Skip to content
HowShorted

SLN short interest Nasdaq Global Market

Silence Therapeutics Plc Ameri. 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
2,178,055
vs previous settlement
−257,776 (-10.6%)
days to cover
2.53
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for SLN: 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
6,548
4 Sep 2026
Highest in window
78,743
24 Apr 2026
Days with a balance
69
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Silence Therapeutics Plc Ameri 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 79K shares.

History

Every FINRA settlement we hold for SLN, newest first.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 20262,178,055−257,7762.53
31 Aug 20262,435,831+3,0013.50
14 Aug 20262,432,830+595,5921.00
31 Jul 20261,837,238+264,5513.28
15 Jul 20261,572,687−160,3313.15
30 Jun 20261,733,018−333,4702.24
15 Jun 20262,066,488+9,2528.57
29 May 20262,057,236+71,3099.14
15 May 20261,985,927−170,56910.92
30 Apr 20262,156,496+81,2235.45
15 Apr 20262,075,273+242,9824.65
31 Mar 20261,832,291+102,1334.70
13 Mar 20261,730,158+176,8895.37
27 Feb 20261,553,269+2,50412.57
13 Feb 20261,550,765+173,8757.62
30 Jan 20261,376,890+48,9935.08
15 Jan 20261,327,897+68,3583.75
31 Dec 20251,259,539+140,6014.25
15 Dec 20251,118,938+71,5123.10
28 Nov 20251,047,426+125,3414.12
14 Nov 2025922,085+364,9164.87
31 Oct 2025557,169−70,7832.92
15 Oct 2025627,952−115,5284.42
30 Sep 2025743,480−65,13511.67
15 Sep 2025808,615+46,68912.95
29 Aug 2025761,926−8,52418.96
15 Aug 2025770,450−43,9289.72
31 Jul 2025814,378−108,64211.54
15 Jul 2025923,020−75,3208.89
30 Jun 2025998,340+52,8508.84
13 Jun 2025945,490−108,8027.44
30 May 20251,054,292−197,9936.52
15 May 20251,252,285−216,9305.90
30 Apr 20251,469,215−154,4065.85
15 Apr 20251,623,621+157,2824.99
31 Mar 20251,466,339+57,3486.46
14 Mar 20251,408,991+6,5438.51
28 Feb 20251,402,448−27,3326.82
14 Feb 20251,429,780+127,3043.48
31 Jan 20251,302,476+173,2653.24
15 Jan 20251,129,211+144,1835.30
31 Dec 2024985,028+52,2231.88
13 Dec 2024932,805+230,4791.42
29 Nov 2024702,326+320,8531.00
15 Nov 2024381,473+28,1571.65
31 Oct 2024353,316+18,6862.61
15 Oct 2024334,630+22,3952.25
30 Sep 2024312,235+18,0281.65
13 Sep 2024294,207+39,5722.20
30 Aug 2024254,635−95,8751.35
15 Aug 2024350,510−210,6491.01
31 Jul 2024561,159+4872.62
15 Jul 2024560,672−198,5502.44
28 Jun 2024759,222+100,7863.36
14 Jun 2024658,436+57,7627.55
31 May 2024600,674+20,0357.28
15 May 2024580,639+283,4574.55
30 Apr 2024297,182+151,4391.67
15 Apr 2024145,743−16,2691.04
28 Mar 2024162,012+69,3541.00
15 Mar 202492,658+46,4631.00
29 Feb 202446,195+11,1401.00
15 Feb 202435,055−117,1501.00
31 Jan 2024152,205+9,4741.00
12 Jan 2024142,731+10,5351.00
29 Dec 2023132,196+1,2496.12
15 Dec 2023130,947−10,9681.00
30 Nov 2023141,915+1,4081.26
15 Nov 2023140,507+5,5444.32
31 Oct 2023134,963−4,99310.57
13 Oct 2023139,956+4,2047.46
29 Sep 2023135,752+6,3559.01
15 Sep 2023129,397+9,5122.86
31 Aug 2023119,885−5,2381.00
15 Aug 2023125,123+24,1852.57
31 Jul 2023100,938+29,5643.91
14 Jul 202371,374+55,4303.61
30 Jun 202315,944+5,5821.00
15 Jun 202310,362+6481.00
31 May 20239,714−12,7221.00
15 May 202322,436−12,9471.00
28 Apr 202335,383+16,8801.00
14 Apr 202318,503+4,2951.00
31 Mar 202314,208+1,5361.00
15 Mar 202312,672−1,8331.00
28 Feb 202314,505−3,0331.00
15 Feb 202317,538−4,9111.00
31 Jan 202322,449−6591.17
13 Jan 202323,108−7,3981.00
30 Dec 202230,506−9,5491.00
15 Dec 202240,055+8,9531.00
30 Nov 202231,102+4,3751.63
15 Nov 202226,727+5,1921.00
31 Oct 202221,535−9,4371.00
14 Oct 202230,972−2,8291.00
30 Sep 202233,801+9,5651.00
15 Sep 202224,236+8,1661.00
31 Aug 202216,070−2,6741.00
15 Aug 202218,744+3,7621.00
29 Jul 202214,982−3,9031.00
15 Jul 202218,885+2,1861.00
30 Jun 202216,699+6451.00
15 Jun 202216,054−1,4411.00
31 May 202217,495+9,9691.31
13 May 20227,526−72,2011.00
29 Apr 202279,727+1932.93
14 Apr 202279,534−207,9313.93
31 Mar 2022287,465+276,67211.58
15 Mar 202210,793+1,0001.00
28 Feb 20229,793−4,3821.00
15 Feb 202214,175+7,0031.00
31 Jan 20227,172+3,8131.00
14 Jan 20223,359−2,3111.00
31 Dec 20215,670−3,6961.00
15 Dec 20219,366+6,7681.00
30 Nov 20212,598+1,1171.00
15 Nov 20211,481+8441.00
29 Oct 2021637−6641.00
15 Oct 20211,301+6183.94
30 Sep 2021683−3331.00
15 Sep 20211,016+2181.00
31 Aug 2021798−1,7861.00
13 Aug 20212,584−7223.93
30 Jul 20212,656−6941.80
15 Jul 20213,350+1,1881.45
30 Jun 20212,162+5854.63
15 Jun 20211,577−1,4162.41
28 May 20212,993+1,2412.52
14 May 20211,752+8552.99
30 Apr 2021897+761.00
15 Apr 2021821+3345.40
31 Mar 2021487−1,0551.03
15 Mar 20211,542+3644.13
26 Feb 20211,178−371.00
12 Feb 20211,215−1,4801.75
29 Jan 20212,695+8481.10
15 Jan 20211,847−3683.64
31 Dec 20202,215+175.80
15 Dec 20202,198+1,2132.96
30 Nov 2020985−1301.66
13 Nov 20201,115+3211.52
30 Oct 2020794+565.40
15 Oct 2020738−2101.98
30 Sep 2020948−1791.00
15 Sep 20201,127–1.25

Scroll inside the table for earlier settlements, back to 15 Sep 2020.

Questions

Frequently asked questions

What is SLN's short interest?
2,178,055 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 257,776 from the previous settlement.
Why is there no percentage for SLN?
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 SLN's days to cover?
2.53 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.

Ranked companies with a percentage: most shorted US stocks. Other symbols with counts only: shares short without a percentage. Browse by name: US companies A to Z.