Notice: The Short Interest Tracker is based on data sourced wholly from the FCA's daily short positions report. The information on this website is provided for information only. We don't provide any warranty as to the accuracy of the information on this site and it should not be relied upon in any way. The information on this website does not represent the views or opinions of Castellain Capital LLP on any of the companies displayed. It does not constitute an offer or recommendation to sell or the solicitation of any offer to buy any securities or other investment.

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We have changed the way we show data on this page. It now shows the date that short positions were changed rather than the date on which they were disclosed to the FCA.

Positions changed on Friday 11 January

Company Fund % short Change Date changed
AA PLC AQR Capital Management, LLC 1.68% -0.10% 11 Jan 2019
BURBERRY GROUP PLC Marshall Wace LLP 0.94% 0.05% 11 Jan 2019
DECHRA PHARMACEUTICALS BlackRock Institutional Trust Company, National Association 0.50% 0.0% 11 Jan 2019
FLYBE GROUP PLC Lombard Odier Asset Management (Europe) Limited 0.99% 0.54% 11 Jan 2019
Go-Ahead Group PLC BlackRock Investment Management (UK) Limited 2.40% -0.33% 11 Jan 2019
GREENCORE GROUP PLC Capital Fund Management SA 0.90% 0.01% 11 Jan 2019
IWG Plc Marshall Wace LLP 0.50% 0.0% 11 Jan 2019
J.D. WETHERSPOON PLC Insight Investment Management (Global) Ltd 0.67% 0.10% 11 Jan 2019
JUPITER FUND MANAGEMENT PLC Marshall Wace LLP 1.02% 0.12% 11 Jan 2019
Lookers plc GLG Partners LP 1.39% -0.02% 11 Jan 2019
MARKS & SPENCER GROUP PLC Engadine Partners LLP 0.90% 0.01% 11 Jan 2019
MARKS & SPENCER GROUP PLC WorldQuant, LLC 0.59% -0.02% 11 Jan 2019
MELROSE INDUSTRIES PLC - Old Numeric Investors LLC 0.70% 0.10% 11 Jan 2019
NANOCO GROUP PLC GMT Capital Corp 1.42% 0.10% 11 Jan 2019
NEWRIVER REIT PLC Toscafund Asset Management LLP 0.72% 0.04% 11 Jan 2019
PLUS500 LTD Philadelphia Financial Management of San Francisco, LLC 0.63% -0.13% 11 Jan 2019
SCAPA GROUP PLC Merian Global Investors (UK) Limited 1.63% 0.13% 11 Jan 2019
ST JAMES'S PLACE PLC GLG Partners LP 0.60% 0.08% 11 Jan 2019
TED BAKER Marshall Wace LLP 0.91% 0.05% 11 Jan 2019
ULTRA ELECTRONICS HLDGS PLC Citadel Europe LLP 0.54% 0.0% 11 Jan 2019
Vesuvius PLC Millennium International Management LP 0.56% 0.0% 11 Jan 2019
WOOD GROUP (JOHN) PLC AQR Capital Management, LLC 2.78% -0.02% 11 Jan 2019
ASOS PLC AQR Capital Management, LLC 2.60% 0.11% 11 Jan 2019
ASOS PLC WorldQuant, LLC 0.44% -0.15% 11 Jan 2019
BABCOCK INTL GROUP PLC Marshall Wace LLP 2.18% -0.02% 11 Jan 2019
BOOHOO.COM PLC Portsea Asset Management LLP 0.88% 0.14% 11 Jan 2019
CAIRN ENERGY PLC BlackRock Institutional Trust Company, National Association 1.27% -0.17% 11 Jan 2019
CAIRN ENERGY PLC BlackRock Investment Management, LLC 0.66% -0.13% 11 Jan 2019
Dairy Crest Group Numeric Investors LLC 0.49% -0.10% 11 Jan 2019
DIXONS CARPHONE PLC AHL Partners LLP 0.49% -0.01% 11 Jan 2019
FOXTONS GROUP PLC UBS Asset Management (UK) Ltd 0.43% -0.12% 11 Jan 2019
MAJESTIC WINE PLC Ennismore Fund Management Limited 1.38% 0.09% 11 Jan 2019
OCADO GROUP PLC Marshall Wace LLP 0.49% -0.09% 11 Jan 2019
PETROFAC LTD Balyasny Asset Management 0.59% 0.0% 11 Jan 2019
PETROFAC LTD Balyasny Europe Asset Management LLP 0.80% 0.10% 11 Jan 2019
PETROFAC LTD CapeView Capital LLP 0.49% -0.10% 11 Jan 2019
PROVIDENT FINANCIAL PLC Systematica Investments Limited 0.49% -0.10% 11 Jan 2019
SSE PLC WorldQuant, LLC 0.50% 0.02% 11 Jan 2019
ULTRA ELECTRONICS HLDGS PLC Naya Capital Management UK Limited 1.60% 0.08% 11 Jan 2019
WM MORRISON SUPERMARKETS Citadel Advisors LLC 0.99% -0.01% 11 Jan 2019
WM MORRISON SUPERMARKETS Citadel Europe LLP 1.97% -0.03% 11 Jan 2019