Ratings by William Blair (Ryan Merkel)

Date CompanySymbol Type Rating
(Past)
PT
(Past)
Start $
(End $)
% Chg. Details
10/8/2026 Latham Group Inc. SWIM Downgrade Market Perform
(Outperform)
6.37
(6.12)
-3.92% Details
10/7/2026 SiteOne Landscape Supply SITE Maintain Market Perform
(N/A)
 
 
  Details
9/28/2026 Acuity Brands AYI Downgrade Market Perform
(Outperform)
319.42
(303.25)
-5.06% Details
7/29/2026 Lennox International LII Maintain Outperform
(N/A)
 
 
  Details
7/23/2026 Core & Main Inc. CNM New Coverage Market Perform
(N/A)
43.75
(41.99)
-4.02% Details
6/4/2026 Karat Packaging Inc KRT Upgrade Outperform
(Market Perform)
27.42
(53.31)
94.42% Details
5/11/2026 Madison Air Solutions MAIR New Coverage Outperform
(N/A)
42.02
(23.34)
-44.46% Details
5/4/2026 Suncrete Inc RMIX New Coverage Outperform
(N/A)
15.60
(10.13)
-35.06% Details
4/23/2026 Pool Corp POOL Maintain Market Perform
(N/A)
 
 
  Details
4/2/2026 Acuity Brands AYI Maintain Outperform
(N/A)
 
 
  Details
4/1/2026 James Hardie Industries JHX Maintain Outperform
(N/A)
 
 
  Details
4/1/2026 MSC Industrial MSM Maintain Market Perform
(N/A)
 
 
  Details
3/24/2026 Watsco WSO Maintain Market Perform
(N/A)
 
 
  Details
3/18/2026 Carlisle CSL Maintain Market Perform
(N/A)
 
 
  Details
3/18/2026 AAON Inc AAON Maintain Outperform
(N/A)
 
 
  Details
3/5/2026 Lennox International LII Maintain Outperform
(N/A)
 
 
  Details
3/4/2026 Latham Group Inc. SWIM Maintain Outperform
(N/A)
 
 
  Details
3/2/2026 AAON Inc AAON Maintain Outperform
(N/A)
 
 
  Details
2/26/2026 Builders FirstSource BLDR New Coverage Outperform
(N/A)
102.63
(54.65)
-46.75% Details
12/30/2025 Acuity Brands AYI Maintain Outperform
(N/A)
 
 
  Details
12/30/2025 AAON Inc AAON Maintain Outperform
(N/A)
 
 
  Details
12/10/2025 AAON Inc AAON Maintain Outperform
(N/A)
 
 
  Details
11/5/2025 Trex TREX Downgrade Market Perform
(Outperform)
47.94
(45.73)
-4.61% Details
10/22/2025 Lennox International LII Maintain Outperform
(N/A)
 
 
  Details
10/15/2025 Pool Corp POOL Downgrade Market Perform
(Outperform)
291.73
(172.57)
-40.85% Details
10/15/2025 SiteOne Landscape Supply SITE Downgrade Market Perform
(Outperform)
120.05
(94.84)
-21% Details
10/15/2025 Watsco WSO Downgrade Market Perform
(Outperform)
364.49
(295.91)
-18.82% Details
10/1/2025 Acuity Brands AYI Maintain Outperform
(N/A)
 
 
  Details
9/12/2025 Proficient Auto Logistics PAL Downgrade Market Perform
(Outperform)
7.45
(3.19)
-57.18% Details
8/20/2025 QXO Inc QXO Maintain Outperform
(N/A)
 
 
  Details
8/12/2025 AAON Inc AAON Maintain Outperform
(N/A)
 
 
  Details
6/27/2025 James Hardie Industries JHX New Coverage Outperform
(N/A)
25.77
(25.82)
0.19% Details
6/26/2025 Acuity Brands AYI Maintain Outperform
(N/A)
 
 
  Details
6/18/2025 QXO Inc QXO New Coverage Outperform
(N/A)
13.71
(13.71)
0% Details
6/10/2025 AAON Inc AAON Maintain Outperform
(N/A)
 
 
  Details
3/24/2025 Azek Co. AZEK Downgrade Market Perform
(Outperform)
41.39
(54.35)
31.31% Details
3/20/2025 Beacon Roofing Supply BECN Downgrade Market Perform
(Outperform)
121.53
(124.17)
2.17% Details
3/10/2025 Fastenal FAST Upgrade Outperform
(Market Perform)
77.85
(51.02)
-34.46% Details
3/10/2025 WW Grainger GWW Upgrade Outperform
(Market Perform)
995.82
(1330.70)
33.63% Details
2/21/2025 AAON Inc AAON Maintain Outperform
(N/A)
 
 
  Details
1/2/2025 Acuity Brands AYI Upgrade Outperform
(Market Perform)
292.13
(319.42)
9.34% Details
1/2/2025 Karat Packaging Inc KRT Downgrade Market Perform
(Outperform)
30.26
(27.42)
-9.39% Details
1/2/2025 Hillman Solutions Corp. HLMN Downgrade Market Perform
(Outperform)
9.74
(7.37)
-24.33% Details
6/3/2024 Proficient Auto Logistics PAL New Coverage Outperform
(N/A)
15.13
(7.45)
-50.76% Details
4/29/2024 AAON Inc AAON New Coverage Outperform
(N/A)
89.90
(73.73)
-17.99% Details
4/15/2024 Snap One Holdings SNPO Downgrade Market Perform
(Outperform)
8.14
(10.75)
32.06% Details
3/6/2024 Ferguson Plc. FERG Maintain Outperform
(N/A)
 
 
  Details
1/8/2024 Beacon Roofing Supply BECN Upgrade Outperform
(Market Perform)
84.98
(124.17)
46.12% Details
7/14/2023 Leslie's LESL Downgrade Market Perform
(Outperform)
9.52
(0.10)
-98.95% Details
7/12/2023 Lennox International LII Upgrade Outperform
(Market Perform)
327.17
(357.73)
9.34% Details
7/7/2023 Ferguson Plc. FERG New Coverage Outperform
(N/A)
156.28
(231.61)
48.2% Details
7/19/2022 Beacon Roofing Supply BECN Downgrade Market Perform
(Outperform)
55.21
(124.17)
124.9% Details
6/30/2022 MSC Industrial MSM Downgrade Market Perform
(Outperform)
73.56
(130.38)
77.24% Details
6/23/2022 Acuity Brands AYI Downgrade Market Perform
(Outperform)
155.23
(303.25)
95.36% Details
10/13/2021 Beacon Roofing Supply BECN Maintain Outperform
(N/A)
 
 
  Details
9/16/2021 Hayward Holdings Inc HAYW Maintain Outperform
(N/A)
 
 
  Details
8/9/2021 Hillman Solutions Corp. HLMN New Coverage Outperform
(N/A)
12.71
(7.37)
-42.01% Details
7/14/2021 Lennox International LII Downgrade Market Perform
(Outperform)
336.17
(357.73)
6.41% Details
7/14/2021 Beacon Roofing Supply BECN Maintain Outperform
(N/A)
 
 
  Details
5/19/2021 Karat Packaging Inc KRT New Coverage Outperform
(N/A)
17.37
(53.31)
206.91% Details
5/18/2021 Latham Group Inc. SWIM New Coverage Outperform
(N/A)
31.81
(6.37)
-79.97% Details
4/8/2021 MSC Industrial MSM Upgrade Outperform
(Market Perform)
91.64
(130.38)
42.27% Details
4/6/2021 Hayward Holdings Inc HAYW New Coverage Outperform
(N/A)
17.04
(11.83)
-30.58% Details
3/26/2021 Acuity Brands AYI Upgrade Outperform
(Market Perform)
131.57
(303.25)
130.49% Details
2/24/2021 Systemax SYX Downgrade Market Perform
(Outperform)
44.41
(35.16)
-20.83% Details
11/23/2020 Leslie's LESL New Coverage Outperform
(N/A)
22.00
(0.10)
-99.55% Details
10/6/2020 Beacon Roofing Supply BECN Upgrade Outperform
(Market Perform)
32.16
(124.17)
286.1% Details
7/20/2020 Beacon Roofing Supply BECN Maintain Market Perform
(N/A)
 
 
  Details
6/29/2020 HD Supply Holdings HDS Maintain Market Perform
(N/A)
 
 
  Details
6/3/2020 Allegion ALLE New Coverage Market Perform
(N/A)
100.65
(156.54)
55.53% Details
2/12/2020 WW Grainger GWW Upgrade Outperform
(Market Perform)
298.17
(1330.70)
346.29% Details
2/4/2020 Lennox International LII Maintain Outperform
(N/A)
 
 
  Details
1/14/2020 Trex TREX Maintain Outperform
(N/A)
 
 
  Details
1/8/2020 Trex TREX Maintain Outperform
(N/A)
 
 
  Details
9/26/2019 HD Supply Holdings HDS Downgrade Market Perform
(Outperform)
37.92
(55.99)
47.65% Details
8/22/2019 Trex TREX New Coverage Outperform
()
85.67
(47.94)
-44.04% Details
5/7/2019 Fastenal FAST Downgrade Market Perform
(Outperform)
67.96
(51.02)
-24.93% Details
5/7/2019 MSC Industrial MSM Downgrade Market Perform
(Outperform)
83.97
(130.38)
55.27% Details
5/7/2019 WESCO International WCC Downgrade Market Perform
(Outperform)
57.09
(340.89)
497.11% Details
4/10/2019 Pool Corp POOL Maintain Outperform
(N/A)
 
 
  Details
1/18/2019 LKQ Corp. LKQ Downgrade Market Perform
(Outperform)
26.82
(22.23)
-17.11% Details
10/31/2018 Systemax SYX Upgrade Outperform
(Market Perform)
25.82
(35.16)
36.17% Details
10/8/2018 Beacon Roofing Supply BECN Downgrade Market Perform
(Outperform)
33.34
(124.17)
272.44% Details
9/25/2018 Acuity Brands AYI Maintain Market Perform
(N/A)
 
 
  Details
9/25/2018 SiteOne Landscape Supply SITE Maintain Outperform
(Outperform)
 
 
  Details
8/29/2018 Systemax SYX New Coverage Market Perform
(N/A)
36.82
(25.82)
-29.88% Details