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Archer Aviation Inc.

ACHR
Exchange
NYSE
Industry
Aircraft
SEC CIK
0001824502

In the last 90 days, Archer Aviation Inc. insiders filed 0 open-market purchases and 6 sales; 530 institutions reported holding it in 13F filings for Q2 2026, worth $1.83B in total; ARK Invest 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
113.0M
Shares, settlement Oct 30, 2026
Change
−1.85M
−1.6% vs. Oct 15, 2026
Days to cover
5.91
Short interest ÷ average daily volume
Average daily volume
19.1M
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 60,759,546 sharesNov 15, 2024: 76,611,575 sharesNov 29, 2024: 71,435,388 sharesDec 13, 2024: 73,584,626 sharesDec 31, 2024: 72,264,089 sharesJan 15, 2025: 57,736,471 sharesJan 31, 2025: 47,054,398 sharesFeb 14, 2025: 48,727,615 sharesFeb 28, 2025: 53,637,616 sharesMar 14, 2025: 54,856,548 sharesMar 31, 2025: 61,758,303 sharesApr 15, 2025: 63,409,364 sharesApr 30, 2025: 62,889,568 sharesMay 15, 2025: 64,263,448 sharesMay 30, 2025: 63,437,924 sharesJun 13, 2025: 65,913,628 sharesJun 30, 2025: 94,757,131 sharesJul 15, 2025: 88,326,406 sharesJul 31, 2025: 83,285,166 sharesAug 15, 2025: 95,751,866 sharesAug 29, 2025: 92,770,658 sharesSep 15, 2025: 101,406,970 sharesSep 30, 2025: 94,942,500 sharesOct 15, 2025: 75,556,005 sharesOct 31, 2025: 80,122,537 sharesNov 14, 2025: 97,777,843 sharesNov 28, 2025: 91,273,703 sharesDec 15, 2025: 90,532,542 sharesDec 31, 2025: 90,402,353 sharesJan 15, 2026: 84,139,220 sharesJan 30, 2026: 90,772,604 sharesFeb 13, 2026: 89,060,010 sharesFeb 27, 2026: 82,916,967 sharesMar 13, 2026: 87,660,833 sharesMar 31, 2026: 98,660,047 sharesApr 15, 2026: 91,868,691 sharesApr 30, 2026: 97,410,053 sharesMay 15, 2026: 107,087,793 sharesMay 29, 2026: 92,082,595 sharesJun 15, 2026: 123,330,060 sharesJun 30, 2026: 108,476,072 sharesJul 15, 2026: 95,100,718 sharesJul 31, 2026: 89,919,543 sharesAug 14, 2026: 91,996,566 sharesAug 31, 2026: 97,736,674 sharesSep 15, 2026: 94,442,010 sharesSep 30, 2026: 103,954,698 sharesOct 15, 2026: 114,809,733 sharesOct 30, 2026: 112,962,752 shares
Short interest in ACHR by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 2026113.0M−1.85M−1.6%19.1M5.91
Oct 15, 2026114.8M+10.9M+10.4%26.6M4.32
Sep 30, 2026104.0M+9.51M+10.1%25.3M4.10
Sep 15, 202694.4M−3.29M−3.4%21.1M4.47
Aug 31, 202697.7M+5.74M+6.2%28.2M3.47
Aug 14, 202692.0M+2.08M+2.3%52.1M1.77
Jul 31, 202689.9M−5.18M−5.5%37.1M2.42
Jul 15, 202695.1M−13.4M−12.3%27.6M3.45
Jun 30, 2026108.5M−14.9M−12.0%42.3M2.56
Jun 15, 2026123.3M+31.2M+33.9%48.9M2.52
May 29, 202692.1M−15.0M−14.0%60.8M1.52
May 15, 2026107.1M+9.68M+9.9%48.6M2.21
Apr 30, 202697.4M+5.54M+6.0%24.7M3.95
Apr 15, 202691.9M−6.79M−6.9%23.5M3.90
Mar 31, 202698.7M+11.0M+12.6%28.7M3.43
Mar 13, 202687.7M+4.74M+5.7%30.5M2.87
Feb 27, 202682.9M−6.14M−6.9%32.3M2.57
Feb 13, 202689.1M−1.71M−1.9%35.3M2.52
Jan 30, 202690.8M+6.63M+7.9%38.3M2.37
Jan 15, 202684.1M−6.26M−6.9%51.5M1.63
Dec 31, 202590.4M−130.2K−0.1%29.8M3.03
Dec 15, 202590.5M−741.2K−0.8%39.5M2.29
Nov 28, 202591.3M−6.50M−6.7%49.3M1.85
Nov 14, 202597.8M+17.7M+22.0%87.7M1.11
Oct 31, 202580.1M+4.57M+6.0%56.0M1.43
Oct 15, 202575.6M−19.4M−20.4%83.9M1.00
Sep 30, 202594.9M−6.46M−6.4%45.3M2.10
Sep 15, 2025101.4M+8.64M+9.3%22.7M4.46
Aug 29, 202592.8M−2.98M−3.1%23.2M4.00
Aug 15, 202595.8M+12.5M+15.0%32.4M2.96
Jul 31, 202583.3M−5.04M−5.7%42.9M1.94
Jul 15, 202588.3M−6.43M−6.8%36.9M2.39
Jun 30, 202594.8M+28.8M+43.8%44.0M2.15
Jun 13, 202565.9M+2.48M+3.9%44.8M1.47
May 30, 202563.4M−825.5K−1.3%36.7M1.73
May 15, 202564.3M+1.37M+2.2%32.5M1.98
Apr 30, 202562.9M−519.8K−0.8%19.9M3.16
Apr 15, 202563.4M+1.65M+2.7%23.8M2.66
Mar 31, 202561.8M+6.90M+12.6%23.0M2.69
Mar 14, 202554.9M+1.22M+2.3%26.6M2.06
Feb 28, 202553.6M+4.91M+10.1%40.8M1.32
Feb 14, 202548.7M+1.67M+3.6%34.2M1.43
Jan 31, 202547.1M−10.7M−18.5%24.9M1.89
Jan 15, 202557.7M−14.5M−20.1%36.3M1.59
Dec 31, 202472.3M−1.32M−1.8%51.6M1.40
Dec 13, 202473.6M+2.15M+3.0%52.7M1.40
Nov 29, 202471.4M−5.18M−6.8%46.1M1.55
Nov 15, 202476.6M+15.9M+26.1%24.2M3.16
Oct 31, 202460.8M+1.61M+2.7%13.4M4.52

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 ACHR by settlement date
Settlement dateSharesPriceValue
Oct 14, 20266,264$4.44$27.8K
Oct 8, 20262,278,803$4.67$10.6M
Oct 6, 202632,707$4.72$154.4K
Oct 5, 202686,871$4.89$424.8K
Oct 2, 2026214$5.03$1.08K
Sep 29, 2026265,057$5.20$1.38M
Sep 28, 202616,778$5.61$94.1K
Sep 25, 202692,914$5.71$530.5K
Sep 24, 20262,715$5.71$15.5K
Sep 23, 202630$5.69$170.7
Sep 22, 20262,841$5.43$15.4K
Sep 21, 20263,986,711$5.26$21.0M
Sep 18, 202615,711$5.40$84.8K
Sep 16, 20263,344$5.47$18.3K
Sep 11, 202620$5.45$109
Sep 10, 2026145,491$5.50$800.2K
Sep 8, 2026101,322$5.71$578.5K
Sep 4, 2026313$5.76$1.80K
Sep 2, 20261,132$5.56$6.29K
Aug 31, 202648,199$5.75$277.1K
Aug 28, 2026418$5.93$2.48K
Aug 24, 2026232,605$6.30$1.47M
Aug 20, 20265,070$6.45$32.7K
Aug 17, 2026139,943$6.62$926.4K
Aug 14, 202678,160$6.97$544.8K
Aug 13, 2026410,875$6.29$2.58M
Aug 10, 2026147,632$5.59$825.3K
Aug 6, 20262,092$5.20$10.9K
Aug 5, 202668,394$5.31$363.2K
Aug 4, 202667,323$4.84$325.8K

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 ACHR by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 11, 20266,126,80442,72712,958,25447.3%
Nov 10, 20268,758,99323,01818,890,77146.4%
Nov 9, 20268,648,97153,21119,007,34045.5%
Nov 6, 20264,550,006365,53716,021,41528.4%
Nov 5, 20267,028,3881,075,73617,956,84539.1%
Nov 4, 20264,291,50121,6959,757,27944.0%
Nov 3, 20263,439,28316,1447,256,78347.4%
Nov 2, 20265,252,94434,16012,131,42443.3%
Oct 30, 20265,078,28357,11210,935,00646.4%
Oct 29, 20264,882,54926,7799,006,10754.2%
Oct 28, 20265,684,10239,92110,986,91551.7%
Oct 27, 20264,939,86628,98313,783,64035.8%
Oct 26, 20263,559,95844,8867,735,99046.0%
Oct 23, 20265,171,06025,29111,097,45946.6%
Oct 22, 20264,208,0059,7919,575,18943.9%
Oct 21, 20265,795,26430,83811,883,38248.8%
Oct 20, 20264,017,62821,8998,992,47444.7%
Oct 19, 20263,626,62028,0547,809,00646.4%
Oct 16, 20265,635,83582310,219,90155.1%
Oct 15, 20265,772,0979,95313,437,01743.0%
Oct 14, 20267,964,29122,49915,539,12951.3%
Oct 13, 20267,763,46925,57013,752,29856.5%
Oct 12, 20268,948,99323,03415,124,74359.2%
Oct 9, 20269,704,92759,45020,852,38946.5%
Oct 8, 20266,853,87314,26313,704,71950.0%
Oct 7, 202611,110,56316,45419,028,69858.4%
Oct 6, 20269,453,91647,32315,946,64059.3%
Oct 5, 20266,172,05915,73110,927,39056.5%
Oct 2, 20268,620,25525,26513,564,37563.6%
Oct 1, 20266,498,44832,27811,281,86357.6%

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 ACHR
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T219,146,52973,93266,708,908143,68822.3%
Sep 28, 2026T211,453,42969,53549,767,084116,87218.7%
Sep 21, 2026T212,789,62274,23063,598,98591,63516.7%
Sep 14, 2026T218,265,452103,14571,971,458105,54820.2%
Sep 7, 2026T211,486,31071,31243,188,87784,83521.0%
Aug 31, 2026T212,084,79670,16244,654,30294,87121.3%
Aug 24, 2026T211,868,19870,73773,095,081134,76914.0%
Aug 17, 2026T217,396,766102,40377,244,823117,04818.4%
Aug 10, 2026T242,405,842164,488156,781,269320,56721.3%
Aug 3, 2026T215,543,28987,62372,188,298100,67117.7%
Jul 27, 2026T214,923,99184,33776,510,65394,63416.3%
Jul 20, 2026T227,214,934111,507126,952,945182,75917.7%