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Gibraltar Industries, Inc.

ROCK
Exchange
Nasdaq
Industry
Steel Works, Blast Furnaces & Rolling & Finishing Mills
SEC CIK
0000912562

No open-market purchases or sales by Gibraltar Industries, Inc. insiders were filed in the last 90 days; 245 institutions reported holding it in 13F filings for Q2 2026, worth $1.39B 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
1.94M
Shares, settlement Oct 30, 2026
Change
−28.8K
−1.5% vs. Oct 15, 2026
Days to cover
5.42
Short interest ÷ average daily volume
Average daily volume
358.4K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 497,279 sharesNov 15, 2024: 456,575 sharesNov 29, 2024: 408,779 sharesDec 13, 2024: 408,961 sharesDec 31, 2024: 295,349 sharesJan 15, 2025: 323,170 sharesJan 31, 2025: 285,397 sharesFeb 14, 2025: 276,221 sharesFeb 28, 2025: 389,436 sharesMar 14, 2025: 533,416 sharesMar 31, 2025: 490,587 sharesApr 15, 2025: 544,571 sharesApr 30, 2025: 587,422 sharesMay 15, 2025: 575,569 sharesMay 30, 2025: 617,758 sharesJun 13, 2025: 673,222 sharesJun 30, 2025: 498,740 sharesJul 15, 2025: 484,335 sharesJul 31, 2025: 437,842 sharesAug 15, 2025: 525,387 sharesAug 29, 2025: 526,678 sharesSep 15, 2025: 530,010 sharesSep 30, 2025: 628,239 sharesOct 15, 2025: 655,940 sharesOct 31, 2025: 789,052 sharesNov 14, 2025: 805,083 sharesNov 28, 2025: 720,826 sharesDec 15, 2025: 615,638 sharesDec 31, 2025: 484,038 sharesJan 15, 2026: 440,144 sharesJan 30, 2026: 544,568 sharesFeb 13, 2026: 656,388 sharesFeb 27, 2026: 644,042 sharesMar 13, 2026: 1,149,362 sharesMar 31, 2026: 1,016,546 sharesApr 15, 2026: 1,022,037 sharesApr 30, 2026: 1,196,960 sharesMay 15, 2026: 1,225,160 sharesMay 29, 2026: 1,316,333 sharesJun 15, 2026: 1,317,737 sharesJun 30, 2026: 1,267,509 sharesJul 15, 2026: 1,374,431 sharesJul 31, 2026: 1,412,139 sharesAug 14, 2026: 1,442,451 sharesAug 31, 2026: 1,671,883 sharesSep 15, 2026: 1,931,895 sharesSep 30, 2026: 2,086,193 sharesOct 15, 2026: 1,969,511 sharesOct 30, 2026: 1,940,692 shares
Short interest in ROCK by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 20261.94M−28.8K−1.5%358.4K5.42
Oct 15, 20261.97M−116.7K−5.6%410.5K4.80
Sep 30, 20262.09M+154.3K+8.0%423.6K4.93
Sep 15, 20261.93M+260.0K+15.6%277.5K6.96
Aug 31, 20261.67M+229.4K+15.9%191.8K8.72
Aug 14, 20261.44M+30.3K+2.2%370.9K3.89
Jul 31, 20261.41M+37.7K+2.7%349.7K4.04
Jul 15, 20261.37M+106.9K+8.4%278.7K4.93
Jun 30, 20261.27M−50.2K−3.8%447.6K2.83
Jun 15, 20261.32M+1.40K+0.1%334.9K3.93
May 29, 20261.32M+91.2K+7.4%387.8K3.39
May 15, 20261.23M+28.2K+2.4%405.1K3.02
Apr 30, 20261.20M+174.9K+17.1%331.7K3.61
Apr 15, 20261.02M+5.49K+0.5%295.0K3.46
Mar 31, 20261.02M−132.8K−11.6%364.5K2.79
Mar 13, 20261.15M+505.3K+78.5%408.5K2.81
Feb 27, 2026644.0K−12.3K−1.9%223.9K2.88
Feb 13, 2026656.4K+111.8K+20.5%225.7K2.91
Jan 30, 2026544.6K+104.4K+23.7%544.2K1.00
Jan 15, 2026440.1K−43.9K−9.1%283.6K1.55
Dec 31, 2025484.0K−131.6K−21.4%283.4K1.71
Dec 15, 2025615.6K−105.2K−14.6%261.1K2.36
Nov 28, 2025720.8K−84.3K−10.5%579.5K1.24
Nov 14, 2025805.1K+16.0K+2.0%252.9K3.18
Oct 31, 2025789.1K+133.1K+20.3%384.2K2.05
Oct 15, 2025655.9K+27.7K+4.4%364.6K1.80
Sep 30, 2025628.2K+98.2K+18.5%278.1K2.26
Sep 15, 2025530.0K+3.33K+0.6%188.6K2.81
Aug 29, 2025526.7K+1.29K+0.3%201.3K2.62
Aug 15, 2025525.4K+87.5K+20.0%290.2K1.81
Jul 31, 2025437.8K−46.5K−9.6%205.4K2.13
Jul 15, 2025484.3K−14.4K−2.9%195.1K2.48
Jun 30, 2025498.7K−174.5K−25.9%295.6K1.69
Jun 13, 2025673.2K+55.5K+9.0%171.6K3.92
May 30, 2025617.8K+42.2K+7.3%368.4K1.68
May 15, 2025575.6K−11.9K−2.0%273.8K2.10
Apr 30, 2025587.4K+42.9K+7.9%245.5K2.39
Apr 15, 2025544.6K+54.0K+11.0%331.7K1.64
Mar 31, 2025490.6K−42.8K−8.0%358.2K1.37
Mar 14, 2025533.4K+144.0K+37.0%353.6K1.51
Feb 28, 2025389.4K+113.2K+41.0%390.7K1.00
Feb 14, 2025276.2K−9.18K−3.2%150.8K1.83
Jan 31, 2025285.4K−37.8K−11.7%186.1K1.53
Jan 15, 2025323.2K+27.8K+9.4%177.0K1.83
Dec 31, 2024295.3K−113.6K−27.8%333.4K1.00
Dec 13, 2024409.0K+1820.0%130.7K3.13
Nov 29, 2024408.8K−47.8K−10.5%173.5K2.36
Nov 15, 2024456.6K−40.7K−8.2%175.6K2.60
Oct 31, 2024497.3K+95.1K+23.6%157.3K3.16

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 ROCK by settlement date
Settlement dateSharesPriceValue
Oct 9, 2026465$37.48$17.4K
Oct 7, 2026370$40.80$15.1K
Sep 23, 20262$42.60$85.2
Sep 18, 20264,364$43.93$191.7K
Sep 14, 202615$46.16$692.4
Sep 11, 2026195$44.52$8.68K
Sep 4, 2026325$45.77$14.9K
Sep 3, 2026121$44.24$5.35K
Sep 2, 20262,185$42.86$93.6K
Aug 18, 202680$47.53$3.80K
Aug 11, 20267$48.86$342.02
Aug 7, 202619$50.78$964.82
Aug 6, 2026422$54.86$23.2K
Jul 31, 20261,014$42.87$43.5K
Jul 16, 202647$44.21$2.08K
Jul 15, 2026715$41.60$29.7K
Jul 2, 202642$45.31$1.90K
Jun 17, 20265$41.47$207.35
Jun 9, 20261,173$38.39$45.0K
May 19, 202676$35.55$2.70K
May 11, 2026231$40.81$9.43K
May 5, 2026355$36.92$13.1K
Apr 27, 202611,374$39.57$450.1K
Apr 14, 202696$41.55$3.99K
Mar 27, 2026603$40.92$24.7K
Mar 19, 2026794$39.83$31.6K
Mar 9, 2026116$40.23$4.67K
Feb 20, 20261,587$53.15$84.3K
Feb 19, 20265$52.89$264.45
Feb 5, 2026834$53.08$44.3K

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 ROCK by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 10, 2026156,5710252,55862.0%
Nov 9, 2026139,9640242,77657.7%
Nov 6, 2026310,4454,978625,43749.6%
Nov 5, 2026415,78213,6331,038,48540.0%
Nov 4, 202669,0890183,27737.7%
Nov 3, 202650,2880103,78748.5%
Nov 2, 202664,9090139,56846.5%
Oct 30, 202661,273093,04965.9%
Oct 29, 202652,028094,66555.0%
Oct 28, 202653,8100117,15745.9%
Oct 27, 202646,88819785,18655.0%
Oct 26, 202668,748098,21370.0%
Oct 23, 202679,7540105,49075.6%
Oct 22, 202677,0890144,95353.2%
Oct 21, 2026103,7680154,48567.2%
Oct 20, 2026117,7500145,26281.1%
Oct 19, 2026160,4590208,29577.0%
Oct 16, 2026119,6410165,27372.4%
Oct 15, 2026149,4270411,71036.3%
Oct 14, 202694,1850169,03655.7%
Oct 13, 202682,7260160,79251.4%
Oct 12, 202679,6440146,30254.4%
Oct 9, 2026102,8840163,28463.0%
Oct 8, 2026152,9390272,41056.1%
Oct 7, 202694,2460122,90776.7%
Oct 6, 202641,575066,10462.9%
Oct 5, 202665,7280111,91158.7%
Oct 2, 202657,368091,10563.0%
Oct 1, 202665,3030146,21844.7%
Sep 30, 202657,579087,13166.1%

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 ROCK
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T2547,75815,482238,4354,28069.7%
Sep 28, 2026T2372,05018,854182,2643,25567.1%
Sep 21, 2026T2581,46321,325239,8883,80870.8%
Sep 14, 2026T2618,70617,637227,4103,07473.1%
Sep 7, 2026T2390,80416,617118,6662,39676.7%
Aug 31, 2026T2405,10015,406138,6473,06874.5%
Aug 24, 2026T2226,66713,189139,5492,46361.9%
Aug 17, 2026T2261,64516,362148,1072,65663.9%
Aug 10, 2026T2582,05718,170101,6093,28585.1%
Aug 3, 2026T2690,92026,116233,8093,91274.7%
Jul 27, 2026T2497,24221,020322,7624,04360.6%
Jul 20, 2026T2356,91916,653169,7372,52267.8%