SHORTSLFTOLFTO short interest surges 21.3% over one week to 3.26M shares, reversing a month-long decline as cost to borrow…SHORTSWOLFWOLF utilization hits 100%, matching 52-week high; zero availability remains as short interest climbs to 107% of free…SHORTSFCPTFCPT short interest jumps 34% in one week to 3.47% of float, highest level since early October, as cost to borrow…OPTIONSSGRYSGRY put-call ratio explodes to 0.40, 4.2 standard deviations above its 20-day mean of 0.10, signaling extreme…SHORTSDBVDBV cost-to-borrow drops to 11.04%, down 184% from last week, as availability tightens to 5.5% of short interest with…SHORTSTIPTTIPT short interest surges 25% in one week to 2.95% of float, driven by activist involvement and upcoming earnings.SHORTSGPGIGPGI short interest jumps to 23.0% of free float MACROAustralia 5Y +4bp, a 1.7σ move MACROJapan 5Y +4bp, a 1.6σ move SHORTSMTHMTH short interest surges 25.7% in one week to 7.4% of free float, driven by mounting analyst downgrades and Q2…OPTIONSFRFR put/call ratio crashes to extreme low, signaling heavy call buying ahead of earnings.SIGNALAMAM retail attention spikes to 5.61 standard deviations above its 90-day average via Wikipedia views and ORTEX…SHORTSRYZRYZ short interest surges 28.5% in one week to 4.7% of float, highest push in months as stock rallies 5.4%.SHORTSWHRWHR short interest jumps to 32.1% of free float SHORTSHHHHHH short interest jumps to 16.6% of free float SHORTSCECE short interest falls to 7.6% of free float SHORTSALMRALMR short interest falls 29% in one week to 2.45M shares, down from 3.45M on Oct 16, as stock rallies 13% weekly;…SHORTSADAMADAM short interest surges 42% in one week to 3.8% of float, driven by activist pressure from Howard Amster's 13D…OPTIONSCSLCSL put/call ratio surges to 1.23, hitting 4.4 standard deviations above its 20-day mean of 0.247, signaling a sharp…SHORTSRXTRXT short interest falls to 23.2% of free float SHORTSVFSVFS cost to borrow surges to 33.7%, up 116% in one week as shares grow scarce to borrow.OPTIONSMUMU: $1.8B of unusual calls OPTIONSMSFTMSFT: $371.6M of unusual calls OPTIONSSNDKSNDK: $644.3M of unusual calls and puts OPTIONSTSLATSLA: $884.4M of unusual calls OPTIONSCBRSCBRS: $30.3M of unusual calls and puts OPTIONSMSTRMSTR: $41.4M of unusual calls OPTIONSCRWVCRWV: $116.2M of unusual calls and puts OPTIONSCIENCIEN: $12.3M of unusual calls OPTIONSMAMA: $13.9M of unusual calls

Proprietary financial data since 2012

Better data.
Better decisions.

Q: What is short interest?

Shares sold short, usually shown as a percentage of the free float (the shares actually available to trade). High short interest means a crowded bet against the stock, and it is a key ingredient in squeeze setups.

Q: How is ORTEX short interest different from the exchange numbers?

Exchange short interest is a twice-monthly snapshot (positions as of the 15th and the last business day of the month) published about seven business days later, so the official print is already 11 to 12 days old the day it lands, and close to four weeks old just before the next one arrives. ORTEX models short interest from securities-lending data instead and updates the estimate through the trading day, alongside cost to borrow, availability, utilization and days to cover. Figures are ORTEX estimates and revise as new lending data arrives.

Q: How accurate are ORTEX estimates?

Every estimate is scored against the official record. Since August 2023, 95% of ORTEX short interest estimates were within one percentage point of free float of the official figure, across 2.1 million official prints in the US, Canada, Australia and Hong Kong. Index rebalance forecasts are scored after every review: 85% of add and delete calls were right the day before the announcement, every scheduled review since 2018 across 46 indices.

Q: How is ORTEX data licensed and delivered?

Every dataset can be licensed on its own or together, and delivered over the REST API (JSON or CSV), as whole-market daily files over SFTP or S3, through the Python SDK and Excel add-in, or on the ORTEX platform. Every dataset shares one set of identifiers, and trials with history are available on your own universe.

Q: What is the cost to borrow (borrow fee)?

The annualized fee a short seller pays to borrow shares. A rising borrow fee means the lending market is tightening, which makes shorts more expensive to hold.

Q: Do I need a credit card to try ORTEX?

No. A free account takes under a minute and needs no card. Upgrade to Basic or Advanced when you want more, and manage or cancel your plan in the app at any time.

Q: Can I get the data into my own tools?

Yes. Everything ships over a documented REST API and Python SDK, and as a native Excel add-in, so the same numbers reach your models and spreadsheets without re-keying. API plans start with a free TEST key.

Q: Which markets does ORTEX cover?

Prices and reference data for 95,000+ securities from 1964, daily short interest for 52,700+, insider transactions from more than 50 markets, 17,800 ETFs and 122 alternative datasets from more than 50 countries. The data catalog lists coverage and history for every dataset.

ORTEX builds its own market data: short interest estimates, index rebalance forecasts, stock scores and 122 alternative datasets, on one set of identifiers. License it for your desk, or use it on the ORTEX platform.

securities: 95,000+
datasets: 18
markets: 50+
history from: 1964

License ORTEX data Explore the platform

COCOINNasdaq · Coinbase

LIVE

Short Interest % of Free FloatSI % of Free Float

9.6%▲ +1.1

Cost to Borrow

2.3%▼ -0.4

Utilization

88.0%

Days to Cover

1.5

Measured, not claimed.

All the evidence →

Short interest

95%

of estimates within one percentage point of free float of the official figure, across 2.1m official prints.

Index rebalance

85%

of add and delete calls right the day before the announcement, every scheduled review since 2018 across 46 indices; 82% three weeks out.

Alternative data

43 days

median lead on reported revenue for the 55 series with a significant, out-of-sample lead.

Government trades

< 1 min

from publication to the ORTEX feed, for all three branches, paper filings included.

Insider transactions

1.6x

the insider trading days of the leading global aggregator, from reading regulators directly.

Options

3.7bn

option contract records: every listed US contract, every day since 2012.

ORTEX data is also distributed through Nasdaq Data Link, Benzinga Data Marketplace, Exchange Data International and Smartkarma.

The data layer

Data you can’t get from a terminal.

ORTEX estimates, forecasts and models, and data collected directly from regulators, exchanges and publishers, each one scored against the official record where there is one.

ORTEX estimatesShort InterestDaily and intraday short interest, cost to borrow and utilization for 52,700+ securities.52,700+ securities, daily from 2012 ORTEX forecastsIndex RebalanceDaily add and delete forecasts for 131 indices in 22 markets, MSCI included, scored after every review.131 indices in 22 markets, MSCI includedAdd-on from $99/mo ORTEX modelsStock Scores & PeersValue, quality, momentum and growth scores for 47,200 companies, daily.47,200 companies scored daily Collected at the sourceAlternative Data122 datasets from 155 publishers in 50+ countries, mapped to 7,500+ securities.122 datasets from 155 publishers Every contract since 2012Options AnalyticsEvery US option contract since 2012, dealer gamma, IV and unusual flow.3.7bn option contract records Written from ORTEX dataMarket IntelligenceStock Pulses, Earnings Previews and Trader Notes, written from ORTEX data.45,000+ pieces since March 2026

All 20 datasets in the catalog →Plus insider and government trades, buybacks, ownership, analysts, fundamentals, events, prices, ETFs and logos.

ORTEX for institutions

One integration. Twenty datasets.

Proprietary market data for hedge funds, asset managers, quantitative researchers, banks, brokers and financial platforms, with dedicated support and a trial on your own universe before you license.

Talk to data sales ORTEX for institutions →

Point-in-time history

Every value dated to when the market could first know it. Built for research and backtesting.

One security master

Ticker and exchange, ISIN, FIGI and ORTEX identifiers across every dataset, so any one joins onto any other.

Delivery your way

REST API, whole-market daily files over SFTP or S3, CSV, Python and Excel.

License what you need

Individual datasets or the whole stack, from a research seat to redistribution.

One data ecosystem

Choose how you use ORTEX.

Investors and tradersThe ORTEX platformShort interest, options, stock scores, signals, a backtester and ORTEX AI, in the browser. Start free.Explore the platform →Quants and developersAPIs, Python and ExcelEvery dataset over one REST API, the Python SDK, the Excel add-in and MCP for AI assistants.See the APIs →InstitutionsData licensingBulk daily files, point-in-time history and trials on your own universe, with dedicated support.ORTEX for institutions →Brokers and fintechsBuild on ORTEXEmbed ORTEX data, analytics and our high-performance charting library in your own product.ORTEX for platforms →

Building charts into a product? See ORTEX Charts, our JavaScript charting library.

Pricing

The platform, or the data itself.

For individual investors

The ORTEX platform

Start free, no card required. Priced in your local currency.

ORTEX Basic: Core datasets: delayed short interest, analysts, insiders and fundamentals; $49/mo
ORTEX Advanced: Real-time short interest, options, signals, stock scores and ORTEX AI; $149/mo
Index Rebalance add-on: Forecasts for 131 indices, with probability and flow; requires Advanced; $99/mo

Start free Compare plans →

For professional teams

ORTEX data licensing

Priced by dataset, coverage and delivery, for research, risk, systematic trading and redistribution.

✓Data licensing by dataset or bundle
✓Whole-market daily files
✓Point-in-time history
✓Redistribution and OEM
✓Custom universes and trials

Talk to data sales ORTEX for institutions →

FAQ

Common questions.

What is short interest?+

Shares sold short, usually shown as a percentage of the free float (the shares actually available to trade). High short interest means a crowded bet against the stock, and it is a key ingredient in squeeze setups.

How is ORTEX short interest different from the exchange numbers?+

Exchange short interest is a twice-monthly snapshot (positions as of the 15th and the last business day of the month) published about seven business days later, so the official print is already 11 to 12 days old the day it lands, and close to four weeks old just before the next one arrives. ORTEX models short interest from securities-lending data instead and updates the estimate through the trading day, alongside cost to borrow, availability, utilization and days to cover. Figures are ORTEX estimates and revise as new lending data arrives.

How accurate are ORTEX estimates?+

Every estimate is scored against the official record. Since August 2023, 95% of ORTEX short interest estimates were within one percentage point of free float of the official figure, across 2.1 million official prints in the US, Canada, Australia and Hong Kong. Index rebalance forecasts are scored after every review: 85% of add and delete calls were right the day before the announcement, every scheduled review since 2018 across 46 indices.

How is ORTEX data licensed and delivered?+