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InterDigital, Inc.

IDCC
Exchange
Nasdaq
Industry
Patent Owners & Lessors
SEC CIK
0001405495

In the last 90 days, InterDigital, Inc. insiders filed 0 open-market purchases and 3 sales; 515 institutions reported holding it in 13F filings for Q2 2026, worth $7.72B in total; Fundsmith is the only superinvestor holding 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
2.68M
Shares, settlement Oct 30, 2026
Change
−46.0K
−1.7% vs. Oct 15, 2026
Days to cover
14.06
Short interest ÷ average daily volume
Average daily volume
190.8K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 3,654,829 sharesNov 15, 2024: 3,213,039 sharesNov 29, 2024: 2,779,983 sharesDec 13, 2024: 2,729,455 sharesDec 31, 2024: 2,277,946 sharesJan 15, 2025: 2,185,385 sharesJan 31, 2025: 2,072,918 sharesFeb 14, 2025: 2,100,102 sharesFeb 28, 2025: 2,183,611 sharesMar 14, 2025: 2,088,025 sharesMar 31, 2025: 2,038,227 sharesApr 15, 2025: 1,950,662 sharesApr 30, 2025: 1,870,310 sharesMay 15, 2025: 1,887,693 sharesMay 30, 2025: 1,876,255 sharesJun 13, 2025: 1,883,131 sharesJun 30, 2025: 1,972,368 sharesJul 15, 2025: 1,938,451 sharesJul 31, 2025: 1,902,524 sharesAug 15, 2025: 1,886,830 sharesAug 29, 2025: 1,904,580 sharesSep 15, 2025: 2,169,999 sharesSep 30, 2025: 2,166,926 sharesOct 15, 2025: 2,397,965 sharesOct 31, 2025: 2,389,648 sharesNov 14, 2025: 3,220,168 sharesNov 28, 2025: 2,952,650 sharesDec 15, 2025: 3,018,360 sharesDec 31, 2025: 3,113,299 sharesJan 15, 2026: 3,158,868 sharesJan 30, 2026: 2,986,855 sharesFeb 13, 2026: 3,028,181 sharesFeb 27, 2026: 3,049,425 sharesMar 13, 2026: 2,707,191 sharesMar 31, 2026: 2,369,384 sharesApr 15, 2026: 2,239,270 sharesApr 30, 2026: 2,339,716 sharesMay 15, 2026: 2,444,958 sharesMay 29, 2026: 2,527,278 sharesJun 15, 2026: 2,687,842 sharesJun 30, 2026: 2,854,282 sharesJul 15, 2026: 2,742,304 sharesJul 31, 2026: 2,674,308 sharesAug 14, 2026: 2,605,884 sharesAug 31, 2026: 2,739,629 sharesSep 15, 2026: 2,918,161 sharesSep 30, 2026: 2,824,358 sharesOct 15, 2026: 2,729,065 sharesOct 30, 2026: 2,683,076 shares
Short interest in IDCC by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 20262.68M−46.0K−1.7%190.8K14.06
Oct 15, 20262.73M−95.3K−3.4%165.9K16.45
Sep 30, 20262.82M−93.8K−3.2%217.2K13.01
Sep 15, 20262.92M+178.5K+6.5%203.9K14.31
Aug 31, 20262.74M+133.7K+5.1%176.9K15.49
Aug 14, 20262.61M−68.4K−2.6%217.8K11.96
Jul 31, 20262.67M−68.0K−2.5%278.9K9.59
Jul 15, 20262.74M−112.0K−3.9%252.2K10.87
Jun 30, 20262.85M+166.4K+6.2%505.7K5.64
Jun 15, 20262.69M+160.6K+6.4%415.4K6.47
May 29, 20262.53M+82.3K+3.4%296.9K8.51
May 15, 20262.44M+105.2K+4.5%440.9K5.54
Apr 30, 20262.34M+100.4K+4.5%288.5K8.11
Apr 15, 20262.24M−130.1K−5.5%286.1K7.83
Mar 31, 20262.37M−337.8K−12.5%842.3K2.81
Mar 13, 20262.71M−342.2K−11.2%220.1K12.30
Feb 27, 20263.05M+21.2K+0.7%258.4K11.80
Feb 13, 20263.03M+41.3K+1.4%352.6K8.59
Jan 30, 20262.99M−172.0K−5.5%252.3K11.84
Jan 15, 20263.16M+45.6K+1.5%287.5K10.99
Dec 31, 20253.11M+94.9K+3.2%258.6K12.04
Dec 15, 20253.02M+65.7K+2.2%253.8K11.89
Nov 28, 20252.95M−267.5K−8.3%291.4K10.13
Nov 14, 20253.22M+830.5K+34.8%327.2K9.84
Oct 31, 20252.39M−8.32K−0.4%344.5K6.94
Oct 15, 20252.40M+231.0K+10.7%400.6K5.99
Sep 30, 20252.17M−3.07K−0.1%485.7K4.46
Sep 15, 20252.17M+265.4K+13.9%329.8K6.58
Aug 29, 20251.90M+17.8K+0.9%274.8K6.93
Aug 15, 20251.89M−15.7K−0.8%245.7K7.68
Jul 31, 20251.90M−35.9K−1.9%323.9K5.87
Jul 15, 20251.94M−33.9K−1.7%214.1K9.05
Jun 30, 20251.97M+89.2K+4.7%260.5K7.57
Jun 13, 20251.88M+6.88K+0.4%240.2K7.84
May 30, 20251.88M−11.4K−0.6%208.7K8.99
May 15, 20251.89M+17.4K+0.9%365.8K5.16
Apr 30, 20251.87M−80.4K−4.1%297.5K6.29
Apr 15, 20251.95M−87.6K−4.3%403.0K4.84
Mar 31, 20252.04M−49.8K−2.4%424.2K4.80
Mar 14, 20252.09M−95.6K−4.4%371.5K5.62
Feb 28, 20252.18M+83.5K+4.0%319.8K6.83
Feb 14, 20252.10M+27.2K+1.3%498.3K4.21
Jan 31, 20252.07M−112.5K−5.2%317.0K6.54
Jan 15, 20252.19M−92.6K−4.1%400.7K5.45
Dec 31, 20242.28M−451.5K−16.5%363.2K6.27
Dec 13, 20242.73M−50.5K−1.8%362.0K7.54
Nov 29, 20242.78M−433.1K−13.5%277.0K10.04
Nov 15, 20243.21M−441.8K−12.1%442.6K7.26
Oct 31, 20243.65M−34.3K−0.9%395.1K9.25

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 IDCC by settlement date
Settlement dateSharesPriceValue
Oct 13, 2026768$328.14$252.0K
Oct 9, 2026328$328.30$107.7K
Sep 25, 202640$328.03$13.1K
Sep 15, 2026361$340.38$122.9K
Sep 10, 20264,759$339.34$1.61M
Sep 3, 2026122$329.79$40.2K
Aug 31, 20264$335.15$1.34K
Aug 20, 202685$344.86$29.3K
Aug 18, 202628$348.39$9.75K
Aug 12, 202621$338.07$7.10K
Aug 10, 202651$344.56$17.6K
Aug 4, 20262,494$309.23$771.2K
Aug 3, 20261,961$304.83$597.8K
Jul 31, 2026301$303.33$91.3K
Jul 27, 2026136$258.30$35.1K
Jul 22, 2026145$264.37$38.3K
Jul 20, 20262,260$260.45$588.6K
Jul 16, 2026926$270.21$250.2K
Jul 13, 20262,524$264.88$668.6K
Jul 9, 20266$267.76$1.61K
Jul 8, 202628,312$276.02$7.81M
Jul 6, 20268$281.40$2.25K
Jul 2, 202612,115$282.26$3.42M
Jul 1, 2026136$283.13$38.5K
Jun 30, 20261,595$277.07$441.9K
Jun 29, 202615,619$275.86$4.31M
Jun 23, 2026155$297.84$46.2K
Jun 22, 202659$296.04$17.5K
Jun 16, 2026892$288.87$257.7K
Jun 12, 2026366$276.66$101.3K

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 IDCC by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 10, 2026139,08349158,83387.6%
Nov 9, 2026112,9665157,47971.7%
Nov 6, 202676,761159113,14567.8%
Nov 5, 202646,788083,71855.9%
Nov 4, 202645,299084,46153.6%
Nov 3, 202634,949062,89255.6%
Nov 2, 202665,1216087,41074.5%
Oct 30, 202664,35414398,68365.2%
Oct 29, 202692,45426125,35373.8%
Oct 28, 202665,709700100,03865.7%
Oct 27, 202639,487056,19070.3%
Oct 26, 202636,950075,02849.2%
Oct 23, 202633,4291851,94564.4%
Oct 22, 202645,79937261,50074.5%
Oct 21, 202652,3793772,30172.4%
Oct 20, 202639,180067,09358.4%
Oct 19, 202635,229051,74868.1%
Oct 16, 202634,923557,92360.3%
Oct 15, 202629,408053,00555.5%
Oct 14, 202631,7799054,27158.6%
Oct 13, 202629,438241,55170.8%
Oct 12, 202641,771050,64382.5%
Oct 9, 202623,814835,11167.8%
Oct 8, 202633,763556,77359.5%
Oct 7, 202627,5712736,92674.7%
Oct 6, 202631,6701,87943,58272.7%
Oct 5, 202641,38845272,77756.9%
Oct 2, 202647,6266666,54771.6%
Oct 1, 202650,292065,29377.0%
Sep 30, 202629,587041,04472.1%

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 IDCC
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T2187,31914,919100,9295,79965.0%
Sep 28, 2026T2204,85915,536120,2425,70563.0%
Sep 21, 2026T2257,10316,430195,5046,02756.8%
Sep 14, 2026T2244,17519,066390,7067,10238.5%
Sep 7, 2026T2213,19618,23080,6815,66072.5%
Aug 31, 2026T2223,16019,121142,5135,90061.0%
Aug 24, 2026T2225,43519,369128,0595,75163.8%
Aug 17, 2026T2285,09823,306122,3065,31570.0%
Aug 10, 2026T2361,98527,244107,7535,91277.1%
Aug 3, 2026T2309,38124,962121,4447,64371.8%
Jul 27, 2026T2536,16028,700183,3186,76474.5%
Jul 20, 2026T2322,48922,26298,8745,26676.5%