Integrated facilities management Updater Services Ltd (UDS) has filed preliminary papers with capital market regulator SEBI to raise funds through an initial public offering. The Initial Public Offering (IPO) will comprise fresh issue of equity shares aggregating up to Rs 400 crore and an Offer For Sale (OFS) of up to 1.33 crore equity shares by a promoter and existing shareholders, according to the draft red herring prospectus.