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Soundthinking, Inc.

SSTI
Exchange
Nasdaq
Industry
Services-Prepackaged Software
SEC CIK
0001351636

In the last 90 days, Soundthinking, Inc. insiders filed 0 open-market purchases and 1 sale; 76 institutions reported holding it in 13F filings for Q2 2026, worth $63.8M in total; no superinvestor holds it.

Four kinds of short-selling data, each measuring something different:

  • Short interest: shares sold short and not yet bought back, as of a settlement date. FINRA publishes it twice a month, about eight business days after the settlement date.
  • Daily short volume: shares sold short each day in off-exchange trades reported to FINRA. It counts trades, not open positions, and is published the next day.
  • Fails-to-deliver: shares not delivered by the settlement date. The SEC publishes them twice a month, about two weeks late.
  • ATS (dark pool) volume: weekly volume on alternative trading systems and other off-exchange venues. FINRA publishes it two to four weeks after the week.

More in the glossary.

Short interest

Shares sold short and not yet bought back, from FINRA, on every settlement date in the last two years.

Short interest
183.7K
Shares, settlement Oct 30, 2026
Change
−9.79K
−5.1% vs. Oct 15, 2026
Days to cover
1.69
Short interest ÷ average daily volume
Average daily volume
108.7K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 150,058 sharesNov 15, 2024: 145,975 sharesNov 29, 2024: 175,263 sharesDec 13, 2024: 183,156 sharesDec 31, 2024: 165,527 sharesJan 15, 2025: 162,515 sharesJan 31, 2025: 163,494 sharesFeb 14, 2025: 168,306 sharesFeb 28, 2025: 160,992 sharesMar 14, 2025: 168,528 sharesMar 31, 2025: 189,638 sharesApr 15, 2025: 205,965 sharesApr 30, 2025: 214,106 sharesMay 15, 2025: 197,304 sharesMay 30, 2025: 188,569 sharesJun 13, 2025: 156,889 sharesJun 30, 2025: 112,664 sharesJul 15, 2025: 119,709 sharesJul 31, 2025: 122,570 sharesAug 15, 2025: 136,531 sharesAug 29, 2025: 129,948 sharesSep 15, 2025: 184,564 sharesSep 30, 2025: 214,576 sharesOct 15, 2025: 225,599 sharesOct 31, 2025: 341,823 sharesNov 14, 2025: 431,144 sharesNov 28, 2025: 467,357 sharesDec 15, 2025: 433,942 sharesDec 31, 2025: 473,999 sharesJan 15, 2026: 643,334 sharesJan 30, 2026: 663,642 sharesFeb 13, 2026: 668,142 sharesFeb 27, 2026: 676,099 sharesMar 13, 2026: 687,630 sharesMar 31, 2026: 802,078 sharesApr 15, 2026: 743,187 sharesApr 30, 2026: 745,663 sharesMay 15, 2026: 680,624 sharesMay 29, 2026: 670,865 sharesJun 15, 2026: 558,299 sharesJun 30, 2026: 418,515 sharesJul 15, 2026: 390,586 sharesJul 31, 2026: 455,405 sharesAug 14, 2026: 352,271 sharesAug 31, 2026: 273,393 sharesSep 15, 2026: 320,079 sharesSep 30, 2026: 288,211 sharesOct 15, 2026: 193,487 sharesOct 30, 2026: 183,700 shares
Short interest in SSTI by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 2026183.7K−9.79K−5.1%108.7K1.69
Oct 15, 2026193.5K−94.7K−32.9%79.3K2.44
Sep 30, 2026288.2K−31.9K−10.0%547.5K1.00
Sep 15, 2026320.1K+46.7K+17.1%88.7K3.61
Aug 31, 2026273.4K−78.9K−22.4%207.9K1.32
Aug 14, 2026352.3K−103.1K−22.7%153.0K2.30
Jul 31, 2026455.4K+64.8K+16.6%65.0K7.01
Jul 15, 2026390.6K−27.9K−6.7%74.2K5.26
Jun 30, 2026418.5K−139.8K−25.0%270.7K1.55
Jun 15, 2026558.3K−112.6K−16.8%122.4K4.56
May 29, 2026670.9K−9.76K−1.4%94.6K7.09
May 15, 2026680.6K−65.0K−8.7%114.6K5.94
Apr 30, 2026745.7K+2.48K+0.3%66.1K11.29
Apr 15, 2026743.2K−58.9K−7.3%89.9K8.27
Mar 31, 2026802.1K+114.4K+16.6%108.4K7.40
Mar 13, 2026687.6K+11.5K+1.7%208.0K3.31
Feb 27, 2026676.1K+7.96K+1.2%172.5K3.92
Feb 13, 2026668.1K+4.50K+0.7%254.9K2.62
Jan 30, 2026663.6K+20.3K+3.2%161.5K4.11
Jan 15, 2026643.3K+169.3K+35.7%181.7K3.54
Dec 31, 2025474.0K+40.1K+9.2%145.9K3.25
Dec 15, 2025433.9K−33.4K−7.2%216.4K2.00
Nov 28, 2025467.4K+36.2K+8.4%169.9K2.75
Nov 14, 2025431.1K+89.3K+26.1%165.3K2.61
Oct 31, 2025341.8K+116.2K+51.5%124.8K2.74
Oct 15, 2025225.6K+11.0K+5.1%52.2K4.32
Sep 30, 2025214.6K+30.0K+16.3%68.0K3.16
Sep 15, 2025184.6K+54.6K+42.0%78.3K2.36
Aug 29, 2025129.9K−6.58K−4.8%51.9K2.50
Aug 15, 2025136.5K+14.0K+11.4%79.2K1.72
Jul 31, 2025122.6K+2.86K+2.4%44.9K2.73
Jul 15, 2025119.7K+7.04K+6.3%63.3K1.89
Jun 30, 2025112.7K−44.2K−28.2%66.5K1.69
Jun 13, 2025156.9K−31.7K−16.8%34.7K4.52
May 30, 2025188.6K−8.73K−4.4%45.2K4.17
May 15, 2025197.3K−16.8K−7.9%43.6K4.53
Apr 30, 2025214.1K+8.14K+4.0%40.6K5.27
Apr 15, 2025206.0K+16.3K+8.6%57.1K3.60
Mar 31, 2025189.6K+21.1K+12.5%131.7K1.44
Mar 14, 2025168.5K+7.54K+4.7%50.4K3.34
Feb 28, 2025161.0K−7.31K−4.4%97.0K1.66
Feb 14, 2025168.3K+4.81K+2.9%28.1K5.99
Jan 31, 2025163.5K+979+0.6%34.8K4.70
Jan 15, 2025162.5K−3.01K−1.8%44.7K3.63
Dec 31, 2024165.5K−17.6K−9.6%92.9K1.78
Dec 13, 2024183.2K+7.89K+4.5%62.5K2.93
Nov 29, 2024175.3K+29.3K+20.1%44.7K3.92
Nov 15, 2024146.0K−4.08K−2.7%88.7K1.65
Oct 31, 2024150.1K−68.2K−31.3%47.2K3.18

Fails-to-deliver

Shares that weren't delivered by the settlement date, from the SEC, for the last 30 dates with fails. The price is the previous day's closing price published by the SEC.

Fails-to-deliver in SSTI by settlement date
Settlement dateSharesPriceValue
Oct 9, 2026148$8.26$1.22K
Sep 30, 2026629$8.21$5.16K
Sep 24, 2026180$5.68$1.02K
Sep 18, 20261,695$5.86$9.93K
Sep 14, 2026308$5.61$1.73K
Sep 8, 202625$6.12$153
Sep 2, 202622$5.97$131.34
Sep 1, 202622$6.44$141.68
Aug 28, 202612,500$6.32$79.0K
Aug 25, 2026168$6.02$1.01K
Aug 19, 20261,544$5.90$9.11K
Aug 17, 2026144,662$6.20$896.9K
Aug 12, 202617$8.11$137.87
Jul 24, 2026915$8.25$7.55K
Jul 2, 20261,250$9.65$12.1K
Jun 30, 20265,591$8.81$49.3K
Jun 29, 202611,986$8.19$98.2K
Jun 25, 20262$8.30$16.6
Jun 23, 202638$7.48$284.24
Jun 17, 202646$7.53$346.38
Jun 15, 2026200$8.03$1.61K
Jun 12, 2026496$7.98$3.96K
Jun 9, 2026387$7.70$2.98K
Jun 5, 2026272$7.64$2.08K
Jun 4, 202672$7.60$547.2
Jun 3, 2026705$7.57$5.34K
Jun 2, 20261,679$7.86$13.2K
May 22, 202692$6.64$610.88
May 20, 2026139$6.75$938.25
May 18, 2026620$6.62$4.10K

Daily short volume

Off-exchange short-sale volume, not short interest: shares sold short each day in trades reported to FINRA, for the last 30 trading days.

The short volume ratio isn't a sentiment gauge: market makers sell short to fill buy orders and to hedge, so short sales are usually about half of off-exchange volume.

Off-exchange short volume in SSTI by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 10, 202656,1650232,69124.1%
Nov 9, 20266,065036,94616.4%
Nov 6, 20267,092048,55714.6%
Nov 5, 20264,679015,89129.4%
Nov 4, 20261,681024,0127.0%
Nov 3, 20265,381021,74024.8%
Nov 2, 20263,581018,47519.4%
Oct 30, 202623,49123471,49932.9%
Oct 29, 20264,697022,21621.1%
Oct 28, 20269,304039,75923.4%
Oct 27, 20269,865015,74362.7%
Oct 26, 20263,145010,14431.0%
Oct 23, 20263,002041,1497.3%
Oct 22, 20262,523017,30914.6%
Oct 21, 202616,4410397,7274.1%
Oct 20, 202610,828023,79845.5%
Oct 19, 202611,657044,08426.4%
Oct 16, 20263,290015,99920.6%
Oct 15, 202610,869013,39681.1%
Oct 14, 20264,869018,26026.7%
Oct 13, 20263,265016,33920.0%
Oct 12, 20267,906013,64657.9%
Oct 9, 20268,025021,54937.2%
Oct 8, 202621,567036,17759.6%
Oct 7, 20265,816024,61623.6%
Oct 6, 20268,633029,20429.6%
Oct 5, 20265,367024,54421.9%
Oct 2, 202611,355038,94929.2%
Oct 1, 20269,53010055,49817.2%
Sep 30, 202673,670152234,75731.4%

ATS (dark pool) volume

Weekly volume on alternative trading systems (ATS) and other off-exchange (OTC) venues, from FINRA, for the last 12 weeks. ATS share is ATS volume ÷ (ATS + OTC volume), not a share of all trading.

Weekly ATS and OTC volume in SSTI
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T257,6061,90485,24988740.3%
Sep 28, 2026T21,041,6969,7741,771,52318,55637.0%
Sep 21, 2026T269,0251,862119,23478036.7%
Sep 14, 2026T267,1001,74347,6661,11258.5%
Sep 7, 2026T2101,7612,21286,03889254.2%
Aug 31, 2026T2167,4213,003112,8821,14259.7%
Aug 24, 2026T2163,9613,014128,8241,25856.0%
Aug 17, 2026T2342,1477,899347,1502,41949.6%
Aug 10, 2026T2323,5604,751207,6602,25560.9%
Aug 3, 2026T275,5443,85671,03099151.5%
Jul 27, 2026T287,8162,65531,1251,29973.8%
Jul 20, 2026T2133,8553,65047,15595273.9%