Short Interest Tracker

FINRA short interest twice a month with days to cover, FINRA daily short sale volume for every US listed stock, and SEC fails to deliver by settlement date.

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2026-09-15

Latest settlement

FINRA consolidated

55.6B

Shares short

22,595 symbols

6,480

Days to cover, 10 or more

of 22,595 symbols

51.8%

Short share of volume

market wide, 2026-10-05

$10.35B

Fails to deliver

5,801 securities, 2026-09-14

As of 2026-10-05.

Biggest short interest increases

SMTH+2021%SURG+1548%CRDU+633%SNK+432%FLTR+419%IDEV+417%UUP+415%DIHP+413%APPX+388%AIM+383%LYTE+345%FLRN+296%PAAA+296%FAMI+282%TRLV+254%

Highest days to cover

Symbol	Short interest	Avg daily vol	Days to cover	Change
AMXOF	151.9M	1.1M	137.6	-13.8%
SVRA	43.3M	1.2M	36.3	+4.6%
HRTX	43.4M	1.6M	27.8	-3.3%
LCTX	29.5M	1.1M	26.6	+1.7%
CCCC	40.2M	1.8M	22.7	+7.4%
CNQ	182.9M	8.3M	22.1	+61.6%
DDD	43.9M	2.1M	21.3	+0.5%
TROW	27.4M	1.3M	20.4	+4.6%
NWBO	75.5M	3.8M	19.8	+7.4%
PROK	21.4M	1.1M	19.0	+3.4%
ACHC	21.5M	1.1M	18.8	-4.8%
TSHA	51.4M	2.7M	18.8	+9.8%
TNGX	41.9M	2.2M	18.8	-1.8%
TGTX	30.2M	1.6M	18.5	+0.1%
DEI	30.8M	1.7M	18.3	+3.7%
PCT	56.3M	3.1M	18.0	+1.3%
SBH	19.9M	1.1M	17.9	-1.4%
OVID	21.2M	1.2M	17.3	+2.3%
GLUE	19.3M	1.1M	17.1	+6.6%
CATX	22.8M	1.4M	16.9	-2.3%
CERS	18.0M	1.1M	16.6	+1.6%
OPTU	27.0M	1.6M	16.6	-4.3%
CRSP	19.1M	1.2M	16.5	+1.6%
PGEN	42.3M	2.6M	16.3	+0.2%
CMPX	41.6M	2.6M	16.0	+2.1%
IAUX	90.7M	5.7M	15.9	-2.8%
OLMA	16.1M	1.0M	15.9	+2.6%
IBRX	125.4M	7.9M	15.9	-0.2%
XRX	39.9M	2.5M	15.8	-1.6%
VRDN	19.5M	1.2M	15.7	-0.2%
EDIT	30.0M	1.9M	15.7	-0.9%
KBE	18.8M	1.2M	15.6	+3.1%
SPRY	23.1M	1.5M	15.5	-0.6%
CLM	33.0M	2.1M	15.5	+4.3%
ALT	51.7M	3.4M	15.4	+4.1%
MPT	145.3M	9.6M	15.1	-3.2%
CERT	28.8M	1.9M	15.0	-0.6%
RZLT	16.8M	1.1M	14.8	-1.1%
SNDX	20.7M	1.4M	14.7	-4.7%
CM	15.0M	1.0M	14.7	-1.9%
WB	15.7M	1.1M	14.7	+4.6%
FIP	19.3M	1.3M	14.4	+0.1%
ABSI	37.3M	2.6M	14.4	+1.3%
UNP	27.4M	1.9M	14.4	-1.1%
IMVT	17.3M	1.2M	14.3	+9.3%
SVM	26.8M	1.9M	14.3	-2.1%
RLAY	44.5M	3.1M	14.2	+2.1%
ORIC	17.5M	1.2M	14.2	+1.5%
OCUL	29.9M	2.1M	14.2	+6.7%
NTLA	46.7M	3.3M	14.1	+6.3%

FINRA publishes short interest twice a month, about a week after the settlement date, so positions may have moved since. High days to cover means a crowded short; it isn't a reason to buy.

Daily short volume, 2026-10-05

Highest short share of the day among heavily traded symbols. CSV

Symbol	Short volume	Total volume	Short share	Exempt
XBB	1.0M	1.0M	99.8%	0
DDFG	2.6M	2.7M	99.6%	0
AFIF	8.7M	8.9M	97.8%	0
FLJP	2.6M	2.7M	95.9%	406
BNDY	1.7M	1.9M	93.3%	0
MIR	1.5M	1.6M	90.8%	0
CCO	1.5M	1.6M	89.3%	11
EMXC	1.5M	1.7M	89.0%	10
CCEP	1.0M	1.1M	88.4%	535
WRD	1.7M	2.0M	86.6%	30
BAB	1.2M	1.4M	85.6%	0
MDT	15.2M	17.9M	84.9%	15,698
FTCA	1.1M	1.3M	84.2%	0
ITM	1.2M	1.5M	83.4%	0
VSXY	1.1M	1.3M	82.5%	524
AXTA	1.2M	1.4M	82.2%	24
PK	1.5M	1.9M	81.0%	182
DFAI	905K	1.1M	80.8%	1,738
DBMF	1.3M	1.6M	80.2%	0
NMRA	1.4M	1.7M	79.8%	172,505

Short volume counts shares sold short on FINRA reporting facilities that day, whether or not the position was closed by the close. It is a flow, not a position; short interest above is the position.

Fails to deliver, settlement 2026-09-14

Largest by dollar value. CSV

Symbol	Security	Shares failed	Price	Value
SPY	STATE STREET SPDR S&P 500 ETF	4,591,440	$764.29	$3.51B
LQD	ISHARES IBOXX $ INVESTMENT GRA	8,061,248	$104.32	$840.9M
IVV	ISHARES CORE S&P 500 ETF	741,027	$767.92	$569.0M
QQQ	INVESCO QQQ TR	767,045	$714.88	$548.3M
HYG	ISHARES TR	4,641,362	$78.60	$364.8M
KHC	KRAFT HEINZ CO COM	13,960,002	$24.60	$343.4M
BIL	STATE STREET SPDR BLOOMBERG 1-	3,376,869	$91.50	$309.0M
IWM	ISHARES RUSSELL 2000 ETF	825,370	$288.89	$238.4M
VTEB	VANGUARD MUN BD FDS TAX-EXEMPT	3,855,254	$48.43	$186.7M
MUB	ISHARES NATIONAL MUNI BOND ETF	1,543,494	$103.17	$159.2M
VTES	VANGUARD WELLINGTON FD SHORT-T	1,592,299	$99.86	$159.0M
PDBA	INV.ACT.MANGD EXCH-TRD COMM.FD	3,462,620	$38.69	$134.0M
XLV	SELECT SECTOR SPDR TR ST ST HE	536,621	$165.36	$88.7M
XOP	SPDR SER TR STATE STREET SPDR	445,504	$195.72	$87.2M
SMH	VANECK ETF TR SEMICONDUCTOR ET	153,219	$568.53	$87.1M
IYR	ISHARES TR	694,464	$100.75	$70.0M
CTVA	CORTEVA INC COM	823,197	$83.90	$69.1M
SOXL	DIREXION SHS ETF TR DIREXION D	500,424	$121.82	$61.0M
GJUN	FT VEST U.S. EQUITY MODERATE B	1,345,533	$41.88	$56.4M
XLP	STATE STREET CONSUMER STAPLES	668,588	$83.38	$55.7M

Shares that were not delivered on settlement date, as reported by NSCC to the SEC. The SEC publishes each half month a few weeks after it ends, so this table lags the two above.

Regulation SHO threshold list, 2026-10-05

Cboe 45 · Nasdaq 79 symbols. CSV

Symbol	Security	Market	Days on list	Since
AMPU	Defiance Daily Target 2X Long AMPX ETF	Cboe	60	2026-07-13
ASTN	Defiance Daily Target 2X Short ASTS ETF	Cboe	60	2026-07-13
ASTY	Defiance Daily Target 2X Long ASTS ETF	Cboe	60	2026-07-13
BMNG	THEMES ETF TR LEVERAGE SHS 2X	Nasdaq	60	2026-07-13
LUNL	Defiance Daily Target 2X Long LUNR ETF	Cboe	60	2026-07-13
MSTX	TIDAL TR II DEFIANCE DAILY TAR	Nasdaq	60	2026-07-13
NVD	GRANITESHARES ETF TR 2X SHORT	Nasdaq	60	2026-07-13
ONDL	Defiance Daily Target 2X Long ONDS ETF	Cboe	60	2026-07-13
POEL	Defiance Daily Target 2X Long POET ETF	Cboe	60	2026-07-13
QBTZ	TIDAL TR II DEFIANCE DAILY TAR	Nasdaq	60	2026-07-13
RCAX	TIDAL TR II DEFIANCE DAILY TAR	Nasdaq	60	2026-07-13
RGTX	TIDAL TR II DEFIANCE DAILY TAR	Nasdaq	60	2026-07-13
RGTZ	TIDAL TR II DEFIANCE DAILY TAR	Nasdaq	60	2026-07-13
RKLX	TIDAL TR II DEFIANCE DAILY TAR	Nasdaq	60	2026-07-13
SMCX	TIDAL TR II DEFIANCE DAILY TAR	Nasdaq	60	2026-07-13

A security is on its listing market's threshold list when fails to deliver have been at least 10,000 shares and 0.5% of shares outstanding for five straight settlement days; broker-dealers must close out fails in these names under Rule 204. Longest current streaks first, from the Nasdaq and Cboe lists; a plus sign means the streak was already running when our history starts on 2022-01-03.

What this data is

Short interest

Twice a month, broker-dealers report to FINRA how many shares of each stock their customers hold short as of the settlement date. FINRA consolidates the reports across venues and publishes the total about eight business days later. It's the official count of short positions in US equities, not an estimate.

Days to cover divides the short position by average daily volume. It answers how long it would take every short to buy back at a normal pace, which makes it the standard measure of how crowded a short is.

The CSV carries the latest settlement for every symbol with the change from the previous report, and the API carries each ticker's history. The headline table lists the most crowded shorts first.

Two daily series sit under the twice-monthly count. FINRA's Reg SHO files report, for every symbol, how many shares were sold short on its reporting facilities each day and the total shares reported, so the short share of a day's volume is visible the same evening. The SEC's fails-to-deliver files list, per security and settlement date, how many shares were not delivered on time. Both are on each company page next to the short interest for the same ticker.

Source and updates

Source: FINRA consolidated short interest files; FINRA Reg SHO daily short sale volume files; SEC fails-to-deliver data
Credit: FINRA, Nasdaq, Cboe and SEC.
Updates: Short interest settles on the 15th and the last business day of each month and is published about eight business days later. Daily short volume is posted by FINRA each evening and appears here the next morning. Fails to deliver arrive twice a month, a few weeks after the half month ends. Last update 2026-10-05.
History: Short interest from December 2017; daily short volume from August 2021; fails to deliver from January 2010; Regulation SHO threshold lists from January 2022.
Coverage: 22,595 symbols in the latest settlement file.Daily short volume for 12,336 symbols on 2026-10-05.Fails to deliver for 5,801 securities at settlement 2026-09-14.
Get the data: JSON API and CSV download10 requests a minute without a key, 30 with a free key. Keys come with a free account.

How to read it

Short interest as a share of float is the ratio that matters; the raw share count is meaningless across companies of different sizes.
Days to cover rising along with the short count means shorts are adding faster than the stock trades.
A falling short count into rising price is covering, and it's usually most of the way done by the time it shows in a twice-monthly report.
Daily short volume near half of total volume is normal for most large stocks because market makers sell short to fill buy orders. What stands out is a symbol far above its own average short share, day after day.
Fails to deliver that persist for five settlement days at 0.5% of shares outstanding put a stock on the threshold list; the raw fail count is only meaningful next to the float.

Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.

Latest briefs

All market reports

trading

GameStop Short Interest Climbs 5.47% to 56.99 Million Shares

GameStop's short interest rose 5.47% to 56.99 million shares at the August 31 settlement, and days to cover jumped from 5.31 to 9.72 as volume fell.

Sep 25, 2026Read

trading

GameStop Short Interest Falls 31% to Its Lowest Since March 2025

GameStop's short interest fell 31.45% to 39,069,126 shares at the September 15 settlement, its steepest drop since May 2024, and days to cover fell from 9.72 to 4.29.

Sep 25, 2026Read

Frequently Asked Questions

What is days to cover?

Short interest divided by average daily volume. It estimates how many trading days shorts would need to buy back their entire position. Higher means a more crowded, more fragile short.

What is the Regulation SHO threshold list?

Each listing market's daily list of securities whose fails to deliver have reached at least 10,000 shares and 0.5% of shares outstanding for five straight settlement days. Broker-dealers must close out fails in those names under Rule 204. The table shows the longest current streaks from the Nasdaq and Cboe lists; /api/markets/threshold-list returns any day or any symbol's history.

How fresh is the data?

FINRA publishes twice a month, for settlement dates around the 15th and month-end, with roughly a one-week publication lag. It appears here the day FINRA publishes it.

Why are thinly traded stocks left out of the table?

Days to cover means little when a stock barely trades, so the headline table sticks to stocks with real volume. The API returns every symbol.

Does high short interest mean a squeeze?

No. It's a precondition, not a prediction: a squeeze needs a catalyst. High days to cover only shows where shorts would struggle to exit quickly.

Can I get history for one symbol?

Yes: /api/markets/short-interest?symbol=GME returns every biweekly report we have for that symbol, /api/markets/short-volume?symbol=GME the daily short volume and /api/markets/fails-to-deliver?symbol=GME the fails. The company page for the ticker shows all three together.

What is the difference between short interest and short volume?

Short interest is a position: shares held short on the settlement date, reported twice a month. Short volume is a flow: shares sold short during one day, whether or not they were bought back before the close. A day where 55% of volume was sold short says nothing about how many of those shares are still short.

What is a fail to deliver?

When a seller does not deliver the shares by settlement date the trade fails. The SEC publishes the outstanding fails per security twice a month. Persistent large fails in a stock are one of the inputs to the Reg SHO threshold list, which restricts further short selling in that name.

Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.

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