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WB in the 13F filings

Weibo Corp · CUSIP 948596101

Sector · Software and IT servicesTheme · Internet, programming and data services
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023
Quarter end
31 Mar 2026
the date the book describes
Filed
15 May 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
14
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 1 listed it in both
Shares listed
10,149,500
combined, among listed positions
Reported value
$89m
combined, at the quarter end

Among the 91 comparable managers: 7 buyers (opened or added shares) and 7 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +251,226.

Managers listing WB in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

14 of 14 holders

ActionFiling
Acadian Asset Management LLC5,565,675$49m0.07%Trimmed-293,20213 May 2026 (the filing on sec.gov)
Wellington Management Group LLP1,665,595$15munder 0.1%Added+718,74915 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP670,093$5.9munder 0.1%Added+86,20015 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.635,256$5.6munder 0.1%Trimmed-24,98815 May 2026 (the filing on sec.gov)
Two Sigma Investments LP536,188$4.7munder 0.1%Added+493,98815 May 2026 (the filing on sec.gov)
Invesco Ltd502,931$4.4munder 0.1%Added+10,98012 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC230,030$2.0munder 0.1%Trimmed-251,15715 May 2026 (the filing on sec.gov)
Jane Street Group LLC174,635$1.5munder 0.1%Trimmed-297,30512 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC65,175$570kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Verition Fund Management LLC52,802$462kunder 0.1%Added+39,30515 May 2026 (the filing on sec.gov)
Citadel Advisors LLC20,853$182kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC19,770$173kunder 0.1%Trimmed-127,97315 May 2026 (the filing on sec.gov)
Millennium Management LLC10,288$90kunder 0.1%Trimmed-91,96615 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)209$2kunder 0.1%Held015 May 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (2)

Exited (1)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
4 in Q3 2024 to 1 in Q2 2026

Tracked managers listing it, at least.

051015201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
WB by quarter
QuarterHoldersReported valueBuyersSellers
Q3 20141$577kn.a.n.a.
Q1 20151$5.7mn.a.n.a.
Q2 20151$14mn.a.n.a.
Q3 20151$5.8mn.a.n.a.
Q4 20152$22mn.a.n.a.
Q1 20162$25mn.a.n.a.
Q2 20162$19mn.a.n.a.
Q3 201610$194mn.a.n.a.
Q4 20167$115mn.a.n.a.
Q1 20173$111mn.a.n.a.
Q2 201715$477mn.a.n.a.
Q3 20178$809mn.a.n.a.
Q4 20179$670mn.a.n.a.
Q1 201810$885mn.a.n.a.
Q2 20189$726mn.a.n.a.
Q3 20186$161mn.a.n.a.
Q4 20184$261mn.a.n.a.
Q1 20195$320mn.a.n.a.
Q2 20196$280mn.a.n.a.
Q3 20195$282mn.a.n.a.
Q4 20193$224mn.a.n.a.
Q1 20203$173mn.a.n.a.
Q2 20203$294mn.a.n.a.
Q3 20204$338mn.a.n.a.
Q4 20204$412mn.a.n.a.
Q1 20213$448mn.a.n.a.
Q2 20214$378mn.a.n.a.
Q3 20213$304mn.a.n.a.
Q4 20213$76mn.a.n.a.
Q1 20221$8.3mn.a.n.a.
Q2 20224$45mn.a.n.a.
Q3 20222$17mn.a.n.a.
Q4 20223$26mn.a.n.a.
Q1 20234$86mn.a.n.a.
Q2 20233$36mn.a.n.a.
Q3 20234$43mn.a.n.a.
Q4 20234$64m40
Q1 20242$7.6m02
Q2 20242$19m20
Q3 20244$94m31
Q4 20243$75m13
Q1 20252$58m11
Q2 20251$57m01
Q3 20252$83m02
Q4 20251$60m810
Q1 20261$49m77
Q2 20261$37m67

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

WB and GOOGL →WB and META →WB and SPCX →Choose a stock to compare with WB →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own WB, latest filings →Back to the 13F Explorer →