XOOMAR

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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2026-08-31

Latest settlement

FINRA consolidated

55.1B

Shares short

22,569 symbols

6,464

Days to cover, 10 or more

average 195.0 days

50.7%

Short share of volume

market wide, 2026-09-17

$2.97B

Fails to deliver

5,557 securities, 2026-08-31

As of 2026-09-17.

Biggest short interest increases

BLLYF+13410%IAGG+882%FNGR+847%EQRLF+632%MSTZ+565%NCPL+515%LGCL+492%CHAI+459%REEMF+414%CELU+370%CWVX+308%JPST+307%VIVK+272%FLRN+226%VNRX+225%

Highest days to cover

SymbolShort interestAvg daily volDays to coverChange
NPPXF223.9M209K1000.0+6.5%
CXMSF55.1M259K212.2+13.0%
IVPAF111.5M626K178.1-2.1%
LUNMF15.6M203K76.9+3.9%
IPSC29.5M418K70.6+0.5%
WCPRF31.5M502K62.8+7.2%
CSCCF17.4M292K59.8+0.1%
GSCCF15.1M256K59.1-0.1%
BIREF11.5M204K56.4+8.9%
GLATF26.0M494K52.6-6.8%
IKT19.5M411K47.4-0.9%
IMO19.6M497K39.5-2.3%
ARAFF20.0M534K37.4-4.2%
ASGOF7.3M206K35.6+2.5%
NONOF10.9M313K34.7+35.6%
GALT9.1M272K33.4+0.8%
LCTX29.0M876K33.1+2.3%
BYDDF7.1M218K32.4+95.3%
MRNFF16.6M523K31.8+16.8%
FLWS7.7M250K30.9-0.1%
CRVS19.0M642K29.6-0.6%
HPK9.1M319K28.6-1.9%
OCGN98.3M3.5M28.2-3.4%
HURA6.3M224K27.9-0.9%
TYRA9.4M348K27.1-2.6%
IMRX14.8M547K27.1+2.9%
NOURF9.1M339K27.0-0.0%
LXEO20.5M764K26.8+0.0%
DEI29.7M1.1M26.8+3.1%
FNMAS16.9M640K26.3+3.4%
MAUTF7.6M290K26.1-2.7%
PRTA8.5M342K24.9-0.6%
SVRA41.4M1.7M24.3+7.6%
ORGO14.2M595K24.0+0.1%
CATX23.4M988K23.6+1.4%
SMORF18.5M789K23.5-9.5%
MAIN9.4M408K23.1+0.2%
CD5.4M233K23.0+6.6%
DDD43.7M1.9M22.7+0.3%
SOBO11.1M488K22.6-1.9%
BCAX10.8M491K22.1+3.6%
MMYT8.1M369K22.0-9.5%
RYTM10.3M471K21.9+1.5%
ATHOF6.8M315K21.5+4.3%
WDOFF6.1M290K21.1+4.9%
TNEYF5.0M236K21.0-4.1%
MPT150.1M7.2M20.9+3.9%
IMCR7.8M375K20.8-1.3%
BBOT6.2M298K20.8+6.6%
BCDRF48.1M2.3M20.6+13.9%
FINRA publishes short interest twice a month with a settlement lag of about a week, so positions may have moved since. High days to cover is a fragility signal, not a buy signal.

Daily short volume, 2026-09-17

Highest short share of the day among symbols with 1M or more shares reported. CSV
SymbolShort volumeTotal volumeShort shareExempt
JHCR1.6M1.6M98.9%0
IGM1.3M1.4M97.3%80
BKGI1.8M1.9M92.8%0
BSP1.2M1.4M91.4%24
DBMF1.5M1.6M90.8%24,923
VRP1.0M1.2M87.2%0
FELC939K1.1M85.9%750
IRT1.0M1.2M85.4%0
FITB1.6M1.9M85.1%1,348
PYLD4.8M5.6M84.9%0
EWT1.3M1.5M84.8%5,091
BXMT902K1.1M84.6%8,301
MIR899K1.1M84.6%0
SCHQ882K1.0M84.5%0
LVHI1.4M1.7M84.0%50
ONB1.3M1.5M82.8%89
PRMB1.5M1.9M82.4%0
MAC932K1.1M82.0%848
USFD1.2M1.5M81.8%87
DBX1.4M1.8M80.4%20,388

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 2026-08-31

Largest by dollar value. CSV
SymbolSecurityShares failedPriceValue
IQMMPROSHARES TR GENIUS MONEY MKT3,886,932$100.13$389.2M
TQQQPROSHARES ULTRAPRO QQQ955,665$71.85$68.7M
SUNBSUNBELT RENTALS HLDGS INC COM829,748$73.20$60.7M
DBOEYDeutsche Boerse Ag Unsponsored1,539,520$33.82$52.1M
MSTUETF OPPORTUNITIES TR T-REX 2X1,428,922$30.05$42.9M
SPYSTATE STREET SPDR S&P 500 ETF55,184$769.35$42.5M
MSTZETF OPPORTUNITIES TR T-REX 2X7,312,675$5.30$38.8M
GLDSPDR GOLD TR, SPDR GOLD SHS85,489$408.89$35.0M
MSTXTIDAL TR II DEFIANCE DAILY TAR2,310,607$13.87$32.0M
USARUSA RARE EARTH INC COM1,748,391$17.99$31.5M
CRMSALESFORCE,INC121,850$256.00$31.2M
AZNASTRAZENECA PLC ORD SHS (GBR)185,230$162.70$30.1M
BITOPROSHARES TRUST PROSHARES BITC2,806,341$10.45$29.3M
SPXLDIREXION SHS ETF TR DIREXION D100,379$290.14$29.1M
KRESPDR SER TR STATE STREET SPDR359,919$74.30$26.7M
HYGISHARES TR324,187$79.74$25.9M
TNADIREXION SHS ETF TR DIREXION S358,774$69.95$25.1M
SPCHTHEMES ETF TR LEVERAGE SHS 2X2,649,549$9.12$24.2M
AMZNAMAZON COM INC;COM USD0.0186,643$266.43$23.1M
ETHUVOLATILITY SHS TR 2X ETHER ETF894,726$25.72$23.0M

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, 2026-09-17

Cboe 48 · Nasdaq 67 symbols. CSV
SymbolSecurityMarketDays on listSince
AMPUDefiance Daily Target 2X Long AMPX ETFCboe602026-06-24
ASTNDefiance Daily Target 2X Short ASTS ETFCboe602026-06-24
ASTYDefiance Daily Target 2X Long ASTS ETFCboe602026-06-24
BMNGTHEMES ETF TR LEVERAGE SHS 2XNasdaq602026-06-24
LUNLDefiance Daily Target 2X Long LUNR ETFCboe602026-06-24
MSTXTIDAL TR II DEFIANCE DAILY TARNasdaq602026-06-24
NVDGRANITESHARES ETF TR 2X SHORTNasdaq602026-06-24
ONDLDefiance Daily Target 2X Long ONDS ETFCboe602026-06-24
POELDefiance Daily Target 2X Long POET ETFCboe602026-06-24
QBTZTIDAL TR II DEFIANCE DAILY TARNasdaq602026-06-24
RCAXTIDAL TR II DEFIANCE DAILY TARNasdaq602026-06-24
RGTXTIDAL TR II DEFIANCE DAILY TARNasdaq602026-06-24
RGTZTIDAL TR II DEFIANCE DAILY TARNasdaq602026-06-24
RKLXTIDAL TR II DEFIANCE DAILY TARNasdaq602026-06-24
SMCXTIDAL TR II DEFIANCE DAILY TARNasdaq602026-06-24

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 (our lists start 2022-01-03; a plus sign means the streak was already running then); NYSE-listed names will be added when the NYSE file can be read.

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 only complete count of short positions in US equities; everything else is an estimate.

Days to cover divides the short position by average daily volume. It answers how long it would take every short to close at a normal pace, which is the metric that turns a large short into a squeeze candidate.

The page shows the latest settlement for every symbol with the change from the previous report; each ticker's history is available through the API and the CSV. Sorting by days to cover, then filtering for a rising short count, surfaces the names where a squeeze has room to run.

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 method

Source
FINRA consolidated short interest files; FINRA Reg SHO daily short sale volume files; SEC fails-to-deliver data
Updates
Short interest settles on the 15th and the last business day of each month, published about eight business days later. Daily short volume is posted by FINRA each evening and loaded at 01:30 UTC. Fails to deliver arrive twice a month, a few weeks after the half month ends. Last update 2026-09-17.
History
Short interest from December 2017; daily short volume from August 2021; fails to deliver from January 2010; Regulation SHO threshold lists from September 2026.
Coverage
22,569 symbols in the latest settlement file.Daily short volume for 12,331 symbols on 2026-09-17.Fails to deliver for 5,557 securities at settlement 2026-08-31.
Get the data
JSON API and CSV download30 requests a minute without a key, 120 a minute with a key from a free account.

Data checks. Every dataset is checked against its source once a day. This dataset passed the last run, 18 Sep 05:40 UTC.

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 above five with a rising short count is the classic squeeze setup. Above ten is rare and worth attention.
  • 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. The signal is a symbol far above its own average, or above 60% for days in a row.
  • 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 Short Interest & Squeeze Analysis

Data-driven research reports on heavily shorted stocks and days-to-cover spikes.

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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. We read the Nasdaq and Cboe lists every morning; the table shows the longest current streaks, and /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. We load each file the day it appears.
Why do you filter by volume?
Illiquid microcaps produce absurd days-to-cover numbers that mean nothing. The headline table requires meaningful average daily volume; the API returns everything.
Does high short interest predict a squeeze?
It's a precondition, not a prediction. Squeezes need a catalyst. High days to cover tells you where the dry tinder is stacked.
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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