Market data & analytics for 40,000+ US-listed stocks
Finshort gives you the latest & most accurate data for short interest, insider trading activity, short volume, cost-to-borrow rates, and more for over 40,000 stocks. This dashboard has a live feed of the top borrow rate movers, the latest insider trades, and the latest trades by members of Congress.
More about this page
Every ticker page summarizes short interest history, borrow fee trends, days to cover, insider transactions, institutional ownership, and social sentiment.
Frequently asked questions
What is short interest?
Short interest is the total number of shares that have been sold short and not yet covered. It is reported by broker-dealers to FINRA and published twice monthly. Comparing short interest to a stock's float (short % of float) shows how heavily a stock is being bet against.
What is cost to borrow (CTB)?
Cost to borrow (or borrow rate) is the annualized fee short sellers pay to borrow shares. High or rising borrow fees indicate scarce share supply and strong shorting demand, a key ingredient in short squeezes.
How often is Finshort data updated?
Insider, Institutional & Congress trades appear the moment they are filed, cost to borrow updates every 15min, daily short volume updates after every market close, and official short interest updates twice monthly on FINRA's settlement schedule. Reg SHO threshold lists are collected every trading night, SEC fails-to-deliver data twice a month when the SEC posts it, and fund short positions each quarter from the SEC's N-PORT data sets.
Do ETFs and mutual funds have to disclose their short positions?
Yes, but with a delay. Mutual funds and ETFs report every holding, including short positions, on Form N-PORT. They file each quarter with data for each month, and only the report for the last month of each fiscal quarter is made public, 60 days after the quarter ends. The SEC adopted monthly public N-PORT reports in 2024 but delayed them to November 17, 2027 for large fund groups and May 18, 2028 for smaller ones, and a February 2026 SEC proposal would drop the monthly public reports. Hedge funds and other private funds do not file N-PORT. Finshort shows each stock's fund short positions on its ownership page.
What is Form SHO, and is its data available?
Form SHO is a monthly report required by SEC Rule 13f-2 from institutional investment managers with large short positions: for a reporting company, a monthly average of at least $10 million or 2.5% of shares outstanding. The SEC would publish only aggregate short data per stock, not each manager's position. The SEC has exempted managers from filing Form SHO until January 2, 2028, so no Form SHO data exists yet.