What is MSTR's short interest?

30,741,182 shares, as of the 15 September 2026 settlement date. That is the figure FINRA published, unadjusted.

What percentage of the float is short?

We do not publish that, because FINRA does not publish float. The regulator reports the number of shares held short; turning it into a percentage needs a share count from somewhere else, and different sources disagree about what counts as float. We would rather give you the number that was actually filed than a percentage built on an assumption.

It is 17 days old, and that is as fresh as short interest gets. FINRA measures it twice a month and publishes it seven business days after the settlement date. Any site showing you a "live" short interest figure is showing you something else.

What does days to cover mean?

It is the short position divided by average daily trading volume — here, 1.42. It describes how many days of ordinary trading the position is equivalent to. It is arithmetic from the filing, not a prediction about what will happen.

Where does this come from?

FINRA's consolidated short interest file, which is public. We read it directly and store it unchanged, except that we blank the days-to-cover placeholder FINRA writes when a stock has almost no volume.

Ticker

MSTR

Strategy Inc Common Stock Clas

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MSTR in the last 90 days

Strategy Inc Common Stock Clas (MSTR) had 1 congress transaction by 1 member and no insider purchases in filings from the last 90 days.

FINRA’s latest report (settlement 15 SEPT 2026) shows 30,741,182 shares held short, 1.4 days to cover, down 5.8% from the report before.

Congress: 0 purchases and 1 sale reported, amounts in the bands the law requires.
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: 13 AUG 2026 · FINRA settlement 15 SEPT 2026 · public filings, reported as filed

What the filings show

What the filings show · last 90 days

2 of 4 sources

+6Balanced

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 fell 23.7% — 40,275,607 to 30,741,182 shares between 15 JUL 2026 and 15 SEPT 2026. See the filings →; +59
Congress: 1 member of Congress disclosed 0 purchases and 1 sale. See the filings →; -100

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 15 SEPT 2026 · shares held short

30,741,182shares held short

Days to cover

1.42

Avg daily volume

21,661,051

Since last report

-5.77%

As of 15 September 2026, 30,741,182 Strategy Inc Common Stock Clas shares were held short — the total across every reporting firm, not one fund's position. That is 1,880,942 shares fewer than the previous report, a 5.77% decrease. At the average daily volume of 21,661,051 shares, that position represents 1.42 days of trading — what the filing calls days to cover.

This is the most recent figure that exists, and it is 17 days old. FINRA collects short interest twice a month, on a settlement date, and publishes it about eight business days later. So nobody has a live short-interest number for MSTR — not us, and not anyone quoting one. We print the settlement date on the figure so you always know which day you are looking at.

Across the 12 reports we hold, the position has fallen from 35,883,788 shares on 31 March 2026 to 30,741,182 today, a change of 14.3%. The highest reading in that window was 42,776,693 shares on 30 June 2026.

Settlement	Shares short	Days to cover
15 SEPT 2026	30,741,182	1.42
31 AUG 2026	32,622,124	1.00
14 AUG 2026	31,879,835	2.05
31 JUL 2026	32,480,941	2.16
15 JUL 2026	40,275,607	1.97
30 JUN 2026	42,776,693	1.32
15 JUN 2026	40,878,742	1.82
29 MAY 2026	37,684,181	2.82
15 MAY 2026	39,548,870	2.44
30 APR 2026	40,778,552	1.94
15 APR 2026	37,196,828	2.38
31 MAR 2026	35,883,788	1.79

What is MSTR's short interest?: 30,741,182 shares, as of the 15 September 2026 settlement date. That is the figure FINRA published, unadjusted.
What percentage of the float is short?: We do not publish that, because FINRA does not publish float. The regulator reports the number of shares held short; turning it into a percentage needs a share count from somewhere else, and different sources disagree about what counts as float. We would rather give you the number that was actually filed than a percentage built on an assumption.
How current is this?: It is 17 days old, and that is as fresh as short interest gets. FINRA measures it twice a month and publishes it seven business days after the settlement date. Any site showing you a "live" short interest figure is showing you something else.
What does days to cover mean?: It is the short position divided by average daily trading volume — here, 1.42. It describes how many days of ordinary trading the position is equivalent to. It is arithmetic from the filing, not a prediction about what will happen.
Where does this come from?: FINRA's consolidated short interest file, which is public. We read it directly and store it unchanged, except that we blank the days-to-cover placeholder FINRA writes when a stock has almost no volume.

Disclosed insider buying on file

—no purchase on file passed the price check

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

On file here

Short positions0

Insider purchases0

Congress transactions6

Latest change13 AUG 2026

SHORT POSITIONS · 0INSIDER BUYS · 0CONGRESS · 6

Congress transactions on file

6 disclosed · newest first · every row links to its filing

Who		Amount as filed	Traded	Filed	Lag
Hon. Shri Thanedar	SOLD	$15,001 – $50,000	21 OCT 2025	13 AUG 2026	296 days — the law says 45
Hon. Gilbert Cisneros	BOUGHT	$15,001 – $50,000	05 JUN 2026	02 JUL 2026	27 days
Hon. Shri Thanedar	BOUGHT	$15,001 – $50,000	01 JUL 2024	11 AUG 2025	406 days — the law says 45
Hon. Jefferson Shreve	SOLD	$15,001 – $50,000	12 MAY 2025	22 JUN 2025	41 days
Hon. Neal Patrick MD, Facs Dunn	BOUGHT	$15,001 – $50,000	24 DEC 2024	10 MAR 2025	76 days — the law says 45
Hon. Jefferson Shreve	BOUGHT	$15,001 – $50,000	24 FEB 2025	09 MAR 2025	13 days

What this page will never showNo price targetsNo score out of 100No buy or sell callsNo predictionsDocuments, dates, and how late they were.