WB Institutional Ownership Changes & 13F Activity
WEIBO CORP-SPON ADR (WB) institutional ownership data tracks hedge funds, asset managers, pension funds, and institutional investors holding Amazon shares based on recent SEC 13F filings (Q4 2025). Recent filings show notable position changes from firms including Causeway Capital Management, Renaissance Technologies LLC, Ariel Appreciation Fund, Oaktree Capital Management, and Sequoia Financial Advisors. This page analyzes institutional buying and selling activity, increased and reduced positions, new holdings, and sold-out positions to help investors understand institutional sentiment, portfolio allocation trends, and hedge fund conviction in WEIBO CORP-SPON ADR stock.
Key Insights:
- Q4 2025 SEC 13F filings show notable institutional position changes in WB.
- Causeway Capital Management, Renaissance Technologies LLC, Ariel Appreciation Fund, Oaktree Capital Management, and Sequoia Financial Advisors were among firms reporting significant share count changes.
- Institutional ownership trends can help investors monitor hedge fund sentiment and long-term conviction in WB stock.
Related WB Insights:
| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q4 2018 | Oaktree Capital Management | Buy | 25,000 | 431,600 | $25,218 |
| Q3 2018 | Renaissance Technologies LLC | Buy | 127,400 | 388,708 | $28,426 |
| Q3 2018 | Oaktree Capital Management | Buy | 406,600 | 406,600 | $29,735 |
| Q1 2018 | Sequoia Financial Advisors | Buy | 30 | 1,993 | $238 |
| Q1 2018 | Renaissance Technologies LLC | Sell | -65,500 | 261,308 | $31,237 |
| Q4 2017 | Sequoia Financial Advisors | Buy | 1,963 | 1,963 | $203 |
| Q4 2017 | Renaissance Technologies LLC | Sell | -13,727 | 326,808 | $33,812 |
| Q3 2017 | Renaissance Technologies LLC | Buy | 185,627 | 340,535 | $33,693 |
| Q3 2017 | Tiger Global Management | Buy | 910,000 | 910,000 | $90,035 |
| Q2 2017 | Himalaya Capital Management | Buy | 5,230 | 5,230 | $348 |
| Q2 2017 | Renaissance Technologies LLC | Buy | 124,658 | 154,908 | $10,297 |
| Q3 2016 | Renaissance Technologies LLC | Buy | 18,550 | 30,250 | $1,517 |
| Q2 2016 | Renaissance Technologies LLC | Sell | -11,800 | 11,700 | $332 |
| Q1 2016 | Renaissance Technologies LLC | Sell | -18,300 | 23,500 | $422 |
| Q4 2015 | Renaissance Technologies LLC | Buy | 9,800 | 41,800 | $815 |
| Q4 2014 | Renaissance Technologies LLC | Buy | 32,000 | 32,000 | $456 |
Frequently asked questions about WB activity
Which institutional owners are buying WB?
Institutional owners buying WB 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 WB activity?
"Buy" means an investor increased their reported position in WB compared to the prior reporting period. This reflects growing exposure to WEIBO CORP-SPON ADR (WB) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in WB increasing?
Institutional interest in WB 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.