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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- WASTE MANAGEMENT INC (WM) stock institutional ownership
- WASTE MANAGEMENT INC (WM) stock insider trading activity
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| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q1 2015 | Parnassus Endeavor Fund | Buy | 194,787 | 4,781,005 | $259,274 |
| Q1 2015 | Renaissance Technologies LLC | Sell | -792,495 | 730,505 | $39,615 |
| Q4 2014 | Parnassus Endeavor Fund | Sell | -138,589 | 4,586,218 | $235,365 |
| Q4 2014 | Renaissance Technologies LLC | Buy | 297,200 | 1,523,000 | $78,160 |
| Q3 2014 | Parnassus Endeavor Fund | Buy | 136,076 | 4,724,807 | $224,570 |
| Q3 2014 | Renaissance Technologies LLC | Sell | -473,400 | 1,225,800 | $58,262 |
| Q2 2014 | Parnassus Endeavor Fund | Buy | 19,400 | 4,588,731 | $205,254 |
| Q2 2014 | Renaissance Technologies LLC | Buy | 9,335 | 1,699,200 | $76,005 |
| Q1 2014 | Parnassus Endeavor Fund | Sell | -1,049 | 4,569,331 | $192,232 |
| Q1 2014 | Renaissance Technologies LLC | Buy | 939,265 | 1,689,865 | $71,093 |
| Q4 2013 | Parnassus Endeavor Fund | Sell | -290,205 | 4,570,380 | $205,073 |
| Q4 2013 | Sequoia Financial Advisors | Buy | 24,391 | 24,391 | $1,094 |
| Q4 2013 | Renaissance Technologies LLC | Buy | 700 | 750,600 | $33,679 |
| Q3 2013 | Parnassus Endeavor Fund | Buy | 5,585 | 4,860,585 | $200,451 |
| Q3 2013 | Renaissance Technologies LLC | Buy | 606,400 | 749,900 | $30,926 |
| Q2 2013 | Parnassus Endeavor Fund | Buy | 4,855,000 | 4,855,000 | $195,802 |
| Q2 2013 | Renaissance Technologies LLC | Buy | 143,500 | 143,500 | $5,787 |
| Q2 2013 | Bill & Melinda Gates Foundation Trust | Buy | 18,633,672 | 18,633,672 | $751,496 |
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.