Skip to main content
Livermore
Livermore
US stocksTW
ZHEN

Seagate Technology Holdings plc

STX
Exchange
Nasdaq
Industry
Computer Storage Devices
SEC CIK
0001137789

In the last 90 days, Seagate Technology Holdings plc insiders filed 0 open-market purchases and 30 sales; 1,983 institutions reported holding it in 13F filings for Q2 2026, worth $181.1B in total; 5 superinvestors hold it, including Lone Pine Capital and Tiger Global Management.

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
8.44M
Shares, settlement Oct 30, 2026
Change
+580.9K
+7.4% vs. Oct 15, 2026
Days to cover
1.44
Short interest ÷ average daily volume
Average daily volume
5.86M
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 11,610,387 sharesNov 15, 2024: 11,540,418 sharesNov 29, 2024: 11,622,697 sharesDec 13, 2024: 13,057,990 sharesDec 31, 2024: 12,438,886 sharesJan 15, 2025: 12,095,890 sharesJan 31, 2025: 13,505,693 sharesFeb 14, 2025: 16,079,766 sharesFeb 28, 2025: 18,732,526 sharesMar 14, 2025: 18,781,543 sharesMar 31, 2025: 18,650,685 sharesApr 15, 2025: 17,177,248 sharesApr 30, 2025: 18,855,185 sharesMay 15, 2025: 17,658,388 sharesMay 30, 2025: 16,238,529 sharesJun 13, 2025: 17,703,594 sharesJun 30, 2025: 18,474,529 sharesJul 15, 2025: 18,739,773 sharesJul 31, 2025: 18,082,272 sharesAug 15, 2025: 16,797,163 sharesAug 29, 2025: 18,048,597 sharesSep 15, 2025: 16,900,916 sharesSep 30, 2025: 16,697,919 sharesOct 15, 2025: 15,035,955 sharesOct 31, 2025: 14,703,473 sharesNov 14, 2025: 13,266,821 sharesNov 28, 2025: 12,674,467 sharesDec 15, 2025: 13,574,640 sharesDec 31, 2025: 13,123,509 sharesJan 15, 2026: 12,489,185 sharesJan 30, 2026: 11,057,152 sharesFeb 13, 2026: 12,210,944 sharesFeb 27, 2026: 9,846,971 sharesMar 13, 2026: 9,878,452 sharesMar 31, 2026: 9,144,048 sharesApr 15, 2026: 8,441,958 sharesApr 30, 2026: 8,618,343 sharesMay 15, 2026: 9,303,817 sharesMay 29, 2026: 9,050,053 sharesJun 15, 2026: 8,446,780 sharesJun 30, 2026: 6,584,569 sharesJul 15, 2026: 7,342,100 sharesJul 31, 2026: 8,047,106 sharesAug 14, 2026: 8,161,824 sharesAug 31, 2026: 8,482,797 sharesSep 15, 2026: 9,129,029 sharesSep 30, 2026: 6,972,672 sharesOct 15, 2026: 7,859,241 sharesOct 30, 2026: 8,440,115 shares
Short interest in STX by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 20268.44M+580.9K+7.4%5.86M1.44
Oct 15, 20267.86M+886.6K+12.7%5.65M1.39
Sep 30, 20266.97M−2.16M−23.6%3.90M1.79
Sep 15, 20269.13M+646.2K+7.6%3.42M2.67
Aug 31, 20268.48M+321.0K+3.9%3.59M2.36
Aug 14, 20268.16M+114.7K+1.4%4.73M1.72
Jul 31, 20268.05M+705.0K+9.6%6.19M1.30
Jul 15, 20267.34M+757.5K+11.5%4.32M1.70
Jun 30, 20266.58M−1.86M−22.1%5.87M1.12
Jun 15, 20268.45M−603.3K−6.7%3.20M2.64
May 29, 20269.05M−253.8K−2.7%3.46M2.61
May 15, 20269.30M+685.5K+8.0%4.74M1.96
Apr 30, 20268.62M+176.4K+2.1%4.34M1.98
Apr 15, 20268.44M−702.1K−7.7%3.70M2.28
Mar 31, 20269.14M−734.4K−7.4%3.98M2.30
Mar 13, 20269.88M+31.5K+0.3%3.24M3.05
Feb 27, 20269.85M−2.36M−19.4%2.80M3.52
Feb 13, 202612.2M+1.15M+10.4%4.63M2.64
Jan 30, 202611.1M−1.43M−11.5%6.20M1.78
Jan 15, 202612.5M−634.3K−4.8%3.59M3.48
Dec 31, 202513.1M−451.1K−3.3%4.49M2.92
Dec 15, 202513.6M+900.2K+7.1%3.16M4.30
Nov 28, 202512.7M−592.4K−4.5%3.00M4.22
Nov 14, 202513.3M−1.44M−9.8%4.74M2.80
Oct 31, 202514.7M−332.5K−2.2%5.14M2.86
Oct 15, 202515.0M−1.66M−10.0%5.55M2.71
Sep 30, 202516.7M−203.0K−1.2%4.20M3.97
Sep 15, 202516.9M−1.15M−6.4%4.18M4.04
Aug 29, 202518.0M+1.25M+7.5%2.51M7.20
Aug 15, 202516.8M−1.29M−7.1%2.68M6.27
Jul 31, 202518.1M−657.5K−3.5%4.54M3.98
Jul 15, 202518.7M+265.2K+1.4%4.30M4.36
Jun 30, 202518.5M+770.9K+4.4%3.92M4.71
Jun 13, 202517.7M+1.47M+9.0%4.44M3.99
May 30, 202516.2M−1.42M−8.0%4.36M3.72
May 15, 202517.7M−1.20M−6.4%3.80M4.65
Apr 30, 202518.9M+1.68M+9.8%4.82M3.91
Apr 15, 202517.2M−1.47M−7.9%5.99M2.87
Mar 31, 202518.7M−130.9K−0.7%2.51M7.44
Mar 14, 202518.8M+49.0K+0.3%4.06M4.62
Feb 28, 202518.7M+2.65M+16.5%2.92M6.42
Feb 14, 202516.1M+2.57M+19.1%2.52M6.39
Jan 31, 202513.5M+1.41M+11.7%4.47M3.02
Jan 15, 202512.1M−343.0K−2.8%2.68M4.51
Dec 31, 202412.4M−619.1K−4.7%2.61M4.77
Dec 13, 202413.1M+1.44M+12.4%3.05M4.29
Nov 29, 202411.6M+82.3K+0.7%2.10M5.52
Nov 15, 202411.5M−70.0K−0.6%1.81M6.36
Oct 31, 202411.6M+700.2K+6.4%2.86M4.06

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 STX by settlement date
Settlement dateSharesPriceValue
Oct 9, 2026393$774.83$304.5K
Oct 6, 202656$887.09$49.7K
Sep 30, 20263$913.45$2.74K
Sep 28, 20264$916.83$3.67K
Sep 25, 20262$905.92$1.81K
Sep 23, 2026618$919.84$568.5K
Sep 21, 2026301$858.79$258.5K
Sep 18, 202611$803.13$8.83K
Sep 9, 2026188$904.38$170.0K
Sep 8, 202647$849.28$39.9K
Sep 1, 2026347$828.38$287.4K
Aug 31, 202684$829.76$69.7K
Aug 26, 2026140$821.67$115.0K
Aug 17, 2026507$973.44$493.5K
Aug 12, 2026860$820.52$705.6K
Aug 11, 20261,826$800.99$1.46M
Aug 7, 2026227$852.95$193.6K
Aug 3, 2026253$856.13$216.6K
Jul 29, 20261$747.30$747.3
Jul 20, 20262,038$787.66$1.61M
Jul 17, 2026116$745.49$86.5K
Jul 16, 202656$828.30$46.4K
Jul 13, 2026542$910.34$493.4K
Jul 9, 20264,700$860.02$4.04M
Jul 8, 2026276$827.64$228.4K
Jul 6, 202620$820.16$16.4K
Jun 29, 2026100$899.90$90.0K
Jun 25, 2026600$993.25$596.0K
Jun 22, 20263,852$1,070.23$4.12M
Jun 15, 20262,011$931.04$1.87M

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 STX by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 10, 20261,582,902852,798,63956.6%
Nov 9, 20261,488,9411,1703,289,50545.3%
Nov 6, 20261,157,08740,1053,758,89830.8%
Nov 5, 2026815,47250,6154,236,39419.2%
Nov 4, 20261,420,5364,3323,827,33137.1%
Nov 3, 2026738,5092,3752,295,93932.2%
Nov 2, 2026781,598183,1342,690,39829.1%
Oct 30, 2026942,98057,9752,700,19134.9%
Oct 29, 20261,394,7363,3282,792,25650.0%
Oct 28, 20263,249,7182,8845,735,83156.7%
Oct 27, 20261,901,5519923,752,54350.7%
Oct 26, 20261,121,7564,5982,557,27843.9%
Oct 23, 20261,356,3645,9393,163,57642.9%
Oct 22, 20261,015,9781,1953,287,27730.9%
Oct 21, 20261,125,0352,9242,468,25745.6%
Oct 20, 2026970,6421,4202,497,65338.9%
Oct 19, 2026730,8051,0412,373,34330.8%
Oct 16, 2026963,8743,2093,430,93628.1%
Oct 15, 2026977,2242,6893,337,79229.3%
Oct 14, 2026970,9654,9342,670,92336.4%
Oct 13, 20261,262,2724,1413,882,85832.5%
Oct 12, 2026772,1001,5712,322,56433.2%
Oct 9, 2026951,0771,9372,389,00639.8%
Oct 8, 2026945,4772,1072,597,14236.4%
Oct 7, 20261,192,0668712,269,08352.5%
Oct 6, 20261,830,4781,1933,580,43351.1%
Oct 5, 2026993,791129,2912,361,92042.1%
Oct 2, 20263,159,687336,7035,807,74754.4%
Oct 1, 2026657,1592,0531,314,62450.0%
Sep 30, 2026536,7376601,462,52736.7%

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 STX
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 19, 2026T14,855,781142,8699,723,236183,31433.3%
Oct 12, 2026T15,807,204174,39010,446,223226,96635.7%
Oct 5, 2026T15,656,608182,5358,877,916292,67938.9%
Sep 28, 2026T14,828,633145,1228,596,558239,04736.0%
Sep 21, 2026T13,121,443104,7757,346,586148,31229.8%
Sep 14, 2026T13,506,912127,0958,626,970158,35628.9%
Sep 7, 2026T13,003,345101,3476,680,208136,05031.0%
Aug 31, 2026T12,878,888103,3784,842,224133,02437.3%
Aug 24, 2026T13,014,190113,9436,142,031122,59832.9%
Aug 17, 2026T14,046,231149,3968,744,811210,35331.6%
Aug 10, 2026T14,118,376145,47610,303,286200,37928.6%
Aug 3, 2026T15,458,740167,49210,915,656215,41233.3%