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WCC · Wesco International Inc

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Market Cap
$16.49B
Shares
48.73M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 701
Total Value: $16,366,318,447
Total Shares: 47,378,215
Showing 1–100 of 718 holdings by value · page 1 of 8

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 701 13F filers · Δ vs Mar 31, 2026
Top Holder
18.9%
Sep 2023 → Jun 2026 · range 9.3% – 19.1%
−0.2 pts
Top 5
36.4%
Sep 2023 → Jun 2026 · range 28.1% – 40.9%
−3.3 pts
Top 10
47.6%
Sep 2023 → Jun 2026 · range 41.3% – 55.3%
−5.0 pts
HHI
496
Sep 2023 → Jun 2026 · range 277 – 542
Broadly held−46

Quarterly Activity

vs Mar 31, 2026
New
121
Increased
209
Decreased
277
Sold Out
49
Unchanged
94
Holder count: +72
Institutional value: +21.9%
Shares held: -3.5%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 718
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 929008 CUSIP 95082P105 13F (30d) 432 filings 423 filers Visit website Investor relations