greeksoup/ stock research
Stock research / United States / SPOK / Short interest

Spok Holdings, Inc. short interest

656K shares of Spok Holdings were sold short at the 15 October 2026 settlement, near the top of its range over the last year (251K to 691K). Short sellers would need 5.3 days of normal trading to buy them back.

Shares sold short656Kat 15 Oct 2026
Change on the settlement before-5.2%+109% over a year
Days to cover5.34at 123K shares a day
Of shares in issue3.13%shares short over shares outstanding
New to this? How to read this page
  1. Short interest is the number of shares investors have borrowed and sold, betting the price will fall, and not yet bought back.
  2. Days to cover is shares short over an average day's trading: how many days it would take short sellers to buy them all back. Above 5 or so is high.
  3. Rising short interest says more investors are betting against the stock. A crowded short can also rise fast if shorts rush to buy back.
  4. Brokers report it twice a month to FINRA, about ten days after each settlement date.
  5. What is short interest?

Short interest, days to cover and the price

Short interest is near the top of its range over the last year (251K to 691K), and the share price moved -25% over the last year.

Shares sold shortDays to coverShare price

Three charts on one timeline. Top: shares sold short at each settlement. Middle: days to cover, taller meaning shorts would need longer to buy back. Bottom: the share price, so you can see whether shorts added as the price fell or rose.

How it compares

every company on the site

    The bar ranks every company on the site from the lowest on the left to the highest on the right, in three equal thirds; the small figures under it are the values where each third starts, and the black tick is the middle company. The orange dot is this company; the grey ticks are the other companies in its industry (hover or tap for names). A hatched block is companies tied at none.

    Every settlement since 29 Dec 2017 as a table
    SettlementShares shortChangeAverage daily volumeDays to cover
    15 October 2026656K-5.2%123K5.34
    30 September 2026691K+1.7%133K5.21
    15 September 2026680K+14.4%118K5.75
    31 August 2026594K+1.2%180K3.30
    14 August 2026587K+1.6%175K3.35
    31 July 2026577K+3.0%141K4.09
    15 July 2026560K+15.7%147K3.82
    30 June 2026484K+5.5%242K2.00
    15 June 2026459K-14.2%137K3.34
    29 May 2026534K-3.3%173K3.10
    15 May 2026553K+13.3%198K2.80
    30 April 2026488K+7.2%150K3.25
    15 April 2026455K-12.5%155K2.94
    31 March 2026520K-2.4%176K2.96
    13 March 2026533K-7.7%184K2.89
    27 February 2026578K+26.3%266K2.17
    13 February 2026457K+6.8%149K3.06
    30 January 2026428K+30.4%167K2.56
    15 January 2026328K+22.6%159K2.06
    31 December 2025268K-15.4%167K1.60
    15 December 2025317K-8.3%161K1.96
    28 November 2025345K+37.3%189K1.83
    14 November 2025251K-14.6%167K1.51
    31 October 2025294K-6.0%166K1.77
    15 October 2025313K-0.8%122K2.56
    30 September 2025316K-2.2%84K3.78
    15 September 2025323K-1.2%112K2.88
    29 August 2025327K+22.6%142K2.31
    15 August 2025266K+66.7%194K1.37
    31 July 2025160K-3.6%98K1.62
    15 July 2025166K+2.2%112K1.47
    30 June 2025162K+23.6%132K1.23
    13 June 2025131K-2.9%81K1.62
    30 May 2025135K-4.6%121K1.12
    15 May 2025142K-49.0%170K1.00
    30 April 2025278K-5.3%187K1.49
    15 April 2025293K+4.5%161K1.82
    31 March 2025280K+7.3%102K2.74
    14 March 2025261K-10.4%185K1.41
    28 February 2025292K-8.0%133K2.19
    14 February 2025317K-1.9%76K4.15
    31 January 2025323K-6.6%91K3.57
    15 January 2025346K-1.6%78K4.45
    31 December 2024352K+18.7%112K3.13
    13 December 2024296K+17.1%90K3.28
    29 November 2024253K-30.8%97K2.61
    15 November 2024366K+28.3%145K2.52
    31 October 2024285K-3.2%91K3.13
    15 October 2024295K-14.2%102K2.88
    30 September 2024344K+4.1%115K2.99
    13 September 2024330K-23.9%91K3.63
    30 August 2024434K+20.6%129K3.37
    15 August 2024360K-27.3%126K2.87
    31 July 2024495K-10.8%139K3.57
    15 July 2024554K+36.1%94K5.92
    28 June 2024407K-7.3%122K3.33
    14 June 2024439K-3.7%117K3.76
    31 May 2024456K-10.1%135K3.38
    15 May 2024508K+5.3%179K2.84
    30 April 2024482K-4.4%109K4.42
    15 April 2024504K+16.7%132K3.81
    28 March 2024432K-34.3%166K2.60
    15 March 2024658K+27.6%186K3.53
    29 February 2024515K+12.6%221K2.33
    15 February 2024458K+9.2%123K3.72
    31 January 2024419K-28.8%119K3.53
    12 January 2024589K+5.9%108K5.45
    29 December 2023556K-1.0%146K3.82
    15 December 2023562K+19.3%330K1.70
    30 November 2023471K-33.9%225K2.09
    15 November 2023713K+61.7%157K4.54
    31 October 2023441K-31.4%142K3.11
    13 October 2023643K+53.4%143K4.50
    29 September 2023419K+5.7%260K1.61
    15 September 2023397K-33.6%213K1.87
    31 August 2023597K+41.6%172K3.48
    15 August 2023422K-10.0%235K1.79
    31 July 2023469K+0.2%297K1.58
    14 July 2023468K-10.4%293K1.59
    30 June 2023522K+53.7%437K1.20
    15 June 2023340K+5.5%136K2.50
    31 May 2023322K-10.0%257K1.26
    15 May 2023358K-4.8%238K1.51
    28 April 2023376K+84.4%194K1.94
    14 April 2023204K+14.7%366K1.00
    31 March 2023178K+40.3%143K1.24
    15 March 2023127K+67.9%397K1.00
    28 February 202376K-8.6%215K1.00
    15 February 202383K+141.6%160K1.00
    31 January 202334K-40.1%109K1.00
    13 January 202357K+31.6%108K1.00
    30 December 202243K-34.0%138K1.00
    15 December 202266K-60.9%229K1.00
    30 November 2022168K-72.1%150K1.12
    15 November 2022603K+51.9%381K1.58
    31 October 2022397K-19.6%127K3.14
    14 October 2022493K+33.4%75K6.57
    30 September 2022370K-13.4%215K1.72
    15 September 2022427K+18.5%92K4.65
    31 August 2022361K+8.9%90K3.99
    15 August 2022331K+11.1%164K2.02
    29 July 2022298K+0.9%144K2.07
    15 July 2022295K-11.5%45K6.51
    30 June 2022334K+3.3%159K2.10
    15 June 2022323K-2.6%84K3.84
    31 May 2022332K+19.3%99K3.33
    13 May 2022278K+10.2%129K2.16
    29 April 2022252K+0.5%140K1.80
    14 April 2022251K+4.5%111K2.27
    31 March 2022240K+95.8%78K3.07
    15 March 2022123K+9.6%92K1.33
    28 February 2022112K+12.6%229K1.00
    15 February 202299K-9.8%61K1.62
    31 January 2022110K+6.3%67K1.65
    14 January 2022104K+9.8%78K1.34
    31 December 202194K-40.0%102K1.00
    15 December 2021157K+41.8%99K1.60
    30 November 2021111K-0.3%70K1.58
    15 November 2021111K-47.9%147K1.00
    29 October 2021214K-4.7%73K2.94
    15 October 2021224K-64.8%141K1.59
    30 September 2021636K-4.2%126K5.04
    15 September 2021664K-4.6%258K2.58
    31 August 2021696K+238.6%543K1.28
    13 August 2021206K-76.5%816K1.00
    30 July 2021874K+1.0%300K2.91
    15 July 2021866K+207.3%169K5.12
    30 June 2021282K-61.4%429K1.00
    15 June 2021729K-4.5%125K5.85
    28 May 2021763K+43.8%266K2.87
    14 May 2021531K+59.2%139K3.82
    30 April 2021334K+25.9%70K4.77
    15 April 2021265K+13.9%69K3.86
    31 March 2021232K+38.5%82K2.84
    15 March 2021168K-46.9%93K1.80
    26 February 2021316K+9.6%79K4.00
    12 February 2021288K+23.8%51K5.63
    29 January 2021233K+5.9%57K4.12
    15 January 2021220K-8.8%82K2.70
    31 December 2020241K+3.3%107K2.26
    15 December 2020234K+24.6%102K2.30
    30 November 2020187K+91.3%58K3.24
    13 November 202098K-48.3%72K1.36
    30 October 2020189K+14.7%49K3.88
    15 October 2020165K-7.2%50K3.27
    30 September 2020178K+11.6%87K2.05
    15 September 2020159K+21.0%43K3.75
    31 August 2020132K+2.3%76K1.74
    14 August 2020129K-31.4%56K2.32
    31 July 2020188K+36.6%40K4.68
    15 July 2020137K+14.6%53K2.59
    30 June 2020120K+2.7%94K1.28
    15 June 2020117K-11.4%50K2.31
    29 May 2020132K+21.4%75K1.76
    15 May 2020108K-29.0%88K1.23
    30 April 2020153K+1.3%84K1.81
    15 April 2020151K+40.0%99K1.52
    31 March 2020108K-29.9%140K1.00
    13 March 2020154K+34.0%112K1.37
    28 February 2020115K-26.1%71K1.62
    14 February 2020155K-16.2%62K2.49
    31 January 2020185K-14.0%35K5.22
    15 January 2020215K-9.2%51K4.24
    31 December 2019237K-2.7%60K3.96
    13 December 2019244K+6.6%47K5.19
    29 November 2019229K+1.6%93K2.47
    15 November 2019225K-1.1%60K3.77
    31 October 2019228K-34.2%58K3.91
    15 October 2019346K-17.3%51K6.76
    30 September 2019418K-18.6%92K4.54
    13 September 2019514K-34.0%99K5.21
    30 August 2019779K-26.6%231K3.37
    15 August 20191.1M+109.1%230K4.62
    31 July 2019507K-17.2%118K4.31
    15 July 2019613K-11.0%58K10.57
    28 June 2019689K+18.9%119K5.80
    14 June 2019580K+3.2%85K6.80
    31 May 2019562K+132.9%244K2.31
    15 May 2019241K+11.6%119K2.02
    30 April 2019216K-15.2%75K2.86
    15 April 2019255K+41.4%65K3.90
    29 March 2019180K-12.1%89K2.03
    15 March 2019205K-44.8%141K1.45
    28 February 2019371K+7.8%197K1.88
    15 February 2019344K+22.2%59K5.86
    31 January 2019282K-1.0%59K4.76
    15 January 2019285K+54.8%70K4.04
    31 December 2018184K+11.5%125K1.47
    14 December 2018165K-40.4%125K1.32
    30 November 2018277K+87.9%138K2.01
    15 November 2018147K-39.1%58K2.55
    31 October 2018242K+18.0%84K2.87
    15 October 2018205K-12.7%77K2.67
    28 September 2018235K-22.7%136K1.73
    14 September 2018304K+3.8%70K4.35
    31 August 2018293K+24.9%90K3.27
    15 August 2018234K-9.0%125K1.87
    31 July 2018258K-2.5%118K2.18
    13 July 2018264K+9.5%65K4.04
    29 June 2018241K-22.6%117K2.06
    15 June 2018312K+11.1%133K2.35
    31 May 2018281K-7.4%102K2.74
    15 May 2018303K-9.4%107K2.82
    30 April 2018334K-7.2%103K3.26
    13 April 2018360K+36.9%111K3.25
    29 March 2018263K-36.1%245K1.08
    15 March 2018412K+68.7%148K2.78
    28 February 2018244K+4.0%128K1.91
    15 February 2018235K+42.9%68K3.46
    31 January 2018164K-23.0%60K2.72
    12 January 2018213K+6.3%68K3.12
    29 December 2017201K60K3.32
    Shares in millions (M) or thousands (K); hold the pointer on a figure for the exact count. FINRA publishes consolidated short interest twice a month, about ten days after each settlement.