CNM
CORE & MAIN-A (CNM)
NYSE
$42.02+$0.05 (+0.12%)
Price as of Oct 23, 2026 7:55 PM EDT
  • $7.8B
    Market Cap
  • -23.17%
    1-Year Change
  • Industrial Distribution
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BLACKROCK FUNDING, INC. /DE
12.11%
22.3M
+1.6M (+6.98%)
Dec 31, 2024
BLACKROCK INC.
11.94%
22.0M
+2.4M (+11.00%)
Jun 30, 2024
BLACKROCK, INC.
9.95%
18.4M
-848,336 (-4.62%)
Jun 30, 2026
VANGUARD GROUP INC
9.54%
17.6M
-106,652 (-0.61%)
Dec 31, 2025
CAPITAL WORLD INVESTORS
6.22%
11.5M
-98,339 (-0.86%)
Jun 30, 2026
FMR LLC
4.86%
9.0M
+3.6M (+39.69%)
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
4.62%
8.5M
+51,773 (+0.61%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions4.3B (83.44%)
  • Mutual Funds838.6M (16.40%)
  • Insiders8.5M (0.17%)
  • Other0 (0.00%)

Insider Transactions

  • 0.17% (8.5M)
    Current InsiderOwnership (%, shares)
  • 1
    Number of InsiderBuying (last 12 months)
  • $251,802.07
    Amount of InsiderBuying (last 12 months)
  • 0
    Number of InsiderSelling (last 12 months)
  • $0.00
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Witkowski Mark R
Chief Executive Officer
Gift
Oct 16, 2026
$0.00
19,596
$0.00
31,523
Harper Carla D
Senior VP, Human Resources
In Kind
Aug 04, 2026
$11,209.44
242
$46.32
13,064
HUEBERT MICHAEL G.
President
In Kind
Jul 22, 2026
$56,918.75
1,301
$43.75
24,036
Gipson Dennis G
Award
Jun 23, 2026
$0.00
2,799
$0.00
16,757
Castellano James G
Award
Jun 23, 2026
$0.00
2,799
$0.00
7,437
Buck Robert M
Award
Jun 23, 2026
$0.00
2,799
$0.00
15,849
Harper Carla D
Senior VP, Human Resources
In Kind
Jun 22, 2026
$26,838.00
568
$47.25
13,306
Hope James D
Buy
Apr 07, 2026
$99,970.54
1,972
$50.70
6,939
Hardwick M Susan
Award
Apr 01, 2026
$0.00
580
$0.00
580
HUEBERT MICHAEL G.
President
Award
Mar 12, 2026
$0.00
37,539
$0.00
37,539
Stephens John Weldon
Chief Accounting Officer
Award
Mar 12, 2026
$0.00
6,684
$0.00
6,684
Witkowski Mark R
Chief Executive Officer
Award
Mar 12, 2026
$0.00
131,382
$0.00
131,382
Harper Carla D
Senior VP, Human Resources
Award
Mar 12, 2026
$0.00
17,598
$0.00
17,598
HUEBERT MICHAEL G.
President
Award
Mar 12, 2026
$0.00
10,500
$0.00
25,337
Stephens John Weldon
Chief Accounting Officer
Award
Mar 12, 2026
$0.00
936
$0.00
17,374
Witkowski Mark R
Chief Executive Officer
Award
Mar 12, 2026
$0.00
18,372
$0.00
51,119
Giles Jeffrey D
EVP, Corporate Development
Award
Mar 12, 2026
$0.00
21,585
$0.00
21,585
Bradbury Robyn L
Chief Financial Officer
Award
Mar 12, 2026
$0.00
4,824
$0.00
12,500
Giles Jeffrey D
EVP, Corporate Development
Award
Mar 12, 2026
$0.00
3,021
$0.00
9,681
Cowles Bradford A
President
Award
Mar 12, 2026
$0.00
50,676
$0.00
50,676
Bradbury Robyn L
Chief Financial Officer
Award
Mar 12, 2026
$0.00
34,488
$0.00
34,488
Harper Carla D
Senior VP, Human Resources
Award
Mar 12, 2026
$0.00
2,463
$0.00
13,874
Cowles Bradford A
President
Award
Mar 12, 2026
$0.00
7,086
$0.00
25,491
HUEBERT MICHAEL G.
President
In Kind
Mar 11, 2026
$21,974.52
447
$49.16
14,837
Whittenburg Mark G
General Counsel and Secretary
In Kind
Mar 11, 2026
$16,271.96
331
$49.16
8,525
Witkowski Mark R
Chief Executive Officer
In Kind
Mar 11, 2026
$82,834.60
1,685
$49.16
32,747
Bradbury Robyn L
Chief Financial Officer
In Kind
Mar 11, 2026
$19,860.64
404
$49.16
7,676
Stephens John Weldon
Chief Accounting Officer
In Kind
Mar 11, 2026
$5,260.12
107
$49.16
16,438
Harper Carla D
Senior VP, Human Resources
In Kind
Mar 11, 2026
$4,375.24
89
$49.16
11,411
Cowles Bradford A
President
In Kind
Mar 11, 2026
$29,840.12
607
$49.16
18,405