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FTAI Infrastructure Inc.

FIP
Exchange
Nasdaq
Industry
Railroads, Line-Haul Operating
SEC CIK
0001899883

In the last 90 days, FTAI Infrastructure Inc. insiders filed 2 open-market purchases and 0 sales; 179 institutions reported holding it in 13F filings for Q2 2026, worth $482.6M 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
17.8M
Shares, settlement Oct 30, 2026
Change
−1.47M
−7.6% vs. Oct 15, 2026
Days to cover
13.00
Short interest ÷ average daily volume
Average daily volume
1.37M
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 6,472,793 sharesNov 15, 2024: 6,645,901 sharesNov 29, 2024: 6,263,296 sharesDec 13, 2024: 7,193,861 sharesDec 31, 2024: 8,063,987 sharesJan 15, 2025: 8,078,988 sharesJan 31, 2025: 8,706,749 sharesFeb 14, 2025: 9,943,098 sharesFeb 28, 2025: 12,533,178 sharesMar 14, 2025: 13,630,412 sharesMar 31, 2025: 14,511,204 sharesApr 15, 2025: 14,797,390 sharesApr 30, 2025: 14,466,604 sharesMay 15, 2025: 12,154,571 sharesMay 30, 2025: 12,941,897 sharesJun 13, 2025: 12,598,516 sharesJun 30, 2025: 12,265,891 sharesJul 15, 2025: 12,277,696 sharesJul 31, 2025: 12,594,830 sharesAug 15, 2025: 13,063,933 sharesAug 29, 2025: 12,667,944 sharesSep 15, 2025: 12,467,170 sharesSep 30, 2025: 13,169,009 sharesOct 15, 2025: 13,687,241 sharesOct 31, 2025: 14,678,185 sharesNov 14, 2025: 15,150,529 sharesNov 28, 2025: 15,881,200 sharesDec 15, 2025: 16,760,366 sharesDec 31, 2025: 15,557,669 sharesJan 15, 2026: 16,672,818 sharesJan 30, 2026: 15,652,105 sharesFeb 13, 2026: 15,755,646 sharesFeb 27, 2026: 16,002,200 sharesMar 13, 2026: 17,197,817 sharesMar 31, 2026: 16,782,145 sharesApr 15, 2026: 16,863,540 sharesApr 30, 2026: 16,813,519 sharesMay 15, 2026: 18,307,892 sharesMay 29, 2026: 18,068,058 sharesJun 15, 2026: 18,211,106 sharesJun 30, 2026: 18,246,890 sharesJul 15, 2026: 18,424,942 sharesJul 31, 2026: 18,703,821 sharesAug 14, 2026: 19,186,378 sharesAug 31, 2026: 19,269,103 sharesSep 15, 2026: 19,287,180 sharesSep 30, 2026: 18,609,898 sharesOct 15, 2026: 19,302,688 sharesOct 30, 2026: 17,829,552 shares
Short interest in FIP by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 202617.8M−1.47M−7.6%1.37M13.00
Oct 15, 202619.3M+692.8K+3.7%1.48M13.02
Sep 30, 202618.6M−677.3K−3.5%1.35M13.81
Sep 15, 202619.3M+18.1K+0.1%1.34M14.44
Aug 31, 202619.3M+82.7K+0.4%952.3K20.23
Aug 14, 202619.2M+482.6K+2.6%2.20M8.72
Jul 31, 202618.7M+278.9K+1.5%1.01M18.44
Jul 15, 202618.4M+178.1K+1.0%756.0K24.37
Jun 30, 202618.2M+35.8K+0.2%1.16M15.73
Jun 15, 202618.2M+143.0K+0.8%923.1K19.73
May 29, 202618.1M−239.8K−1.3%809.5K22.32
May 15, 202618.3M+1.49M+8.9%1.38M13.27
Apr 30, 202616.8M−50.0K−0.3%1.05M15.97
Apr 15, 202616.9M+81.4K+0.5%659.2K25.58
Mar 31, 202616.8M−415.7K−2.4%1.07M15.75
Mar 13, 202617.2M+1.20M+7.5%995.3K17.28
Feb 27, 202616.0M+246.6K+1.6%1.03M15.50
Feb 13, 202615.8M+103.5K+0.7%1.05M15.01
Jan 30, 202615.7M−1.02M−6.1%1.10M14.29
Jan 15, 202616.7M+1.12M+7.2%922.2K18.08
Dec 31, 202515.6M−1.20M−7.2%882.4K17.63
Dec 15, 202516.8M+879.2K+5.5%1.61M10.39
Nov 28, 202515.9M+730.7K+4.8%1.73M9.19
Nov 14, 202515.2M+472.3K+3.2%1.61M9.41
Oct 31, 202514.7M+990.9K+7.2%1.73M8.49
Oct 15, 202513.7M+518.2K+3.9%1.32M10.37
Sep 30, 202513.2M+701.8K+5.6%2.13M6.19
Sep 15, 202512.5M−200.8K−1.6%2.18M5.72
Aug 29, 202512.7M−396.0K−3.0%3.28M3.86
Aug 15, 202513.1M+469.1K+3.7%3.57M3.65
Jul 31, 202512.6M+317.1K+2.6%1.32M9.52
Jul 15, 202512.3M+11.8K+0.1%778.2K15.78
Jun 30, 202512.3M−332.6K−2.6%1.52M8.08
Jun 13, 202512.6M−343.4K−2.7%988.7K12.74
May 30, 202512.9M+787.3K+6.5%1.65M7.82
May 15, 202512.2M−2.31M−16.0%1.46M8.33
Apr 30, 202514.5M−330.8K−2.2%1.26M11.44
Apr 15, 202514.8M+286.2K+2.0%1.92M7.72
Mar 31, 202514.5M+880.8K+6.5%1.05M13.85
Mar 14, 202513.6M+1.10M+8.8%1.46M9.35
Feb 28, 202512.5M+2.59M+26.1%1.54M8.15
Feb 14, 20259.94M+1.24M+14.2%821.2K12.11
Jan 31, 20258.71M+627.8K+7.8%961.2K9.06
Jan 15, 20258.08M+15.0K+0.2%1.03M7.86
Dec 31, 20248.06M+870.1K+12.1%1.02M7.91
Dec 13, 20247.19M+930.6K+14.9%991.7K7.25
Nov 29, 20246.26M−382.6K−5.8%1.38M4.53
Nov 15, 20246.65M+173.1K+2.7%1.68M3.96
Oct 31, 20246.47M−436.7K−6.3%962.7K6.72

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 FIP by settlement date
Settlement dateSharesPriceValue
Oct 13, 20268,898$2.58$23.0K
Oct 8, 20263,821$2.84$10.9K
Sep 28, 20261,725$3.13$5.40K
Sep 17, 20262,136$2.87$6.13K
Sep 15, 202633,599$3.00$100.8K
Sep 14, 20262,850$3.31$9.43K
Sep 2, 20267,903$3.38$26.7K
Aug 28, 2026794$3.65$2.90K
Aug 25, 202612,710$3.75$47.7K
Aug 24, 202656,508$3.82$215.9K
Aug 21, 20264,407$3.73$16.4K
Aug 17, 20267$4.51$31.57
Aug 11, 20261,997$4.30$8.59K
Aug 7, 2026204$4.06$828.24
Jul 24, 20265,839$4.39$25.6K
Jul 23, 202621,135$4.50$95.1K
Jul 22, 20266,090$4.30$26.2K
Jul 17, 202633,562$4.22$141.6K
Jul 16, 202623,727$4.35$103.2K
Jul 10, 20263,892$4.47$17.4K
Jul 2, 20265,298$4.51$23.9K
Jun 30, 202651,890$4.36$226.2K
Jun 25, 202615,164$4.69$71.1K
Jun 15, 2026366$4.82$1.76K
Jun 11, 20267,245$4.28$31.0K
Jun 3, 2026357$4.48$1.60K
Jun 1, 2026329$4.46$1.47K
May 26, 2026770$4.51$3.47K
May 21, 20263,905$4.23$16.5K
May 19, 202654$4.30$232.2

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 FIP by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 12, 2026317,843677952,52433.4%
Nov 11, 2026232,5181,480527,91944.0%
Nov 10, 2026878,9014,5941,663,13052.8%
Nov 9, 2026222,9380807,47327.6%
Nov 6, 2026427,75580703,72460.8%
Nov 5, 2026790,8911,2001,098,07672.0%
Nov 4, 2026188,8550309,09661.1%
Nov 3, 2026329,5180627,30252.5%
Nov 2, 2026233,1460490,71147.5%
Oct 30, 2026250,8250434,13557.8%
Oct 29, 2026247,872975485,05951.1%
Oct 28, 2026128,1680187,61668.3%
Oct 27, 2026203,990300503,07440.5%
Oct 26, 2026175,0640334,53752.3%
Oct 23, 2026237,2380340,27769.7%
Oct 22, 2026304,7510554,58555.0%
Oct 21, 2026397,4381,486515,67177.1%
Oct 20, 2026210,0861500,13042.0%
Oct 19, 2026267,3841,322426,83862.6%
Oct 16, 2026361,8510696,12752.0%
Oct 15, 2026487,4940825,00959.1%
Oct 14, 2026391,49001,048,28037.3%
Oct 13, 2026167,177245635,15826.3%
Oct 12, 2026143,8590432,57733.3%
Oct 9, 2026202,783201369,18754.9%
Oct 8, 2026353,99121,003,88335.3%
Oct 7, 2026252,4214,111502,89650.2%
Oct 6, 2026194,8651292,42166.6%
Oct 5, 2026195,3024304,35664.2%
Oct 2, 2026217,608700369,01859.0%

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 FIP
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T21,204,74014,4201,307,0182,74648.0%
Sep 28, 2026T21,232,41815,3761,115,2465,47152.5%
Sep 21, 2026T2926,93114,910843,5053,48752.4%
Sep 14, 2026T21,891,92025,6071,409,7784,15457.3%
Sep 7, 2026T21,170,45019,726543,1992,21668.3%
Aug 31, 2026T21,051,61321,771557,5333,74965.4%
Aug 24, 2026T2916,78016,144614,1624,08559.9%
Aug 17, 2026T2887,45219,288367,4822,94170.7%
Aug 10, 2026T2884,36419,538717,5112,92655.2%
Aug 3, 2026T23,134,02333,8484,306,6857,00142.1%
Jul 27, 2026T21,332,32025,617752,3304,06263.9%
Jul 20, 2026T2789,02220,041613,0573,77356.3%