Skip to main content
Livermore
Livermore
US stocksTW
ZHEN

Factset Research Systems Inc

FDS
Exchange
NYSE
Industry
Services-Computer Programming, Data Processing, Etc.
SEC CIK
0001013237

No open-market purchases or sales by Factset Research Systems Inc insiders were filed in the last 90 days; 772 institutions reported holding it in 13F filings for Q2 2026, worth $9.22B in total; Markel Group 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
3.86M
Shares, settlement Oct 30, 2026
Change
+66.6K
+1.8% vs. Oct 15, 2026
Days to cover
5.66
Short interest ÷ average daily volume
Average daily volume
682.0K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 2,245,403 sharesNov 15, 2024: 2,088,394 sharesNov 29, 2024: 2,339,323 sharesDec 13, 2024: 2,163,447 sharesDec 31, 2024: 2,094,201 sharesJan 15, 2025: 2,014,852 sharesJan 31, 2025: 1,555,631 sharesFeb 14, 2025: 1,555,793 sharesFeb 28, 2025: 1,631,518 sharesMar 14, 2025: 1,407,780 sharesMar 31, 2025: 1,379,039 sharesApr 15, 2025: 1,432,664 sharesApr 30, 2025: 1,370,226 sharesMay 15, 2025: 1,431,328 sharesMay 30, 2025: 1,555,920 sharesJun 13, 2025: 1,363,274 sharesJun 30, 2025: 1,328,414 sharesJul 15, 2025: 1,567,024 sharesJul 31, 2025: 1,735,384 sharesAug 15, 2025: 2,099,876 sharesAug 29, 2025: 2,103,895 sharesSep 15, 2025: 1,746,189 sharesSep 30, 2025: 2,142,605 sharesOct 15, 2025: 2,335,894 sharesOct 31, 2025: 2,245,269 sharesNov 14, 2025: 2,648,595 sharesNov 28, 2025: 2,743,525 sharesDec 15, 2025: 1,785,631 sharesDec 31, 2025: 1,684,994 sharesJan 15, 2026: 1,801,249 sharesJan 30, 2026: 2,299,198 sharesFeb 13, 2026: 3,345,204 sharesFeb 27, 2026: 3,628,551 sharesMar 13, 2026: 3,364,054 sharesMar 31, 2026: 3,552,154 sharesApr 15, 2026: 4,778,159 sharesApr 30, 2026: 5,035,295 sharesMay 15, 2026: 5,759,069 sharesMay 29, 2026: 5,753,765 sharesJun 15, 2026: 5,362,886 sharesJun 30, 2026: 5,297,039 sharesJul 15, 2026: 5,024,927 sharesJul 31, 2026: 3,958,908 sharesAug 14, 2026: 3,594,250 sharesAug 31, 2026: 4,473,101 sharesSep 15, 2026: 3,844,515 sharesSep 30, 2026: 3,179,609 sharesOct 15, 2026: 3,794,022 sharesOct 30, 2026: 3,860,632 shares
Short interest in FDS by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 20263.86M+66.6K+1.8%682.0K5.66
Oct 15, 20263.79M+614.4K+19.3%726.5K5.22
Sep 30, 20263.18M−664.9K−17.3%812.5K3.91
Sep 15, 20263.84M−628.6K−14.1%972.4K3.95
Aug 31, 20264.47M+878.9K+24.5%847.5K5.28
Aug 14, 20263.59M−364.7K−9.2%749.9K4.79
Jul 31, 20263.96M−1.07M−21.2%1.02M3.88
Jul 15, 20265.02M−272.1K−5.1%989.8K5.08
Jun 30, 20265.30M−65.8K−1.2%1.06M5.00
Jun 15, 20265.36M−390.9K−6.8%1.01M5.32
May 29, 20265.75M−5.30K−0.1%803.3K7.16
May 15, 20265.76M+723.8K+14.4%926.6K6.22
Apr 30, 20265.04M+257.1K+5.4%773.9K6.51
Apr 15, 20264.78M+1.23M+34.5%1.14M4.19
Mar 31, 20263.55M+188.1K+5.6%1.08M3.28
Mar 13, 20263.36M−264.5K−7.3%881.8K3.82
Feb 27, 20263.63M+283.3K+8.5%1.18M3.08
Feb 13, 20263.35M+1.05M+45.5%1.59M2.10
Jan 30, 20262.30M+497.9K+27.6%683.3K3.36
Jan 15, 20261.80M+116.3K+6.9%512.4K3.52
Dec 31, 20251.68M−100.6K−5.6%831.1K2.03
Dec 15, 20251.79M−957.9K−34.9%743.9K2.40
Nov 28, 20252.74M+94.9K+3.6%1.05M2.61
Nov 14, 20252.65M+403.3K+18.0%806.5K3.28
Oct 31, 20252.25M−90.6K−3.9%863.3K2.60
Oct 15, 20252.34M+193.3K+9.0%800.9K2.92
Sep 30, 20252.14M+396.4K+22.7%1.09M1.96
Sep 15, 20251.75M−357.7K−17.0%453.8K3.85
Aug 29, 20252.10M+4.02K+0.2%455.2K4.62
Aug 15, 20252.10M+364.5K+21.0%409.3K5.13
Jul 31, 20251.74M+168.4K+10.7%356.1K4.87
Jul 15, 20251.57M+238.6K+18.0%263.0K5.96
Jun 30, 20251.33M−34.9K−2.6%494.8K2.68
Jun 13, 20251.36M−192.6K−12.4%370.1K3.68
May 30, 20251.56M+124.6K+8.7%328.8K4.73
May 15, 20251.43M+61.1K+4.5%309.3K4.63
Apr 30, 20251.37M−62.4K−4.4%223.2K6.14
Apr 15, 20251.43M+53.6K+3.9%390.6K3.67
Mar 31, 20251.38M−28.7K−2.0%370.9K3.72
Mar 14, 20251.41M−223.7K−13.7%270.1K5.21
Feb 28, 20251.63M+75.7K+4.9%206.6K7.90
Feb 14, 20251.56M+1620.0%231.5K6.72
Jan 31, 20251.56M−459.2K−22.8%388.0K4.01
Jan 15, 20252.01M−79.3K−3.8%296.1K6.80
Dec 31, 20242.09M−69.2K−3.2%366.9K5.71
Dec 13, 20242.16M−175.9K−7.5%211.5K10.23
Nov 29, 20242.34M+250.9K+12.0%232.2K10.08
Nov 15, 20242.09M−157.0K−7.0%294.1K7.10
Oct 31, 20242.25M−93.5K−4.0%214.2K10.48

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 FDS by settlement date
Settlement dateSharesPriceValue
Oct 13, 202662$288.67$17.9K
Oct 9, 20261,424$286.52$408.0K
Oct 5, 20264$266.00$1.06K
Oct 2, 202634,314$277.61$9.53M
Oct 1, 202634,746$269.95$9.38M
Sep 30, 202638,594$259.97$10.0M
Sep 22, 202610,151$284.10$2.88M
Sep 21, 20262,166$283.83$614.8K
Sep 16, 2026101$277.09$28.0K
Sep 14, 202613$259.71$3.38K
Sep 10, 20261$279.17$279.17
Sep 4, 2026139$312.96$43.5K
Sep 1, 2026102$313.55$32.0K
Aug 31, 2026202$308.98$62.4K
Aug 28, 2026261$304.47$79.5K
Aug 24, 2026469$299.91$140.7K
Aug 21, 2026442$300.06$132.6K
Jul 29, 2026172$283.87$48.8K
Jul 28, 2026244,291$265.90$65.0M
Jul 24, 20266$243.96$1.46K
Jul 20, 2026305$258.09$78.7K
Jul 14, 2026121$263.11$31.8K
Jul 2, 20263,534$245.55$867.8K
Jul 1, 2026275$230.08$63.3K
Jun 30, 20263,862$233.62$902.2K
Jun 29, 202611$231.74$2.55K
Jun 25, 2026186$216.45$40.3K
Jun 24, 2026785$218.15$171.2K
Jun 23, 202614$218.62$3.06K
Jun 22, 2026100$221.29$22.1K

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 FDS by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 11, 2026160,5400204,16578.6%
Nov 10, 2026209,5800290,64372.1%
Nov 9, 2026116,62222196,67359.3%
Nov 6, 2026105,840363209,89850.4%
Nov 5, 2026122,66712261,41946.9%
Nov 4, 2026182,1306324,68656.1%
Nov 3, 2026208,1290354,75758.7%
Nov 2, 2026231,52310340,99067.9%
Oct 30, 2026184,493652300,36861.4%
Oct 29, 2026149,3558200,78574.4%
Oct 28, 2026116,64158192,78160.5%
Oct 27, 2026179,4040305,50758.7%
Oct 26, 2026125,4200265,19147.3%
Oct 23, 2026140,3200236,70259.3%
Oct 22, 2026248,1924,372381,96165.0%
Oct 21, 2026130,01312194,30266.9%
Oct 20, 2026213,4201297,49871.7%
Oct 19, 2026111,5478194,25057.4%
Oct 16, 2026160,8120218,40273.6%
Oct 15, 2026194,0650323,08560.1%
Oct 14, 2026150,5240209,15172.0%
Oct 13, 2026124,0960187,32866.2%
Oct 12, 2026147,9656209,47670.6%
Oct 9, 2026187,5450315,11259.5%
Oct 8, 2026241,31233349,80069.0%
Oct 7, 2026235,93710291,20381.0%
Oct 6, 2026143,5360235,09261.1%
Oct 5, 2026164,540126227,01672.5%
Oct 2, 2026139,8673231,29360.5%
Oct 1, 2026424,989328594,48371.5%

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 FDS
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 19, 2026T1983,66735,335363,30115,24773.0%
Oct 12, 2026T1936,35037,652324,44811,19174.3%
Oct 5, 2026T11,149,85439,114457,96813,48171.5%
Sep 28, 2026T11,603,73453,342664,21318,01570.7%
Sep 21, 2026T1827,45334,381389,15213,46168.0%
Sep 14, 2026T11,298,65345,322606,21513,71868.2%
Sep 7, 2026T11,425,70146,8111,315,33810,89152.0%
Aug 31, 2026T11,032,00235,053778,45513,16157.0%
Aug 24, 2026T11,124,17735,2691,873,0589,26437.5%
Aug 17, 2026T1885,79936,983738,86311,77554.5%
Aug 10, 2026T1957,75236,909815,09210,93754.0%
Aug 3, 2026T11,167,42940,778655,74012,75064.0%