UK Short Interest Scraper: FCA Net Short Positions Tracker

Track UK short interest every day from the official FCA aggregated net short positions report, with change alerts by company and ISIN.

Who it's for

• Traders and investors watching short interest on UK-listed shares
• Financial journalists covering the most-shorted UK companies
• Quant and research teams that need a clean daily short-interest dataset

Sample output

issuerName	isin	netShortPct	changeFromPreviousPct	positionDate
CERES POWER HOLDINGS PLC	GB00BG5KQW09	18.14	0.17	2026-10-20
YELLOW CAKE PLC	JE00BF50RG45	15.1	0.13	2026-10-20
PENNON GROUP PLC	GB00BNNTLN49	14.82	0.36	2026-10-20

Real rows from a test run (shortened; the full output has more fields).

Price per 1,000 results

Main event: position-row at $0.002 each, so 1,000 results = $2.00. Other events: position-change $0.01 each (only charged when that row type is output). See the Pricing tab for the current prices.

Input example

{
  "mode": "current",
  "maxResults": 50
}

Track UK short interest every day from the official FCA aggregated net short positions (ANSP) report. See the current net short % for every UK company on the FCA reportable shares list, get alerts when short interest is new, increased, decreased or closed, and pull per-issuer summaries with the previous level, peak and low. Official FCA data, no scraping, no login, no API key.

Mode	What you get
📊 current	Every current aggregate net short position: company, ISIN, net short % of issued share capital, position date. Filter by company name, ISIN and a minimum %
🔔 changes	Compared with your previous run (saved snapshot): new, increased, decreased and closed short positions with old %, new %, change in percentage points and the issuer's total short %
🏢 issuerSummary	Per company: total disclosed short %, previous level and change, date the current level started, peak / low and number of updates in a history window (default 90 days)

Free weekly newsletter, UK Industry & Bills: https://ukindustryandbills.substack.com

What you get

• The current net short % for every UK company on the FCA reportable shares list, with ISIN and position date
• Daily change alerts: new, increased, decreased and closed short positions with old %, new % and the change
• Per-issuer summaries: total short %, previous level, peak and low over a history window
• Straight from the official FCA aggregated net short positions report, with no scraping or login
• Export to CSV, Excel or JSON, or push alerts to Slack, Sheets or a trading dashboard via the API

Important: what the FCA publishes since 13 July 2026

Under the Short Selling Regulations 2025 the FCA now publishes aggregate net short positions per company (the sum of all individual positions at or above 0.2%), on a T+2 basis, each working day from 12:00 UK time. Individual position holders (hedge fund names) are anonymised and are no longer published, so this actor reports short interest per company, not per fund. The old holder-level file is an archive frozen at 10 July 2026.

Who uses it

• Traders and investors: spot the most shorted UK stocks (FTSE 100, FTSE 250, AIM) and short squeezes in the making.
• Hedge funds and analysts: a clean daily UK short-interest feed for models, screens and dashboards.
• Investor relations teams: get alerted the day short interest in your company changes.
• Financial journalists: daily "most shorted UK shares" and "biggest increases in short interest" stories.
• Risk and compliance: monitor short pressure on holdings and counterparties.

Input

Field	Example	Notes
Mode	current	or changes, issuerSummary
Issuer name contains	["Ocado","Barclays"]	Case-insensitive text match
ISINs	["GB00B3MBS747"]	Exact ISIN
Minimum net short %	2	% of issued share capital
Change types	["new","increased"]	changes mode, default all
Monitor name	my-watchlist	changes mode: separate saved snapshot per name
History window (days)	90	issuerSummary mode
Sort by	netShortPct	or positionDate, issuerName
Max results	50	0 = no limit

Example: UK shares with 3%+ short interest

{ "mode": "current", "minShortPct": 3, "sortBy": "netShortPct" }

Example: daily alert when short interest changes (schedule this every working day after 12:30 UK time)

{ "mode": "changes", "monitorName": "daily", "minShortPct": 0.5 }

The first run saves a baseline and outputs nothing; each later run outputs only the changes.

Example output (real sample)

issuerName	isin	changeType	oldShortPct	newShortPct	reportDate
80 Mile Plc	GB00BFD3VF20	new	–	0.9	2026-10-20
3I GROUP PLC	GB00B1YW4409	increased	0.77	1.07	2026-10-20
4IMPRINT GROUP PLC	GB0006640972	decreased	0.5	0.2	2026-10-20

Output

{
  "recordType": "change",
  "changeType": "increased",
  "issuerName": "3I GROUP PLC",
  "isin": "GB00B1YW4409",
  "oldShortPct": 0.77,
  "newShortPct": 1.07,
  "changePct": 0.3,
  "issuerTotalShortPct": 1.07,
  "oldPositionDate": "2026-10-16",
  "newPositionDate": "2026-10-16",
  "reportDate": "2026-10-20",
  "source": "FCA aggregated net short positions (ANSP) report",
  "sourceUrl": "https://www.fca.org.uk/publication/documents/aggregated-net-short-positions.xlsx"
}

A RUN_SUMMARY record in the default key-value store has the report date, counts, filters and the change breakdown.

Pricing (pay per event)

In plain words: $2 per 1,000 position or summary rows and $10 per 1,000 change alerts. The whole current list (~425 companies) costs under $1, and a daily changes monitor a few cents.

Event	Price
position-row: each current position or issuer summary row	$0.002
position-change: each change row	$0.01

The full current list (about 425 companies) costs under $1. A daily changes monitor usually costs a few cents.

FAQ

Where does the data come from? The FCA's daily aggregated net short positions XLSX, linked from the FCA page Notification and disclosure of net short positions.

Why no fund names? Since 13 July 2026 the FCA anonymises individual holders and publishes only aggregate positions per company.

How fresh is it? The FCA updates the file each working day from 12:00 UK time with positions from two working days earlier.

What is "closed"? The company dropped off the current list, meaning aggregate short interest fell below the reporting threshold or the share stopped being reportable.

Contains public sector information published by the Financial Conduct Authority. This is not investment advice.

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About RawTrader | UK Industry & Bills

RawTrader | UK Industry & Bills is a UK newsletter and open data project tracking energy bills, fuel prices, public tenders, company closures and FCA short positions, using official data from Ofgem, DESNZ, ONS, Companies House, Find a Tender and the FCA.

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