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ASTS

AST SpaceMobile, Inc.

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ASTS in the last 90 days

AST SpaceMobile, Inc. (ASTS) had no US House transactions and 3 insider purchases worth $619,200 by 1 insider in filings from the last 90 days.

FINRA’s latest report (settlement 30 SEPT 2026) shows 64,828,174 shares held short, 6.1 days to cover, down 0.7% from the report before.

  • Insiders: open-market purchases only (Form 4 code P); a purchase filed by related owners counts once.
  • Delay: each filing below shows how many days passed between the trade and its publication. None of this is real-time.

Latest filing on file: 01 SEPT 2026 · FINRA settlement 30 SEPT 2026 · public filings, reported as filed ·

AST SpaceMobile (ASTS) short interest since August 2025

In FINRA’s report settled on 30 September 2026, 64,828,174 AST SpaceMobile shares were held short. At the average of 10,617,262 shares traded a day, that is 6.11 days to cover. The count was 0.66% lower than two weeks before, just under the 15 September figure of 65,261,118, the highest in our records.

Short interest in ASTS has grown through most of the past year. It stood at 39,584,706 shares in August 2025 and was lowest at 36,624,089 on 28 November 2025. From there it rose in most reports, by 14.11% in the 15 June 2026 report alone. Across the 27 reports, the count is up 63.77%.

Days to cover is now higher than in most of our records. It peaked at 7.25 on 31 August 2026. In the first half of 2026 it averaged 2.84 days, and it fell as low as 1.76 on 29 May, when 31,042,335 shares traded a day.

Among the 4,468 stocks in this site’s short interest ranking, those trading at least 100,000 shares a day, ASTS came 89th by shares held short and 1,028th by days to cover on 30 September. One insider purchase is on file: director Adriana Cisneros bought 10,822 shares on 31 August 2026 at $57.00 to $58.87, $619,200 in all, and filed the next day.

Is ASTS heavily shorted?
By share count, more than most US stocks: 89th of 4,468 actively traded listings on 30 September 2026, with 64,828,174 shares held short. By days to cover, 6.11, it was above the 3.79-day median for the same stocks.
Is 22% short interest high?
That kind of figure compares shares held short with the float, which FINRA does not report. For ASTS the filed numbers are 64,828,174 shares and 6.11 days to cover. In the same report, 1,524 of 4,468 actively traded US stocks, about one in three, had 5 or more days to cover.
What are the 10 most shorted stocks right now?
It depends on the measure. By days to cover, the high short interest list on this site ranks every actively traded US stock in FINRA’s latest report and shows the top 25. On 30 September 2026, Century Therapeutics (IPSC) led at 50.91 days. By shares held short, NVIDIA led with 311,389,688.

What the filings show

What the filings show · last 90 days · Quiet Money indicator

2 of 4 sources

+7Balanced

Leaning outBalancedLeaning in

The disclosed money is split, on what has actually been filed. This reads on two of the four sources we track.

Short interest
Short interest rose 9.2% — 59,349,055 to 64,828,174 shares between 15 JUL 2026 and 30 SEPT 2026. See the filings →
-23
Insider purchases
1 insider disclosed buying $619,200 across 1 filing.
+46

This summarises filings that have already been published — it is not a forecast, a rating of the company, or advice. Every figure above is listed in full further down this page, with the document it came from.

FINRA short interest

Settlement 30 SEPT 2026 · shares held short

64,828,174shares held short

Days to cover

6.11

Avg daily volume

10,617,262

Since last report

-0.66%

As of 30 September 2026, 64,828,174 AST SpaceMobile, Inc. shares were held short — the total across every reporting firm, not one fund's position. That is 432,944 shares fewer than the previous report, a 0.66% decrease. At the average daily volume of 10,617,262 shares, that position represents 6.11 days of trading — what the filing calls days to cover.

Across the 12 reports we hold, the position has risen from 48,628,411 shares on 15 April 2026 to 64,828,174 today, a change of 33.3%. The highest reading in that window was 65,261,118 shares on 15 September 2026.

SettlementShares shortDays to cover
30 SEPT 202664,828,1746.11
15 SEPT 202665,261,1186.93
31 AUG 202664,140,3987.25
14 AUG 202657,475,2124.57
31 JUL 202656,847,2593.30
15 JUL 202659,349,0554.82
30 JUN 202664,715,0422.59
15 JUN 202662,487,1522.61
29 MAY 202654,759,4541.76
15 MAY 202652,399,8292.41
30 APR 202653,994,1172.96
15 APR 202648,628,4113.31

Why there is no float percentage, what days to cover means and when FINRA publishes: how short interest is counted here.

Disclosed insider buying on file

$619,200across 3 purchases

Open-market purchases only — the amount is a fact, not a verdict.

On file here

Short positions0

Insider purchases3

US House transactions0

Latest change01 SEPT 2026

SHORT POSITIONS · 0INSIDER BUYS · 3US HOUSE · 0

Insider purchases on file

  • SEC — Form 4 insider purchase

    Cisneros AdrianaDirector

    BOUGHTClass A Common Stock

    $79,981

    1,384 sh @ $57.79

    31 AUG 2026 → filed 01 SEPT 2026

    Filed 1 day after the tradeSEC EDGAR · 0001104659-26-104326 →

  • SEC — Form 4 insider purchase

    Cisneros AdrianaDirector

    BOUGHTClass A Common Stock

    $499,776

    8,768 sh @ $57

    31 AUG 2026 → filed 01 SEPT 2026

    Filed 1 day after the tradeSEC EDGAR · 0001104659-26-104326 →

  • SEC — Form 4 insider purchase

    Cisneros AdrianaDirector

    BOUGHTClass A Common Stock

    $39,443

    670 sh @ $58.87

    31 AUG 2026 → filed 01 SEPT 2026

    Filed 1 day after the tradeSEC EDGAR · 0001104659-26-104326 →
What this page will never showNo buy or sell ratingsNo price targetsNo forecastsIndicators are rules-based summaries of the filingsDocuments, dates, and how long they took to become public.