WASTE MANAGEMENT INC (WM) Stock Institutional Trading Activity


WASTE MANAGEMENT INC (WM) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Jensen Investment Management, Mairs & Power Growth Fund, Bill & Melinda Gates Foundation Trust, Renaissance Technologies LLC, and Parnassus Endeavor Fund. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q3 2018Sequoia Financial AdvisorsBuy13,178$287
Q3 2018Renaissance Technologies LLCSell-2,710,5001,269,500$114,712
Q2 2018Parnassus Endeavor FundBuy6,3895,469,840$444,917
Q2 2018Sequoia Financial AdvisorsBuy773,177$258
Q1 2018Parnassus Endeavor FundBuy38,1265,463,451$459,585
Q1 2018Sequoia Financial AdvisorsSell-1273,100$261
Q1 2018Renaissance Technologies LLCBuy171,4003,980,000$334,798
Q4 2017Parnassus Endeavor FundBuy3,5605,425,325$468,206
Q4 2017Sequoia Financial AdvisorsSell-21,1643,227$278
Q4 2017Renaissance Technologies LLCBuy511,7003,808,600$328,682
Q3 2017Parnassus Endeavor FundBuy6,3455,421,765$424,362
Q3 2017Renaissance Technologies LLCSell-478,6003,296,900$258,048
Q2 2017Parnassus Endeavor FundSell-3,9995,415,420$397,221
Q2 2017Renaissance Technologies LLCSell-81,8003,775,500$276,933
Q1 2017Parnassus Endeavor FundSell-1,6995,419,419$382,659
Q1 2017Renaissance Technologies LLCBuy1,879,3003,857,300$281,274
Q4 2016Parnassus Endeavor FundBuy10,0185,421,118$384,411
Q4 2016Renaissance Technologies LLCBuy252,7001,978,000$140,260
Q3 2016Parnassus Endeavor FundBuy348,4055,411,100$345,012
Q3 2016Renaissance Technologies LLCBuy152,4001,725,300$110,005
Q2 2016Parnassus Endeavor FundSell-3,3265,062,695$335,505
Q2 2016Renaissance Technologies LLCBuy809,4001,572,900$104,236
Q1 2016Parnassus Endeavor FundBuy40,8315,066,021$298,895
Q1 2016Renaissance Technologies LLCBuy319,400763,500$45,047
Q4 2015Parnassus Endeavor FundBuy9,6995,025,190$268,194
Q4 2015Renaissance Technologies LLCBuy181,800444,100$23,702
Q3 2015Parnassus Endeavor FundBuy278,3735,015,491$239,950
Q3 2015Renaissance Technologies LLCSell-553,000262,300$13,065
Q2 2015Parnassus Endeavor FundSell-43,8874,737,118$219,565
Q2 2015Renaissance Technologies LLCBuy84,795815,300$37,789

Frequently asked questions about WM activity

  • Which institutional owners are buying WM?

    Institutional owners buying WM include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in WM activity?

    "Buy" means an investor increased their reported position in WM compared to the prior reporting period. This reflects growing exposure to WASTE MANAGEMENT INC (WM) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in WM increasing?

    Institutional interest in WM can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.