Glossary · PSX Mechanics
Over-the-Counter
Securities are traded directly between two parties outside of a formal exchange. Less regulated and less transparent than exchange-traded markets.
01—What is Over-the-Counter?
The definition — and what it means in practice.
Over-the-Counter (OTC) means securities are bought and sold directly between two parties rather than through a formal exchange and its central order book. Prices are typically negotiated, and information on bids, offers and completed trades is often less visible to the wider market. Because it sits outside exchange rules and trading systems, OTC markets are generally less regulated and less transparent than exchange-traded markets.
For investors, OTC trading mainly changes three things: price discovery, liquidity and protections. With fewer visible quotes, it can be harder to judge a fair price and to compare execution quality. OTC instruments may trade infrequently, so exiting a position can take time or require a bigger price concession. Practical due diligence becomes more important, including understanding who the counterparty is, how settlement works, and what documentation confirms ownership.
OTC is a private deal, not an exchange trade: two parties might agree Rs 100 per share directly, with fewer public quotes than on an exchange order book.
- OTC trades are negotiated between parties, not matched through an exchange order book.
- Transparency is usually lower: fewer public quotes and less visible trade information.
- Liquidity can be thinner, which may widen spreads and make exits harder.
- Counterparty, documentation and settlement arrangements matter more than on an exchange.
02—How over-the-counter works on the PSX
The Pakistan-specific rules, conventions, and numbers.
On the Pakistan Stock Exchange (PSX), listed shares trade through an exchange venue with defined trading hours, and the ecosystem includes regulation by the Securities and Exchange Commission of Pakistan (SECP), clearing through NCCPL, and electronic shareholding at the Central Depository Company (CDC). That structure is designed to standardise trading, clearing and record-keeping for exchange-traded transactions.
A PSX investor will most commonly encounter OTC as a contrast to normal exchange trading. If a security or deal is not executed through the PSX trading system, it may not benefit from the same level of exchange-driven transparency and standardised processes that come with PSX trading, NCCPL clearing and CDC electronic holding. In practice, that means placing extra emphasis on verifying trade terms, settlement steps and proof of ownership.
Even when you are focused on PSX-listed shares, the concept of OTC is useful when comparing execution quality. Exchange trading provides visible bids and offers and a central matching process, while OTC relies more on negotiation and the counterparty relationship. Understanding the difference helps you interpret spreads, liquidity and how quickly you can transact.
03—Common misconceptions
Where investors most often get this wrong.
OTC is always illegal or ‘off the books’.
OTC describes the venue and method (direct trading), not legality. The key issue is lower transparency and fewer standardised protections than exchange trading.
OTC prices are always better because there are no exchange rules.
OTC prices can be better or worse. With fewer public quotes and potentially thinner liquidity, it may be harder to confirm you received a competitive price.
OTC trades are risk-free because they are done privately with one party.
Private dealing can increase counterparty and settlement risk. Clear documentation, agreed settlement terms and reliable record-keeping are critical.
04—Using over-the-counter on BSL
Where this term shows up across the platform — with live data.
- Compare exchange-traded liquidity and activity using the Market view.
- Check how spreads work by learning the difference between Bid Price and Ask Price.
- Filter for tradable PSX names using the Stock Screener.
- Understand standard exchange settlement via T+1 Settlement.
05—Frequently asked questions
What investors ask about over-the-counter on the PSX.
Frequently Asked Questions
OTC means a security is traded directly between two parties rather than through a formal exchange order book. Compared with exchange trading, OTC markets tend to have less visible pricing and can be less standardised in how trades are documented and settled.
No. PSX trading happens on an exchange venue with a central order book. OTC trading is arranged directly between parties outside the exchange trading system, typically with less transparency in quotes and completed trades.
In many OTC markets, quotes and trades are not displayed in a single public order book. Because fewer participants can see the same real-time bids and offers, it can be harder to assess the market price and execution quality.
Common issues include wider spreads, lower liquidity, harder price discovery and greater reliance on the counterparty. Investors also need to pay close attention to documentation and the mechanics that confirm ownership and settlement.
Exchange trading generally concentrates buyers and sellers in one order book, which supports price discovery and easier execution. OTC trading may be more fragmented, so finding a counterparty at a fair price can take longer.
06—Related terms
Keep building the picture.
The sole stock exchange in Pakistan, formed in 2016 through the merger of the Karachi, Lahore, and Islamabad stock exchanges. Headquartered in Karachi, the PSX lists over 500 companies across multiple sectors.
A real-time electronic record of all buy and sell orders for a security on the exchange, showing prices and quantities at each level.
The ease with which a security can be bought or sold without significantly affecting its price. High-liquidity stocks have large trading volumes and narrow bid-ask spreads.
The highest price a buyer is willing to pay for a security. The gap between the bid and ask price is the spread and represents the cost of trading.
The lowest price a seller is willing to accept for a security. Also called the offer price. The difference between the ask and the bid price is called the spread.
The process of completing a trade by transferring shares to the buyer and cash to the seller. The PSX has moved toward a T+1 settlement cycle, meaning most trades are finalised one business day after the trade date.
Put the term to work
Open a free BSL trading account
Understand the market, then trade it — live PSX data, screening tools, and a research desk that speaks plain English.