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WB

WEIBO Corp

Company with tickers: WB, WEIBF

CIK
1595761
CUSIP
948596101
Shares Outstanding
157,850,548
13F Activity (30d)
138 filings 117 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 144
Total Value: $401,535,134
Total Shares: 45,889,738
Showing 1–100 of 150 holdings by value · page 1 of 2

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 144 13F filers · Δ vs Dec 31, 2025
Top Holder
19.6%
Jun 2023 → Mar 2026 · range 12.1% – 19.6%
+1.7 pts
Top 5
51.2%
Jun 2023 → Mar 2026 · range 36.8% – 51.2%
+3.1 pts
Top 10
67.8%
Jun 2023 → Mar 2026 · range 55.2% – 67.8%
+3.7 pts
HHI
752
Jun 2023 → Mar 2026 · range 444 – 752
Broadly held +84

Quarterly Activity

vs Dec 31, 2025
New
20
Increased
41
Decreased
62
Sold Out
23
Unchanged
21
Holder count: -3
Institutional value: -21.8%
Shares held: -8.7%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Showing 100 of 150
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Holder Value (USD) % of 13F Shares Open