greeksoup/ stock research
Stock research / United States / ALMU / Short interest

Aeluma, Inc. short interest

4.0M shares of Aeluma were sold short at the 15 October 2026 settlement, the most at any settlement since 14 Apr 2023, when our record starts. Short sellers would need 6.5 days of normal trading to buy them back.

Shares sold short4.0Mat 15 Oct 2026
Change on the settlement before+6.7%+322% over a year
Days to cover6.48at 613K shares a day
Of shares in issue20.63%shares short over shares outstanding
New to this? How to read this page
  1. Short interest is the number of shares investors have borrowed and sold, betting the price will fall, and not yet bought back.
  2. Days to cover is shares short over an average day's trading: how many days it would take short sellers to buy them all back. Above 5 or so is high.
  3. Rising short interest says more investors are betting against the stock. A crowded short can also rise fast if shorts rush to buy back.
  4. Brokers report it twice a month to FINRA, about ten days after each settlement date.
  5. What is short interest?

Short interest, days to cover and the price

Short interest is the most at any settlement since 14 Apr 2023, when our record starts, and the share price moved -65% over the last year.

Shares sold shortDays to coverShare price

Three charts on one timeline. Top: shares sold short at each settlement. Middle: days to cover, taller meaning shorts would need longer to buy back. Bottom: the share price, so you can see whether shorts added as the price fell or rose.

How it compares

every company on the site

    The bar ranks every company on the site from the lowest on the left to the highest on the right, in three equal thirds; the small figures under it are the values where each third starts, and the black tick is the middle company. The orange dot is this company; the grey ticks are the other companies in its industry (hover or tap for names). A hatched block is companies tied at none.

    Every settlement since 14 Apr 2023 as a table
    SettlementShares shortChangeAverage daily volumeDays to cover
    15 October 20264.0M+6.7%613K6.48
    30 September 20263.7M+2.8%811K4.59
    15 September 20263.6M-2.3%409K8.86
    31 August 20263.7M+3.2%484K7.65
    14 August 20263.6M-6.2%468K7.67
    31 July 20263.8M+7.0%519K7.38
    15 July 20263.6M+3.1%497K7.20
    30 June 20263.5M+14.4%691K5.03
    15 June 20263.0M-3.1%1.2M2.44
    29 May 20263.1M-1.4%1.4M2.18
    15 May 20263.2M-11.8%2.4M1.33
    30 April 20263.6M-2.2%1.8M2.05
    15 April 20263.7M+18.6%2.4M1.57
    31 March 20263.1M+18.7%563K5.52
    13 March 20262.6M+15.6%893K2.93
    27 February 20262.3M-3.4%319K7.09
    13 February 20262.3M+17.5%453K5.18
    30 January 20262.0M+31.2%438K4.55
    15 January 20261.5M-12.3%433K3.51
    31 December 20251.7M+21.4%414K4.19
    15 December 20251.4M+2.3%324K4.41
    28 November 20251.4M+6.1%251K5.57
    14 November 20251.3M+21.6%311K4.23
    31 October 20251.1M+15.0%368K2.94
    15 October 2025941K-14.8%417K2.26
    30 September 20251.1M-12.1%578K1.91
    15 September 20251.3M+19.7%419K3.00
    29 August 20251.0M-3.1%199K5.27
    15 August 20251.1M+13.2%304K3.56
    31 July 2025957K+20.1%359K2.66
    15 July 2025796K+15.4%299K2.66
    30 June 2025690K+203.7%600K1.15
    13 June 2025227K+34.0%520K1.00
    30 May 2025170K+67.2%241K1.00
    15 May 2025101K+30.5%186K1.00
    30 April 202578K+2.6%157K1.00
    15 April 202576K-32.5%58K1.30
    31 March 2025112K+3927.0%99K1.14
    14 March 20253K+253.8%54K1.00
    28 February 2025788-15.4%60K1.00
    14 February 2025931+29.5%23K1.00
    31 January 2025719-92.5%28K1.00
    15 January 202510K+648.8%62K1.00
    31 December 20241K+167.1%95K1.00
    13 December 2024477+29.6%32K1.00
    29 November 2024368-72.2%17K1.00
    15 November 20241K+1225.0%5K1.00
    31 October 2024100-97.8%6K1.00
    15 October 20245K-16.8%8685.31
    30 September 20246K+35.3%12K1.00
    13 September 20244K+29.7%5K1.00
    30 August 20243K-9.3%2K1.30
    15 August 20243K+16.2%9K1.00
    31 July 20243K-25.4%11K1.00
    28 June 20244K+14.8%13K1.00
    14 June 20244K-9.1%8K1.00
    31 May 20244K-12.4%26K1.00
    15 May 20244K+46.7%43K1.00
    30 April 20243K+7.0%5K1.00
    15 April 20243K+24.9%5K1.00
    28 March 20242K-13.8%4K1.00
    15 March 20243K-24.2%8K1.00
    29 February 20243K+57100.0%17K1.00
    15 February 20246+0.0%21K1.00
    31 January 20246-94.0%13K1.00
    31 October 2023100+8.7%2K1.00
    15 September 202392-76.5%3K1.00
    31 August 2023392+292.0%2K1.00
    15 June 2023100+300.0%72K1.00
    28 April 202325-96.4%1521.00
    14 April 20237002K1.00
    Shares in millions (M) or thousands (K); hold the pointer on a figure for the exact count. FINRA publishes consolidated short interest twice a month, about ten days after each settlement.