Form SHO vs short interest report: what differs
Form SHO vs short interest report comes down to who does the reporting. A short interest report is built from broker-dealers reporting the short positions carried in their accounts, twice a month, and compiled by FINRA per security. Form SHO is filed by institutional investment managers about their own positions, monthly, on EDGAR, under SEC Rule 13f-2. One has been public for years. The other does not produce its first filing until 14 February 2028. This guide sets the two side by side and marks what each one hides. It is not investment advice.
Definition
Form SHO vs a short interest report
is the difference between manager-reported and broker-reported short data. Managers file Form SHO monthly on EDGAR under SEC Rule 13f-2, first due 14 February 2028. Broker-dealers report short interest twice monthly under FINRA Rule 4560, published since long before. Both publish aggregated, not attributed. Source: SEC and FINRA.
Form SHO vs short interest report at a glance
| Short interest report | Form SHO | |
|---|---|---|
| Rule | FINRA Rule 4560 | SEC Rule 13f-2, adopted 13 October 2023 |
| Who reports | FINRA member firms, for customer and proprietary accounts | Institutional investment managers, for their own positions |
| Frequency | Twice a month | Monthly |
| As of | Two settlement dates: the 15th and the last business day | Positions across the calendar month, plus daily activity |
| Filing deadline | 6 p.m. ET on the second business day after the settlement date | Within 14 calendar days of month end |
| Where filed | To FINRA | EDGAR |
| Published | Seventh business day after the settlement date | Aggregated data published by the SEC |
| Threshold | None; all equity securities | $10 million or 2.5% of shares outstanding for reporting issuers; $500,000 for others |
| Names the holder | No | No |
| Available today | Yes | No, first filings due 14 February 2028 |
Where the two genuinely differ
Attribution is not one of the differences. This is the point most coverage gets wrong. Form SHO is filed manager by manager, which reads like the short-side answer to Form 13F. It is not. The SEC publishes the data aggregated across managers per security. Nobody is named against a short position under either regime.
What actually changes is four things:
- The source moves closer to the position. A short interest report attributes a position to the broker-dealer carrying it, so one manager's book can be scattered across several firms and none of it traces back. Form SHO collects from the manager who holds the view.
- Daily activity appears. Short interest is a snapshot at a settlement date, so a position opened and closed in between never shows up. Form SHO reports the daily activity that changed the position through the month, which closes that hole.
- Coverage narrows. Short interest covers every equity security with no threshold. Form SHO only captures positions above its thresholds, so smaller shorts stay invisible.
- Timeliness barely moves. Short interest publishes on the seventh business day after a settlement date. Form SHO is filed within 14 calendar days of month end and published after that. Neither is a real-time record.
14 February 2028
Due date for the first Form SHO filings, covering January 2028, after an SEC order dated 3 December 2025 (Release No. 34-104303) extended the compliance date; FINRA short interest data has been published throughout
Source: SEC, Release No. 34-104303
Which one to read, and when
Today the question does not arise: only the short interest report exists. The reason is National Association of Private Fund Managers v. SEC, decided 25 August 2025, in which the Fifth Circuit remanded Rule 13f-2 without vacating it, holding that the SEC had not considered the cumulative economic impact of that rule together with the securities lending rule. The SEC's order of 3 December 2025 then pushed the first reporting period to January 2028.
Meanwhile the older regime may change first. FINRA has a proposed rule change pending with the SEC to increase the frequency and granularity of its short interest data, with an SEC decision date of 14 August 2026, shortly after this post was published. Check the current position before assuming the twice-monthly schedule still holds.
For the mechanics of each, see what is short interest reporting and what is Form SHO. For the long side of the same register, the disclosures that do name holders are 13F, Forms 3, 4 and 5 and the quarterly shareholding pattern in India. Flock reads disclosure filings and keeps each one dated and linked to its source. What any of it means for your money is your call to make.
Frequently asked questions
What is the difference between Form SHO and a short interest report?
The reporter. A short interest report comes from broker-dealers reporting the positions carried in their accounts, twice a month, compiled by FINRA. Form SHO comes from institutional investment managers reporting their own positions, monthly, filed on EDGAR under SEC Rule 13f-2. Source: FINRA and SEC.
Which one can I actually read today?
Only the short interest report. FINRA has published compiled short interest per security for years, on the seventh business day after each reporting settlement date. The first Form SHO filings are due 14 February 2028 under an SEC order dated 3 December 2025. Source: FINRA and SEC.
Does either one name the manager behind a short position?
Neither. FINRA compiles short interest by security across all reporting firms. The SEC will publish Form SHO data aggregated across managers per security, even though managers file individually. No public US disclosure attributes a short position to a named manager. Source: FINRA and SEC.
Will Form SHO replace short interest reporting?
Nothing published says it will. They collect from different parties on different cycles, and FINRA has a separate proposed rule change pending with the SEC to increase the frequency and granularity of its own short interest data, with an SEC decision date of 14 August 2026. Source: FINRA and SEC.
Flock tracks these filings, sourced, dated, and linked back to the original. See what smart-money entities disclosed, without the guesswork about what it means.
Disclosures shown are public regulatory filings. Data may be delayed or incomplete. Smart-money entities may no longer hold positions shown. Not investment advice.