 277,119 87,957 46.50 36,887 56.55 0.0047
2026-02-12 2025-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 189,162 117,869 165.33 23,562 156.61 0.0036
2025-11-14 2025-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 71,293 -51,942 -42.15 9,183 -38.39 0.0014
2025-08-14 2025-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 123,235 67,264 120.18 14,904 119.27 0.0029
2025-05-19 2025-03-31 13F/A-1 SITEONE LANDSCAPE SUPPLY COM 82982L103 55,971 55,971 6,797 0.0017
2025-05-14 2025-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 55,971 55,971 6,797 0.0014
2025-02-14 2024-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 0 -7,719 -100.00 0 -100.00
2024-11-15 2024-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 7,719 -18,077 -70.08 1,165 -62.82 0.0003
2024-08-15 2024-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 25,796 12,025 87.32 3,132 30.30 0.0007
2024-05-16 2024-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 13,771 -100,174 -87.91 2,404 -87.02 0.0005
2024-02-15 2023-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 113,945 108,239 1,896.93 18,516 1,886.70 0.0048
2023-11-15 2023-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 5,706 -17,930 -75.86 933 -76.43 0.0003
2023-08-14 2023-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 23,636 13,604 135.61 3,956 188.06 0.0013
2023-05-16 2023-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 10,032 -3,112 -23.68 1,373 -10.96 0.0006
2023-02-15 2022-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 13,144 -7,679 -36.88 1,542 -28.91 0.0007
2022-11-15 2022-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 20,823 11,172 115.76 2,169 89.10 0.0009
2022-08-16 2022-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 9,651 2,552 35.95 1,147 -0.09 0.0005
2022-05-17 2022-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 7,099 4,269 150.85 1,148 67.35 0.0004
2022-02-15 2021-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 2,830 586 26.11 686 53.13 0.0002
2021-11-16 2021-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 2,244 -70,608 -96.92 448 -96.37 0.0002
2021-08-16 2021-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 72,852 66,922 1,128.53 12,331 1,118.48 0.0048
2021-05-18 2021-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 5,930 3,622 156.93 1,012 284.79 0.0005
2020-08-17 2020-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 2,308 -15,927 -87.34 263 7.79 0.0002
2018-11-14 2018-09-30 13F DDR COM 23317H854 18,235 -19,250 -51.35 244 -63.64 0.0005
2018-08-15 2018-06-30 13F DDR COM 23317H854 37,485 37,485 105.57 671 175.00 0.0016
2018-05-15 2018-03-31 13F DDR COM 23317H102 0 -192,983 -100.00 0 -100.00
2018-02-15 2017-12-31 13F DDR COM 23317H102 192,983 192,983 1,729 0.0050
2017-08-14 2017-06-30 13F DDR COM 23317H102 0 -26,341 -100.00 0 -100.00
2017-05-15 2017-03-31 13F DDR COM 23317H102 26,341 -83,297 -75.97 330 -80.29 0.0015
2017-02-15 2016-12-31 13F DDR COM 23317H102 109,638 109,638 316.23 1,674 407.27 0.0073
2016-11-14 2016-09-30 13F DDR COM 23317H102 0 -24,410 -100.00 0 -100.00
2016-08-15 2016-06-30 13F DDR COM 23317H102 24,410 24,410 0.00 443 0.0022
2016-05-17 2016-03-31 13F DDR COM 23317H102 0 -12,154 -100.00 0 -100.00
2016-02-16 2015-12-31 13F DDR COM 23317H102 12,154 12,154 0.00 205 0.0013
2015-11-16 2015-09-30 13F DDR COM 23317H102 0 -40,647 -100.00 0 -100.00
2015-08-14 2015-06-30 13F DDR COM 23317H102 40,647 40,647 0.00 628 0.0041
2014-08-14 2014-06-30 13F DDR COM 23317H102 0 -11,678 -100.00 0 -100.00
2014-05-15 2014-03-31 13F DDR COM 23317H102 11,678 11,678 192 0.0021
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
(%)
2026-05-12 2026-03-31 13F SITEONE LANDSCAPE SUPPLY COM Call 22,800 3,035 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.