$WCC

$339.13 +$9.63 (2.92%) Live

$WCC Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 48.7M shares outstanding

Who owns WCC?

By type of holder

Institutions 96.2% Insiders 2.1% Everyone else 1.7%

Concentration Top 10 holders own 45.6%

BlackRock, Inc. 18.4% · Wellington Management Group LLP 4.1%

Institutional ownership

96.2%

-3.7 pts vs last qtr

Institutional holders

699

+80 vs last qtr

Net shares bought

−1.8M

by institutions in Q2 2026

New / sold out

121 / 41

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Jane Street Group, LLC +933.5K
Norges Bank NEW +860.4K

Biggest sellers in Q2 2026

Wellington Management Group LLP −1.6M
Baupost Group Llc/ma −774.0K

Who is planning to sell?

Notices of proposed sale, last 12 months

$69M

23 notices from 13 people

Shares covered

203.5K

0.42% of the company

Arranged in advance

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

John James Engel Officer $28.5M
David Schulz Officer $15.9M

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

+2.4%

+0.27% a year

Each share's claim on the business

−2.4%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$975M vs $277M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years63% 3–5 years7% 1–3 years18% Under 1 year12%

Quarterly turnover

13.4%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting WCC on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	9.0M	18.38%	−431.8K (−4.6%)	≤2021	0.1%
Shares held by quarter Peak holding9.4M (Q1'26) Change over 8 quarters+4.8M Share of the company18.380% BlackRock, Inc.'s full portfolio →
WM Wellington Management Group LLP	2.0M	4.14%	−1.6M (−43.9%)	2024	0.1%
Shares held by quarter Peak holding3.6M (Q1'26) Change over 8 quarters+2.0M Share of the company4.140% Wellington Management Group LLP's full portfolio →

BlackRock, Inc.

9.0M

% of company

18.38%

Change vs last qtr

−431.8K (−4.6%)

Held since

≤2021

Wellington Management Group LLP

2.0M

% of company

4.14%

Change vs last qtr

−1.6M (−43.9%)

Held since

2024

28 more super investors behind a free account

See every manager holding WESCO International, Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting WCC on Form N-PORT; together they hold 41.1% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
IC iShares Core S&P Mid-Cap ETF iShares Trust	$576M	1.7M	3.42%	0.46%	June 30, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$534M	1.5M	3.17%	0.02%	June 30, 2026

iShares Core S&P Mid-Cap ETF

iShares Trust

Position value

$576M

% of company

3.42%

% of the fund

0.46%

As of

June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$534M

% of company

3.17%

% of the fund

0.02%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding WESCO International, Inc. and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
EJ Engel John Insider	479.0K	0.98%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.980% Engel John's insider activity →
SD Schulz David S. Insider	77.0K	0.16%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.160% Schulz David S.'s insider activity →

Engel John

Insider

479.0K

% of company

0.98%

Change vs last qtr

—

Held since

—

Schulz David S.

Insider

77.0K

% of company

0.16%

Change vs last qtr

—

Held since

—

23 more holders behind a free account

See every insider and 5%+ holder of WESCO International, Inc..

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