
A new system called PISCES UK private company trading is being developed to help private firms trade shares more easily. Backed by the UK Treasury and the Financial Conduct Authority (FCA), PISCES stands for Private Intermittent Securities and Capital Exchange System. It aims to make the UK’s capital markets more dynamic by giving private companies a new way to connect with investors — without going public.
What Makes PISCES Different?
Unlike traditional public markets, PISCES will not require a company to list permanently or go through a full Initial Public Offering (IPO). Instead, companies can hold intermittent auctions to sell their existing shares. This gives them flexibility while avoiding the high costs and regulatory burdens of a full listing.

These auctions are designed to let business owners set their own prices. Investors, in turn, can bid during these limited-time windows. Only existing shares are traded — companies cannot raise new capital through PISCES.
Key Features of PISCES
- Auction-based system: Companies choose when to list and at what price.
- Investor screening: Firms can block competitors or investors they don’t want on their cap table.
- No stamp duty: Trades on PISCES will be exempt from UK stamp duty, making it cheaper than other private placements.
All of these features aim to lower the barrier for share trading in the private market.
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Why It Matters
Private firms often struggle to find buyers for their shares. Employees or early investors may want to cash out, but options are limited. PISCES provides a regulated, government-backed platform to solve this issue.
The UK is trying to revive its capital markets, especially after a slow period for IPOs. By giving companies a simpler way to offer liquidity to shareholders, PISCES could boost investment activity and keep fast-growing startups in the UK longer.
Benefits for Investors and Companies
- Lower costs: No need for expensive IPO roadshows or full financial disclosures.
- Better access: Investors can now participate in private market opportunities they couldn’t reach before.
- Improved liquidity: Auctions bring more chances to buy and sell, which helps value discovery.
This could especially help scale-ups that are not ready for a public listing but still want to give early investors a chance to exit.
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Risks and Challenges
Still, there are some concerns.
- No guaranteed buyers: If a company sets its price too high, no one may bid.
- Lack of price transparency: After a trade, it’s unclear if price info will be shared widely, creating information asymmetry.
- Fewer safeguards: Since it’s not a public market, investor protections may be limited, raising the risk of unfair practices.
These challenges might make some big institutions think twice before jumping in.
How It Fits in the Market
PISCES will face competition from other platforms like PrimaryBid and Crowdcube, which also let private firms connect with investors. But PISCES has the edge of government and London Stock Exchange support.
Fund managers have shown mixed feelings. Some like the idea of more access to private companies. Others are cautious about the lack of liquidity and valuation risks.
What’s Next?
The UK government plans to introduce legislation by May 2025. A sandbox testing phase will help shape the final rules. If successful, PISCES could launch fully soon after.
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