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HowShorted

WB short interest Nasdaq Global Market

Weibo Corporation American Dep. FINRA's reported shares short for this symbol, twice a month by settlement date, shown as the regulator publishes them. No percentage is shown: an SEC filer exists but no defensible share count is available yet.

Shares short
15,689,764
vs previous settlement
+690,327 (+4.6%)
days to cover
14.65
Settlement date
15 Sep 2026

Shares short over time

Aggregate net short position time series for WB shares short

Days to cover

FINRA's own figure: reported shares short divided by the security's average daily trading volume, published alongside each settlement.

Aggregate net short position time series for WB days to cover

Fails to deliver

The SEC's fails-to-deliver figure for WB: the aggregate net balance of shares that failed to be delivered at each settlement date, published by the SEC twice a month and shown here verbatim for the trailing window. A balance is not a daily flow, and a fail has many ordinary causes; the SEC says it cannot guarantee the accuracy of the data. See what fails to deliver are and the largest balances today.

Last balance on file
31,814
11 Sep 2026
Highest in window
671,187
21 Aug 2026
Days with a balance
121
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Weibo Corporation American Dep fails to deliver

Source: U.S. Securities and Exchange Commission, fails-to-deliver data (public domain). Only settlement days with a positive balance appear; the largest balance in the window was 671K shares.

History

Every FINRA settlement we hold for WB, newest first. สณ marks a figure FINRA itself flagged as revised.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 202615,689,764+690,32714.65
31 Aug 202614,999,437โˆ’1,068,2379.30
14 Aug 202616,067,674โˆ’364,25321.95
31 Jul 202616,431,927โˆ’907,42721.09
15 Jul 202617,339,354+86,98520.76
30 Jun 202617,252,369+540,49210.81
15 Jun 202616,711,877+1,331,13512.98
29 May 202615,380,742โˆ’429,3049.66
15 May 202615,810,046+1,698,45713.33
30 Apr 202614,111,589โˆ’452,00114.26
15 Apr 202614,563,590+335,37211.22
31 Mar 202614,228,218+474,1889.64
13 Mar 202613,754,030+221,48917.26
27 Feb 202613,532,541+485,25222.25
13 Feb 202613,047,289โˆ’161,4419.72
30 Jan 202613,208,730โˆ’547,04220.50
15 Jan 202613,755,772+666,6429.48
31 Dec 202513,089,130โˆ’286,91817.85
15 Dec 202513,376,048โˆ’602,65713.03
28 Nov 202513,978,705โˆ’1,797,16714.18
14 Nov 202515,775,872+397,89111.83
31 Oct 202515,377,981+63,90419.93
15 Oct 202515,314,077โˆ’188,95813.61
30 Sep 202515,503,035โˆ’502,86211.36
15 Sep 202516,005,897+127,83811.18
29 Aug 202515,878,059+607,19611.59
15 Aug 202515,270,863+198,04011.17
31 Jul 202515,072,823โˆ’600,62519.68
15 Jul 202515,673,448+68,27418.16
30 Jun 202515,605,174โˆ’23,19617.21
13 Jun 202515,628,370โˆ’469,86915.21
30 May 202516,098,239+986,4638.86
15 May 202515,111,776โˆ’173,74817.30
30 Apr 202515,285,524โˆ’2,233,97614.79
15 Apr 202517,519,500โˆ’345,0896.62
31 Mar 202517,864,589โˆ’604,8939.10
14 Mar 202518,469,482+887,34010.75
28 Feb 202517,582,142+144,3648.15
14 Feb 202517,437,778+161,30711.07
31 Jan 202517,276,471+108,32921.10
15 Jan 202517,168,142โˆ’939,16418.17
31 Dec 202418,107,306+275,90717.03
13 Dec 202417,831,399โˆ’755,91310.73
29 Nov 202418,587,312+548,03611.13
15 Nov 202418,039,276โˆ’1,137,47212.16
31 Oct 202419,176,748โˆ’147,93216.10
15 Oct 202419,324,680+1,5515.10
30 Sep 202419,323,129+1,247,3776.48
13 Sep 202418,075,752โˆ’16,52715.41
30 Aug 202418,092,279+226,21111.91
15 Aug 202417,866,068+157,81910.80
31 Jul 202417,708,249+535,12413.44
15 Jul 202417,173,125+605,37813.05
28 Jun 202416,567,747โˆ’401,38711.33
14 Jun 202416,969,134+3,300,7637.19
31 May 202413,668,371โˆ’427,9466.91
15 May 202414,096,317+2,103,5347.30
30 Apr 202411,992,783+1,254,3637.10
15 Apr 202410,738,420โˆ’64,9884.33
28 Mar 202410,803,408โˆ’100,2794.08
15 Mar 202410,903,687+27,2074.69
29 Feb 202410,876,480+189,7773.89
15 Feb 202410,686,703+181,4785.02
31 Jan 202410,505,225โˆ’484,1244.95
12 Jan 202410,989,349โˆ’602,3256.51
29 Dec 202311,591,674โˆ’72,6535.08
15 Dec 202311,664,327+8,113,3573.44
30 Nov 20233,550,970โˆ’7,2351.85
15 Nov 20233,558,205โˆ’239,3624.45
31 Oct 20233,797,567+46,3065.72
13 Oct 20233,751,261โˆ’400,8053.47
29 Sep 20234,152,066โˆ’99,9194.04
15 Sep 20234,251,985+51,4026.00
31 Aug 20234,200,583+6,4862.96
15 Aug 20234,194,097+139,5924.54
31 Jul 20234,054,505โˆ’495,1843.27
14 Jul 20234,549,689โˆ’89,3934.77
30 Jun 20234,639,082โˆ’217,9123.96
15 Jun 20234,856,994โˆ’630,0053.72
31 May 20235,486,999สณ+358,8314.00
15 May 20235,128,168+232,5359.30
28 Apr 20234,895,633+388,2976.64
14 Apr 20234,507,336โˆ’392,3924.58
31 Mar 20234,899,728โˆ’1,758,8672.92
15 Mar 20236,658,595โˆ’291,8435.63
28 Feb 20236,950,438โˆ’169,5126.63
15 Feb 20237,119,950+686,2297.14
31 Jan 20236,433,721โˆ’1,553,5544.36
13 Jan 20237,987,275โˆ’231,6282.82
30 Dec 20228,218,903โˆ’276,4086.73
15 Dec 20228,495,311+1,484,6895.06
30 Nov 20227,010,622+95,9105.13
15 Nov 20226,914,712โˆ’815,7586.02
31 Oct 20227,730,470โˆ’1,001,4125.45
14 Oct 20228,731,882+19,50715.36
30 Sep 20228,712,375+802,8059.79
15 Sep 20227,909,570+696,2619.20
31 Aug 20227,213,309+208,1108.88
15 Aug 20227,005,199+1,5459.89
29 Jul 20227,003,654+362,13110.91
15 Jul 20226,641,523โˆ’970,7088.38
30 Jun 20227,612,231โˆ’148,5205.01
15 Jun 20227,760,751โˆ’3,392,4143.77
31 May 202211,153,165+957,7279.40
13 May 202210,195,438โˆ’308,29810.14
29 Apr 202210,503,736โˆ’565,37012.22
14 Apr 202211,069,106โˆ’158,32816.34
31 Mar 202211,227,434โˆ’1,382,1257.48
15 Mar 202212,609,559โˆ’539,4499.35
28 Feb 202213,149,008โˆ’3,008,55815.53
15 Feb 202216,157,566+3,436,40713.74
31 Jan 202212,721,159+6,190,6424.96
14 Jan 20226,530,517โˆ’10,896,8482.60
31 Dec 202117,427,365โˆ’1,946,72811.54
15 Dec 202119,374,093+2,561,7037.61
30 Nov 202116,812,390+1,380,7488.94
15 Nov 202115,431,642+272,24112.72
29 Oct 202115,159,401+901,19917.28
15 Oct 202114,258,202+436,92225.82
30 Sep 202113,821,280+1,129,60316.29
15 Sep 202112,691,677+559,79617.47
31 Aug 202112,131,881+2,775,1106.58
13 Aug 20219,356,771โˆ’295,12114.80
30 Jul 20219,651,892+5,9179.54
15 Jul 20219,645,975โˆ’2,538,8632.72
30 Jun 202112,184,838โˆ’401,23513.55
15 Jun 202112,586,073สณ+135,94713.10
28 May 202112,450,126โˆ’93,9649.19
14 May 202112,544,090โˆ’264,2408.20
30 Apr 202112,808,330โˆ’1,355,14112.01
15 Apr 202114,163,471+655,28916.56
31 Mar 202113,508,182+4,431,5975.59
15 Mar 20219,076,585+1,039,3987.43
26 Feb 20218,037,187+415,2685.05
12 Feb 20217,621,919โˆ’287,6306.11
29 Jan 20217,909,549โˆ’1,339,1003.73
15 Jan 20219,248,649โˆ’617,7328.59
31 Dec 20209,866,381+251,1644.95
15 Dec 20209,615,217โˆ’383,33412.19
30 Nov 20209,998,551โˆ’223,63412.76
13 Nov 202010,222,185+348,0118.36
30 Oct 20209,874,174+315,16012.17
15 Oct 20209,559,014โˆ’930,1677.30
30 Sep 202010,489,181โˆ’1,745,0629.05
15 Sep 202012,234,243+409,37512.26
31 Aug 202011,824,868โˆ’126,68211.41
14 Aug 202011,951,550โˆ’313,07214.65
31 Jul 202012,264,622+783,8689.35
15 Jul 202011,480,754+612,4955.08
30 Jun 202010,868,259โˆ’1,130,3136.48
15 Jun 202011,998,572โˆ’656,4137.68
29 May 202012,654,985+1,876,4474.02
15 May 202010,778,538สณโˆ’545,0449.52
30 Apr 202011,323,582+981,12112.08
15 Apr 202010,342,461+792,3207.77
31 Mar 20209,550,141โˆ’1,705,0174.73
13 Mar 202011,255,158โˆ’1,384,3655.53
28 Feb 202012,639,523โˆ’1,248,3524.02
14 Feb 202013,887,875+680,7918.63
31 Jan 202013,207,084+1,315,5296.35
15 Jan 202011,891,555+611,8286.13
31 Dec 201911,279,727โˆ’188,16711.58
13 Dec 201911,467,894+147,2999.86
29 Nov 201911,320,595โˆ’61,3825.21
15 Nov 201911,381,977โˆ’1,103,5153.81
31 Oct 201912,485,492โˆ’152,8088.31
15 Oct 201912,638,300โˆ’1,070,5928.41
30 Sep 201913,708,892+678,7368.66
13 Sep 201913,030,156+621,5374.55
30 Aug 201912,408,619+135,2164.69
15 Aug 201912,273,403+938,9945.74
31 Jul 201911,334,409โˆ’2,270,2855.92
15 Jul 201913,604,694+2,223,4928.02
28 Jun 201911,381,202โˆ’743,0635.72
14 Jun 201912,124,265+284,8466.03
31 May 201911,839,419+3,899,3953.23
15 May 20197,940,024+527,4065.59
30 Apr 20197,412,618โˆ’88,9404.89
15 Apr 20197,501,558โˆ’1,660,4463.71
29 Mar 20199,162,004+381,8445.20
15 Mar 20198,780,160โˆ’1,271,9133.16
28 Feb 201910,052,073+1,418,2763.57
15 Feb 20198,633,797โˆ’161,3564.77
31 Jan 20198,795,153+785,8912.95
15 Jan 20198,009,262+1,127,3193.00
31 Dec 20186,881,943+372,5593.49
14 Dec 20186,509,384+440,5752.44
30 Nov 20186,068,809โˆ’1,100,9832.28
15 Nov 20187,169,792+262,1123.16
31 Oct 20186,907,680โˆ’1,451,3192.99
15 Oct 20188,358,999+503,6532.53
28 Sep 20187,855,346+329,8174.82
14 Sep 20187,525,529+560,8733.29
31 Aug 20186,964,656โˆ’135,8203.39
15 Aug 20187,100,476+134,6562.33
31 Jul 20186,965,820โˆ’744,0324.00
13 Jul 20187,709,852สณ+19,1784.82
29 Jun 20187,690,674+632,3552.61
15 Jun 20187,058,319+385,1643.02
31 May 20186,673,155โˆ’60,7602.99
15 May 20186,733,915+2,086,2701.64
30 Apr 20184,647,645โˆ’550,1353.20
13 Apr 20185,197,780+31,8293.10
29 Mar 20185,165,951+525,4272.42
15 Mar 20184,640,524โˆ’357,4282.99
28 Feb 20184,997,952โˆ’36,7342.50
15 Feb 20185,034,686โˆ’417,9861.78
31 Jan 20185,452,672โˆ’387,4203.17
12 Jan 20185,840,092+45,7793.43
29 Dec 20175,794,313โ€“5.76

Scroll inside the table for earlier settlements, back to 29 Dec 2017.

Questions

Frequently asked questions

What is WB's short interest?
15,689,764 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, up 690,327 from the previous settlement.
Why is there no percentage for WB?
Because no defensible share count exists to divide by: an SEC filer exists but no defensible share count is available yet. The symbol maps to an SEC filer, but its share count cannot be used yet. A newly listed company needs two cover-page counts on file before the first is trusted; a split or an unexplained jump pauses publication until a fresh SEC count corroborates it; a secondary share class publishes under the company's primary line; and a foreign filer's short count is in depositary-share units. This page upgrades to a percentage automatically once a defensible count exists.
What is WB's days to cover?
14.65 days for settlement date 15 Sep 2026: FINRA's own short interest ratio, the reported shares short divided by average daily trading volume, published in the same file and shown verbatim. We hold no volume data ourselves.
Is this the short float?
No. This page shows FINRA's share count only. Short float divides that count by the public float, and short interest as we publish it elsewhere divides it by shares outstanding from SEC filings. Neither denominator is available for this line, so neither ratio is shown.
How often does this update?
FINRA member firms report short positions as of the 15th and the last business day of each month, and FINRA publishes the consolidated figures about nine business days later. We ingest each file the day it appears and re-read recent settlements for revisions.

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