SiteOne Landscape Supply, Inc.
MX ˙ BMV ˙ US82982L1035
SecurityMX:SITE / SiteOne Landscape Supply, Inc.
InstitutionSimplex Trading, Llc
Latest Disclosed Ownership136 shares
Latest Disclosed Value $ 18,102
Simplex Trading, Llc ownership in SITE / SiteOne Landscape Supply, Inc.

On May 14, 2026 - Simplex Trading, Llc filed a 13F-HR form disclosing ownership of 136 shares of SiteOne Landscape Supply, Inc. (MX:SITE) valued at $18,102 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 0 shares of SiteOne Landscape Supply, Inc..

Simplex Trading, 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 900 of underlying shares valued at $119,799 USD and put 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.

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)
2026-05-14 2026-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 136 136 18 0.0000
2026-02-11 2025-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 0 -100.00 0
2025-11-12 2025-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 39 39 0 0.0000
2025-02-11 2024-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 0 -481 -100.00 0 0.0000
2024-11-08 2024-09-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 481 481 0 0.0000
2024-04-25 2024-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 0 -284 -100.00 0 0.0000
2024-02-02 2023-12-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 284 284 0 0.0000
2018-07-30 2018-06-30 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 0 -184 -100.00 0 -100.00
2018-04-26 2018-03-31 13F SITEONE LANDSCAPE SUPPLY COM 82982L103 184 -81,264 -99.77 14 -98.08 0.0006
2018-01-10 2017-12-31 13F DDR COM 23317H102 81,448 81,448 729 0.0314
2017-07-12 2017-06-30 13F DDR COM 23317H102 0 -56,451 -100.00 0 -100.00
2017-04-21 2017-03-31 13F DDR COM 23317H102 56,451 47,586 536.79 707 423.70 0.0306
2017-01-11 2016-12-31 13F DDR COM 23317H102 8,865 8,865 135 0.0081
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
(%)
2026-05-14 2026-03-31 13F SITEONE LANDSCAPE SUPPLY CALL Call 900 120 n/a n/a n/a
2026-02-11 2025-12-31 13F SITEONE LANDSCAPE SUPPLY CALL Call 0 -100.00 0 n/a n/a n/a
2025-11-12 2025-09-30 13F SITEONE LANDSCAPE SUPPLY CALL Call 200 -90.00 0 n/a n/a n/a
2025-08-05 2025-06-30 13F SITEONE LANDSCAPE SUPPLY CALL Call 2,000 5.26 0 n/a n/a n/a
2025-05-12 2025-03-31 13F SITEONE LANDSCAPE SUPPLY CALL Call 1,900 -5.00 0 n/a n/a n/a
2025-02-11 2024-12-31 13F SITEONE LANDSCAPE SUPPLY CALL Call 2,000 -39.39 0 n/a n/a n/a
2024-11-08 2024-09-30 13F SITEONE LANDSCAPE SUPPLY CALL Call 3,300 -15.38 0 n/a n/a n/a
2024-07-25 2024-06-30 13F SITEONE LANDSCAPE SUPPLY CALL Call 3,900 -17.02 0 n/a n/a n/a
2024-04-25 2024-03-31 13F SITEONE LANDSCAPE SUPPLY CALL Call 4,700 422.22 1 n/a n/a n/a
2024-02-02 2023-12-31 13F SITEONE LANDSCAPE SUPPLY CALL Call 900 0 n/a n/a n/a
2020-02-05 2019-12-31 13F SITEONE LANDSCAPE SUPPLY CALL Call 0 -100.00 0 n/a n/a n/a
2019-10-15 2019-09-30 13F SITEONE LANDSCAPE SUPPLY CALL Call 1 -50.00 0 -100.00 n/a n/a n/a
2019-07-26 2019-06-30 13F SITEONE LANDSCAPE SUPPLY CALL Call 2 1 n/a n/a n/a
2019-01-16 2018-12-31 13F DDR CALL Call 0 -100.00 0 -100.00 n/a n/a n/a
2018-10-23 2018-09-30 13F DDR CALL Call 498 555.26 645 1,512.50 n/a n/a n/a
2018-07-30 2018-06-30 13F DDR CALL Call 76 24.59 40 1,900.00 n/a n/a n/a
2018-04-26 2018-03-31 13F DDR CALL Call 61 3.39 2 -50.00 n/a n/a n/a
2018-01-10 2017-12-31 13F DDR CALL Call 59 -24.36 4 n/a n/a n/a
2017-10-25 2017-09-30 13F DDR CALL Call 78 56.00 0 -100.00 n/a n/a n/a
2017-07-12 2017-06-30 13F DDR CALL Call 50 138.10 2 n/a n/a n/a
2017-04-21 2017-03-31 13F DDR CALL Call 21 0.00 0 -100.00 n/a n/a n/a
2017-01-11 2016-12-31 13F DDR CALL Call 21 320.00 2 n/a n/a n/a
2016-10-07 2016-09-30 13F DDR CALL Call 5 0 n/a n/a n/a
Disclosed Put 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
(%)
2025-05-12 2025-03-31 13F SITEONE LANDSCAPE SUPPLY PUT Put 0 -100.00 0 n/a n/a n/a
2025-02-11 2024-12-31 13F SITEONE LANDSCAPE SUPPLY PUT Put 200 0.00 0 n/a n/a n/a
2024-11-08 2024-09-30 13F SITEONE LANDSCAPE SUPPLY PUT Put 200 0.00 0 n/a n/a n/a
2024-07-25 2024-06-30 13F SITEONE LANDSCAPE SUPPLY PUT Put 200 0 n/a n/a n/a
2019-01-16 2018-12-31 13F DDR PUT Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-10-23 2018-09-30 13F DDR PUT Put 122 293.55 124 629.41 n/a n/a n/a
2018-07-30 2018-06-30 13F DDR PUT Put 31 1,450.00 17 1,600.00 n/a n/a n/a
2018-04-26 2018-03-31 13F SITEONE LANDSCAPE SUPPLY PUT Put 2 -99.80 1 -99.10 n/a n/a n/a
2018-04-26 2018-03-31 13F DDR PUT Put 101 5 n/a n/a n/a
2018-01-10 2017-12-31 13F DDR PUT Put 1,018 102.79 111 81.97 n/a n/a n/a
2017-10-25 2017-09-30 13F DDR PUT Put 502 -30.18 61 -42.45 n/a n/a n/a
2017-07-12 2017-06-30 13F DDR PUT Put 719 15.97 106 657.14 n/a n/a n/a
2017-04-21 2017-03-31 13F DDR PUT Put 620 -4.62 14 -39.13 n/a n/a n/a
2017-01-11 2016-12-31 13F DDR PUT Put 650 23 n/a n/a n/a
2016-04-14 2016-03-31 13F DDR PUT Put 0 -100.00 0 n/a n/a n/a
2016-01-20 2015-12-31 13F DDR PUT Put 1 0 n/a n/a n/a
2015-07-08 2015-06-30 13F DDR PUT Put 0 -100.00 0 n/a n/a n/a
2015-04-21 2015-03-31 13F DDR PUT Put 1 0 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.