Estimated market cap $1.51BShares outstanding from the company’s latest SEC filing (all share classes, each priced at its own close; ADRs converted to ADS) × last close from Tiingo. Updated daily. This figure: shares as of Dec 31, 2025, last close Nov 13, 2026.245.55M ADSs, shares as of Dec 31, 2025CIK 1595761The SEC’s Central Index Key, the number it uses to identify every company and person that files.
Insider trades, 12 mo
—
No open-market trades
Congress trades, 24 mo
—
No disclosed trades
13F holders
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Lobbying, 12 mo
—
No lobbying filings
Federal contracts, 12 mo
—
None matched
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Latest 10-Q
What changed in Weibo Corporation's latest quarterly report, compared with the one before.
We have not read a recent 10-Q for this company yet.
Insider trades
Open-market trades from Form 4. 10b5-1 marks a plan set in advance.Open-market buys and sales by officers, directors and 10% owners, from SEC Form 4. A plan set in advance is marked 10b5-1.
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13F holders
Funds that report this stock, checked against market prices.Fund managers with over $100 million in US-listed stocks file a 13F each quarter, up to 45 days after quarter end. Long positions only.
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Top 10 holders.Premium lists every holder, with CSV downloads.
Disclosed in dollar ranges, up to 45 days after the trade.Members of Congress, their spouses and dependent children report trades in dollar ranges, up to 45 days after the trade.
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Lobbying
What Weibo Corporation and its lobbying firms report each quarter.A company that lobbies with its own staff reports its expenses; a lobbying firm it hires reports the income it received. We count both.
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Institutional ownership over time
How many funds reported holding the stock at the end of each quarter, and how many shares they held between them.
13F holders, Q3 2026Fund managers with over $100 million in US-listed stocks file a 13F each quarter, up to 45 days after quarter end. Long positions only.
80
26 added · 29 trimmed
Insider trades
Open-market trades from Form 4. 10b5-1 marks a plan set in advance.Open-market buys and sales by officers, directors and 10% owners, from SEC Form 4. A plan set in advance is marked 10b5-1.
No recent insider purchases or sales for this company.
13F holders
22.66M shares
80 funds report WB. Values checked against market prices.Fund managers with over $100 million in US-listed stocks file a 13F each quarter, up to 45 days after quarter end. Long positions only.
Q3 2026. 9 new, 26 added to, 29 trimmed, 63 exited since Q2 2026.
2 of these funds report values in thousands of dollars; their figures are shown in dollars.
Download CSVEvery fund that holds WB, not only these ten. A download holds at most 10,000 rows; narrow the filters to get a smaller slice.
Trades by members of Congress
Disclosed in dollar ranges, up to 45 days after the trade.Members of Congress, their spouses and dependent children report trades in dollar ranges, up to 45 days after the trade.
No recent congressional trades for this company.
Lobbying
What Weibo Corporation and its lobbying firms report each quarter.A company that lobbies with its own staff reports its expenses; a lobbying firm it hires reports the income it received. We count both.
No recent lobbying filings for this company.
Institutional ownership over time
How many funds reported holding the stock at the end of each quarter, and how many shares they held between them.
Funds holding the stock
Shares they report
Funds holding the stock by quarter
Q2 2014
38
—
3.42M
$70.1M
Q3 2014
47
+9
4.45M
$83.2M
Q4 2014
41
-6
5.23M
$74.4M
Q1 2015
38
-3
6.19M
$79.7M
Q2 2015
48
+10
11.74M
$201.2M
Q3 2015
47
-1
11.20M
$130.9M
Q4 2015
61
+14
19.81M
$386.3M
Q1 2016
65
+4
21.58M
$397.9M
Q2 2016
100
+35
24.95M
$709.2M
Q3 2016
168
+68
31.61M
$1.6B
Q4 2016
171
+3
35.74M
$1.5B
Q1 2017
182
+11
36.13M
$1.9B
Q2 2017
250
+68
42.70M
$2.8B
Q3 2017
243
-7
48.70M
$4.8B
Q4 2017
286
+43
49.72M
$5.1B
Q1 2018
310
+24
52.77M
$6.3B
Q2 2018
291
-19
52.54M
$4.7B
Q3 2018
259
-32
53.36M
$3.9B
Q4 2018
270
+11
55.48M
$3.2B
Q1 2019
240
-30
59.30M
$3.6B
Q2 2019
226
-14
61.19M
$2.7B
Q3 2019
188
-38
61.06M
$2.7B
Q4 2019
193
+5
59.45M
$2.8B
Q1 2020
182
-11
58.42M
$1.9B
Q2 2020
171
-11
57.85M
$1.9B
Q3 2020
164
-7
58.11M
$2.1B
Q4 2020
171
+7
67.33M
$2.8B
Q1 2021
181
+10
65.65M
$3.3B
Q2 2021
192
+11
69.48M
$3.7B
Q3 2021
186
-6
68.76M
$3.3B
Q4 2021
168
-18
72.78M
$2.3B
Q1 2022
158
-10
78.46M
$1.9B
Q2 2022
170
+12
69.25M
$1.6B
Q3 2022
152
-18
65.83M
$1.1B
Q4 2022
164
+12
67.17M
$1.3B
Q1 2023
180
+16
71.63M
$1.4B
Q2 2023
178
-2
70.71M
$930.7M
Q3 2023
161
-17
69.80M
$875.2M
Q4 2023
168
+7
74.69M
$817.6M
Q1 2024
146
-22
72.00M
$657.1M
Q2 2024
136
-10
67.39M
$517.5M
Q3 2024
124
-12
63.37M
$640.9M
Q4 2024
147
+23
67.20M
$641.8M
Q1 2025
150
+3
59.48M
$562.2M
Q2 2025
144
-6
57.27M
$546.0M
Q3 2025
141
-3
54.61M
$671.0M
Q4 2025
142
+1
47.90M
$489.5M
Q1 2026
144
+2
45.38M
$397.2M
Q2 2026
135
-9
47.81M
$348.7M
Q3 2026
80
-55
22.66M
$146.4M
Each point is a quarter-end, from Q2 2014 to Q3 2026. A fund's 13F lists its long positions in US-listed securities as of the last day of the quarter and arrives up to 45 days later, so each point shows holdings at quarter-end, not on the day they were reported.
Common shares only; options and bonds are left out. When a fund amends a report, the amended version is the one counted.
The history follows the company's current CUSIP number (948596101). If the company's shares were ever re-issued under a different CUSIP, the quarters before the change are not part of this series, so the first point (Q2 2014) can be later than the stock's first appearance in 13F reports.
Share counts are adjusted for stock splits; none took place between these quarters. Values are in dollars as reported at the time and are not adjusted.
A quarter appears once our daily update has built its summary. If a summary cannot be built, older reports are kept and the chart shows the quarters it has until the next update repairs it.