WESCO International, Inc. (WCC) Ownership
WCC ownership summary
as of October 18, 2026- Institutions
- 98.8% of shares outstanding
- Insiders
- 1.84% of shares outstanding
- Shares outstanding
- 48.7M
- Float
- 47.9M shares available to trade
- Short interest
- 3.26% 1.4M shares short
- Days to cover
- 2.91 short interest down 1.0% vs prior month
- Institutions 98.81%
- Insiders 1.84%
WCC top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 18.38% | 9.0M | $3.05B | −431,840 (−4.6%) | June 30, 2026 |
| 2 | Vanguard Capital Management, LLC | 4.52% | 2.2M | $750.2M | +13,097 (+0.6%) | June 30, 2026 |
| 3 | Vanguard Portfolio Management, LLC | 4.25% | 2.1M | $706.4M | −1,751 (−0.1%) | June 30, 2026 |
| 4 | Wellington Management Company LLP | 4.14% | 2.0M | $688.0M | −1.6M (−43.9%) | June 30, 2026 |
| 5 | Dimensional Fund Advisors, Inc. | 4.13% | 2.0M | $686.4M | −219,450 (−9.8%) | June 30, 2026 |
| 6 | State Street Corp | 3.11% | 1.5M | $516.7M | +50,567 (+3.5%) | June 30, 2026 |
| 7 | Amvescap Plc. | 1.99% | 972K | $331.2M | −537,959 (−35.6%) | June 30, 2026 |
| 8 | Jane Street Group LLC | 1.94% | 947K | $322.7M | +933,486 (+7,122.0%) | June 30, 2026 |
| 9 | Geode Capital Management, LLC | 1.90% | 928K | $316.3M | −10,336 (−1.1%) | June 30, 2026 |
| 10 | NORGES BANK | 1.77% | 860K | $293.3M | +224,180 (+35.2%) | June 30, 2026 |
| 11 | Bank of America Corp | 1.76% | 858K | $292.4M | −104,967 (−10.9%) | June 30, 2026 |
| 12 | Bank of New York Mellon Corp | 1.48% | 722K | $246.2M | −185,175 (−20.4%) | June 30, 2026 |
| 13 | Baupost Group LLC | 1.36% | 663K | $226.0M | −774,000 (−53.9%) | June 30, 2026 |
| 14 | Alyeska Investment Group, L.P. | 1.34% | 654K | $222.8M | +91,321 (+16.2%) | June 30, 2026 |
| 15 | Morgan Stanley - Brokerage Accounts | 1.30% | 634K | $216.3M | −76,880 (−10.8%) | June 30, 2026 |
| 16 | Citigroup Inc | 1.28% | 624K | $212.7M | +553,082 (+780.9%) | June 30, 2026 |
| 17 | AQR Capital Management LLC | 1.27% | 619K | $211.1M | +99,070 (+19.0%) | June 30, 2026 |
| 18 | Lyrical Asset Management LP | 1.18% | 576K | $196.3M | −31,428 (−5.2%) | June 30, 2026 |
| 19 | FMR Inc | 1.16% | 563K | $191.9M | +55,064 (+10.8%) | June 30, 2026 |
| 20 | Newsouth Capital Management Inc | 1.05% | 512K | $174.6M | −44,988 (−8.1%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 8 holders added 2.0M shares and 12 cut 4.0M.
WCC top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Core S&P Mid-Cap ETF | 3.56% | 1.7M | $591.7M | −624 (−0.0%) | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 3.18% | 1.5M | $527.9M | −1,668 (−0.1%) | August 31, 2026 |
| 3 | Vanguard Small Cap Index | 2.25% | 1.1M | $373.9M | −23,856 (−2.1%) | September 30, 2026 |
| 4 | iShares Large Cap Core Active ETF | 1.56% | 758K | $258.5M | +4,080 (+0.5%) | September 30, 2026 |
| 5 | Vanguard MStar Small Cap Value Index | 1.46% | 714K | $243.4M | +2,196 (+0.3%) | September 30, 2026 |
| 6 | Global X US Infrastructure Dev ETF | 0.82% | 400K | $136.5M | +2,880 (+0.7%) | September 30, 2026 |
| 7 | State Street® SPDR® S&P MIDCAP 400® ETF | 0.74% | 360K | $122.8M | +4,141 (+1.2%) | September 30, 2026 |
| 8 | Bridge Builder Large Cap Value | 0.74% | 359K | $122.5M | −30,228 (−7.8%) | September 30, 2026 |
| 9 | DFA US Small Cap Value I | 0.73% | 355K | $120.9M | — | August 31, 2026 |
| 10 | BlackRock Equity Dividend Instl | 0.60% | 293K | $99.8M | −551,164 (−65.3%) | July 31, 2026 |
| 11 | Vanguard Explorer Inv | 0.58% | 283K | $96.6M | −171,018 (−37.6%) | June 30, 2026 |
| 12 | Invesco S&P MidCap Momentum ETF | 0.58% | 282K | $96.2M | — | September 30, 2026 |
| 13 | State Street SPDR Port S&P 400 Md CpETF | 0.53% | 258K | $87.8M | −360 (−0.1%) | September 30, 2026 |
| 14 | iShares S&P Mid-Cap 400 Value ETF | 0.52% | 252K | $85.8M | — | September 30, 2026 |
| 15 | American Funds SMALLCAP World A | 0.51% | 249K | $84.9M | — | September 30, 2026 |
| 16 | BGF US Flexible Equity A2 | 0.50% | 243K | $83.0M | +6,318 (+2.7%) | September 30, 2026 |
| 17 | Fidelity Extended Market Index | 0.49% | 237K | $80.8M | −2,337 (−1.0%) | August 31, 2026 |
| 18 | Invesco Small Cap Value A | 0.41% | 199K | $68.0M | +2,945 (+1.5%) | August 31, 2026 |
| 19 | iShares Russell Mid-Cap ETF | 0.41% | 198K | $67.3M | +361 (+0.2%) | September 30, 2026 |
| 20 | Dimensional US Targeted Value ETF | 0.40% | 195K | $66.4M | — | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
WCC insider transactions
latest 20| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-31 | Daniel J Castillo | Buy | $266.06 | 1,400 | $372,484 |
| 2026-02-18 | Diane Lazzaris | Sell | $302.61 | 2,747 | $831,270 |
| 2026-02-18 | Matthew S Kulasa | Sell | $307.03 | 73 | $22,413 |
| 2026-02-17 | Diane Lazzaris | Sell | $305.00 | 17,294 | $5.3M |
| 2025-11-11 | Christine Ann Wolf | Sell | $259.52 | 4,685 | $1.2M |
| 2025-11-05 | Diane Lazzaris | Sell | $258.42 | 4,039 | $1.0M |
| 2025-11-05 | Matthew S Kulasa | Sell | $253.18 | 790 | $200,012 |
| 2025-11-04 | Diane Lazzaris | Sell | $256.00 | 7,522 | $1.9M |
| 2025-09-11 | Nelson John Squires III | Sell | $219.59 | 13,780 | $3.0M |
| 2025-08-29 | James Cameron | Sell | $226.45 | 10,325 | $2.3M |
| 2025-08-29 | James Cameron | Sell | $226.45 | 10,325 | $2.3M |
| 2025-08-29 | Hemant Porwal | Sell | $224.84 | 4,656 | $1.0M |
| 2025-08-29 | Hemant Porwal | Sell | $224.84 | 4,656 | $1.0M |
| 2025-08-28 | Diane Lazzaris | Sell | $226.77 | 4,260 | $966,040 |
| 2025-08-27 | Christine Ann Wolf | Sell | $224.92 | 2,098 | $471,882 |
| 2025-08-27 | David S Schulz | Sell | $225.17 | 12,227 | $2.8M |
| 2025-08-27 | John Engel | Sell | $226.17 | 51,051 | $11.5M |
| 2025-08-26 | Diane Lazzaris | Sell | $226.27 | 3,160 | $715,013 |
| 2025-08-26 | James Louis Singleton | Sell | $226.54 | 1,500 | $339,810 |
| 2025-08-18 | Akash Khurana | Sell | $208.12 | 7,000 | $1.5M |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
WCC shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns WCC
Institutional investors own 98.8% of WESCO International's shares and insiders 1.84%. The largest holder is BlackRock Inc with 18.38% of the shares (9.0M), as of June 30, 2026. Among the top 20 institutions, 8 added shares and 12 reduced their stake in the latest filings. Short interest is 3.26% of the float, or 2.91 days of average trading volume. The share count fell 5.4% since 2014.
Related: WCC analyst forecast, WCC key metrics, WCC dividend history. See the WCC stock overview for the latest quote and news.
WCC ownership FAQ
Who owns the most WESCO International stock?
The largest shareholders of WESCO International are BlackRock Inc (18.38%), Vanguard Capital Management, LLC (4.52%), Vanguard Portfolio Management, LLC (4.25%), Wellington Management Company LLP (4.14%), Dimensional Fund Advisors, Inc. (4.13%).
What percentage of WESCO International is owned by institutions?
Institutions hold 98.8% of WESCO International's shares outstanding; insiders hold 1.84%.
Which funds own WESCO International?
The largest fund holders of WESCO International are iShares Core S&P Mid-Cap ETF (3.56%), Vanguard MStar Total Stk Mkt Idx Invest (3.18%), Vanguard Small Cap Index (2.25%), iShares Large Cap Core Active ETF (1.56%), Vanguard MStar Small Cap Value Index (1.46%).
What is WESCO International's short interest?
1.4M shares of WESCO International were sold short, 3.26% of the float; at the average daily volume it would take 2.91 days to cover.
Are insiders buying or selling WESCO International?
Of the latest 20 reported insider transactions in WESCO International (since August 18, 2025), 1 were purchases and 19 were sales.
How many shares of WESCO International are outstanding?
WESCO International has 48.7M shares outstanding, of which 47.9M are in the public float.