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Federal Signal Corp

FSS
Exchange
NYSE
Industry
Motor Vehicles & Passenger Car Bodies
SEC CIK
0000277509

No open-market purchases or sales by Federal Signal Corp insiders were filed in the last 90 days; 477 institutions reported holding it in 13F filings for Q2 2026, worth $8.00B 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
4.22M
Shares, settlement Oct 30, 2026
Change
+55.3K
+1.3% vs. Oct 15, 2026
Days to cover
7.97
Short interest ÷ average daily volume
Average daily volume
529.5K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 1,826,552 sharesNov 15, 2024: 2,602,382 sharesNov 29, 2024: 2,649,396 sharesDec 13, 2024: 2,750,586 sharesDec 31, 2024: 2,537,561 sharesJan 15, 2025: 2,946,035 sharesJan 31, 2025: 2,759,841 sharesFeb 14, 2025: 3,112,913 sharesFeb 28, 2025: 3,419,562 sharesMar 14, 2025: 4,203,613 sharesMar 31, 2025: 3,959,924 sharesApr 15, 2025: 4,158,437 sharesApr 30, 2025: 4,519,586 sharesMay 15, 2025: 5,181,659 sharesMay 30, 2025: 5,041,050 sharesJun 13, 2025: 5,144,260 sharesJun 30, 2025: 4,771,459 sharesJul 15, 2025: 3,835,246 sharesJul 31, 2025: 2,868,246 sharesAug 15, 2025: 3,411,139 sharesAug 29, 2025: 2,966,557 sharesSep 15, 2025: 2,858,536 sharesSep 30, 2025: 3,368,279 sharesOct 15, 2025: 3,582,551 sharesOct 31, 2025: 3,594,248 sharesNov 14, 2025: 4,006,137 sharesNov 28, 2025: 3,859,229 sharesDec 15, 2025: 3,897,082 sharesDec 31, 2025: 3,643,070 sharesJan 15, 2026: 3,306,419 sharesJan 30, 2026: 3,223,719 sharesFeb 13, 2026: 3,322,263 sharesFeb 27, 2026: 3,155,331 sharesMar 13, 2026: 3,426,359 sharesMar 31, 2026: 3,046,744 sharesApr 15, 2026: 3,285,986 sharesApr 30, 2026: 3,498,766 sharesMay 15, 2026: 3,708,056 sharesMay 29, 2026: 3,732,945 sharesJun 15, 2026: 3,929,864 sharesJun 30, 2026: 4,189,996 sharesJul 15, 2026: 4,308,569 sharesJul 31, 2026: 4,116,191 sharesAug 14, 2026: 4,239,858 sharesAug 31, 2026: 4,058,132 sharesSep 15, 2026: 3,877,971 sharesSep 30, 2026: 3,784,692 sharesOct 15, 2026: 4,162,575 sharesOct 30, 2026: 4,217,857 shares
Short interest in FSS by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 20264.22M+55.3K+1.3%529.5K7.97
Oct 15, 20264.16M+377.9K+10.0%494.4K8.42
Sep 30, 20263.78M−93.3K−2.4%491.1K7.71
Sep 15, 20263.88M−180.2K−4.4%364.6K10.64
Aug 31, 20264.06M−181.7K−4.3%314.9K12.89
Aug 14, 20264.24M+123.7K+3.0%411.1K10.31
Jul 31, 20264.12M−192.4K−4.5%471.1K8.74
Jul 15, 20264.31M+118.6K+2.8%677.0K6.36
Jun 30, 20264.19M+260.1K+6.6%764.9K5.48
Jun 15, 20263.93M+196.9K+5.3%477.5K8.23
May 29, 20263.73M+24.9K+0.7%407.6K9.16
May 15, 20263.71M+209.3K+6.0%414.2K8.95
Apr 30, 20263.50M+212.8K+6.5%523.5K6.68
Apr 15, 20263.29M+239.2K+7.9%458.9K7.16
Mar 31, 20263.05M−379.6K−11.1%530.4K5.74
Mar 13, 20263.43M+271.0K+8.6%556.9K6.15
Feb 27, 20263.16M−166.9K−5.0%469.5K6.72
Feb 13, 20263.32M+98.5K+3.1%361.9K9.18
Jan 30, 20263.22M−82.7K−2.5%419.8K7.68
Jan 15, 20263.31M−336.7K−9.2%347.3K9.52
Dec 31, 20253.64M−254.0K−6.5%443.2K8.22
Dec 15, 20253.90M+37.9K+1.0%746.3K5.22
Nov 28, 20253.86M−146.9K−3.7%306.6K12.59
Nov 14, 20254.01M+411.9K+11.5%425.9K9.41
Oct 31, 20253.59M+11.7K+0.3%607.7K5.91
Oct 15, 20253.58M+214.3K+6.4%425.1K8.43
Sep 30, 20253.37M+509.7K+17.8%580.7K5.80
Sep 15, 20252.86M−108.0K−3.6%275.8K10.36
Aug 29, 20252.97M−444.6K−13.0%357.0K8.31
Aug 15, 20253.41M+542.9K+18.9%703.5K4.85
Jul 31, 20252.87M−967.0K−25.2%986.6K2.91
Jul 15, 20253.84M−936.2K−19.6%618.5K6.20
Jun 30, 20254.77M−372.8K−7.3%564.6K8.45
Jun 13, 20255.14M+103.2K+2.1%451.0K11.41
May 30, 20255.04M−140.6K−2.7%317.9K15.86
May 15, 20255.18M+662.1K+14.7%571.6K9.06
Apr 30, 20254.52M+361.1K+8.7%709.0K6.37
Apr 15, 20254.16M+198.5K+5.0%679.7K6.12
Mar 31, 20253.96M−243.7K−5.8%710.8K5.57
Mar 14, 20254.20M+784.1K+22.9%690.1K6.09
Feb 28, 20253.42M+306.6K+9.9%649.3K5.27
Feb 14, 20253.11M+353.1K+12.8%379.8K8.20
Jan 31, 20252.76M−186.2K−6.3%387.6K7.12
Jan 15, 20252.95M+408.5K+16.1%344.6K8.55
Dec 31, 20242.54M−213.0K−7.7%365.0K6.95
Dec 13, 20242.75M+101.2K+3.8%307.6K8.94
Nov 29, 20242.65M+47.0K+1.8%368.6K7.19
Nov 15, 20242.60M+775.8K+42.5%638.6K4.08
Oct 31, 20241.83M+323.7K+21.5%372.2K4.91

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 FSS by settlement date
Settlement dateSharesPriceValue
Oct 9, 2026184$112.61$20.7K
Oct 8, 20262,852$114.41$326.3K
Oct 5, 2026251$116.34$29.2K
Sep 29, 2026631$115.01$72.6K
Sep 25, 2026614$112.78$69.2K
Sep 22, 202620$115.09$2.30K
Sep 18, 202613,352$113.78$1.52M
Aug 13, 20261,772$126.31$223.8K
Aug 12, 20263$128.72$386.16
Aug 11, 2026139$126.77$17.6K
Aug 6, 20261,267$130.18$164.9K
Aug 5, 20261,225$132.51$162.3K
Aug 4, 20261,854$129.12$239.4K
Aug 3, 2026987$124.95$123.3K
Jul 31, 202621$124.55$2.62K
Jul 30, 20265,806$111.86$649.5K
Jul 15, 2026275$118.33$32.5K
Jul 10, 20264,821$116.89$563.5K
Jun 30, 202612,265$126.69$1.55M
Jun 26, 2026621$126.97$78.8K
Jun 25, 20261,970$121.68$239.7K
May 29, 20262,937$113.33$332.9K
May 26, 2026105$112.61$11.8K
May 13, 20263,983$115.43$459.8K
May 6, 202613,860$121.51$1.68M
Apr 29, 202614$111.74$1.56K
Apr 21, 20261,045$115.28$120.5K
Apr 17, 20268$110.41$883.28
Apr 16, 20262$113.15$226.3
Mar 17, 20261,055$106.93$112.8K

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 FSS by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 13, 202663,2911,01699,96963.3%
Nov 12, 202671,819797118,46260.6%
Nov 11, 202636,947087,20342.4%
Nov 10, 202654,5080139,51439.1%
Nov 9, 202663,9380110,91357.6%
Nov 6, 202697,1340136,85371.0%
Nov 5, 2026167,933130265,82863.2%
Nov 4, 2026264,69815,084390,38767.8%
Nov 3, 202685,1901,328124,45668.4%
Nov 2, 2026114,3180180,37063.4%
Oct 30, 2026131,0210169,95377.1%
Oct 29, 2026368,8580495,89874.4%
Oct 28, 2026275,0460371,00074.1%
Oct 27, 202673,707092,96379.3%
Oct 26, 202664,9906111,14558.5%
Oct 23, 202665,004086,58675.1%
Oct 22, 2026130,9382,638170,87176.6%
Oct 21, 202695,9510175,72854.6%
Oct 20, 2026113,8700245,07146.5%
Oct 19, 202684,4453,770150,64956.1%
Oct 16, 202689,99315142,59563.1%
Oct 15, 2026119,41721236,40650.5%
Oct 14, 202692,89978143,82864.6%
Oct 13, 202680,1380257,52631.1%
Oct 12, 202651,82375083,84861.8%
Oct 9, 202653,58524880,86266.3%
Oct 8, 202669,8900145,01348.2%
Oct 7, 2026294,53620375,25778.5%
Oct 6, 202681,89253122,94566.6%
Oct 5, 2026113,43220148,96176.1%

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 FSS
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T2667,42723,362417,0815,57561.5%
Sep 28, 2026T2728,16622,371267,2745,19073.2%
Sep 21, 2026T2533,37519,725264,0495,07966.9%
Sep 14, 2026T2574,10019,828664,7565,84646.3%
Sep 7, 2026T2319,75714,208134,3693,44970.4%
Aug 31, 2026T2504,75419,265452,4095,01952.7%
Aug 24, 2026T2570,25720,037187,0294,42975.3%
Aug 17, 2026T2447,78118,604177,2764,26871.6%
Aug 10, 2026T2460,49518,828537,6214,32846.1%
Aug 3, 2026T2780,57223,375186,6745,40080.7%
Jul 27, 2026T2839,27132,213308,5545,99273.1%
Jul 20, 2026T2520,37020,267142,8673,89678.5%