Weibo Corporation
Weibo Corporation (WB) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · WB · as of Mar 31, 2025
Ownership Breakdown
162
Institutional Holders
▼ 1 vs Q4
$562.06M
Total Inst. Value
▼ $79.76M vs Q4
239.06M
Shares Outstanding
freeFloat 99.96%
59.46M
13F Shares Held
▼ 7.74M vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
WB largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
ALIBABA GROUP HOLDING LTD services-computer programming, data processing, etc. | 9.00M | 3.79% | 3.79% | $85.23B | May 15, 2025 | — held |
ACADIAN ASSET MANAGEMENT LLC services-computer programming, data processing, etc. | 5.97M | 2.51% | 2.51% | $56.47B | May 21, 2025 | ▼ 4.7K |
KRANE FUNDS ADVISORS LLC services-computer programming, data processing, etc. | 4.33M | 1.83% | 1.83% | $41.03B | Apr 28, 2025 | ▲ 868.6K |
BLACKROCK, INC. services-computer programming, data processing, etc. | 3.50M | 1.47% | 1.47% | $33.11B | May 2, 2025 | ▼ 369.1K |
FEDERATED HERMES, INC. services-computer programming, data processing, etc. | 3.04M | 1.28% | 1.28% | $28.79B | May 8, 2025 | ▼ 841.7K |
GOLDMAN SACHS GROUP INC services-computer programming, data processing, etc. | 2.84M | 1.20% | 1.20% | $26.87B | Jun 27, 2025 | ▲ 347.5K |
SABA CAPITAL MANAGEMENT, L.P. services-computer programming, data processing, etc. | 2.36M | 99.42% | 99.42% | $22.34B | May 15, 2025 | — held |
SUSQUEHANNA INTERNATIONAL GROUP, LLP services-computer programming, data processing, etc. | 2.32M | 97.79% | 97.79% | $21.98B | May 14, 2025 | ▲ 705.0K |
CAUSEWAY CAPITAL MANAGEMENT LLC services-computer programming, data processing, etc. | 2.26M | 95.08% | 95.08% | $21.37B | May 14, 2025 | ▼ 2.8K |
MACQUARIE GROUP LTD services-computer programming, data processing, etc. | 1.60M | 67.39% | 67.39% | $15.14B | Aug 14, 2025 | ▼ 783 |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
20
Increased
+5.65M shares4
New Positions
first time holders20
Decreased
−6.38M shares0
Sold Out
fully exitedNet shares change (top 50)
728.6K
+5.65M / −6.38M
Net new holders
+4
4 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
WB insider trading · insider activity
Source: SEC Form 4
0
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
No recent insider transactions reported.
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Weibo Corporation (WB) is primarily owned by institutional investors, who hold approximately 24.9% of total shares outstanding. Company insiders own approximately 0.04%, while retail and public investors account for the remaining 75.08%.
The largest institutional shareholder of Weibo Corporation is ALIBABA GROUP HOLDING LTD, holding approximately 9.00 million shares — equal to 3.79% of outstanding shares — as of March 31, 2025.
A total of 162 institutional investors currently hold WB stock, with a combined institutional value of approximately $562,056,065 as of the most recent 13F filing period.
Frequently asked questions
WB ownershipWeibo Corporation (WB) is primarily owned by institutional investors, who hold approximately 24.9% of shares. The largest shareholder is ALIBABA GROUP HOLDING LTD with a 3.79% stake. Company insiders hold 0.04%. Data sourced from SEC Form 13F as of March 31, 2025.