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HowShorted

KNSA short interest Nasdaq Global Market

Kiniksa Pharmaceuticals Intern. 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
3,876,769
vs previous settlement
+88,070 (+2.3%)
days to cover
7.21
Settlement date
15 Sep 2026

Shares short over time

Aggregate net short position time series for KNSA 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 KNSA days to cover

Fails to deliver

The SEC's fails-to-deliver figure for KNSA: 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
1
9 Sep 2026
Highest in window
19,631
30 Jul 2026
Days with a balance
32
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Kiniksa Pharmaceuticals Intern 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 20K shares.

History

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

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 20263,876,769+88,0707.21
31 Aug 20263,788,699โˆ’494,9298.69
14 Aug 20264,283,628โˆ’33,2319.56
31 Jul 20264,316,859โˆ’193,3294.99
15 Jul 20264,510,188+355,4376.85
30 Jun 20264,154,751+1,208,0972.88
15 Jun 20262,946,654โˆ’95,6765.73
29 May 20263,042,330โˆ’133,0705.56
15 May 20263,175,400โˆ’353,9765.55
30 Apr 20263,529,376โˆ’564,1713.20
15 Apr 20264,093,547+3,4117.22
31 Mar 20264,090,136+322,2226.79
13 Mar 20263,767,914+383,8495.10
27 Feb 20263,384,065+327,6915.50
13 Feb 20263,056,374โˆ’8,1537.86
30 Jan 20263,064,527โˆ’295,0494.21
15 Jan 20263,359,576โˆ’211,1364.61
31 Dec 20253,570,712+466,9399.17
15 Dec 20253,103,773+302,2368.09
28 Nov 20252,801,537โˆ’84,6577.94
14 Nov 20252,886,194+58,6508.30
31 Oct 20252,827,544+267,4234.33
15 Oct 20252,560,121+41,7506.94
30 Sep 20252,518,371+84,9156.25
15 Sep 20252,433,456โˆ’274,0165.15
29 Aug 20252,707,472+614,6787.15
15 Aug 20252,092,794โˆ’336,7113.06
31 Jul 20252,429,505โˆ’104,0143.49
15 Jul 20252,533,519+466,8024.26
30 Jun 20252,066,717โˆ’292,3461.45
13 Jun 20252,359,063โˆ’358,9522.73
30 May 20252,718,015โˆ’587,6535.46
15 May 20253,305,668โˆ’21,0066.63
30 Apr 20253,326,674+10,6634.21
15 Apr 20253,316,011+186,2954.83
31 Mar 20253,129,716+57,1616.16
14 Mar 20253,072,555+71,7403.70
28 Feb 20253,000,815+39,3965.64
14 Feb 20252,961,419+1,032,3194.91
31 Jan 20251,929,100โˆ’180,0783.19
15 Jan 20252,109,178โˆ’1,279,3214.13
31 Dec 20243,388,499+130,9807.97
13 Dec 20243,257,519โˆ’761,94911.95
29 Nov 20244,019,468โˆ’95,10016.63
15 Nov 20244,114,568โˆ’100,10912.11
31 Oct 20244,214,677+207,95913.24
15 Oct 20244,006,718โˆ’80,54613.72
30 Sep 20244,087,264โˆ’549,1696.38
13 Sep 20244,636,433+86,53215.24
30 Aug 20244,549,901โˆ’160,61316.51
15 Aug 20244,710,514+201,18012.83
31 Jul 20244,509,334+565,9825.82
15 Jul 20243,943,352โˆ’619,9499.03
28 Jun 20244,563,301โˆ’99,9037.19
14 Jun 20244,663,204+546,00817.16
31 May 20244,117,196+127,01013.99
15 May 20243,990,186+76,02412.22
30 Apr 20243,914,162+270,5179.12
15 Apr 20243,643,645+433,83910.85
28 Mar 20243,209,806+342,3339.17
15 Mar 20242,867,473+87,5285.94
29 Feb 20242,779,945+79,7118.05
15 Feb 20242,700,234โˆ’56,4858.45
31 Jan 20242,756,719+143,7489.89
12 Jan 20242,612,971โˆ’257,6843.60
29 Dec 20232,870,655โˆ’404,9255.22
15 Dec 20233,275,580โˆ’154,8296.72
30 Nov 20233,430,409+18,12610.55
15 Nov 20233,412,283สณ+198,4436.17
31 Oct 20233,213,840โˆ’685,9808.69
13 Oct 20233,899,820+33,27214.53
29 Sep 20233,866,548+46,48414.63
15 Sep 20233,820,064โˆ’32,17713.41
31 Aug 20233,852,241โˆ’53,58612.21
15 Aug 20233,905,827+470,2227.58
31 Jul 20233,435,605+809,5853.17
14 Jul 20232,626,020โˆ’37,4037.38
30 Jun 20232,663,423โˆ’72,2105.55
15 Jun 20232,735,633+82,8487.02
31 May 20232,652,785โˆ’129,9448.24
15 May 20232,782,729โˆ’355,3314.53
28 Apr 20233,138,060+239,61910.71
14 Apr 20232,898,441โˆ’107,5218.32
31 Mar 20233,005,962+488,4006.64
15 Mar 20232,517,562โˆ’200,2015.22
28 Feb 20232,717,763สณโˆ’11,6878.31
15 Feb 20232,729,450โˆ’23,7687.30
31 Jan 20232,753,218โˆ’140,2599.97
13 Jan 20232,893,477+74,5107.30
30 Dec 20222,818,967+778,0876.70
15 Dec 20222,040,880โˆ’600,4626.41
30 Nov 20222,641,342โˆ’148,9419.75
15 Nov 20222,790,283+62,1224.86
31 Oct 20222,728,161+73,97410.95
14 Oct 20222,654,187โˆ’221,2805.59
30 Sep 20222,875,467+450,02010.23
15 Sep 20222,425,447+161,69010.01
31 Aug 20222,263,757+306,73411.17
15 Aug 20221,957,023+23,3853.04
29 Jul 20221,933,638โˆ’426,6007.61
15 Jul 20222,360,238โˆ’67,4899.29
30 Jun 20222,427,727โˆ’119,6646.67
15 Jun 20222,547,391+61,0839.70
31 May 20222,486,308+36,52010.70
13 May 20222,449,788+156,9397.42
29 Apr 20222,292,849โˆ’13,4859.47
14 Apr 20222,306,334โˆ’276,43010.26
31 Mar 20222,582,764โˆ’679,9015.92
15 Mar 20223,262,665โˆ’12,3479.54
28 Feb 20223,275,012+466,9269.88
15 Feb 20222,808,086+84,32511.19
31 Jan 20222,723,761+445,4285.79
14 Jan 20222,278,333+22,0286.62
31 Dec 20212,256,305โˆ’424,6643.56
15 Dec 20212,680,969+248,6266.56
30 Nov 20212,432,343+264,8067.92
15 Nov 20212,167,537โˆ’1,073,7534.18
29 Oct 20213,241,290+49,66514.31
15 Oct 20213,191,625โˆ’422,30613.63
30 Sep 20213,613,931โˆ’187,7069.31
15 Sep 20213,801,637โˆ’293,86112.20
31 Aug 20214,095,498โˆ’592,86410.07
13 Aug 20214,688,362โˆ’187,6455.96
30 Jul 20214,876,007+94,53110.19
15 Jul 20214,781,476+106,20012.75
30 Jun 20214,675,276+490,40210.43
15 Jun 20214,184,874สณโˆ’212,8157.45
28 May 20214,397,689โˆ’245,86917.04
14 May 20214,643,558+31,95515.71
30 Apr 20214,611,603+382,49113.86
15 Apr 20214,229,112+453,3839.34
31 Mar 20213,775,729+121,2943.55
15 Mar 20213,654,435โˆ’213,1117.99
26 Feb 20213,867,546+79,0239.80
12 Feb 20213,788,523+51,79714.85
29 Jan 20213,736,726โˆ’151,29711.54
15 Jan 20213,888,023โˆ’140,87920.97
31 Dec 20204,028,902+1,813,4339.45
15 Dec 20202,215,469โˆ’24,8558.34
30 Nov 20202,240,324โˆ’20,2075.80
13 Nov 20202,260,531โˆ’432,1147.01
30 Oct 20202,692,645สณ+117,1648.21
15 Oct 20202,575,481โˆ’721,0894.34
30 Sep 20203,296,570+446,0829.08
15 Sep 20202,850,488โˆ’24,8949.39
31 Aug 20202,875,382+352,3748.73
14 Aug 20202,523,008โˆ’95,88911.64
31 Jul 20202,618,897โˆ’100,9634.87
15 Jul 20202,719,860โˆ’67,55010.82
30 Jun 20202,787,410+270,2588.06
15 Jun 20202,517,152+15,41812.56
29 May 20202,501,734+53,78314.09
15 May 20202,447,951สณโˆ’161,8988.87
30 Apr 20202,609,849+345,8289.11
15 Apr 20202,264,021+377,3847.33
31 Mar 20201,886,637+535,1808.74
13 Mar 20201,351,457+111,9925.05
28 Feb 20201,239,465โˆ’57,8226.39
14 Feb 20201,297,287+13,5897.77
31 Jan 20201,283,698+12,4216.60
15 Jan 20201,271,277โˆ’19,1794.07
31 Dec 20191,290,456โˆ’107,5854.37
13 Dec 20191,398,041โˆ’18,6865.73
29 Nov 20191,416,727+23,6294.02
15 Nov 20191,393,098+19,06311.00
31 Oct 20191,374,035+248,7784.16
15 Oct 20191,125,257+27,82610.28
30 Sep 20191,097,431+84,24713.28
13 Sep 20191,013,184โˆ’44,5739.29
30 Aug 20191,057,757+26,71515.52
15 Aug 20191,031,042+16,78414.88
31 Jul 20191,014,258+16,25713.60
15 Jul 2019998,001+28,9938.13
28 Jun 2019969,008โˆ’14,4855.69
14 Jun 2019983,493สณโˆ’9,78911.58
31 May 2019993,282+111,65713.09
15 May 2019881,625+97,98215.96
30 Apr 2019783,643+5867.79
15 Apr 2019783,057โˆ’55,95811.67
29 Mar 2019839,015+61,3099.95
15 Mar 2019777,706+91,2514.82
28 Feb 2019686,455+36,3395.68
15 Feb 2019650,116โˆ’37,2893.26
31 Jan 2019687,405+190,2622.14
15 Jan 2019497,143โˆ’35,8935.93
31 Dec 2018533,036+104,1732.93
14 Dec 2018428,863โˆ’16,4333.70
30 Nov 2018445,296+55,7389.07
15 Nov 2018389,558+25,5326.70
31 Oct 2018364,026+21,9568.79
15 Oct 2018342,070โˆ’132,1173.60
28 Sep 2018474,187+354,1461.63
14 Sep 2018120,041+73,8141.00
31 Aug 201846,227+10,3761.00
15 Aug 201835,851โˆ’1,5941.00
31 Jul 201837,445โˆ’1,9911.00
13 Jul 201839,436+27,1511.00
29 Jun 201812,285+2,7211.00
15 Jun 20189,564+1771.00
31 May 20189,387โ€“1.00

Scroll inside the table for earlier settlements, back to 31 May 2018.

Questions

Frequently asked questions

What is KNSA's short interest?
3,876,769 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, up 88,070 from the previous settlement.
Why is there no percentage for KNSA?
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 KNSA's days to cover?
7.21 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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