WESCO Ownership | Who Owns WESCO?


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WESCO Ownership Summary


WESCO is owned by 98.46% institutional investors, 1.85% insiders. Blackrock funding, inc. /de is the largest institutional shareholder, holding 18.10% of WCC shares. iShares Core S&P Mid-Cap ETF is the top mutual fund, with 3.43% of its assets in WESCO shares.

WCC Ownership Benchmark


TypeName% Inst% Insiders% Retail
StockWESCO98.46%1.85%-0.31%
SectorIndustrials Stocks 49.20%16.03%34.77%

Institutional Shareholders


Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Blackrock funding, inc. /de8.96M18.10%$3.09B
Vanguard group4.56M9.21%$1.11B
Blackrock4.68M9.19%$741.12M
Wellington management group llp3.60M7.27%$985.06M
Vanguard capital management2.20M4.45%$760.14M
Dimensional fund advisors lp2.01M4.07%$695.58M
State street1.52M3.06%$523.61M
Invesco1.51M3.05%$413.04M
Geode capital management927.91K1.87%$320.61M
Norges bank860.37K1.74%$297.20M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Sea cliff partners management, lp86.22K12.18%$23.59M
New south capital management512.07K7.75%$176.89M
Kailix advisors16.20K5.41%$5.60M
Fact capital, lp29.51K5.37%$8.07M
Bayberry capital partners lp62.20K5.27%$17.02M
Generali powszechne towarzystwo emerytalne82.68K4.53%$28.56M
Baupost group llc/ma662.88K4.23%$228.98M
Black cypress capital management13.73K3.17%$4.74M
Carnegie lake advisors24.28K3.13%$8.39M
Private harbour investment management & counsel7.51K3.08%$2.60M

Top Buyers

HolderShares% AssetsChange
Norges bank860.37K0.03%860.37K
Wellington management group llp3.60M0.18%816.01K
Citigroup623.91K0.07%553.08K
Holocene advisors, lp379.34K0.25%379.34K
Blackrock4.68M0.02%317.23K

Top Sellers

HolderShares% AssetsChange
Leonard green & partners---1.25M
Baupost group llc/ma662.88K4.23%-774.00K
Third point---525.20K
Interval partners, lp73.10K0.25%-520.39K
Southpoint capital advisors lp---500.00K

New Positions

HolderShares% AssetsChangeValue
Norges bank860.37K0.03%860.37K$297.20M
Holocene advisors, lp379.34K0.25%379.34K$103.80M
Freestone grove partners lp119.40K0.23%119.40K$32.67M
Mizuho markets cayman lp76.34K0.99%76.34K$26.37M
Mawer investment management74.62K0.18%74.62K$25.77M

Sold Out

HolderChange
American capital advisory-1.00
Crewe advisors-1.00
Nelson, van denburg & campbell wealth management group-1.00
Hexagon capital partners-1.00
Atlantic private wealth-1.00

Institutional Ownership Trends


DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Mar 31, 2026634-0.16%48,736,7060.21%981.02%3260.62%2132.90%
Dec 31, 2025242-57.84%11,114,158-77.20%220.23%119-60.20%79-56.59%
Sep 30, 2025264-50.19%13,957,617-70.28%280.31%148-45.59%74-58.89%
Jun 30, 2025532-2.39%48,535,4063.38%981.09%275-9.54%17817.88%
Mar 31, 202514-97.49%362,148-99.22%-0.01%5-98.28%4-97.73%

Top Mutual Funds Shareholders


HolderShares% HoldingChange
iShares Core S&P Mid-Cap ETF1.67M3.43%51.00
Vanguard US Total Market Shares ETF1.55M3.18%-63.16K
Vanguard Morn Total Stk Mkt Idx Investor1.55M3.17%-3.28K
Vanguard Total Stock Mkt Idx Inv1.55M3.17%-3.28K
Pacer US Cash Cows 100 ETF1.25M2.55%1.54K
Vanguard Small Cap Index1.12M2.29%-2.85K
BlackRock Large Cap Core (SMA)846.26K1.74%-
BlackRock Equity Dividend Instl843.80K1.73%-207.66K
Vanguard Small Cap Value Index Inv709.05K1.46%-12.36K
Vanguard Morn Small Cap Value Index709.05K1.46%-12.36K

Recent Insider Transactions


DateNameRoleActivityValue
Aug 12, 2026Thompson Laura K-Sell$99.48K
Aug 04, 2026Castillo Daniel J EVP & GM, EESBuy$351.25K
May 11, 2026Porwal Hemant EVP Supply Chain & OperationsSell$1.61M
May 06, 2026Porwal Hemant EVP Supply Chain & OperationsSell$998.97K
May 06, 2026Lazzaris Diane EVP and General CounselSell$57.71K

Insider Transactions Trends


DateBuySell
2028 Q1-1
2024 Q3-1
2024 Q2-4
2024 Q1-2
2023 Q4-2

WCC Ownership FAQ


Who owns the most shares of WESCO?

WESCO’s largest shareholders are Blackrock funding, inc. /de (8.96M shares, 18.10%), Vanguard group (4.56M shares, 9.21%), and Blackrock (4.68M shares, 9.19%). Together, they hold 36.49% of WESCO’s total shares outstanding.

Does Blackrock own WESCO?

Yes, BlackRock owns 9.19% of WESCO, totaling 4.68M shares as of Jun 2024. This represents 0.02% of BlackRock's total assets, with a market value of 741.12M$. In the last quarter, BlackRock increased its holdings by 317.23K shares, a 7.28% change.

Who is WESCO’s biggest shareholder by percentage of total assets invested?

Sea cliff partners management, lp is WESCO’s biggest shareholder by percentage of total assets invested, with 12.18% of its assets in 86.22K WESCO shares, valued at 23.59M$.

Who is the top mutual fund holder of WESCO shares?

iShares Core S&P Mid-Cap ETF is the top mutual fund holder of WESCO shares, with 3.43% of its total shares outstanding invested in 1.67M WESCO shares.

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